| Case Study Title | Process Target | Cleaner Production Strategy | Waste Type |
| Phosphate/Phosphonate Treatment of Cooling Tower Water Replaces Chromium | Cooling Tower | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Baffles to Recover Drift from Cooling Towers in Ethylene Glycol Plant Reduce Air Emissions | Cooling Tower | Chemical Recovery/Reuse | Air Emissions |
| Automatic Chemical Control of Blowdown Reduces Cooling Tower Water Usage at Chemical Plant | Cooling Tower | Source Reduction | Water Usage |
| Cooling Water Reused at Plastics Plant | Cooling Tower | Water Recovery/Reuse | Water Usage |
| More Efficient Boiler Destroys Hydrogen Cyanide in Waste from Acrylonitrile Production | Boiler and Steam System | Air Treatment | Air Emissions |
| Diesel Boiler Converted to Natural Gas to Reduce Air Emissions in Polyester Unit | Boiler and Steam System | Alternative Chemistry (Source Reduction) | Air Emissions |
| Segregating Steam Condensate from Used Solvents Reduces Solvent Losses in Dewaxing | Boiler and Steam System | Chemical Recovery/Reuse | Air Emissions |
| Portable Stack Gas Analyzer Improves Control of Boiler Operations, Reduces Fuel Use | Boiler and Steam System | Energy Conservation | Energy Usage |
| Using Conductivity Meter to Improve Control of Boiler Blowdown Operations Reduces Fuel Use | Boiler and Steam System | Energy Conservation | Energy Usage |
| Improving Steam Equipment and Operating Procedures Reduce Energy Use at Soap Manufacturer | Boiler and Steam System | Energy Conservation | Energy Usage |
| Using Dissolved Oxygen Meter to Improve Control Over Boiler Water Quality Reduces Fuel Use | Boiler and Steam System | Energy Conservation | Energy Usage |
| Formal Steam Trap Maintenance Program Saves Energy at Chemical Plant | Boiler and Steam System | Energy Conservation | Energy Usage |
| Improved Steam Trap Maintenance Saves Energy, Reduces Chemical Use at Chemical Plant | Boiler and Steam System | Energy Conservation | Energy Usage |
| Ultrasonic Leak Detector Reduces Losses from Leaks in Utility Lines, Reduces Fuel Use | Boiler and Steam System | Energy Conservation | Energy Usage |
| Wood-Fired Boiler Converts Waste to Fuel, Reduces Use of Oil at Pharmaceutical Plant | Boiler and Steam System | Energy Recovery | Solid Waste (Nonhazardous) |
| New Compressor Turbine Allows Return of Steam to Boiler, Reduces Energy and Chemical Use | Boiler and Steam System | Energy Recovery | Energy Usage |
| Off-Spec Alcohol-Based Products Used as Fuel to Reduce Waste from Cosmetics Plant | Boiler and Steam System | Energy Recovery | Hazardous Waste |
| Boiler Exhaust Gas Heat Recovery Saves Energy at Polyester Plant | Boiler and Steam System | Energy Recovery | Energy Usage |
| Steam Monitoring Devices Lead to Reduced Use of Steam at Chemical Plant | Boiler and Steam System | Energy Recovery | Energy Usage |
| Heat Recovery from Wastewater Reduces Steam Needs in Epichlorohydrin Process | Boiler and Steam System | Energy Recovery | Energy Usage |
| Improved Control of Hot Water Consumption Reduces Energy and Water Use at Pesticide Plant | Boiler and Steam System | Water Recovery/Reuse | Water Usage |
| Waste Acid Soluble Oil Converted to Refinery Product, Hydrogen Fluoride Releases Reduced | Furnace/Process Heater | Co-Product Development | Hazardous Waste |
| Improved Insulation for Electric Furnace at Lead Oxide Plant Saves Fuel, Increases Yield | Furnace/Process Heater | Energy Conservation | Energy Usage |
| Monitoring Equipment and Sampling Ports Reduce Fuel Use in Synthesis Gas Production | Furnace/Process Heater | Energy Recovery | Energy Usage |
| Calcium Chloride Replaces Dichloromethane as Refrigerant in Titanium Tetrachloride Cooling | Heat Exchanger | Alternative Chemistry (Source Reduction) | Air Emissions |
| Off-Site Recovery and Return of Heat Transfer Fluid Reduces Waste from Fiber Plant | Heat Exchanger | Chemical Recovery/Reuse | Hazardous Waste |
| Live-Loading Packing System Around Heat Exchanger Shafts Reduces Solvent Loss in Dewaxing | Heat Exchanger | Chemical Recovery/Reuse | Air Emissions |
| Liquid Seal Type Degasifier Reduces Emissions from Partial Oxidation Plant Heat Exchanger | Heat Exchanger | Chemical Recovery/Reuse | Air Emissions |
| Sacrificial Zinc Used to Reduce Condenser Fouling and Lower Dichloromethane Emissions | Heat Exchanger | Chemical Recovery/Reuse | Air Emissions |
| Solvent from Olefin Cracker Heat Exchanger Cleaning Routed Back to Cracker for Recovery | Heat Exchanger | Chemical Recovery/Reuse | Hazardous Waste |
| Monitoring Program Recovers Chlorofluorocarbon, Reduces Releases at Pharmaceutical Plant | Heat Exchanger | Chemical Recovery/Reuse | Air Emissions |
| Sulfide-Based Precipitation Reduces Copper in Wastewater Effluent at Sulfuric Acid Plant | Heat Exchanger | Wastewater Treatment | Wastewater |
| Reduced Use of Centrifuge Cooling Water Mist Reduces Hazardous Waste at Peroxide Plant | Heat Exchanger | Water Recovery/Reuse | Hazardous Waste |
| New Scrubber for Fluidized Catalytic Cracking Unit Reduces Air Emissions at Refinery | Stack
Emissions | Air Treatment | Air Emissions |
| Thermal Oxidizer Reduces Xylene Releases from 4-Nitrodiphenylamine Production | Stack Emissions | Air Treatment | Air Emissions |
| Flare Flow Meters and Improved Awareness Reduce Flare-Related Refinery Emissions | Stack Emissions | Air Treatment | Air Emissions |
| Thermal Oxidizer Destroys Solvent Emissions Released During Coating Manufacture | Stack Emissions | Air Treatment | Air Emissions |
| Thermal Oxidation Reduces Air Releases of Carbon Tetrachloride at Chlorine Plant | Stack Emissions | Air Treatment | Air Emissions |
| Oxidizer on Trimetallic Anhydride Unit Vent Reduces Air Releases | Stack Emissions | Air Treatment | Air Emissions |
| Acid Scrubbing of Sulfuric Acid Tank Vent Gases Reduces Waste, Produces Sulfuric Acid | Stack Emissions | Air Treatment | Wastewater |
| Three-Stage Thermal Oxidizer Reduces Nitrogen Oxide Emissions from Alkanolamine Unit | Stack Emissions | Air Treatment | Air Emissions |
| Toluene from Vitamin Manufacture Recovered in Refrigeration Device | Stack Emissions | Chemical Recovery/Reuse | Air Emissions |
| Gases from Trimetallic Anhydride Unit Condensed and Decanted, Pseudocumene Recovered | Stack Emissions | Chemical Recovery/Reuse | Air Emissions |
| Activated Charcoal Adsorption Reduces Air Emissions from Polyurethane Foam Manufacturer | Stack Emissions | Chemical Recovery/Reuse | Air Emissions |
| Improved Scrubber Packing Material Increases Cyclohexane Recovery at Nylon Plant | Stack Emissions | Chemical Recovery/Reuse | Air Emissions |
| Improved Control and Re-Use of Caustic Reduces Aqueous Waste Generation from Scrubbers | Stack Emissions | Chemical Recovery/Reuse | Wastewater |
| Propane Stored for Use as Feedstock Instead of Flared During Shutdown at Plastics Plant | Stack Emissions | Chemical Recovery/Reuse | Air Emissions |
| Bag Houses and Electrostatic Precipitators Reduce Dust Emissions During Glass Bead Forming | Stack Emissions | Chemical Recovery/Reuse | Air Emissions |
| Air Pollutants Distilled From Polyester Waste and Burned in Boiler to Reduce Wastewater | Stack Emissions | Energy Recovery | Wastewater |
| Catalytic Oxidation of Acetic Acid Plant Off-Gas Generates Energy, Reduces Air Emissions | Stack Emissions | Energy Recovery | Air Emissions |
| Switch to Dual Absorption Process at Sulfuric Acid Plant Reduces Sulfur Dioxide Emissions | Stack Emissions | Process Change (Source Reduction) | Air Emissions |
| Use of Scrubber Purge to Quench Incinerator Gas Stream Reduces Waste and Water Usage | Stack Emissions | Water Recovery/Reuse | Wastewater |
| Vapor Headers Route Dichloromethane Releases to Thermal Oxidizer in Antibiotic Production | Storage Tanks | Air Treatment | Air Emissions |
| Thermal Oxidizer Destroys Organic Emissions at Coating Plant | Storage Tanks | Air Treatment | Air Emissions |
| Pressurized Tank Vented to Incinerator Reduces Acrylonitrile Emissions | Storage Tanks | Air Treatment | Air Emissions |
| Rubber Boot Covers Around Legs of External Floating Roof Tanks Reduce Refinery Emissions | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Condenser on Product Tanks Recovers Solvent from Hot Vapors at Coating Manufacturer | Storage Tanks | Chemical Recovery/Reuse | Hazardous Waste |
| Floating Roofs in Storage Tanks Reduce Air Emissions at Toll Chemical Plant | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Vapor Balance, Condensors Recover Dichloromethane and Reduce Emissions at Antibiotic Plant | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Activated Carbon Adsorption Recovers Toluene Vapors from Storage Tanks at Herbicide Plant | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Floating Roofs and Conservation Vents Reduce Losses from Solvent Tanks at Chemical Plant | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Internal Floats on Storage Tanks Reduce Hydrocarbon Emissions at Research Facility | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Activated Carbon Adsorption Recovers Toluene Vapors from Storage Tanks in Insecticide Unit | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Floating Roofs and Double Mechanical Seals Installed in Tanks to Reduce Air Emissions | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Cyclohexane Storage Tank Losses Collected in Manifold and Returned to Nylon Process | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Condensers on Linked Tank Vents Recover Xylene During 4-Nitrodiphenylamine Production | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Internal Floating Roofs on Butanol Storage Tanks Reduce Air Emissions | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Cryogenic Ammonia Storage Reduces Ammonia Losses at Nylon Plant | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| New Storage Tanks Reduce Monomer Losses at Plastic Manufacturer | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Improved Inert Gas System Control Reduces Solvent Emissions from Dewaxing Operation | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Vapor Balance Recovers Vinylidene Chloride During Tank Transfers at Saran Plant | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Operational Changes Reduce Cyclohexane Emissions from Storage Tanks at Nylon Plant | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Improved Procedure for Cleaning Refinery Storage Tanks Reduces Waste and Recovers Product | Storage Tanks | Chemical Recovery/Reuse | Hazardous Waste |
| Recovery of Formalin from Tank Bottoms Reduces Disposal of Hazardous Waste | Storage Tanks | Chemical Recovery/Reuse | Hazardous Waste |
| Tank Seals and Floating Roofs Reduce Air Emissions at Cyclic Chemicals Plant | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Treatment of Crude Oil Before Salt Dome Storage Prevents Air Emissions | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Vapor Balancing for Sodium 2-Mercaptobenzothiazole Tanks Reduces Toluene Emissions | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Steam Stripper Added to Recover Toluene Used in Sodium 2-Mercaptobenzothiazole Extraction | Storage Tanks | Chemical Recovery/Reuse | Air Emissions |
| Distillation and Recovery of Light Aromatics from Crude Tar Reduce Emissions from Coking | Storage Tanks | Co-Product Development | Air Emissions |
| Bulk Storage Tanks Replace Chemical Drums to Reduce Refinery Waste | Storage Tanks | Source Reduction | Hazardous Waste |
| Switch to Longer Life Compressor Oil Reduces Oil Waste at Plastics Plant | Pumps, Valves & Piping | Alternative Chemistry (Source Reduction) | Solid Waste (Nonhazardous) |
| Dry Disconnects at Chemical Transfer Points Reduce Releases at Toll Chemical Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Wastewater |
| Vented Streams Combined and Benzene Recovered in Scrubber at Chemical Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Monitoring and Repair Program Reduces Air Emissions of Toluene at Insecticide Manufacturer | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Improved Equipment Maintenance Reduces Methyl Isobutyl Ketone Releases at Resin Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Double Mechanical Seals on Pumps at Pharmaceutical Plant Reduce Air Emissions | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Replacement of Agitator Seal in 4-Nitrodiphenylamine Production Reduces Xylene Releases | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Expanded Monitoring and Repair of Piping Components Reduces Air Releases at Chemical Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Upgrading Pumps and Agitators Reduces Toluene Losses from NaMBT Manufacture | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Pump Blowdown is Settled and Recirculated to Reduce Wastewater at Oxidizer Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Wastewater |
| Monitoring and Repair of Piping Components Reduces Air Releases from Chemical Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Strict Block Valve Guidance and Purchasing Reduce Air Emissions at Chemical Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Stricter Monitoring and Repair of Pumps and Valves Reduces Air Emissions at Refinery | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Dichloromethane Emissions from Tank Vent in Antioxidant Unit Recovered Using Carbon Bed | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Toluene Decanter on UV Acrylic Reactor Pump Reduces Wastewater and Air Emissions | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Improved Control of Pump Seal Flush Water Reduces Wastewater Generation | Pumps, Valves & Piping | Chemical Recovery/Reuse | Wastewater |
| Nitrogen Purge Used to Regenerate Waste Compressor Seal Oil at Olefin Cracking Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Hazardous Waste |
| Teflon Inspection Port Gaskets Reduce Solvent Emissions from Dewaxing at Refinery | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Monitoring and Repair of Valves and Flanges Reduces Air Emissions at Chemical Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Improved Control Valve Packing Reduces Air Emissions at Chemical Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Enhanced Monitoring and Repair of Piping Components Reduces Air Emissions at a Refinery | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Dichloromethane Emissions Reduced by Improving or Eliminating Seals in Process Components | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Rupture Disks Installed in Relief Vents for Wood Rosin Extraction Reduce Air Emissions | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Monitoring and Repair Program Reduces Solvent Losses at Pharmaceutical Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Replacing Vent on Dichloromethane Rundown Tank Reduces Emissions at Pharmaceutical Plant | Pumps, Valves & Piping | Chemical Recovery/Reuse | Air Emissions |
| Double Mechanical Seals and Seal Pots in Thermal Treatment Unit Pumps Reduce Waste | Pumps, Valves & Piping | Process Change (Source Reduction) | Hazardous Waste |
| Routing Streams to Common Header Reduces Xylene Releases from Maleic Anhydride Production | Separation Process | Air Treatment | Air Emissions |
| Toluene Eliminated from Production of Chemical Hardener for Photographic Films | Separation Process | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Carbon Tetrachloride Eliminated, Catalyst Waste Reduced During Heptachlor Manufacture | Separation Process | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Revised Procedure for Isolation of Penicillin V Eliminates Use of Methyl Isobutyl Ketone | Separation Process | Alternative Chemistry (Source Reduction) | Air Emissions |
| Removal of Benzene from Wash Oil Eliminates Hazardous Coke Waste from Ethylene Unit | Separation Process | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Heptane Replaces Toluene for Removal of Water from Sunscreen Product | Separation Process | Alternative Chemistry (Source Reduction) | Air Emissions |
| Blowing of Acid Receiver Tank Found to Cause Sulfur Dioxide Releases at Chemical Plant | Separation Process | Alternative Chemistry (Source Reduction) | Air Emissions |
| Naphthalene-Free Solvents Eliminate Naphthalene in Wastewater at Chemical Plant | Separation Process | Alternative Chemistry (Source Reduction) | Wastewater |
| Relocating Methanol Stripper Purge Line Reduces Methanol in Wastewater at Chemical Plant | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Ion Exchange Replaces Caustic Treatment of Process Solvent, Reduces Hazardous Waste | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Evaporator Recovers Toluene Diisocyanate from Tar Waste at Chemical Plant | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Chrome Recovery Reduces Filter Waste, Improves Product in Sodium Chlorate Plant | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Additional Condenser Vented to Incinerator Reduces Solvent Releases from Ethocel Unit | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Improving Control and Reducing Steam Leaks in Wood Rosin Extraction Reduce Waste | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Water Scrubber and Distillation Recover Dimethylformamide from Synthetic Fiber Production | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Distillation Unit Recovers Isopropyl Alcohol in Nylon Yarn Production, Reduces Waste | Separation Process | Chemical Recovery/Reuse | Solid Waste (Nonhazardous) |
| Mechanical Vacuum Pump Reduces Losses During Toluene Diisocyanate Purification | Separation Process | Chemical Recovery/Reuse | Wastewater |
| Switch to Continuous Purification of Acetonitrile Reduces Waste and Recovers More Product | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Improved Control of Solvent Stills Recovers Ethanol from Plasma Separation, Reduces Waste | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Steam Distillation Recovers Toluene and Reduces Chloroform Use at Pharmaceutical Plant | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Operating Adsorption Column During Startup of Formalin Unit Reduces Air Emissions | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Liquid Organics from Nitrile Refining Recovered and Reused Instead of Being Used as Fuel | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Caustic Soda Used for Sulfur Removal Treated and Reused at Refinery | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Filter Cake Washed to Recover Zinc Dialkyl Dithiophosphate Product at Chemical Plant | Separation Process | Chemical Recovery/Reuse | Solid Waste (Nonhazardous) |
| Improved Recovery of Styrene and Butadiene in Latex Manufacture Reduces Waste | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Better Transfer Methods and Maintenance Reduce Solvent Losses at Pharmaceutical Plant | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Upgraded Dewaxing Filters Reduce Solvent Losses at Refinery | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Waste Chlorpyrifos Recovered by Sending Chlorpyrifos Recycle Reject to Purification System | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Direct Steam Distillation Recovers Methanol Waste from Hydrogen Peroxide Purification | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Vacuum Distillation Recovers Toluene from Synthetic Vitamin Distillation Bottoms | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Using Condensate from Water Cooler as Feedstock in Potash Lye Regeneration Reduces Waste | Separation Process | Chemical Recovery/Reuse | Wastewater |
| Additional Conservation Vents and Steam Stripper Reduce Toluene Carryover to Drying Step | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Rotary Valve with Nitrogen Purge Reduces Solvent Emissions During Wood Rosin Extraction | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Improved Latex Stripper Condenser Decanter Increases Styrene Recovery, Reduces Emissions | Separation Process | Chemical Recovery/Reuse | Wastewater |
| Improving In-Process Solvent Recovery Reduces Solvent Usage in Xantham Gum Manufacture | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Mixed Solvent Waste Stream Recycled to Reactor in Synthetic Vitamin Production | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Recovery of Ammonia from Urea Purification Step Reduces Air Emissions | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Lower Volume Filters Reduce Product Loss During Manufacture of Acrylate Dispersions | Separation Process | Chemical Recovery/Reuse | Solid Waste (Nonhazardous) |
| Improved Sampling and Handling Reduce Dichloromethane Releases at Pharmaceutical Plant | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Enclosed Belt Filters Reduce Solvent Emissions During Penicillin V Production | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Improved Control of Wood Rosin Extraction Conditions Reduces Solvent Releases | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Lower Venting System Temperature Reduces Emissions from Phthalic Anhydride Refining Units | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Increasing Strip Temperature in Kettle Reduces Downstream Dichloromethane Emissions | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Recovery of Dichloroacetophenone Reduces Waste Incineration from Insecticide Production | Separation Process | Chemical Recovery/Reuse | Hazardous Waste |
| Improved Procedures for Phase Separation Reduce Toluene Emissions at Insecticide Plant | Separation Process | Chemical Recovery/Reuse | Air Emissions |
| Wet Oxidation of Hydrogen Cyanide Scrubber Water Creates Saleable Products at Coke Plant | Separation Process | Co-Product Development | Wastewater |
| Use of Phthalic Anhydride Light-Ends as Feedstock for Polyol Manufacture Reduces Waste | Separation Process | Co-Product Development | Hazardous Waste |
| Decreasing Pressure in Chloromethane Distillation Columns Saves Energy | Separation Process | Energy Conservation | Energy Usage |
| Collection of Methane Produced During Unit Shutdown Reduces Emissions and Fuel Use | Separation Process | Energy Recovery | Air Emissions |
| Process Change Reduces Toluene Releases and Waste Salt from Neutralization at Polyol Unit | Separation Process | Process Change (Source Reduction) | Air Emissions |
| Switch to Melt Crystallization of Bisphenol A Reduces Dichloromethane Emissions | Separation Process | Process Change (Source Reduction) | Air Emissions |
| New Degassing Process for Latex Purification Reduces Vinyl Chloride Emissions | Separation Process | Process Change (Source Reduction) | Air Emissions |
| Raw Material Purification Reduces Filter Cake Generation in Silicate Manufacture | Separation Process | Process Change (Source Reduction) | Solid Waste (Nonhazardous) |
| New Distillation Column Allows More Toluene Recovery from Rubber Additive Purification | Separation Process | Process Change (Source Reduction) | Hazardous Waste |
| Separating Hazardous Compounds from Spent Aggregate Filter Media Reduces Hazardous Waste | Separation Process | Recycling | Hazardous Waste |
| Selling Spent Alumina to Smelter Eliminates Disposal at Petroleum Refinery | Separation Process | Recycling | Solid Waste (Nonhazardous) |
| Converting Styrene Condensate from Polystyrene Production to Gasoline Reduces Waste | Separation Process | Recycling | Hazardous Waste |
| Ion Exchange Resin Segregated, Reclaimed, and Sold to Reduce Waste from Resin Manufacturer | Separation Process | Recycling | Solid Waste (Nonhazardous) |
| Activated Alumina Bed Life Extended to Reduce Isophthalic Acid Production Waste | Separation Process | Source Reduction | Hazardous Waste |
| Replacement of Centrifuge in 4-Nitrodiphenylamine Process Reduces Xylene Emissions | Separation Process | Source Reduction | Air Emissions |
| Bottoms from Styrene Devolatilization Used as Feedstock in Gasoline Production | Separation Process | Source Reduction | Hazardous Waste |
| Improved Separation and Control of UV Acrylic Reactor Wash Water Reduces Toluene Emissions | Separation Process | Wastewater Treatment | Wastewater |
| Water Conservation Measures at Chemical Plant Reduce Wastewater and Water Usage | Separation Process | Water Recovery/Reuse | Water Usage |
| Product Wash Water Recirculated to Intermediate Purification in Guanidine Manufacture | Separation Process | Water Recovery/Reuse | Water Usage |
| Reuse of Water in Sodium Chlorate Manufacture Reduces Wastewater Discharges | Separation Process | Water Recovery/Reuse | Wastewater |
| Decanter on Cationic Batch Stripper Sends Water Back to Resin Batch, Reduces Wastewater | Separation Process | Water Recovery/Reuse | Hazardous Waste |
| Development of Water-Based Coatings Reduces Toluol and Xylol Use | Mixer | Alternative Chemistry (Source Reduction) | Air Emissions |
| Material Efficiency Improved and Batch Waste Reduced at Coatings Plant | Mixer | Chemical Recovery/Reuse | Hazardous Waste |
| Vibration Blending Vessels Reduce Waste and Air Emissions at Coating Manufacturer | Mixer | Chemical Recovery/Reuse | Air Emissions |
| Improved Raw Material Handling Reduces Dust Emissions at Pesticide Plant | Mixer | Chemical Recovery/Reuse | Air Emissions |
| Wash Water and Solvent Reuse at Paint Plant Reduce Water Use and Hazardous Waste | Mixer | Chemical Recovery/Reuse | Hazardous Waste |
| Covers on Mixing Tanks Decrease Solvent Emissions at Chemical Plant | Mixer | Chemical Recovery/Reuse | Air Emissions |
| Changes in Drying and Classifying Polyolefin Catalysts Reduce Chromium Emissions | Mixer | Chemical Recovery/Reuse | Air Emissions |
| Fluid Coupling of Pesticide Dust Blender and Engine Eliminates Waste from Power Failures | Mixer | Chemical Recovery/Reuse | Hazardous Waste |
| Larger Vessels and Improved Sampling and Cleaning Reduce Wastewater at Surfactant Plant | Mixer | Chemical Recovery/Reuse | Wastewater |
| Reuse of Purge Resins Reduces Waste at Batch Chemical Plant | Mixer | Chemical Recovery/Reuse | Hazardous Waste |
| Error Reduction Program Reduces Waste Batches at Cleaning Compound Manufacturer | Mixer | Chemical Recovery/Reuse | Solid Waste (Nonhazardous) |
| Seals Around Stirrer Shafts Reduce Thinner Losses at Lacquer Manufacturer | Mixer | Chemical Recovery/Reuse | Air Emissions |
| Sensors and Improvements in Comfort Heaters at Paint Manufacturer Reduce Energy Use | Mixer | Energy Conservation | Energy Usage |
| Liquid Wastes Substituted for Fresh Water in Preparing Lime Milk at Chemical Plant | Mixer | Water Recovery/Reuse | Water Usage |
| Spray Nozzles Reduce Tank Cleaning Waste at Batch Chemical Plant | Mixer | Water Recovery/Reuse | Wastewater |
| Revised Raw Material Specifications Reduce Waste from Dye Manufacturer | Raw Materials | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Drop-In Replacement Solvent Eliminates Tetrachloroethylene in Pigment Manufacture | Raw Materials | Alternative Chemistry (Source Reduction) | Air Emissions |
| Cyclohexane-Toluene Mixture Substituted for Benzene in Synthetic Rubber Production | Raw Materials | Alternative Chemistry (Source Reduction) | Air Emissions |
| Microencapsulator's Clients Reformulate to Reduce or Eliminate Use of Dichloromethane | Raw Materials | Alternative Chemistry (Source Reduction) | Air Emissions |
| Methanol and Mineral Spirits Eliminate Toluene at Polyvinyl Chloride Plant | Raw Materials | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Switch to Water-Based Solvent for Medicine Tablet Coating Operations Reduces Air Emissions | Raw Materials | Alternative Chemistry (Source Reduction) | Air Emissions |
| Substituting Low Aromatic Naphtha for Xylene Process Solvent Reduces Xylene Releases | Raw Materials | Alternative Chemistry (Source Reduction) | Air Emissions |
| Facility Coating Manufacturer Eliminates Use of 1,1,1-Trichloroethane | Raw Materials | Alternative Chemistry (Source Reduction) | Air Emissions |
| Automating the Light Oil Decant Process Reduces Air Emissions During Light Oil Production | Raw Materials | Chemical Recovery/Reuse | Air Emissions |
| Better Scheduling Increases Rework of Material, Reduces Waste at Foundry Chemical Plant | Raw Materials | Chemical Recovery/Reuse | Hazardous Waste |
| Reuse of Chlorobenzene Reduces Hazardous Waste at Polymer Plant | Raw Materials | Chemical Recovery/Reuse | Hazardous Waste |
| Tar/Dimer Waste Stream from Butadiene Process Fed to Olefin Unit | Raw Materials | Co-Product Development | Hazardous Waste |
| Residue from Polyester Production Used As Additive in Carpet Sheet for Roofing | Raw Materials | Co-Product Development | Hazardous Waste |
| Fly Ash Waste from Power Generation Used as Raw Material for Coating Manufacture | Raw Materials | Recycling | Solid Waste (Nonhazardous) |
| Recycling of Nickel in 1,4-Butanediol Waste Eliminates Disposal | Raw Materials | Recycling | Hazardous Waste |
| Fluorobenzene/Toluene Byproduct of Nustar Production Converted to Raw Material | Raw Materials | Recycling | Hazardous Waste |
| Continuous Venting of Inert Gas Eliminated to Reduce Toluene Releases at Vitamin Plant | Raw Materials | Source Reduction | Air Emissions |
| Recovery of Cumene Emissions During Phenol Manufacturing Reduces Emissions | Reactor | Air Treatment | Air Emissions |
| Thermal Oxidizer and Tank Vent Condensors Reduce Benzene Releases from Benzoic Acid Unit | Reactor | Air Treatment | Air Emissions |
| Thermal Oxidizer Reduces Dichloromethane Emissions from Antibiotic Manufacture | Reactor | Air Treatment | Air Emissions |
| Ionic Catalyst Process for Neoprene Production Reduces Waste | Reactor | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Improved Conversion in Reactor Reduces Zinc in Oil Additive Product, Wastewater Reduced | Reactor | Alternative Chemistry (Source Reduction) | Wastewater |
| Changing Reaction Conditions Improves Styrene Conversion to Latex, Reduces Air Releases | Reactor | Alternative Chemistry (Source Reduction) | Air Emissions |
| New Process Chemistry Eliminates Need for Dichloromethane in Antibiotic Manufacture | Reactor | Alternative Chemistry (Source Reduction) | Air Emissions |
| Plant-Extracted Essential Oils Replace Hazardous Solvents in Detergent Production | Reactor | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Ending Use of Cadmium-Based Pigment Reduces Hazardous Waste at Polymer Plant | Reactor | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Changes in Ion Exchange Resin Production Reduce Tar Formation and Chloromethane Emissions | Reactor | Alternative Chemistry (Source Reduction) | Wastewater |
| Aqueous-Based Process for Processing Zirconium Reduces Waste at Chemical Plant | Reactor | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Switching to Terephthalic Acid Eliminates Liquid Methanol Byproduct at Polyester Plant | Reactor | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| New Primer for Plastic Film Coating Reduces Volatile Organic Compound Emissions | Reactor | Alternative Chemistry (Source Reduction) | Air Emissions |
| Substitute Found for Cleaning Hardened Acrylic Residues at Polymer Plant | Reactor | Alternative Chemistry (Source Reduction) | Air Emissions |
| Use of Lower Temperature Catalyst in Anti-Oxidant Reactor Reduces Waste | Reactor | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Catalyst Changes in Isophthalic Acid Production Reduce Air Emissions | Reactor | Alternative Chemistry (Source Reduction) | Air Emissions |
| Improved Catalyst Settling Process Reduces Nickel in Toluene Diamine Unit Waste | Reactor | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Switch to Water-Based Wetting Agent in Polytetrafluoroethylene Process Reduces Emissions | Reactor | Alternative Chemistry (Source Reduction) | Air Emissions |
| Concentrated Polymerization Initiator Reduces Styrene, Ethylbenzene Losses at Resin Plant | Reactor | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| New Process Improves Recovery from Spent Copper Catalyst Slurry, Reduces Hazardous Waste | Reactor | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| Replacement for Nickel Catalyst in Hydrogenation Reactors Prevents Pollution | Reactor | Alternative Chemistry (Source Reduction) | Hazardous Waste |
| On-Line Gas Analyzer Improves Catalytic Conversion of Nitrogen Oxide, Reduces Catalyst Use | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Molecular Sieve Columns Recover Dichloromethane in Antibiotic Manufacture | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Process Improvements and Better Control Reduce Off-Spec Product Waste at Resin Plant | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Steam Used to Recover Toluene and Chloroethane from Ethocel Reaction | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Improved Scheduling Reduces Use of Solvent for Cleaning Reactors at Paint Manufacturer | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Blowdown Water from Hydrolysis of Raw Cyanide Acid Used to Make Ammonium Nitrate | Reactor | Chemical Recovery/Reuse | Wastewater |
| Catalyst Fines in Fluidized Catalytic Cracker Slurry Oil Removed and Recovered at Refinery | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Refinery Waste Reduced by Recovering Amines from Oronite Gasoline Additive Production | Reactor | Chemical Recovery/Reuse | Wastewater |
| Toluene Used as Motive Fluid in Toluene Diisocyanate Reactors Is Recovered | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Recovery of Dichloromethane from Pharmaceutical Reaction Distillation Reduces Waste | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Off-Spec Resins Reworked Into Product to Reduce Hazardous Waste Disposal at Resin Plant | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Improvements in Chlorinated Byproduct Recovery from Acetaldehyde Production Reduce Waste | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Lowering Inert Gas Purge for Certain Processes at Chemical Plant Reduces Air Emissions | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Statistical Process Control Reduces Waste from Batch Manufacture of Surfactants | Reactor | Chemical Recovery/Reuse | Solid Waste (Nonhazardous) |
| Spectrophotometer Allows Post Adsorption Solution to Be Used as Sodium Bisulfite Feedstock | Reactor | Chemical Recovery/Reuse | Wastewater |
| Closed-Loop Recycling at Front End of Nustar Unit Reduces Spent Solvent Waste | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Increasing Fresh Catalyst Recovery Reduces Catalyst Promoter Usage, Reduces Promoter Waste | Reactor | Chemical Recovery/Reuse | Solid Waste (Nonhazardous) |
| Modifying Reactor Feed Reduces Methanol Use and Releases in Corrosion Inhibitor Production | Reactor | Chemical Recovery/Reuse | Wastewater |
| Converting Vented Propylene to Raw Material Increases Alcohol Yield, Decreases Emissions | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Emulsion Separation Equipment Recovers Organic Liquids, Reduces Waste from Resin Unit | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Liquid Ring Vacuum Pumps Allow Dichloromethane Recovery from Antibiotic Production | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Spectrophotometer Allows Improved Process Control, Reduces Waste at Animal Feed Plant | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Off-Spec Pellets Re-Extruded and Sold at Plastics Plant | Reactor | Chemical Recovery/Reuse | Solid Waste (Nonhazardous) |
| Surface Active Agents Increase Yield and Reduce Wastewater in Heliofor Dye Manufacture | Reactor | Chemical Recovery/Reuse | Wastewater |
| Improving Control of Caprolactum Polymerization with On-Line Viscosity Meter Reduces Waste | Reactor | Chemical Recovery/Reuse | Solid Waste (Nonhazardous) |
| Recovery of Ethylene Glycol and Decyl Alcohol from Lube Oil Additive Process Reduces Waste | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Using pH Meter to Improve Control in Monoammonium Phosphate Unit Reduces Emissions | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Recovery of Unconverted Allyl Chloride from Epichlorohydrin Production Reduces Waste | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Optimized Reaction Conditions Allow Recycling of Carbon Tetrachloride in DV Ester Unit | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Feed Dryers and Catalyst Rerun Column Reduce Lime Usage and Waste in Alkylation Plant | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Using pH Meters in Heliofor Dye Batch Reactors Increases Yield and Reduces Wastewater | Reactor | Chemical Recovery/Reuse | Wastewater |
| In-Process Dichloromethane Recovery System Reduces Waste During Antibiotic Production | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Upgrades to Olefin Unit Reduce Wastewater Loading and Air Emissions | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Lime Kiln Exhaust Baghouses Reduce Raw Material Usage and Air Releases | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Closed Loop Dilution Steam Generation for Ethane Cracking Reduces Benzene Emissions | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Capturing Fugitive Dust for Recycle Reduces Waste at Chemical Plant | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Distillation of Toluene from Paint Additive Allows Reuse of Toluene, Reduces Waste | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Purifying and Reusing Toluene Stream from UV Acrylic Reactor Reduces Waste | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Improvements in Monitoring and Surfactant Usage Reduce Waste from Chlorpyrifos Manufacture | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Spray Vapor Condenser Recovers Glycol in Polyester Unit, Reduces Air and Water Releases | Reactor | Chemical Recovery/Reuse | Air Emissions |
| Recycling of Off-Spec Product Recovers Hydrogen Cyanide in Acrylonitrile Production | Reactor | Chemical Recovery/Reuse | Hazardous Waste |
| Waste Co-Products Combined to Create Saleable Product at Chemical Plant | Reactor | Co-Product Development | Hazardous Waste |
| Ammonium Sulfate Waste from Air Scrubbers at Dye Plant Used as Fertilizer | Reactor | Co-Product Development | Solid Waste (Nonhazardous) |
| By-Product Sodium Sulfate Solution from CBS Manufacture is Recycled to Paper Industry | Reactor | Co-Product Development | Wastewater |
| Converting Hydrogen Cyanide to Sodium Cyanide Creates Saleable Product, Reduces Waste | Reactor | Co-Product Development | Hazardous Waste |
| Gypsum and Carbon Dioxide Recovered from Titanium Dioxide Production Waste | Reactor | Co-Product Development | Hazardous Waste |
| Back-End Spent Solvent from Nustar Production Sold to Produce Lacquer Thinners | Reactor | Co-Product Development | Hazardous Waste |
| Reducing Waste Streams from Acrylic Sheet Production End Use of Lead for Depolymerization | Reactor | Co-Product Development | Hazardous Waste |
| Sulfuric Acid/Chlorobenzene Extraction at Dye Plant Recovers Product, Creates Co-Product | Reactor | Co-Product Development | Hazardous Waste |
| Waste Hydrogen Cyanide from Acrylonitrile Production Converted to Sodium Cyanide and Sold | Reactor | Co-Product Development |
