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Waste, 5. Recycling

  1. Günter Fleischer1,
  2. Fathi Habashi2,
  3. Georg Menges3,
  4. Bernd Bilitewski4,
  5. Ulrich Loll5

Published Online: 15 OCT 2011

DOI: 10.1002/14356007.o28_o05

Ullmann's Encyclopedia of Industrial Chemistry

Ullmann's Encyclopedia of Industrial Chemistry

How to Cite

Fleischer, G., Habashi, F., Menges, G., Bilitewski, B. and Loll, U. 2011. Waste, 5. Recycling. Ullmann's Encyclopedia of Industrial Chemistry. .

Author Information

  1. 1

    Institut für Technischen Umweltschutz, Technische Universität Berlin, Berlin, Germany

  2. 2

    Department of Mining, Metallurgical, and Materials Engineering, Laval University, Quebec City, Canada

  3. 3

    Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany

  4. 4

    Ingenieurgesellschaft für Technischen Umweltschutz, Dresden, Germany

  5. 5

    Ingenieurbüro für Abwasser-, Abfall- und Aquatechnik, Darmstadt, Germany

Publication History

  1. Published Online: 15 OCT 2011

Abstract

The article contains sections titled:

1.Introduction
1.1.General Aspects
1.2.Forms of Recycling
1.3.Prerequisites for and Limitations of Recycling
1.4.Selection of Disposal Route
1.5.Recycling Rates
2.Plastics
2.1.Introduction
2.2.Mechanical Recycling
2.2.1.Chemical Basis for Plastics Recycling
2.2.2.Pure Wastes
2.2.3.Mixed and Soiled Plastics Wastes
2.2.4.Fiber Composites and Other Thermosets
2.2.5.Outlook for Mixed Wastes in Blends
2.3.Degradation to Molecular Constituents
2.3.1.Biodegradable Plastics
2.3.2.Chemical Recycling
2.3.2.1.Chemical Degradation
2.3.2.2.Thermal Degradation
2.4.Combustion (Energy or Thermal Recycling)
2.4.1.Combustion in Waste Incinerators
2.4.2.Shredded Waste as Fuel for Sewage Sludge
2.4.3.Combustion with Pure Oxygen
3.Solvents
3.1.Introduction
3.2.Processing of Solvent Wastes
3.2.1.General Aspects
3.2.2.Mechanical Separation of Solids
3.2.3.Treatment of Halogenated Solvents
3.2.4.Treatment of Halogen-Free Solvents
4.Paints
4.1.Introduction
4.2.Recycling of Paint Residues
4.2.1.General Aspects
4.2.2.Internal Paint Recycling
4.2.3.External Paint Recycling
5.Metals
5.1.Introduction
5.2.Production Waste Recycling
5.3.Recycling during Product Use and Product Reconditioning
5.4.Product Waste Recycling
5.4.1.Product-Specific Recycling
5.4.1.1.Automobiles
5.4.1.2.Catalytic Converters
5.4.1.3.Lead-Acid Batteries
5.4.1.4.Dry-Cell Batteries
5.4.1.5.Electronics Scrap; Circuit Boards
5.4.2.Material-Specific Recycling
5.4.2.1.Steel
5.4.2.2.Aluminum
5.4.3.Recycling of Material Wastes
5.5.Recycling of Residues
6.Sludges
6.1.General
6.2.Quantities of Sewage Sludge Treated
6.3.Requirements for Sludge Recycling and Disposal
6.4.Sewage Sludge Treatment Processes
6.5.Unit Operations in Sewage Sludge Treatment
6.5.1.Thickening and Dewatering
6.5.2.Stabilization
6.5.3.Disinfection
6.5.4.Conditioning
6.5.5.Drying
6.6.Quantities of Other Sludges;Disposal Options
6.6.1.Industrial Production Sludges
6.6.2.Water Treatment Plant Sludges
6.6.3.Dredging Sludges
6.6.4.Sludges from Mining