Technical Development of Waste Sector in Sweden: Survey

MASTER’S THESIS IN ENVIRONMENTAL STRATEGIES RESEARCH
Table 10: Major pollutants and mode of pollution from Pyrolysis-Gasification of MSW
Name of the
Pollutants
Vanadium, ion
Selenium
Nickel, ion
Copper, ion
Molybdenum
Antimony
Cobalt
Zinc, ion
Pollution
medium
Water
Water
Water
Water
Water
Water
Water
Water
Impact categories
Processes stage
Aquatic Depletion, Human disposal of residue
Toxicity
Aquatic Depletion, Human disposal of residue
Toxicity
Aquatic Depletion, Human disposal of residue
Toxicity
Aquatic Depletion, Human disposal of residue
Toxicity
Aquatic Depletion, Human disposal of residue
Toxicity
Aquatic Depletion, Human disposal of residue
Toxicity
Aquatic Depletion, Human disposal of residue
Toxicity
Aquatic Depletion, Human disposal of residue
Toxicity
Terrestrial Ecotoxicity process, disposal of
residue
Mercury
Air
Arsenic Air Terrestrial Ecotoxicity Process
Nickel Air Terrestrial Ecotoxicity Process
Cadmium Air Terrestrial Ecotoxicity Process
Hydrogen fluoride Air Terrestrial Ecotoxicity Process
Benzene
Air
Photochemical Oxidation, process, disposal of
residue
Global Warming, Photochemical process, disposal of
Oxidation
residue
Photochemical Oxidation process, disposal of
residue
Carbondioxide Air
Carbon monooxide
Air
Methane Air Photochemical Oxidation disposal of residue
Sulphur dioxide Air Photo, Acidification Process
Phosphate Water Eutrophication disposal of residue
COD Water Eutrophication disposal of residue
Nitrogen oxide Air Eutrophication, Acidification Process
Primarily, water and air medium pollutants have the significant environmental impact from the
Pyrolysis-Gasification process. Emission control of the P-G process and the volume of the final
residue are the key source of environmental impact by the system. For sustainable waste
management system these problem should be corrected in near future. Since, P-G is an emerging
technology there is scope for improvement in these areas to promote the technology as a proven
technology. Appendix (A-5) shows the 0.01% cutoff of inventory results for the polluter
identification in different impact categories.
Case 2: Comparative LCA model
In case 2, comparative study between Pyrolysis-Gasification and Incineration is conducted. In
this case, transportation impact is not considered for any of the processes. Table A4 shows the
characterization value of different impact categories. All of the MSW treatment facility has the
positive environmental impact on abiotic and ozone layer depletion due to the electricity
KUNGLIGA TEKNISKA HÖGSKOLAN
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