Environmental assessment of existing and alternative options for management of municipal solid waste in Brazil

Priscila De Morais Lima*, Diogo Appel Colvero, Ana Paula Gomes, Henrik Wenzel, Valdir Schalch, Ciprian Cimpan

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Life cycle assessment (LCA) was used to evaluate and compare three different categories of management systems for municipal solid waste (MSW) in Brazil: (1) mixed waste direct disposal systems, (2) separate collection systems, based on wet-dry streams, and (3) mixed waste mechanical-biological systems, including materials recovery. System scenarios were built around main treatment techniques available and applicable in developing countries, and considered barriers as well as potential synergies between waste management and other industrial production. In the first category systems, we measured the impact magnitude of improper disposal sites (semi-controlled and controlled dumps) still used for approximately 40% of collected MSW, and found that sanitary landfills could decrease it 3–5 fold (e.g. GWP, from 1100–1200 to 250–450 kg CO2 eq. t−1 waste). As an alternative, waste incineration did not show significant benefits over sanitary landfilling, due to limitations in energy utilization and the low-carbon background electricity system. Category two of systems, revealed recycling benefits and the necessity as well as potential risks of biological treatment for wet streams. Simple wet-dry collection could result in relatively high levels of contamination in compost outputs, which should be mitigated by intensive pre- and post-treatment. Potential impact of air emissions from biological degradation processes was important even after anaerobic digestion processes. Biogas upgrading and use as vehicle fuel resulted in bigger savings compared to direct electricity production. Lastly, category three, mechanical-biological systems, displayed savings in most environmental impact categories, associated with materials recovery for recycling and refuse-derived fuel (RDF) production and utilization in cement manufacturing.

Original languageEnglish
JournalWaste Management
Volume78
Pages (from-to)857-870
ISSN0956-053X
DOIs
Publication statusPublished - 2018

Fingerprint

environmental assessment
municipal solid waste
savings
electricity
recycling
industrial production
incineration
biogas
compost
waste management
cement
environmental impact
manufacturing
life cycle
developing world
fold
degradation
carbon
air
material

Keywords

  • Developing countries
  • Life Cycle Assessment (LCA)
  • Material recycling
  • Mechanical-biological systems
  • Municipal Solid Waste (MSW)

Cite this

Lima, Priscila De Morais ; Colvero, Diogo Appel ; Gomes, Ana Paula ; Wenzel, Henrik ; Schalch, Valdir ; Cimpan, Ciprian. / Environmental assessment of existing and alternative options for management of municipal solid waste in Brazil. In: Waste Management. 2018 ; Vol. 78. pp. 857-870.
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title = "Environmental assessment of existing and alternative options for management of municipal solid waste in Brazil",
abstract = "Life cycle assessment (LCA) was used to evaluate and compare three different categories of management systems for municipal solid waste (MSW) in Brazil: (1) mixed waste direct disposal systems, (2) separate collection systems, based on wet-dry streams, and (3) mixed waste mechanical-biological systems, including materials recovery. System scenarios were built around main treatment techniques available and applicable in developing countries, and considered barriers as well as potential synergies between waste management and other industrial production. In the first category systems, we measured the impact magnitude of improper disposal sites (semi-controlled and controlled dumps) still used for approximately 40{\%} of collected MSW, and found that sanitary landfills could decrease it 3–5 fold (e.g. GWP, from 1100–1200 to 250–450 kg CO2 eq. t−1 waste). As an alternative, waste incineration did not show significant benefits over sanitary landfilling, due to limitations in energy utilization and the low-carbon background electricity system. Category two of systems, revealed recycling benefits and the necessity as well as potential risks of biological treatment for wet streams. Simple wet-dry collection could result in relatively high levels of contamination in compost outputs, which should be mitigated by intensive pre- and post-treatment. Potential impact of air emissions from biological degradation processes was important even after anaerobic digestion processes. Biogas upgrading and use as vehicle fuel resulted in bigger savings compared to direct electricity production. Lastly, category three, mechanical-biological systems, displayed savings in most environmental impact categories, associated with materials recovery for recycling and refuse-derived fuel (RDF) production and utilization in cement manufacturing.",
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author = "Lima, {Priscila De Morais} and Colvero, {Diogo Appel} and Gomes, {Ana Paula} and Henrik Wenzel and Valdir Schalch and Ciprian Cimpan",
year = "2018",
doi = "10.1016/j.wasman.2018.07.007",
language = "English",
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Environmental assessment of existing and alternative options for management of municipal solid waste in Brazil. / Lima, Priscila De Morais; Colvero, Diogo Appel; Gomes, Ana Paula; Wenzel, Henrik; Schalch, Valdir; Cimpan, Ciprian.

In: Waste Management, Vol. 78, 2018, p. 857-870.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Environmental assessment of existing and alternative options for management of municipal solid waste in Brazil

AU - Lima, Priscila De Morais

AU - Colvero, Diogo Appel

AU - Gomes, Ana Paula

AU - Wenzel, Henrik

AU - Schalch, Valdir

AU - Cimpan, Ciprian

PY - 2018

Y1 - 2018

N2 - Life cycle assessment (LCA) was used to evaluate and compare three different categories of management systems for municipal solid waste (MSW) in Brazil: (1) mixed waste direct disposal systems, (2) separate collection systems, based on wet-dry streams, and (3) mixed waste mechanical-biological systems, including materials recovery. System scenarios were built around main treatment techniques available and applicable in developing countries, and considered barriers as well as potential synergies between waste management and other industrial production. In the first category systems, we measured the impact magnitude of improper disposal sites (semi-controlled and controlled dumps) still used for approximately 40% of collected MSW, and found that sanitary landfills could decrease it 3–5 fold (e.g. GWP, from 1100–1200 to 250–450 kg CO2 eq. t−1 waste). As an alternative, waste incineration did not show significant benefits over sanitary landfilling, due to limitations in energy utilization and the low-carbon background electricity system. Category two of systems, revealed recycling benefits and the necessity as well as potential risks of biological treatment for wet streams. Simple wet-dry collection could result in relatively high levels of contamination in compost outputs, which should be mitigated by intensive pre- and post-treatment. Potential impact of air emissions from biological degradation processes was important even after anaerobic digestion processes. Biogas upgrading and use as vehicle fuel resulted in bigger savings compared to direct electricity production. Lastly, category three, mechanical-biological systems, displayed savings in most environmental impact categories, associated with materials recovery for recycling and refuse-derived fuel (RDF) production and utilization in cement manufacturing.

AB - Life cycle assessment (LCA) was used to evaluate and compare three different categories of management systems for municipal solid waste (MSW) in Brazil: (1) mixed waste direct disposal systems, (2) separate collection systems, based on wet-dry streams, and (3) mixed waste mechanical-biological systems, including materials recovery. System scenarios were built around main treatment techniques available and applicable in developing countries, and considered barriers as well as potential synergies between waste management and other industrial production. In the first category systems, we measured the impact magnitude of improper disposal sites (semi-controlled and controlled dumps) still used for approximately 40% of collected MSW, and found that sanitary landfills could decrease it 3–5 fold (e.g. GWP, from 1100–1200 to 250–450 kg CO2 eq. t−1 waste). As an alternative, waste incineration did not show significant benefits over sanitary landfilling, due to limitations in energy utilization and the low-carbon background electricity system. Category two of systems, revealed recycling benefits and the necessity as well as potential risks of biological treatment for wet streams. Simple wet-dry collection could result in relatively high levels of contamination in compost outputs, which should be mitigated by intensive pre- and post-treatment. Potential impact of air emissions from biological degradation processes was important even after anaerobic digestion processes. Biogas upgrading and use as vehicle fuel resulted in bigger savings compared to direct electricity production. Lastly, category three, mechanical-biological systems, displayed savings in most environmental impact categories, associated with materials recovery for recycling and refuse-derived fuel (RDF) production and utilization in cement manufacturing.

KW - Developing countries

KW - Life Cycle Assessment (LCA)

KW - Material recycling

KW - Mechanical-biological systems

KW - Municipal Solid Waste (MSW)

U2 - 10.1016/j.wasman.2018.07.007

DO - 10.1016/j.wasman.2018.07.007

M3 - Journal article

VL - 78

SP - 857

EP - 870

JO - Waste Management

JF - Waste Management

SN - 0956-053X

ER -