Using the Solid Waste Emissions Estimation Tool (SWEET), in 2020, International Solid Waste Association’s (ISWA) Task Force on Closing Dumpsites completed a study of waste sector short-lived climate pollutants (SLCPs) and other greenhouse gas (GHG) emissions in Tyre Caza, Lebanon. SWEET model runs used data on municipal solid waste (MSW) generation, collection, disposal, and diversion under existing and potential alternative management scenarios proposed in an Integrated Waste Management Plan (IWMP) for Tyre Caza. Waste sector emissions reductions exceeding 45% of baseline levels are achievable by 2030 if all dumpsites are closed and remediated, waste burning is stopped, and a new sanitary landfill is developed with 60% methane collection and combustion. Additional emissions reduction accrues from implementing the IWMP and upgrading existing waste treatment facilities to increase waste diversion rates from current levels (22%, including informal sector recycling) to 40%. Estimates of all of Lebanon’s waste sector emissions using SWEET were developed for this mini-review article using published data on the amounts of MSW collected, disposed, and diverted, with adjustments to account for indirect GHG reductions from composting and anaerobic digestion (AD). A 50% reduction in emissions from baseline levels can be achieved by 2034 if, by 2025 diversion of collected wastes to recycling, composting, and AD facilities are increased from 14% to 28%, and all residual MSW is disposed of in sanitary landfills with 65% methane recovery.
Conclusion: SWEET allows solid waste planners to compare emissions resulting from implementing different programs and to quantify the effectiveness of available waste management options in reducing emissions of GHGs and air pollutants. Full article access is on Sage Journals.
About SWEET: SWEET was developed by the U.S. Environmental Protection Agency (EPA) under the auspices of the Global Methane Initiative and in support of the CCAC. Abt Associates and SCS Engineers supported the development of SWEET. SWEET provides estimates for the full suite of GHG and air pollutant emissions in the waste sector, including methane, black carbon, CO2, nitrogen oxides, sulfur oxides, particulates, and organic carbon (CCAC, 2018). Emissions estimates are provided for the following sources: (1) waste collection and transportation, (2) open burning of waste, (3) landfills and open dumps, (4) organic waste management facilities (composting and anaerobic digesters), (5) waste-to-energy facilities and (6) waste handling equipment. Note that emissions from fuel and waste combustion are the only CO2 emissions included in SWEET’s calculations, which exclude biogenic CO2 emissions from waste disposal sites. Published reports by the US EPA (e.g., EPA, 1998, 2015), Intergovernmental Panel on Climate Change (e.g., IPCC, 2006), and other sources (e.g., SCS Engineers, 2007, 2009; United Nations Framework Convention on Climate Change (UNFCCC), 2004) were used to develop calculation methods and emissions factors for the waste sector emissions sources. CO2e conversions use a 100-year Global Warming Potential (GWP). The black carbon GWP is 900 (Bond et al., 2013).
Reducing CO2 is essential for our planet to thrive. At SCS Engineers, we’ve been helping all industries, cities, and states do just that for over 50 years. We focus solely on environmental solutions; in the industry, it’s called pure environmental, along with industry rankings that consistently rank our results in the top tiers.
Our culture is one of sharing. Our professional staff are involved in their communities and global industry associations where we speak, publish and share what works openly with you. Our newest blog series Preventing and Reducing CO2 publishes monthly, bringing you the latest papers, presentations, and case studies on reducing CO2 and targeting climate change.
We hope you find this collection of article, papers, videos, and opinion pieces helpful. The opinion pieces raise logical questions and help us create sustainable solutions rather than quick fixes that don’t stand up economically over time. We include a broader range of topics for landfills, as they diligently work toward reducing CO2 and using proven wastewater treatment options.
Sustainable Living Key to Tackling Climate Change Tackling Climate Change: ISWA’s James Law explains how changing people’s mindsets and behaviors impacts climate change …
The Wise Way to Fight Inevitable Climate Change This opinion piece in the Pittsburgh Post-Gazette by Joseph Duckett describes two major reasons why we need to rethink a country-by-country strategy to fight climate change …
Landfill PFAS Study: Concentrations After Leachate Treatment The objective of this study was to evaluate a cross-section of full-scale on-site landfill treatment systems to measure changes in PFAS concentrations. Leachate samples were collected before and after treatment from 15 facilities and were evaluated for 26 PFAS, including 11 perfluoroalkyl carboxylic acids (PFCAs), 7 perfluoroalkyl sulfonic …
Design to Maximize Landfill Air Space – Your Landfill’s Golden Egg Free Webinar and QA Forum: Modern Landfill Design for Siting and Maximizing Air Space The trend to go larger necessitates more landfill design sophistication and master planning to recoup the growing capital investment upfront. During this month’s SCS Engineers webinar and open forum, our panel will discuss how extending the life of a landfill is a greener option …
EPA’s Brownfields Cleanup Grants $60M – Deadline November 22 Brownfields redevelopment and land recycling cleans up past activities that occurred on properties impacting local ecosystems. These properties help revitalize areas economically while making them safe again. When you’re looking at energy as well as environmental costs, remediation is often greener. The FY 2023 Brownfields Multipurpose, Assessment, Revolving Loan Fund, and Cleanup Grant Guidelines are now available (go to Open Solicitations). The application submission deadline is November 22, 2022.
SCS respects your privacy – you may share these resources individually using social media and email icons on each page. You may share all of the resources by sharing this blog. Look for our next Preventing and Reducing CO2 blog in October! If you missed our August issue – no problem, click here.
Reducing CO2 is essential for our planet to thrive. At SCS Engineers, we’ve been helping all industries, cities, and states do just that for over 50 years. We focus solely on environmental solutions; in the industry, it’s called pure environmental, along with industry rankings that consistently rank our results in the top tiers.
Our culture is one of sharing. Our professional staff are involved in their communities and global industry associations where we speak, publish and share what works openly with you. Our newest blog series will publish monthly, bringing you the latest papers, presentations, and case studies on reducing CO2.
SCS clients entrust us with managing more than 35 million metric tons of anthropogenic CO2e greenhouse gases annually. We collect and beneficially use or destroy enough to offset greenhouse gas emissions from 7.4 million passenger cars annually. That’s more than any other environmental firm in North America and proof of the results we can achieve for you.
A Call for Low Impact Development: the Time is Now, SWS 2022 Low impact developments profoundly impact stormwater management while providing more energy-efficient housing.
The Road Ahead: Carbon Sequestration This video features experts in sequestration and inventorying GHG. The sequestration of liquids is common, but gases may also be sequestered.
Potential Geochemical Effects of CO2 and Brine Leakage – Implications for CCUS Testing and Monitoring Live presentation at the National Carbon Capture Conference on November 8-9 in Des Moines, Iowa. Using an inverse thermodynamic modeling approach to simulate the effect of the progressive intrusion of CO2 and brines from the injection zone on the geochemical composition of the overlying dilute aquifer waters; we can infer which geochemical parameters are most likely to be affected by the potential intrusion of CO2 and brines.
Application of Advanced Characterization Techniques for Identification of Thermogenic and Biogenic Gases This paper discusses the identification of thermogenic and biogenic gases, the typical sources and characteristics of methane in the natural environment, and the methods of discriminating between different sources of methane for fingerprinting.
Roadmap for Sustainable Waste Management in Developing Countries, ISWA, 2022 An accomplished team of sustainability researchers deliver a concise insight into modern waste management practices that acts as a handbook for waste management professionals.
Mini-review of waste sector greenhouse gas and short-lived climate pollutant emissions in Tyre Caza, Lebanon, using the Solid Waste Emissions Estimation Tool (‘SWEET’) A completed a study of waste sector short-lived climate pollutants and other greenhouse gas emissions in Tyre Caza, Lebanon, using SWEET.
SCS respects your privacy – you may share these resources individually using social media and email icons on each page. You may share all of the resources by sharing this blog.
Look for our next Preventing and Reducing CO2 blog in September!
