Related Experiment Video
Updated: Jul 9, 2026
08:43
Transformation of Organic Household Leftovers into a Peat Substitute
Published on: July 9, 2019
Carbon--making the right choice for waste management in developing countries
J R Barton1, I Issaias, E I Stentiford
1School of Civil Engineering, University of Leeds, Leeds LS2 9JT, UK. j.r.barton@leeds.ac.uk
Waste Management (New York, N.Y.)
|December 7, 2007
Summary
Developing countries can attract investment through waste management projects that reduce greenhouse gas emissions. Composting and anaerobic digestion are the most effective options for carbon reduction and attracting clean development mechanism (CDM) investment.
Area of Science:
- Environmental Science
- Waste Management
- Climate Change Mitigation
Background:
- The Clean Development Mechanism (CDM) incentivizes greenhouse gas emission reduction in developing nations.
- Waste management projects, particularly those avoiding landfill, are emerging as viable CDM initiatives.
- Advanced waste treatment technologies have faced barriers due to limited technical support in developing countries.
Purpose of the Study:
- To compare the carbon emission impacts of various waste management options in developing countries.
- To assess the potential for attracting investment through improved waste management infrastructure under CDM.
- To identify the most effective waste management strategies for carbon reduction.
Main Methods:
- Evaluation of six waste management scenarios: open dumping, passive landfill venting, landfill gas capture with flaring, landfill gas capture with energy production, composting, and anaerobic digestion with electricity production.
- Comparative analysis based on effective carbon emissions, considering various assumptions.
- Sensitivity analysis by modifying waste composition to test the robustness of conclusions.
Main Results:
- Sanitary landfill without gas management had the highest carbon emissions, exceeding even open dumping.
- Landfills with gas flaring or energy recovery showed significantly lower positive carbon emissions compared to uncontrolled methods.
- Composting resulted in neutral carbon emissions, while anaerobic digestion with energy production was carbon negative.
Conclusions:
- Composting and anaerobic digestion are the most environmentally beneficial waste management options for developing countries, offering significant carbon reduction.
- Improved waste management infrastructure presents a substantial opportunity for attracting CDM investment.
- Projects can potentially yield over 1 tCO2e/t of waste in Kyoto credits, demonstrating economic viability.
Related Concept Videos
01:30Environmental Applications of Microorganisms
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
01:30Biological Treatment of Effluent and Waste Water
Biological wastewater treatment relies on the metabolic activity of microorganisms to remove pollutants from sewage. In modern treatment systems, this process is organized into sequential stages that progressively reduce solid material, dissolved organic matter, and microbial contamination. Each stage plays a distinct role in improving water quality and preparing the effluent for safe discharge or reuse.Primary and Secondary TreatmentPrimary treatment is a physical process that removes large...
01:27Bioplastics
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
01:43Sustainable Development
As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
01:26Design Example: Sustainability in Concrete Building
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground cistern.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground cistern.
01:23Microbial Fuel Cells
Microbial fuel cells (MFCs) are bioelectrochemical devices that generate electricity by exploiting the metabolic processes of electrogenic bacteria. These systems provide a renewable energy source and serve as an innovative method for treating organic waste, such as wastewater.A typical MFC consists of two chambers: an anoxic (oxygen-free) compartment that houses the bacteria and an oxic (oxygen-rich) compartment that contains oxygen as the terminal electron acceptor. Many MFCs use proton...