New research suggests municipalities could improve recycling and composting rates by changing how often they collect garbage and organics.
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In South Africa, landfill practices impose a huge burden on the economy, environment and communities.
When food scraps and garden clippings are sent to landfill, it’s not just a waste of nutrients and water. The rotting organic matter trapped in landfill produces methane, a potent greenhouse gas.
Most food waste still goes into red bins of mixed waste bound for landfill. It’s using up precious landfill space and harming the environment when it could produce valuable compost and biogas instead.
Even on ‘Mars’, humans waste food. And some types of food are more likely to end up in the bin than others.
Across Africa less than 10% of the population is connected to a sewer system. But the waste could be used elsewhere.
Top contributors
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Associate Professor, Jimma University
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Research Director and Senior Lecturer (Food Systems), University of Technology Sydney
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PhD student in Environment and Agrifood, Cranfield University
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Deputy Director Research and Graduate Studies, Senior Lecturer of Soil Microbiology, University of Zambia, University of Zambia
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Associate Professor, Institute for Sustainable Futures, University of Technology Sydney
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Associate Professor in Soil Chemistry, Cranfield University
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Retired Honorary Associate Professor in the School of Civil and Environmental Engineering, University of the Witwatersrand
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Environmental Engineering PhD candidate; sustainability and food waste expertise, RMIT University
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Professor - School of Agriculture and Food Science, The University of Queensland
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Professor of Waste Management, The University of Queensland
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Research Fellow, School of Agriculture and Food Sciences, The University of Queensland
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PhD Student, Department of Geography, Planning and Environment, Concordia University