# How organic waste could power the circular economy | Gamuchirai Mutezo | TEDxJohannesburg Source: https://www.youtube.com/watch?v=M6CAFneHHlg Recap page: https://rapidrecap.app/video/M6CAFneHHlg Generated: 2025-12-11T17:43:58.637+00:00 --- ## Quick Overview Gamuchirai Mutezo advocates for a mindset shift in Africa to treat organic waste as a valuable resource rather than a problem, detailing a circular economy model that converts waste into biogas, compost, biochar, biofuel, and animal feed, thereby creating economic opportunities and reducing landfill use. **Key Points:** - Across Sub-Saharan Africa (SSA), only about 44% of waste is collected, with 31% openly dumped, 37% landfilled, 19% recycled/composted, and 11% incinerated. - The speaker champions a 'Separation at Source' (S@S) approach, urging people to move away from linear waste disposal to circular economy practices. - Organic waste, which is a major component of city waste, can be valorized into five key outputs: Biogas, Compost, Biochar, Biofuel, and Animal Feed. - Biogas production from anaerobic digestion provides decentralized energy for heating, cooking, and lighting. - The circular model creates opportunities for local innovators and entrepreneurs, supporting green jobs and providing soil nutrients (digestates) for agriculture. - The presentation highlights the need for intentional investment and engagement from public, private, and CBO sectors to support this transition. - The speaker challenges the audience to immediately change their waste habits at home, work, and in decision-making spaces. ![Screenshot at 00:13: The speaker, Gamuchirai Mutezo, begins her presentation outdoors at TEDxJohannesburg with the title slide 'NOT WASTING THIS PARTICULAR STORY Rethinking Africa's Urban Organic Waste' displayed behind her.](https://ss.rapidrecap.app/screens/M6CAFneHHlg/00-00-13.png) **Context:** Gamuchirai Mutezo delivered this TEDxJohannesburg talk titled 'Not Wasting This Particular Story: Rethinking Africa’s Urban Organic Waste' in October 2025. She addresses the significant challenge of rapidly growing urban waste in African cities, emphasizing that current linear waste management practices are unsustainable and environmentally damaging. Her core argument centers on reframing organic waste as a vital resource within a circular economy framework, which she illustrates through a detailed demonstration site model. ## Detailed Analysis Gamuchirai Mutezo argues that African cities must stop treating waste as a linear problem and instead adopt a circular economy model, particularly for organic waste. She cites statistics showing low collection rates (only 44% across SSA) and high rates of dumping and landfilling. Mutezo presents a five-part valorization system for organic waste: Biogas (for energy), Compost, Biochar, Biofuel, and Animal Feed. She stresses that this process not only addresses environmental issues like climate change but also creates significant socio-economic benefits, such as green jobs and income generation for local innovators and waste reclaimers. The speaker explicitly calls for intentional efforts across public, private, and community sectors to support this transition, urging the audience to start practicing separation at the source in their daily lives. The presentation concludes by showing a diagram of the 'Waste Valorisation Demonstration Site' model, illustrating how waste can be turned into valuable outputs like soil nutrients and energy, thus closing the loop. ### Introduction and Problem Setup - Speaker introduces the challenge of urban waste in Africa, noting low collection rates (44%) and high landfill use; calls for a mindset shift to avoid 'wasting this particular story'. - Mentions travel experiences in Lagos, Kinshasa, Cairo, Johannesburg, and DRC to illustrate the scale of the issue. ### Waste Types and Linear Economy - Identifies major waste components including organics, construction/demolition waste, textiles, and packaging; criticizes the traditional linear economy model (consume, dispose). - Highlights that 31% of waste is openly dumped, and 37% is landfilled. ### The Circular Solution - Organic waste is presented as a resource that can produce Biogas, Compost, Biochar, Biofuel, and Animal Feed; emphasizes that these outputs create energy and soil nutrients. - Discusses the importance of small-scale, decentralized systems, even at the household level, to ensure waste is properly separated. ### Current Practices & Potential - Slides detail current realities (low collection/recycling) versus potential (Waste Champions, SME development, mandates). - The speaker champions the role of local innovators and entrepreneurs in closing the loop. ### Call to Action - Urges the audience to be intentional about separating waste and reviewing their relationship with waste, framing it as a resource rather than just a disposable item. ![Screenshot at 00:04: The word "COUNTDOWN" dynamically displayed on a bright yellow background, marking the start of the main content sequence.](https://ss.rapidrecap.app/screens/M6CAFneHHlg/00-00-04.png) ![Screenshot at 00:21: Speaker Gamuchirai Mutezo greeting the audience outdoors at the TEDxJohannesburg event.](https://ss.rapidrecap.app/screens/M6CAFneHHlg/00-00-21.png) ![Screenshot at 00:41: Slide detailing population figures for major African cities \(Cairo 23.1m, Lagos 17.2m, Kinshasa 17.8m, Jo'burg 6.4m\) under the title 'URBANISATION IN AFRICAN CITIES'.](https://ss.rapidrecap.app/screens/M6CAFneHHlg/00-00-41.png) ![Screenshot at 03:15: Slide titled 'MODULE 101: WASTE TYPES' showing images of various waste streams: scrap metal, organic waste, mixed landfill waste, glass bottles, and wood/construction debris.](https://ss.rapidrecap.app/screens/M6CAFneHHlg/00-03-15.png) ![Screenshot at 12:11: Slide detailing the 'IMPACT OF S@S' \(Separation at Source\) circular model, showing five stages: Waste Generation, Separation, Collection & Distribution, Processing, and Disposal.](https://ss.rapidrecap.app/screens/M6CAFneHHlg/00-12-11.png)