Onesmo Clashon, Mabhuye Edmund B, Ndaki Patrick M
Center for Climate Change Studies, University of Dar Es Salaam, Dar Es Salaam, Tanzania.
Urban Forum (Johannesbg). 2023 Apr 28:1-18. doi: 10.1007/s12132-023-09493-z.
The increased demand for secondary materials, particularly scrap metals, in cities due to development activities in both emerging economies and developing countries has increased the demand for recycling materials. It accelerated the growth of the circular economy and climate-smart development. This paper investigated the synergy between sustainable solid waste management and the circular economy in Tanzanian cities by examining the scrap business's categories, quantity, market, and nature and the scrap business's environmental benefits in Arusha. The study found that iron steel, cast iron, and aluminum were the most common scrap metal recovered and traded in Arusha. Offices and institutions, households, and garages were the primary sources of scraps. Over 314 tonnes of scrap metal were traded monthly in the city. The scrap business helped the steel industries save 300 tons of iron ore, 164 tons of coal, and 64 tons of bauxite while lowering their monthly energy consumption by 56%. Scrap metal trade contributes significantly to recycling, climate-smart, circular economy, and improving livelihoods. As a result, we call for a synchronized sustainable development and solid waste management system that connects product design, development manufacturing, and end-of-life products to improve the circular economy.
由于新兴经济体和发展中国家的发展活动，城市对二次材料，特别是废金属的需求增加，这也增加了对回收材料的需求。这加速了循环经济和气候智能型发展的增长。本文通过研究阿鲁沙废品业务的类别、数量、市场、性质以及废品业务的环境效益，调查了坦桑尼亚城市可持续固体废物管理与循环经济之间的协同作用。研究发现，钢铁、铸铁和铝是阿鲁沙回收和交易最常见的废金属。办公室和机构、家庭以及车库是废品的主要来源。该市每月交易超过314吨废金属。废品业务帮助钢铁行业节省了300吨铁矿石、164吨煤炭和64吨铝土矿，同时将其每月能源消耗降低了56%。废金属贸易对回收、气候智能型、循环经济以及改善生计做出了重大贡献。因此，我们呼吁建立一个同步的可持续发展和固体废物管理系统，将产品设计、开发制造和报废产品联系起来，以改善循环经济。
