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首页> 外文期刊>Journal of Sustainable Development >Pre-Feasibility Study for Coupling Electronic Waste Recycling With Desert Greening in Africa
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Pre-Feasibility Study for Coupling Electronic Waste Recycling With Desert Greening in Africa

机译：非洲电子废物回收与沙漠绿化耦合的前期可行性研究

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Africa suffers from the following serious problems: (i) the distribution of desertification vulnerability suggests that every country is prone to environmental desertification, and desertification processes currently affect about 46% of the total land area; (ii) the Basel Convention is an international agreement that regulates cross-border shipments of toxic waste, but this tight regulation for prohibiting export of end-of-life electronic devices (so-called e-waste) to the third world has resulted in an increase in illegal transport to Africa. The present research is intended to conduct a technical pre-feasibility study in order to tackle the above-mentioned problems. About 80% of e-waste comes from television sets and computers, and cathode ray tubes (CRTs) correspond to about 2/3 of the total weight ? the neck and funnel parts of CRTs contain toxic materials. The manufacture of foam glasses is considered as safe CRT treatment. The control of soil water is significant to cultivate plants the desert, and the waste-based foam particles can improve water retention in arid soils; i.e. a key proposal is the production of soil amendment from CRT glass. The water-use efficiencies of this amendment’s layer are higher than those of the control. Furthermore, leaching fractions of heavy metals from the produced foam glass amendment are lower than the statutory limits.
机译：非洲面临以下严重问题：（i）荒漠化脆弱性的分布表明，每个国家都容易发生环境荒漠化，目前荒漠化进程影响着约46％的土地总面积; （ii）《巴塞尔公约》是一项国际协议，对有毒废物的跨境运输进行了管制，但是这项严格的规定禁止向第三世界出口报废电子设备（所谓的电子废物）到非洲的非法运输有所增加。本研究旨在进行技术预可行性研究，以解决上述问题。约80％的电子废物来自电视机和计算机，而阴极射线管（CRT）约占总重量的2/3。 CRT的颈部和漏斗部分包含有毒物质。泡沫玻璃的生产被认为是安全的CRT处理。控制土壤水分对于在沙漠中种植植物具有重要意义，而基于废物的泡沫颗粒可以改善干旱土壤中的保水能力;即一项关键建议是用CRT玻璃生产土壤改良剂。此修订的图层的用水效率高于对照的用水效率。此外，从生产的泡沫玻璃改性物中浸出的重金属含量低于法定限值。

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