University of Seville, School of Engineering, Chemical and Environmental Engineering Department, Camino de los Descubrimientos s/n 41092, Seville, Spain.
Waste Manag. 2024 Oct 1;187:31-38. doi: 10.1016/j.wasman.2024.06.029. Epub 2024 Jul 8.
A Circular Waste Management alternative is considered in this paper in which a complete ash valorization process is proposed for an Integrated Gasification with Combined Cycle fly ash, trying to extract maximum value from this waste before it is discarded. In the paper, germanium, a scarce resource vital in our modern society, is first extracted from fly ash using water, with an extraction yield of 85%, and subsequently, the leached fly ash is used in the manufacture of fire-resistant boards containing 60% ash, thereby avoiding its disposal in a landfill. The potential environmental impact caused by the two stages of the process was analyzed, and the final effluent was considered to achieve a zero-discharge objective. This paper contributes to the development of a more sustainable management alternative for an industrial waste produced in increased amounts and provides the basis for a symbiotic coupling relationship among various industrial sectors.
本文提出了一种循环废物管理的替代方案，该方案考虑对整体煤气化联合循环粉煤灰进行完全灰分增值处理，在将废物丢弃之前，尽量从废物中提取最大价值。本文首先使用水从粉煤灰中提取出了一种在现代社会中非常宝贵的稀有资源——锗，提取率为 85%。随后，浸出粉煤灰被用于制造含有 60%粉煤灰的防火板，从而避免将其填埋。分析了这两个过程阶段对环境的潜在影响，认为最终的废水可以实现零排放目标。本文为处理日益增多的工业废物提供了更可持续的管理替代方案，并为各工业部门之间建立共生耦合关系奠定了基础。
