Gao Lihui, Liu Yanhong, Xu Keyi, Bai Lu, Guo Nan, Li Shulei
State Key Laboratory of Water Resource Protection and Utilization in Coal Mining Beijing 102211 China
School of Environment Science and Spatial Informatics, China University of Mining and Technology Xuzhou 221116 China.
RSC Adv. 2024 Dec 12;14(53):39285-39296. doi: 10.1039/d4ra06071g. eCollection 2024 Dec 10.
The production of coal gangue, a by-product of coal mining and washing, is rapidly increasing due to growing energy consumption. As the accumulated coal gangue has not been appropriately utilized, this has resulted in a squander of resources, waste disposal problems, and environmental pollution issues. However, coal gangue, a form of solid waste, exhibits various potential applications in the field of recycling. Currently, the processing capacity and utilization rate of coal gangue are insufficient to meet the demands of global low-carbon environmental protection. As such, this paper provides a detailed overview of the physical and chemical properties of coal gangue and its resource utilization methods in the environmental field, particularly in soil remediation, soil reclamation, the preparation of adsorbents for heavy metals, dyes, and CO, and as catalysts for organic degradation and catalytic cracking. This review highlights the significance of coal gangue classification according to its properties for the comprehensive utilization of gangue. Additionally, we briefly introduce and discuss suggestions for future directions of research and development in this area. Nevertheless, with regard to the environmental impact of secondary pollution and the efficiency of coal gangue utilization, there remain numerous obstacles that hinder future research. This review is expected to provide significant insights into the development of coal gangue utilization strategies, potentially facilitating the efficient and practical large-scale management of solid waste.
煤矸石作为煤炭开采和洗选的副产品，随着能源消耗的增加，其产量正在迅速上升。由于累积的煤矸石未得到妥善利用，导致了资源浪费、废物处理问题和环境污染问题。然而，煤矸石作为一种固体废物，在回收利用领域具有多种潜在应用。目前，煤矸石的处理能力和利用率不足以满足全球低碳环境保护的需求。因此，本文详细概述了煤矸石的物理和化学性质及其在环境领域的资源利用方法，特别是在土壤修复、土地复垦、重金属、染料和一氧化碳吸附剂的制备以及作为有机降解和催化裂化催化剂方面。本综述强调了根据煤矸石性质进行分类对于煤矸石综合利用的重要性。此外，我们简要介绍并讨论了该领域未来研发方向的建议。然而，关于二次污染的环境影响和煤矸石利用效率，仍然存在许多阻碍未来研究的障碍。本综述有望为煤矸石利用策略的发展提供重要见解，可能有助于实现固体废物的高效和实际大规模管理。
