Environmental Science and Pollution Research Pub Date : 2022-12-08 , DOI: 10.1007/s11356-022-24190-3 Ankita Naykodi 1 , Saurabh C Patankar 2 , Bhaskar N Thorat 3
The mining industry has powered the human endeavor to make life more innovative, flexible, and comfortable. However, it has also led to concerns due to the increasing amount of mining and associated industrial waste. Special attention is highly desired for its proper management and safe disposal in the environment. The problem has only augmented with the increase in the mining costs because of the investments needed for ecological remediation after the mining operation. It is pertinent that the targeted technologies need to be developed to utilize mining and associated industrial waste as a secondary resource to ensure sustainable mining operations. Every perceived waste is a valuable resource that is needed to be utilized to create additional value. In this review, the case of alkaline bauxite residue (red mud)—alumina refinery waste has been discussed at length. The highlight of the proposed work is to understand the importance of alkaliphile-assisted biomining—a sustainable alternative to conventional metal recovery processes. Along with the recovery of metals, pH reduction of red mud is possible through biomining, which ultimately paves the way for its complete utilization. The unique adaptation strategies of alkaliphiles make them more suitable for biomining of red mud through bioleaching, biosorption, and bioaccumulation, which have been discussed here. Furthermore, we have focused on the potential of the indigenous microflora of red mud for metal recovery in addition to its neutralization. The study of indigenous alkaliphiles from red mud, including its isolation and propagation, is crucial for the industrial-scale application of alkaliphile-based technology and has been emphasized.
中文翻译:
赤泥(铝土矿渣)综合利用氧化铝厂碱性废弃物的嗜碱设备
采矿业推动了人类努力使生活更加创新、灵活和舒适。然而,由于采矿和相关工业废物的数量不断增加,这也引起了人们的担忧。对其在环境中的适当管理和安全处置非常需要特别注意。由于采矿作业后的生态修复需要投资,因此随着采矿成本的增加,这个问题只会更加严重。相关的是,需要开发有针对性的技术,以利用采矿和相关工业废物作为二次资源,以确保可持续的采矿作业。每一种感知到的浪费都是一种宝贵的资源,需要利用它们来创造额外的价值。在这篇评论中,对碱性铝土矿残渣(赤泥)——氧化铝精炼厂废料的情况进行了详细讨论。拟议工作的重点是了解嗜碱菌辅助生物采矿的重要性——传统金属回收工艺的可持续替代方案。随着金属的回收,通过生物采矿可以降低赤泥的 pH 值,最终为其完全利用铺平道路。嗜碱菌独特的适应策略使其更适合通过生物浸出、生物吸附和生物富集进行赤泥的生物开采,这些已在本文中进行了讨论。此外,除了中和之外,我们还关注了赤泥土生土长的微生物群在金属回收方面的潜力。赤泥土中嗜碱菌的研究,包括其分离和繁殖,