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Treatment of environmental contamination using sepiolite: current approaches and future potential.
Environmental Geochemistry and Health ( IF 4.2 ) Pub Date : 2020-09-11 , DOI: 10.1007/s10653-020-00705-0
Na Song 1 , Andrew Hursthouse 1, 2 , Iain McLellan 1 , Zhenghua Wang 2
Affiliation  

To evaluate the potential of sepiolite-based materials to resolve environmental pollution problems, a study is needed which looks at the whole life cycle of material application, including the residual value of material classified as waste from the exploitation of sepiolite deposits in the region or from its processing and purification. This would also maximize value from the exploitation process and provide new potential for local waste management. We review the geographical distribution of sepiolite, its application in the treatment of potentially toxic elements in soil and across the wider landscape, an assessment of modification and compositional variation of sepiolite-based applications within site remediation and wastewater treatment. The potential of sepiolite-based technologies is widespread and a number of processes utilize sepiolite-derived materials. Along with its intrinsic characteristics, both the long-term durability and the cost-effectiveness of the application need to be considered, making it possible to design ready-to-use products with good market acceptance. From a critical analysis of the literature, the most frequently associated terms associated with sepiolite powder are the use of lime and bentonite, while fly ash ranked in the top ten of the most frequently used material with sepiolite. These add improved performance for the inclusion as a soil or wastewater treatment options, alone or applied in combination with other treatment methods. This approach needs an integrated assessment to establish economic viability and environmental performance. Applications are not commonly evaluated from a cost–benefit perspective, in particular in relation to case studies within geographical regions hosting primary sepiolite deposits and wastes that have the potential for beneficial reuse.



中文翻译:

使用海泡石处理环境污染:当前方法和未来潜力。

为了评估海泡石基材料解决环境污染问题的潜力,需要进行一项研究,研究材料应用的整个生命周期,包括该地区或从海泡石矿床开采中归类为废物的材料的剩余价值。其加工和纯化。这还将使开发过程中的价值最大化,并为当地废物管理提供新的潜力。我们回顾了海泡石的地理分布,其在土壤和更广阔的景观中潜在毒性元素的处理中的应用,在场地修复和废水处理中基于海泡石的应用的改性和成分变化的评估。基于海泡石的技术的潜力是广泛的,许多工艺都利用了海泡石衍生的材料。除了其固有特性外,还需要考虑应用程序的长期耐用性和成本效益,这使得设计具有良好市场接受度的即用型产品成为可能。从文献的批判性分析来看,与海泡石粉末相关的最常见术语是使用石灰和膨润土,而粉煤灰在海泡石最常用的材料中排名前十。这些可单独或与其他处理方法结合使用,作为土壤或废水处理的选择,可提高性能。这种方法需要进行综合评估,以确定经济可行性和环境绩效。

更新日期:2020-09-12
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