凹凸棒石/炭复合吸附材料研究进展

Research progress on attapulgite/carbon composites used as adsorbent

近年来,黏土矿物/炭复合吸附材料因具有来源丰富、结构可控和性能稳定等特点,成为碳基复合吸附材料研究热点之一。凹凸棒石是一种天然含水富镁铝硅酸盐黏土矿物,独特的孔道结构和一维棒晶使其成为理想的吸附材料和载体材料。本文综述了凹凸棒石/炭复合吸附材料的研究进展,围绕自然资源的高值化和废弃物的资源化利用,着重介绍了利用凹凸棒石脱色废土构筑环境友好型凹凸棒石/炭复合吸附材料的方法及再生应用进展,总结比较了不同方法制备复合吸附材料的形貌和性质及其对不同类型污染物的去除效果,并展望了凹凸棒石/炭复合吸附材料的未来发展方向,以期为黏土矿物/炭复合材料的研发及其在环境修复领域中的应用提供技术支撑。

In recent years,clay mineral/carbon composite materials have become one of the research hotspots of carbon-based composite adsorbents due to their rich source,controllable structure,stable performance,etc.Attapulgite is a natural hydrous magnesium aluminosilicate clay mineral.Owing to the unique pore structure and one-dimensional rod-like crystal,it can be served as an ideal adsorption material and carrier.The research progress on attapulgite/carbon composite adsorbents was reviewed in this paper.Based on the high value of natural resources and the resource utilization of wastes,it mainly introduced the preparation methods and the regeneration studies of eco-friendly attapulgite/carbon composite adsorbents derived from spent bleaching earth.The morphology and properties of compositions were analyzed,and then the removal properties of the attapulgite/carbon adsorbents to different pollutants were summarized and compared.Finally the development direction of attapulgite/carbon composite materials was proposed in order to promote the development of research of clay mineral/carbon composite materials and provide technical support for application in environmental remediation.