金属基吸附剂除硝酸盐氮研究进展

Research progress on nitrate nitrogen removal by metal-based adsorbents

伴随着水体硝酸盐污染问题逐步加剧,吸附法去除硝酸盐的研究也取得了突破。金属粒子不仅能提高吸附剂的比表面积和稳定性,而且在阴离子吸附过程中展现出不同的亲和性。介绍了不同金属基吸附剂对硝酸盐氮的吸附效果,以及不同金属去除硝酸盐氮的机理等,其中纳米金属粒子的应用能够极大地提高吸附剂吸附性能,是很好的研究方向。

With the gradual intensification of nitrate contamination in water bodies,a breakthrough has been made in the study of nitrate removal by adsorption.Metal particles could not only increase the specific surface area and stability of the adsorbent,but also exhibit different affinities during the anion adsorption process.The adsorption effect of different metal based adsorbents on nitrate nitrogen,and the mechanism of removing nitrate nitrogen by different metals were introduced.The application of nano-metal particles could greatly improve the adsorption performance of adsorbents,which is a good research direction.