粘土矿物质和纳米颗粒对皮革工厂废物污染土壤中铬的分馏的影响

Effects of clay minerals and nanoparticles on the fractionation of chromium in the soil polluted by leather factory waste

这项研究旨在调查时间,粘土矿物质和纳米颗粒(NPs)对皮革工厂废物(LFW)污染的土壤中铬(Cr)分离的影响。将土壤与LFW混合,然后分别用5%和1%的粘土矿物(膨润土和沸石)和纳米颗粒(MgO,TiO2和ZnO)处理受污染的土壤。样品在25°孵育15–180天C和恒定的水分。孵育后,通过顺序提取程序将对照土壤和处理过的土壤中的铬分馏。结果表明,NPs是从LFW处理的土壤中去除Cr离子的有效吸附剂,可用于降低其环境风险。

the purpose of this study was to investigate the effects of time,clay minerals and nanoparticles(NPS)on the separation of chromium(CR)from soil contaminated by leather factory waste(LFW).The soil was mixed with LFW,and then contaminated soil was treated with 5%and 1%clay minerals(bentonite and zeolite)and nanoparticles(MgO,TiO2 and ZnO),respectively.The samples were incubated at 25°for 15-180 days C and constant moisture.After incubation,chromium in control soil and treated soil was fractionated by sequential extraction procedure.The results show that NPs is an effective adsorbent to remove Cr from LFW treated soil and can be used to reduce its environmental risk.