摘要:利用表面腐蚀的方法,在纳米零价铁表面生成FeS,制备Fe~0/FeS磁性杂化材料,研究了硫铁比、超声时间、溶解氧、投加量对Cr(Ⅵ)去除效果的影响。研究表明:Fe~0/FeS对Cr(Ⅵ)的去除效率随着硫铁比的增大先增加后降低;超声有助于纳米零价铁的分散及表面FeS的生成,但超声时间过长会导致去除效率下降;氧气对还原反应的影响是不利的。Fe~0/FeS杂化材料投加量为0.8 g/L时,对Cr(Ⅵ)的去除效率达到100%,此时去除能力约为25 mg/g。
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