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Influence of surfactants on detoxification of chromium-containing slag by Achromobacter sp. CH-1
Author(s): 
Pages: 41-47
Year: Issue:  1
Journal: Journal of Central South University of Technology

Keyword:  表面活性剂 Achromobacter sp. CH-1 铬渣 生物解毒;
Abstract: 为提高细菌Achromobacter sp.CH-1(简称为A.sp. CH-1)解毒铬渣过程中酸溶性Cr(Ⅵ)的浸出率,研究不同表面活性剂对A.sp. CH-1的生长及其解毒铬渣效果的影响;通过考察表面活性剂的加入对细菌生长、Cr(Ⅵ)还原、铬渣中Cr(Ⅵ)浸出率以及浸出体系pH值的影响,评价不同表面活性剂促进A.sp. CH-1解毒铬渣的效果。研究结果表明:加入低浓度的表面活性剂对A.sp. CH-1菌的生长及其还原Cr(Ⅵ)没有显著影响;阴离子型表面活性剂十二烷基硫酸钠(SDS)、非离子型表面活性剂吐温60、吐温80都能提高A.sp. CH-1解毒铬渣的效果,其最佳用量分别为75,200和250mg/L;在此最佳用量下,铬渣中Cr(Ⅵ)的浸出率比原来分别提高约8%,9%和11%;阳离子表面活性剂十二烷基三甲基溴化铵(DTAB)对铬渣的解毒效果没有明显提高。
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