微波辐照生物质解毒铬渣的对比研究  

Comparative Study on Detoxification of Chromium Residue with Different Biomass Irradiated by Microwave

作　　者：刘仁龙[1] 刘作华[1] 孙大贵[1] 陶长元[1] 李刚[1] 邓宝林[2] 

机构地区：[1]重庆大学化学化工学院,重庆400030 [2]美国密苏里大学木与环境工程系哥伦比亚密苏里,美国65211

出　　处：《压电与声光》2007年第5期600-602,共3页Piezoelectrics & Acoustooptics

基　　金：国家创新研究群体科学基金(50621403);重庆市自然科学基金资助项目(CSCT2006BB7181)

摘　　要：利用农林生物质解毒Cr(Ⅵ)是一种廉价的环境修复手段。实验研究了生物质(玉米秸秆、稻壳、锯末)与铬渣的质量比、微波功率、微波辐射时间等因素对铬渣解毒效果的影响。研究结果表明,3种生物质对铬渣均有较好解毒效果。在微波功率为800 W,作用时间为5.5 min,生物质与铬渣质量比为3的条件下,铬渣中Cr(Ⅵ)的去除率可达95%。Application of agricultural and forestry biomass to detoxifying chromium is a promising and cost-effective approach for the remediation of chromium mine tailings. In this study, factors controlling the detoxification performance of chromium residue were studied, including the ratio of biomass （corn stalk, rice hull, sawdust） to chromium residue, microwave power, and microwave irradiation time. Experimental results indicated that three types of biomass had similar detoxification performances. The percentage removal of Cr（Ⅵ） in the chromium residues was over 95% under the biomass to chromium residue ratio of 3 and microwave radiation of 5.5 min at 800 W.

关 键 词：生物质 微波 铬渣解毒 铬渣 

分 类 号：X705[环境科学与工程—环境工程]