水葫芦重金属吸附性能再利用研究  

Heavy Metal Adsorption Properties of Eichhornia crassipes

作　　者：王洪[1] 李志鹏[1] 王超洋[1] 吴海波[1] 靳向煜[1] 

机构地区：[1]东华大学产业用纺织品国家工程研究中心,上海201620

出　　处：《环境科学与技术》2012年第7期33-35,121,共4页Environmental Science & Technology

基　　金：上海市自然基金(11ZR1400900)

摘　　要：文章将从河道中打捞的水葫芦分别进行干燥、颗粒化及纤维提取处理,然后研究其对Cu2+的吸附特性,并进一步研究了颗粒状水葫芦在不同浓度Cu2+溶液和不同pH值条件下的Cu2+吸附特性。结果发现水葫芦经过颗粒化和纤维提取处理后,其最大Cu2+吸附量基本保持不变,但吸附速率稍有提高。水葫芦颗粒袋对Cu2+溶液的吸附性能基本不受溶液pH值的影响,对痕量Cu2+溶液具有较好的吸附效果,基本达到国家污水综合排放标准规定的Cu2+含量的三级标准,是一种可以推广的再利用水葫芦重金属离子吸附性能的实用方法。Live Eichhornia crassipes collected from a river were treated by drying,granulating and fibering respectively,and Cu2 ＋ adsorption properties were studied as well.Adsorption properties of Eichhornia crassipes pellets were investigated under different pH levels and initial Cu2 ＋ concentrations.It was found that Eichhornia crassipes samples all kept similar maximal Cu2 ＋ capacity while Eichhornia crassipes pellet and fiber showed faster Cu2 ＋ adsorption rate.The maximal Cu2 ＋ adsorption capacity of Eichhornia crassipes bag did not change obviously with pH levels and it showed excellent adsorption properties of trace Cu2 ＋ solution,which satisfied Grade Ⅲ of Cu2 ＋ content in national discharge standard.It is practical to reuse as a heavy metal adsorption material by granulating and bagging in a kind of nonwoven fabrics.

关 键 词：水葫芦 重金属 吸附 痕量 

分 类 号：X703[环境科学与工程—环境工程]