文献类型：期刊文献

中文题名：铬离子对序批式好氧生物反应器出水中溶解性微生物产物的影响

英文题名：EFFECT OF Cr^(6+) ON SOLUBLE MICROBIAL PRODUCTS IN EFFLUENTS FROM AEROBIC SEQUENCING BATCH REACTORS

作者：黄光团[1];金刚[1];吴景辉[1];刘勇弟[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2007

卷号：26

期号：1

起止页码：66

中文期刊名：环境化学

外文期刊名：Environmental Chemistry

收录：CSTPCD;;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目(50478068)

语种：中文

中文关键词：序批式生物反应器;铬离子;溶解性微生物产物;多聚糖;蛋白质;DNA.

外文关键词：sequencing batch reactor, soluble microbial product, polysaccharide, protein, DNA.

摘要：考察了序批式好氧生物反应器(SBR)中,重金属铬离子对溶解性微生物产物(SMP)总量、分子量分布及其组成中多聚糖、蛋白质和DNA含量的影响.铬离子的生物容许浓度在2mg·l-1之下,SMP总量与铬离子浓度存在指数关系:SMP=24·94e0·593C.SMP的分子量呈双峰分布,且分子量小于1kDa的部分基本上占50%以上.SMP中的DNA含量随铬离子浓度的增加而降低,在显著水平α=0·05时,DNA含量与铬离子浓度呈线性相关.
The effects of Cr^6＋ on amount, molecule weight （MW） distribution, and content of polysaccharide, protein, DNA in soluble microbial products （SMP）were investigated in aerobic sequencing batch reactors. The microbial permissible concentration of Cr^6＋ was 2 mg·l^-1 under this experimental condition. Below the microbial permissible concentration of Cr^6＋ , the amount of SMP was an exponential function of concentration of Cr^6＋ , in which SMP = 24.94e^0.593C The MW distribution of SMP manifested a bimodal pattern with more than 50% of SMP having a MW less than 1 kDA. The content of DNA in SMP reduced with the increase of concentration of Cr^6＋. By the test of significance, it was found that the content of DNA was in linear relation with concentration of Cr^6＋ at the 5 % significant level.