驯化的西湖底泥还原腐殖质影响因素研究  

Influence factors of humus reduction by acclimated sediments of West Lake

作　　者：徐志伟[1] 陈红[1] 

机构地区：[1]浙江大学环境工程研究所,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2010年第2期349-352,共4页Journal of Zhejiang University：Engineering Science

基　　金：国家水体污染控制与治理科技重大资助项目(2008ZX07101-006-08);浙江省科技厅资助项目(2008C23100)

摘　　要：利用驯化的西湖底泥,以蒽醌-2,6-双磺酸盐(AQDS)作为腐殖质模式物,初步研究了温度、pH、不同类型氮源、不同种类金属离子等对底泥微生物还原腐殖质的影响.结果发现,在15～45℃下驯化底泥能还原腐殖质,最适反应温度为30～37℃;在反应初始pH为4～9的条件下可进行腐殖质还原,最适pH为7;不同类型氮源对微生物还原腐殖质的效果依次为NH4Cl>CO(NH2)2>NaNO3>NaNO2;Mg2+、Mn2+促进了微生物还原腐殖质,而Zn2+、Ni2+、Cu2+部分地抑制了腐殖质还原,Hg2+则完全抑制腐殖质还原.By using acclimated sediments of West Lake,the effects of temperature,pH,different nitrogen sources,and different metal ions on humus microbial reduction were preliminarily analyzed with anthraquinone-2,6-disulfonate （AQDS） as humus model compound.Experimental results show that acclimated sediments can reduce humus during 15～45 ℃ and the optimum temperature is 30～37 ℃.Humus reduction was occurred at initiative pH 4～9,and the optimum pH is 7.The degree of humus reductive activities caused by different nitrogen sources is NH4Cl CO（NH2）2 NaNO3 NaNO2.Mg2＋、Mn2＋ enhanced humus microbial reduction,but Zn2＋、Ni2＋、Cu2＋ showed partial inhibition for humus reduction,and Hg2＋ completely inhibited humus reduction.

关 键 词：腐殖质还原菌 蒽醌-2 6-双磺酸盐 腐殖质还原 PH 氮源 金属离子 

分 类 号：X17[环境科学与工程—环境科学]