CAJ | 학술논문

文章以硫酸盐还原菌（Desulfovibrio desulfurican）为试验菌株，探讨了不同生长因子对其分泌胞外聚合物（extracellular polymeric substances ，简称EPS）的影响及其产生的EPS对Cu2＋的吸附作用。结果表明，在 pH值、初始接种TS 、w（F/M ）和ρ（COD）/ρ（SO42-）分别为7、182 mg/L、18．1和3∶1．0的条件下SRB菌分泌的EPS最多；在 pH值、初始接种TS 、w（F/M）和ρ（COD）/ρ（SO42-）分别为8、136．5 mg/L、45．3和3∶0．3的条件下，对硫酸盐还原菌进行培养获得的EPS对Cu2＋的吸附性能最佳。对吸附前后的 EPS进行FT IR光谱表征，结果表明在EPS与Cu2＋的结合过程中，蛋白质的作用要强于多糖。
문장이류산염환원균（Desulfovibrio desulfurican）위시험균주，탐토료불동생장인자대기분비포외취합물（extracellular polymeric substances ，간칭EPS）적영향급기산생적EPS대Cu2＋적흡부작용。결과표명，재 pH치、초시접충TS 、w（F/M ）화ρ（COD）/ρ（SO42-）분별위7、182 mg/L、18．1화3∶1．0적조건하SRB균분비적EPS최다；재 pH치、초시접충TS 、w（F/M）화ρ（COD）/ρ（SO42-）분별위8、136．5 mg/L、45．3화3∶0．3적조건하，대류산염환원균진행배양획득적EPS대Cu2＋적흡부성능최가。대흡부전후적 EPS진행FT IR광보표정，결과표명재EPS여Cu2＋적결합과정중，단백질적작용요강우다당。
In this paper ,the sulfate-reducing bacteria(Desulfovibrio desulfurican) were used as the test strains to explore the impact of different growth factors on the components of extracellular poly-meric substances(EPS) and the sorption ability of these EPS to the Cu2+ .The experimental results showed that the amount of EPS secreted by SRB were maximum when pH value ,initial inoculums , the ratio of w(F/M) andρ(COD)/ρ(SO42 -) were 7 ,182 mg/L ,18 .1 and 3∶1 .0 respectively .When these conditions were at 8 ,136 .5 mg/L ,45 .3 and 3∶0 .3 respectively ,the EPS were more easily combined with Cu2+ .The FTIR spectrum of unloaded and Cu2+-loaded EPS indicated that protein played a major role compared with polysaccharide at the process of sorption .