聚乙烯醇-海藻酸钠固定Flavobacterium sp.对地表水的修复效果  

Treatment efficiency of polyvinyl alcohol and sodium alginate immobilized Flavobacterium sp.

作　　者：李海波[1] 李英华[1] 王洪[1] 王鑫[1] 邹轶[1] 孙铁珩[1] 

机构地区：[1]沈阳大学 区域污染环境生态修复教育部重点实验室,辽宁沈阳110044

出　　处：《沈阳大学学报（自然科学版）》2012年第2期1-5,共5页Journal of Shenyang University：Natural Science

基　　金：国家自然科学基金资助项目(50908151;51108275);辽宁省自然科学基金资助项目(20082195);辽宁省高校优秀人才支持计划资助项目(LR201028)

摘　　要：从河流底泥、河水水体中分离得到一株黄杆菌Flavobacteriumsp.(Oil 56).用聚乙烯醇(polyvinyl alcohol,PVA)和海藻酸钠(sodium alginates,Na.Alg)为包埋载体,以五硼酸铵和氯酸铁溶液为交联剂,固定黄杆菌Flavobacteriumsp.Oil 56得到固定化球形颗粒.对比研究了固定化颗粒与游离菌对地表水的降解效果,结果表明在COD初始质量浓度为77～205 mg/L时,用固定化Flavobacteriumsp.Oil 56修复48h的COD去除率为48.2%～50.6%,比游离菌的降解效率提高了42.7%～45.8%.利用扫描电镜(SEM)研究了固定化球形颗粒在降解过程中的微环境变化.One strain was isolated from hydrocarbon-polluted surface water and sludge and was representative of Flavobacterium sp. （strain Oil-56）. Polyvinyl alcohol （PVA） and sodium alginates （Na·Alg） embedding technology were adopted for Flavobacteriurn sp. immobilization. Secondly, the study investigated the treatment efficiency of the immobilized Flavobacteriurn sp. The immobilized Flavobacterium sp. beads made in this study were suitable for remediation of COD- contaminated surface water with a wide range of initial COD values. At initial COD 77-205 mg/L, the residual COD values for immobilized cells were 38-98 mg/L after 48 h, with removal efficiencies of 48. 2%-50. 6%, which was 42. 7%-45.8% higher than the free cells. The Scanning Electronic Microscope （SEM） analysis indicated that the bead microstructure was suitable for growth of Flavobacterium sp.

关 键 词：固定化微生物 地表水 黄杆菌 微环境 

分 类 号：X703.1[环境科学与工程—环境工程]