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聚乙烯醇-海藻酸钠固定Microbacterium sp. S2-4的微环境分析

李海波1;杨瑞崧2;李培军1,3;巩宗强3;孙丽娜1;孙铁珩1   

  1. 1沈阳大学沈阳环境工程重点实验室, 沈阳 110044;
    2上海交通大学环境科学与工程学院, 上海 200030;
    3中国科学院沈阳应用生态研究所, 沈阳 110016
  • 收稿日期:2006-06-08 修回日期:2006-07-16 出版日期:2007-01-10 发布日期:2007-01-10

Micro-environmental analysis of polyvinyl alcohol- and sodium alginate immobilized Microbacterium sp. S2-4 granules

LI Hai-bo1; YANG Rui-song2; LI Pei-jun1,3; GONG Zong-qiang3; SUN Li-na1; SUN Tie-heng1   

  1. 1Shenyang Key Laboratory of Environmental Engineering, Shenyang University, Shenyang 110044, China;
    2School of Environmental Science and Technology, Shanghai Jiao Tong University, Shanghai 200030, China;
    3Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2006-06-08 Revised:2006-07-16 Online:2007-01-10 Published:2007-01-10

摘要: 以聚乙烯醇(polyvinyl alcohol,PVA)和海藻酸钠(sodium alginates,Na·Alg)作为包埋载体,以五硼酸铵和氯酸铁、氯酸铝溶液作为交联剂,固定微杆菌Microbacterium sp. S2-4,制备得到固定化球形颗粒。利用扫描电子显微镜(SEM)分析了在去除污染地表水COD过程中固定化球形颗粒的微环境变化,指出物理阻隔、吸附和种群排斥联合作用是固定化微环境对不利外界环境的主要屏蔽机理;同时还指出了通过该方法制备得到的固定化颗粒存在的结构缺陷。

关键词: 林窗, 更新, 幼苗, 常绿阔叶林, 哀牢山

Abstract: With polyvinyl alcohol and sodium alginate as immobilizing carriers, and borate ammonium, ferrite chlorate and aluminum chlorate as cross-linking reagents,the spherical granules of immobilized Microbacterium sp. S2-4 were prepared, and their microenvironmental changes in the process of COD- removing from contaminated surface water were studied by scanning electron microscope (SEM). The results indicated that physical block, adsorption, and the expulsion by predominant microbial populations were the main factors shielding the positive effects of the granules. Some structural disfigurements of the immobilized granules were pointed out.

Key words: Gap, Regeneration, Tree seedling, Evergreen broad-leaved forest, Ailao Mountains