摘要
为了将对虾养殖池环境修复作用菌Lt7511投放到虾池底部降解有机污染物 ,并且不造成二次污染 ,以沸石作为固定化载体 ,研究了影响固定化的因素、固定化菌降解有机物的性质及保藏方法。结果表明 ,沸石在500℃灼烧2h可除去绝大部分吸附水分 ,增大表面积 ;固定化过程中沸石粒度、菌液的浓度及体积对沸石吸附作用菌的能力都有影响 ,每kg60目沸石可吸附0.46g菌体 (干质量 ) ;沸石固定化菌对饵料浸出液的降解效果明显高于非固定化菌 ;
In order to degrade the organic pollution in the bottom of shrimp pond by functional bacteria Lt7511without polluting the pond again,zeolite was used to immobilize the bacteria.In this paper,the factors influencing the immobilization,the absorption characteristics and the storage method of immobilized bacteria were studied.The results showed that most water contained in the zeolite was removed by heating at500℃for two hours and that the size of zeolite,the concentration and the volume of the bacteria suspension influenced the effect of immobilization.As a result of optiˉmization of immobilization procedure,0.46g bacteria(dry weight)were absorbed on1kg zeolite(granule size:60).The immobilized bacteria had a much higher degradation ability than free bacteria,and the survival rate of immobilized bacteria conserved in vacuum is much higher than in air.
出处
《海洋科学》
CAS
CSCD
北大核心
2004年第8期5-8,75,共5页
Marine Sciences
基金
国家高技术研究发展计划(819-02-07)
国家自然科学基金(39670581)
国家九五攻关项目子专题(96-922-02-02-02)
关键词
对虾养殖池环境
生物修复
沸石
固定化
Shrimp culture environment
bioremediation
zeolite
immobilization
