三种羟肟酸捕收剂的微生物降解研究  

Study on the Biodegradation of Three Hydroxamic Acid Collectors

作　　者：胡纯[1] 王灿 龚文琪[3] 梅光军[3] 

机构地区：[1]武汉工业学院化学与环境工程学院,武汉430023 [2]湖北博实城乡能源环境工程有限公司,武汉430071 [3]武汉理工大学资源与环境工程学院,武汉430070

出　　处：《湖北农业科学》2013年第11期2505-2507,共3页Hubei Agricultural Sciences

基　　金："十一五"国家科技支撑计划项目(2007BAB15B01);国家高技术研究发展计划("863"计划)项目(2007AA06Z123);武汉工业学院引进(培养)人才科研启动资金资助项目(2012RZ01);湖北省建设科技计划项目

摘　　要：采用摇瓶振荡法研究克雷伯氏菌属(Klebsiella)微生物对2-羟基-3-萘甲羟肟酸、苯甲羟肟酸和水杨羟肟酸3种常见的羟肟酸类捕收剂的生物降解。试验结果表明,该微生物对此类捕收剂具有较好的降解效果。捕收剂被微生物降解12 d后,模拟废水中2-羟基-3-萘甲羟肟酸的降解率为44.56%,苯甲羟肟酸的降解率为85.04%,水杨羟肟酸的降解率为62.04%。降解过程中,废水中的OD600 nm均呈先升高后降低的变化趋势,表明微生物在降解过程初期大量生长繁殖,随后由于降解作用致使废水中可供利用的碳源减少,导致微生物大量衰亡。Klebsiella microorganism was applied in the biodegradation of three common hydroxamic acid collector such as 2hydroxy-3-naphthalene hydroxamic acid,benzyl hydroxamic acid and salicylic hydroxamic acid with the conical flask oscillating method.The results showed that the microorganism used in the experiments had good biodegradation effect against these collectors.After 12 d of biodegradation,the degradation efficiency of 2-hydroxy-3-naphthalene hydroxamic acid in simulated wastewater was 44.56%,of benzyl hydroxamic acid was 85.04%,and of salicylic hydroxamic acid was 62.04%.During the biodegradation process,the OD600 nm of wastewater increased first and then declined.It indicated that a large number of microorganisms rapidly grew and reproduced in early stage of biodegradation,subsequently,the microorganisms gradually declined due to the decrease of available carbon source in the biodegradation process.

关 键 词：羟肟酸 捕收剂 微生物降解 细菌细胞密度 

分 类 号：S[农业科学]