会议专题

Removal Organic Nitrogen Compounds from Petrochemical Wastewater via Biocatalysts

The organic nitrogen compounds, such as Aniline and Pentyl Amine, are toxic chemicals and present in the effluent of many industries. In the paper, the degradation of pentyl amine and aniline were studied under optimal conditions, and observed the degradation pathway. The isolated strain was obtained as PN1001 and is a member of the Pseudomonas species, and it was capable of degrading pentyl amine and aniline. The optimal reactor conditions for the degradation of a mixture of pentyl amine and aniline at a concentration ranging between 150 and 200mg/L were found to be 30℃ at a pH of 7.0, under a reaction time of 24h and a maximum solution dissolved oxygen level of 6 mg/L. Under such conditions, the strain PN1001 degraded 93 % and 89 % of the pentyl amine and aniline, respectively, aniline being more toxic and demonstrating a more complex degradation pathway. The strain PN1001 degraded more contaminants when both were present because of the π and σ electron cloud coordination functions of aniline and pentyl amine, respectively, presumed to reduce the toxic effect of aniline. Once inoculated with the strain, oil refinery sludge degraded 93 % and 88% of the pentyl amine and aniline, compared to the strain alone which degraded 72 % and 82%, likely because of the sludges buffering effect against the toxic environment.

biodegradation petrochemical wastewater organic nitrogen compounds

WANG Li LIU Changfeng JIANG Binhui LIU Guang

Faculty of Environmental & Bio-Engineering, Shenyang Institute of Chemical Technology, Shenyang 1101 Faculty of Environmental & Bio-Engineering, Shenyang Institute of Chemical Technology, Shenyang 1101 College of College of Resource and Civil Engineering, Northeastern University, Shenyang 110006, Liao

国际会议

2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)

北京

英文

2007-11-13(万方平台首次上网日期,不代表论文的发表时间)