Cometabolism of Fluoroanilines in the Presence of 4-Fluoroaniline by Ralstonia sp. FD-1Report as inadecuate




Cometabolism of Fluoroanilines in the Presence of 4-Fluoroaniline by Ralstonia sp. FD-1 - Download this document for free, or read online. Document in PDF available to download.

Journal of Chemistry - Volume 2015 2015, Article ID 206150, 9 pages -

Research ArticleZhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China

Received 4 December 2014; Revised 1 February 2015; Accepted 2 February 2015

Academic Editor: Teodorico C. Ramalho

Copyright © 2015 Wenling Cao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A strain of Ralstonia sp. FD-1 capable of using 4-fluoroaniline 4-FA as the sole carbon and nitrogen source was investigated for its ability to utilize 4-FA isomers 2-FA, 3-FA and homologs 2,4-DFA, 3,4-DFA, and 2,3,4-TFA. Both 4-FA and 3-FA could be mineralized as the sole carbon and nitrogen source by FD-1. 2-FA, 2,4-DFA, 3,4-DFA, and 2,3,4-TFA could not be degraded by FD-1, respectively, and were selected as secondary substrates for cometabolism with 500 mg-L 4-FA as growth substrate. Bacterial growth OD600, F

concentrations, and fluoroanilines contents were measured to determinate the degradation ability of 4-FA isomers and homologs by FD-1. FD-1 growth was inhibited by 2,4-DFA, 3,4-DFA, and 2,3,4-TFA at higher concentrations 400 mg-L, except for 2-FA. Complete fluoroanilines degradation was achieved while incomplete defluorination was characterized by the stoichiometric fluoride release indicating partial degradation but not total mineralization. When fluoroaniline was supplied to the resting cells of strain FD-1, a relatively effective removal was showed. Strain FD-1 had broadened application prospect of toxicity and low nutrition fluoroanilines wastewater.





Author: Wenling Cao, Erxi Song, Dongsheng Shen, and Meizhen Wang

Source: https://www.hindawi.com/



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