National Taiwan Ocean University Institutional Repository:Item 987654321/46112
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 28611/40652
造访人次 : 759433      在线人数 : 51
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46112

题名: Effects of the Headspace Gas Composition on Anaerobic Biotransformation of o-, m-, and p-toluic acid in sediment slurries.
作者: Shiu-Mei Liu
Wei-Chiung Chi
贡献者: 國立臺灣海洋大學:海洋生物研究所
关键词: o-,m- and p-Toluic acid
Anaerobic biotransformation
Headspace gas
Sediment slurries
Most Probable Number (MPN) tests
日期: 2003
上传时间: 2018-05-02T06:02:55Z
出版者: Journal of Environmental Science and Health, Part A
摘要: Abstract: Composition of the headspace gas affected the biotransformation pattern of toluic acid isomers in anoxic sediment slurries. Under an N2 atmosphere, o- and m-, and p-toluic acid (20–25 mg L−1) were biotransformed in 100 days, 77 days, and 148 days, respectively, with a lag period of 50 days, 49 days, and 50 days, respectively. Under a CO2 atmosphere, the same toluic acid isomers were biotransformed by the sediment microorganisms in 16–25 days without a lag period. CO2 thus increased the biotransformation rates. The presence of H2, on the other hand, decreased the biotransformation rates: in most cases, adding H2 gas (5% and 20% to the N2 and CO2 atmospheres, respectively) not only increased the lag period but also decreased the maximum biotransformation rates. These effects were especially noticeable for the N2 atmosphere. Under N2, the maximum biotransformation rates of the toluic acid isomers were in the order o-toluic acid>m-toluic acid>p-toluic acid. However, under CO2, the maximum biotransformation rates were reversed, i.e., p-toluic acid>m-toluic acid>o-toluic acid. The presence of the methanogen inhibitor bromoethanesulfonic acid (BESA) slowed the biotransformation rates of p-toluic acid, and this together with the population dynamics of the acetogenic bacteria in the sediment slurries, suggested that acetogenic bacteria were involved in the degradation pathway. However, their exact role remains unclear.
關聯: 38(6) pp.1099-1113
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46112
显示于类别:[海洋生物研究所] 期刊論文

文件中的档案:

档案 描述 大小格式浏览次数
index.html0KbHTML39检视/开启


在NTOUR中所有的数据项都受到原著作权保护.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈