期刊
BIORESOURCE TECHNOLOGY
卷 187, 期 -, 页码 97-105出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.03.091
关键词
Oil sands tailings pond water; Naphthenic acids; Biodegradation; Algae-bacteria consortium; Detoxification
资金
- NSERC-CRD
- OSTRF
In this study, the biodegradation of total acid-extractable organics (TAOs), commonly called naphthenic acids (NAs), was investigated. An indigenous microbial culture containing algae and bacteria was taken from the surface of a tailings pond and incubated over the course of 120 days. The influence of light, oxygen and the presence of indigenous algae and bacteria, and a diatom (Navicula pelliculosa) on the TAO removal rate were elucidated. The highest biodegradation rate was observed with bacteria growth only (without light exposure) with a half-life (t(1/2)) of 203 days. The algae-bacteria consortium enhanced the detoxification process, however, bacterial biomass played the main role in toxicity reduction. Principal component analysis (PCA) conducted on FT-IR spectra, identified functional groups and bonds (representing potential markers for biotransformation of TAOs) as follows: hydroxyl, carboxyl and amide groups along with C-H, aryl-H, aryl-OH and N-H bonds. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据