The impacts of ozonation on oil sands process-affected water biodegradability and biofilm formation characteristics in bioreactors

被引：90

作者：

Hwang, Geelsu ^{[1
]}

Dong, Tao ^{[1
]}

Islam, Md Sahinoor ^{[1
]}

Sheng, Zhiya ^{[1
]}

Perez-Estrada, Leonidas A. ^{[1
]}

Liu, Yang ^{[1
]}

El-Din, Mohamed Gamal ^{[1
]}

机构：

[1] Univ Alberta, Dept Civil & Environm Engn, Edmonton, AB T6G 2W2, Canada

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 130卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Oil sands process-affected water; Biofilm reactors; Organic compounds; Naphthenic acids; Biodegradation; NAPHTHENIC ACIDS; MOLECULAR-STRUCTURE; TAILINGS; COMMUNITIES; ALBERTA;

D O I：

10.1016/j.biortech.2012.12.005

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

To examine the effects of the ozonation process (as an oxidation treatment for water and wastewater treatment applications) on microbial biofilm formation and biodegradability of organic compounds present in oil sands process-affected water (OSPW), biofilm reactors were operated continuously for 6 weeks. Two types of biofilm substrate materials: polyethylene (PE) and polyvinylchloride (PVC), and two types of OSPW-fresh and ozonated OSPWs-were tested. Endogenous microorganisms, in OSPW, quickly formed biofilms in the reactors. Without ozonation, the bioreactor (using endogenous microorganisms) removed 13.8% of the total acid-extractable organics (TAO) and 18.5% of the parent naphthenic acids (NAs) from fresh OSPW. The combined ozonation and biodegradation process removed 87.2% of the OSPW TAO and over 99% of the OSPW parent NAs. Further UPLC/HRMS analysis showed that NA biodegradability decreased as the NA cyclization number increased. Microbial biofilm formation was found to depend on the biofilm substrate type. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：269 / 277

页数：9

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