Formation characteristics of an anoxygenic photosynthetic bacterial biofilm in a photorotating biological contactor for azo dye wastewater treatment

doi:10.1002/jctb.4303

	Formation characteristics of an anoxygenic photosynthetic bacterial biofilm in a photorotating biological contactor for azo dye wastewater treatment
	Wang, Xingzu; Wang, Yu; Cheng, Xiang; Sun, Dezhi; Ren, Yiwei; Xu, Guihua
刊名	JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
	2015
卷号	90 期号:1 页码:176-184
ISSN号	0268-2575
DOI	10.1002/jctb.4303
通讯作者	Wang, XZ (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, 266 Fangzheng Ave, Chongqing 400714, Peoples R China.
英文摘要	BACKGROUNDMost photobioreactors used for wastewater treatment with anoxygenic photosynthetic bacteria (APB) are based on suspended cultures because APB have poor biofilm-forming ability. In this study, a photo-rotating biological contactor (PRBC) was applied for the culture of APB biofilm using azo wastewater, with a particular emphasis on the formation of APB biofilm and its relationship to other microorganisms and exopolysaccharides (EPS). RESULTSThe PRBC was successfully used for the cultivation of APB biofilm and in the removal of chemical oxygen demand and color. In situ analysis showed that APB biofilm formation can be divided into two distinct stages: development and differentiation. In the development stage, nonphotosynthetic filamentous microorganisms initially proliferated on a disc surface and promoted the adherence of APB. In the differentiation stage, filamentous microorganisms and their EPS matrices caged APB in the inner layer and stabilized the APB biofilm. During biofilm stratification, the biofilm biomass and APB numbers reached 24.20.63g L-1 and 4.8 +/- 0.6x10(8)CFU (g dry biofilm)(-1), respectively. The dominant APB in the mature biofilm were identified as Rhodopseudomonas, Rhodomicrobium, and Chlorobium. CONCLUSION APB with poor biofilm-forming ability formed a stable biofilm in the PRBC with the aid of nonphotosynthetic microorganisms. (c) 2014 Society of Chemical Industry
语种	英语
WOS记录号	WOS:000345845400023
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/4365]
专题	中国科学院重庆绿色智能技术研究院环境友好化学过程研究中心
作者单位	(1) Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China; (2) Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xingzu,Wang, Yu,Cheng, Xiang,et al. Formation characteristics of an anoxygenic photosynthetic bacterial biofilm in a photorotating biological contactor for azo dye wastewater treatment[J]. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY,2015,90(1):176-184.
APA	Wang, Xingzu,Wang, Yu,Cheng, Xiang,Sun, Dezhi,Ren, Yiwei,&Xu, Guihua.(2015).Formation characteristics of an anoxygenic photosynthetic bacterial biofilm in a photorotating biological contactor for azo dye wastewater treatment.JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY,90(1),176-184.
MLA	Wang, Xingzu,et al."Formation characteristics of an anoxygenic photosynthetic bacterial biofilm in a photorotating biological contactor for azo dye wastewater treatment".JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY 90.1(2015):176-184.