Title :
Role of Fe(III) in Microbial Activity and Extracellular Polymeric Substances
Author :
Lihui, Huang ; Bo, Zhang ; Guopeng, Sun ; Baoyu, Gao
Author_Institution :
Shandong Key Lab. of Water Pollution Control & Resource Reuse, Shandong Univ., Jinan, China
Abstract :
Over the past few decades, most of research has been conducted on the extraction method, composition and cell surface characteristics connected with EPS. It was recently proposed that activated sludge floes are comprised of different types of EPS with distinct metal ion binding characteristics. Fe (III) was a common wastewater composition, in practice, which may promote the biofilm activity and amount distinctly. But few detailed research was conducted on the correlation Fe (III) with the composition and microbiology activity with EPS. Experimental results indicated that the variation of Fe (III) concentration in influent produced biofilm with different abundances of EPS and different composing and microbial activity characteristics. The biofilm that was fed on large amount of Fe (III) had more EPS than the biofilm that was fed on little amount of Fe (III). The contents of polysaccharide and protein improved considerably as Fe (III) participated in. The results demonstrate that the Fe (III) had a positive effect on EPS and activity of biofilm. The performance of biological degradation was much more closely correlated with the amount of protein than with the amount of polysaccharide.
Keywords :
biodegradable materials; biotechnology; environmental degradation; polymers; proteins; sludge treatment; wastewater treatment; Fe; activated sludge floes; biofilm activity; biological degradation; cell surface characteristics; extracellular polymeric substances; extraction method; influent; metal ion binding characteristics; microbial activity; microbiology activity; polysaccharide; protein; wastewater composition; Bioreactors; DNA; Extracellular; Iron; Polymers; Proteins; Wastewater; Fe (III); biofilm reactor (BR); extracellular polymeric substances (EPS); microbial activity;
Conference_Titel :
Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2011 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-61284-278-3
Electronic_ISBN :
978-0-7695-4350-5
DOI :
10.1109/CDCIEM.2011.352