Paper Title:
Effect of Copper (II) on the Characteristics of Aerobic Granules
  Abstract

Aerobic granules were cultivated successively in column sequencing batch reactor (SBR) with the glucose as carbon source. The effect of copper (II) on the characteristics of aerobic granules was studied. Results showed that the physical, morphology and extracellular polymeric substances (EPS) of aerobic granules were influenced in different degree under different concentrations of copper (II) in sequencing batch reactor (SBR). The appropriate Cu2+ can be adsorbed by the microorganisms in aerobic granules under the functions of chelation and displacement of heavy metals. Under the Cu2+ concentration of 0.5~3.0mg/L, the stable MLSS and better settleable granules with higher S.G. and lower SVI can been attained in the reactors. The sludge can maintain the granules in stable till the Cu2+ concentration increases to 20.0mg/L. The ratios of EPSC/EPN distribute in 6.60~7.01 steadily under the Cu2+ concentration of 0.5~10.0mg/L.However, excess Cu2+ can destroy the metabolism balance of the microorganisms and the protein synthesization and genetic information transportation are baffled. When the Cu2+ concentration increase to 50mg/L, more filamentous appears in the granules and the compact granules change to in disperse. The ratios of EPSC/EPN evidently rise to 7.59 and 7.46 respectively under high Cu2+ concentration of 20.0mg/L and 50.0mg/L. It suggests that the microorganisms try to excreting more EPS and protecting itself from the environmental change.

  Info
Periodical
Advanced Materials Research (Volumes 113-116)
Edited by
Zhenyu Du and X.B Sun
Pages
71-75
DOI
10.4028/www.scientific.net/AMR.113-116.71
Citation
X. Y. Zheng, W. Chen, N. W. Zhu, Y. C. Wang, D. Wu, "Effect of Copper (II) on the Characteristics of Aerobic Granules", Advanced Materials Research, Vols. 113-116, pp. 71-75, 2010
Online since
June 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Shuo Du, Zhao Hui Zhang, Yu Feng Zhang, Pei Chao Jian
Environmental Biotechnology
Abstract:Using conventional flocculent activated sludge as seeding sludge, two types of mature aerobic granular sludge were respectively cultivated in...
1075
Authors: Yan Nian Zhou, Jun Li, Jing Li, Su Wei
Abstract:Dewatering characteristics of aerobic granular sludge, activated sludge and sludge which mixed flocculant was studied. It was shown that the...
2944
Authors: Feng Jiang, Yang Li Zhao, Shuai Fu Chen, Rui Liang
Chapter 7: Pollution Control Project (Air, Water, Solid)
Abstract:Aerobic granular sludge (AGS) was cultivated successfully in a sequencing batch reactor (SBR), which has floc sludge as seeding sludge in...
1267
Authors: Xia Zhao, Hao Xu, Bo Yu, Liu Yang, Ling Xiao Li
Chapter 23: Environmental Engineering, Ecological and Environmental Protection
Abstract:The setting time was regarded as the selection pressure to make the particles which were unable to get acclimatized to that cultivation...
2401