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Influence of sludge retention time on tolerance of copper toxicity for polyphosphate accumulating organisms linked to polyhydroxyalkanoates metabolism and phosphate removal

Tsai, Yung-Pin and Chen, Hsiu-Ting (2011) Influence of sludge retention time on tolerance of copper toxicity for polyphosphate accumulating organisms linked to polyhydroxyalkanoates metabolism and phosphate removal. Bioresource Technology , 102 (23). pp. 11043-11047. ISSN 0960-8524. https://resolver.caltech.edu/CaltechAUTHORS:20120105-133347622

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Abstract

This study explored the influence of sludge retention time (SRT) on tolerance of copper invasion for polyphosphate accumulating organisms (PAOs) in an enhanced biological phosphorus removal (EBPR). The experimental data showed the anaerobic polyhydroxyalkanoates (PHA) storage for the sludge at 10d SRT was less influenced by copper invasion than those at 5d and 15d SRTs. The reaction of PAOs aerobically taking up phosphate for the sludge at 5d or 15d SRT almost ceased at 2 mg Cu L^(−1), whereas PAOs in the sludge at 10d SRT retained half of the ability to take up phosphate. Both the PHAs degradation and synthesis rates decreased with increasing copper concentration, regardless of the SRTs. However, the copper inhibition of the former was greater than that of the later.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.biortech.2011.09.050 DOIUNSPECIFIED
http://www.sciencedirect.com/science/article/pii/S0960852411013368PublisherUNSPECIFIED
Additional Information:© 2011 Elsevier Ltd. Received 17 June 2011; revised 7 September 2011; Accepted 13 September 2011. Available online 21 September 2011. This study was supported by Grants received from the National Science Council, Taiwan, Republic of China (NSC 99-2918-I-260-001 and NSC 100-2221-E-260-002-MY3).
Funders:
Funding AgencyGrant Number
National Science Council (Taiwan)NSC 99-2918-I-260-001
National Science Council (Taiwan)NSC 100-2221-E-260-002-MY3
Subject Keywords:Polyhydroxyalkanoates (PHA); Heavy metal; Phosphorus accumulating organisms; Sludge retention time
Issue or Number:23
Record Number:CaltechAUTHORS:20120105-133347622
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120105-133347622
Official Citation:Yung-Pin Tsai, Hsiu-Ting Chen, Influence of sludge retention time on tolerance of copper toxicity for polyphosphate accumulating organisms linked to polyhydroxyalkanoates metabolism and phosphate removal, Bioresource Technology, Volume 102, Issue 23, December 2011, Pages 11043-11047, ISSN 0960-8524, 10.1016/j.biortech.2011.09.050.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:28678
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:06 Jan 2012 16:51
Last Modified:03 Oct 2019 03:34

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