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Article: Toxicity of phenol towards anaerobic biogranules

TitleToxicity of phenol towards anaerobic biogranules
Authors
KeywordsAnaerobic
Biogranule
Inhibition
Methanogenic activity
Phenol
Shock
SMA
Toxicity
UASB
Issue Date1997
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres
Citation
Water Research, 1997, v. 31 n. 9, p. 2229-2242 How to Cite?
AbstractToxity of phenol towards upflow anaerobic sludge blanket (UASB) biogranules treating wastewater containing different substrates was investigated. Under shock-loading conditions, the specific methanogenic activity (SMA) of the biogranules decreased with the increase of phenol concentration. The C1.50 (i.e. the concentration at which bioactivity was 50% of the control) was 1750, 1000 and 1700 mg-phenol litre-1 for acetate-, propionate- and benzoate-degrading biogranules, respectively. Under continuous-loading conditions, however, phenol toxicity was not progressive. Instead, phenol had a threshold toxicity level for each type of biogranules: 1050-1600, > 850 and 1100-1700 mg litre-1 for benzoate-, propionate- and acetate-degrading biogranules, respectively. Below these threshold levels, phenol was not inhibitive to the activity of biogranules; but above them, the inhibition was nearly 100%. Phenol toxicity was neither cumulative nor permanent. Once the phenol concentration in wastewater was lowered to levels below the threshold, biogranules were able to gradually regain 100% of their activity. Lowering substrate concentration expedited the recovering process. | Toxity of phenol towards upflow anaerobic sludge blanket (UASB) biogranules treating wastewater containing different substrates was investigated. Under shock-loading conditions, the specific methanogenic activity (SMA) of the biogranules decreased with the increase of phenol concentration. The C1.50 (i.e. the concentration at which bioactivity was 50% of the control) was 1750, 1000 and 1700 mg-phenol litre-1 for acetate-, propionate- and benzoate-degrading biogranules, respectively. Under continuous-loading conditions, however, phenol toxicity was not progressive. Instead, phenol had a threshold toxicity level for each type of biogranules: 1050-1600, >850 and 1100-1700 mg litre-1 for benzoate-, propionate- and acetate-degrading biogranules, respectively. Below these threshold levels, phenol was not inhibitive to the activity of biogranules; but above them, the inhibition was nearly 100%. Phenol toxicity was neither cumulative nor permanent. Once the phenol concentration in wastewater was lowered to levels below the threshold, biogranules were able to gradually regain 100% of their activity. Lowering substrate concentration expedited the recovering process.
Persistent Identifierhttp://hdl.handle.net/10722/71076
ISSN
2015 Impact Factor: 5.991
2015 SCImago Journal Rankings: 2.772
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorFang, HHPen_HK
dc.contributor.authorChan, OCen_HK
dc.date.accessioned2010-09-06T06:28:42Z-
dc.date.available2010-09-06T06:28:42Z-
dc.date.issued1997en_HK
dc.identifier.citationWater Research, 1997, v. 31 n. 9, p. 2229-2242en_HK
dc.identifier.issn0043-1354en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71076-
dc.description.abstractToxity of phenol towards upflow anaerobic sludge blanket (UASB) biogranules treating wastewater containing different substrates was investigated. Under shock-loading conditions, the specific methanogenic activity (SMA) of the biogranules decreased with the increase of phenol concentration. The C1.50 (i.e. the concentration at which bioactivity was 50% of the control) was 1750, 1000 and 1700 mg-phenol litre-1 for acetate-, propionate- and benzoate-degrading biogranules, respectively. Under continuous-loading conditions, however, phenol toxicity was not progressive. Instead, phenol had a threshold toxicity level for each type of biogranules: 1050-1600, > 850 and 1100-1700 mg litre-1 for benzoate-, propionate- and acetate-degrading biogranules, respectively. Below these threshold levels, phenol was not inhibitive to the activity of biogranules; but above them, the inhibition was nearly 100%. Phenol toxicity was neither cumulative nor permanent. Once the phenol concentration in wastewater was lowered to levels below the threshold, biogranules were able to gradually regain 100% of their activity. Lowering substrate concentration expedited the recovering process. | Toxity of phenol towards upflow anaerobic sludge blanket (UASB) biogranules treating wastewater containing different substrates was investigated. Under shock-loading conditions, the specific methanogenic activity (SMA) of the biogranules decreased with the increase of phenol concentration. The C1.50 (i.e. the concentration at which bioactivity was 50% of the control) was 1750, 1000 and 1700 mg-phenol litre-1 for acetate-, propionate- and benzoate-degrading biogranules, respectively. Under continuous-loading conditions, however, phenol toxicity was not progressive. Instead, phenol had a threshold toxicity level for each type of biogranules: 1050-1600, >850 and 1100-1700 mg litre-1 for benzoate-, propionate- and acetate-degrading biogranules, respectively. Below these threshold levels, phenol was not inhibitive to the activity of biogranules; but above them, the inhibition was nearly 100%. Phenol toxicity was neither cumulative nor permanent. Once the phenol concentration in wastewater was lowered to levels below the threshold, biogranules were able to gradually regain 100% of their activity. Lowering substrate concentration expedited the recovering process.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watresen_HK
dc.relation.ispartofWater Researchen_HK
dc.subjectAnaerobicen_HK
dc.subjectBiogranuleen_HK
dc.subjectInhibitionen_HK
dc.subjectMethanogenic activityen_HK
dc.subjectPhenolen_HK
dc.subjectShocken_HK
dc.subjectSMAen_HK
dc.subjectToxicityen_HK
dc.subjectUASBen_HK
dc.titleToxicity of phenol towards anaerobic biogranulesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0043-1354&volume=31&issue=9&spage=2229 &epage= 2242&date=1997&atitle=Toxicity+of+phenol+towards+anaerobic+biogranulesen_HK
dc.identifier.emailFang, HHP:hrechef@hkucc.hku.hken_HK
dc.identifier.authorityFang, HHP=rp00115en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0043-1354(97)00069-9en_HK
dc.identifier.scopuseid_2-s2.0-0031238545en_HK
dc.identifier.hkuros26842en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0031238545&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume31en_HK
dc.identifier.issue9en_HK
dc.identifier.spage2229en_HK
dc.identifier.epage2242en_HK
dc.identifier.isiWOS:A1997XQ41300011-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridFang, HHP=7402542625en_HK
dc.identifier.scopusauthoridChan, OC=7004275779en_HK

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