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Article: Degradation of phenol and p-cresol in reactors

TitleDegradation of phenol and p-cresol in reactors
Authors
KeywordsAnaerobic
Bioactivity
P-Cresol
Phenol
UASB
Wastewater
Issue Date2000
PublisherIWA Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst
Citation
Water Science and Technology, 2000, v. 42 n. 5-6, p. 237-244 How to Cite?
AbstractThe effects of hydraulic retention time (HRT) and phenol concentration on the degradation of phenol and p-cresol in wastewater were investigated in two respective UASB (upflow anaerobic sludge blanket) reactors with effluent recirculation at 37 °C for over 440 days. After acclimation, nearly all the phenol and p-cresol at moderate concentrations could be degraded without carbohydrate as a co-substrate. Treating a wastewater containing 800 mg/l of phenol and 300 mg/l of p-cresol at HRT ranging 2-12 hours, the first reactor consistently removed 95% of phenol, 65% of p-cresol and 85% of COD at 8-12 hours of HRT; the efficiency, however, decreased at lower HRT. Treating wastewater containing a constant p-cresol concentration of 400 mg/l at 24 hours of HRT, the second reactor was able to remove 75-80% of COD when the phenol was 1200 and 1500 mg/l; the removal efficiency decreased as phenol concentration further increased. High levels of residual phenol and p-cresol in the effluent suppressed the activity of biogranules. The suppression of bioactivity was not permanent. Biomass was able to regain its activity fully after lowering the phenolic concentrations in the wastewater. | The effects of hydraulic retention time (HRT) and concentration on the degradation of phenol and p-cresol in wastewater were investigated in two respective UASB (upflow anaerobic sludge blanket) reactors with effluent recirculation at 37 °C for over 440 days. After acclimation, nearly all the phenol and p-cresol at moderate concentrations could be degraded without carbohydrate as a co-substrate. Treating a wastewater containing 800 mg/l of phenol and 300 mg/l of p-cresol at HRT ranging 2-12 hours, the first reactor consistently removed 95% of phenol, 65% of p-cresol and 85% of COD at 8-12 hours of HRT; the efficiency, however, decreased at lower HRT. Treating wastewater containing a constant p-cresol concentration of 400 mg/l at 24 hours of HRT, the second reactor was able to remove 75-80% of COD when the phenol was 1200 and 1500 mg/l; the removal efficiency decreased as phenol concentration further increased. High levels of residual phenol and p-cresol in the effluent suppressed the activity of biogranules. The suppression of bioactivity was not permanent. Biomass was able to regain its activity fully after lowering the phenolic concentrations in the wastewater.
Persistent Identifierhttp://hdl.handle.net/10722/150146
ISSN
2015 Impact Factor: 1.064
2015 SCImago Journal Rankings: 0.469
References

 

DC FieldValueLanguage
dc.contributor.authorFang, HHPen_US
dc.contributor.authorZhou, GMen_US
dc.date.accessioned2012-06-26T06:01:50Z-
dc.date.available2012-06-26T06:01:50Z-
dc.date.issued2000en_US
dc.identifier.citationWater Science and Technology, 2000, v. 42 n. 5-6, p. 237-244en_US
dc.identifier.issn0273-1223en_US
dc.identifier.urihttp://hdl.handle.net/10722/150146-
dc.description.abstractThe effects of hydraulic retention time (HRT) and phenol concentration on the degradation of phenol and p-cresol in wastewater were investigated in two respective UASB (upflow anaerobic sludge blanket) reactors with effluent recirculation at 37 °C for over 440 days. After acclimation, nearly all the phenol and p-cresol at moderate concentrations could be degraded without carbohydrate as a co-substrate. Treating a wastewater containing 800 mg/l of phenol and 300 mg/l of p-cresol at HRT ranging 2-12 hours, the first reactor consistently removed 95% of phenol, 65% of p-cresol and 85% of COD at 8-12 hours of HRT; the efficiency, however, decreased at lower HRT. Treating wastewater containing a constant p-cresol concentration of 400 mg/l at 24 hours of HRT, the second reactor was able to remove 75-80% of COD when the phenol was 1200 and 1500 mg/l; the removal efficiency decreased as phenol concentration further increased. High levels of residual phenol and p-cresol in the effluent suppressed the activity of biogranules. The suppression of bioactivity was not permanent. Biomass was able to regain its activity fully after lowering the phenolic concentrations in the wastewater. | The effects of hydraulic retention time (HRT) and concentration on the degradation of phenol and p-cresol in wastewater were investigated in two respective UASB (upflow anaerobic sludge blanket) reactors with effluent recirculation at 37 °C for over 440 days. After acclimation, nearly all the phenol and p-cresol at moderate concentrations could be degraded without carbohydrate as a co-substrate. Treating a wastewater containing 800 mg/l of phenol and 300 mg/l of p-cresol at HRT ranging 2-12 hours, the first reactor consistently removed 95% of phenol, 65% of p-cresol and 85% of COD at 8-12 hours of HRT; the efficiency, however, decreased at lower HRT. Treating wastewater containing a constant p-cresol concentration of 400 mg/l at 24 hours of HRT, the second reactor was able to remove 75-80% of COD when the phenol was 1200 and 1500 mg/l; the removal efficiency decreased as phenol concentration further increased. High levels of residual phenol and p-cresol in the effluent suppressed the activity of biogranules. The suppression of bioactivity was not permanent. Biomass was able to regain its activity fully after lowering the phenolic concentrations in the wastewater.en_US
dc.languageengen_US
dc.publisherIWA Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwsten_US
dc.relation.ispartofWater Science and Technologyen_US
dc.subjectAnaerobicen_US
dc.subjectBioactivityen_US
dc.subjectP-Cresolen_US
dc.subjectPhenolen_US
dc.subjectUASBen_US
dc.subjectWastewateren_US
dc.titleDegradation of phenol and p-cresol in reactorsen_US
dc.typeArticleen_US
dc.identifier.emailFang, HH: hrechef@hkucc.hku.hken_US
dc.identifier.authorityFang, HH=rp00115en_US
dc.description.naturelink_to_OA_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0033792433en_US
dc.identifier.hkuros60225-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033792433&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume42en_US
dc.identifier.issue5-6en_US
dc.identifier.spage237en_US
dc.identifier.epage244en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridFang, HH=7402542625en_US
dc.identifier.scopusauthoridZhou, GM=7403686274en_US

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