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Article: Chemical-vapor-deposited copper on acid-activated bentonite clay as an applicable heterogeneous catalyst for the photo-fenton-like oxidation of textile organic pollutants

TitleChemical-vapor-deposited copper on acid-activated bentonite clay as an applicable heterogeneous catalyst for the photo-fenton-like oxidation of textile organic pollutants
Authors
KeywordsAcids
Chemical Activation
Chemical Vapor Deposition
Clay
Leaching
Organic Compounds
Oxidation
Textiles
Issue Date2005
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/iecr
Citation
Industrial And Engineering Chemistry Research, 2005, v. 44 n. 21, p. 7983-7990 How to Cite?
AbstractA heterogeneous Cu/clay catalyst was synthesized by dispersing copper onto the surface of bentonite clay through chemical vapor deposition (CVD). To resolve the copper leaching problem during the catalyst's application in aqueous reaction, a critical pretreatment step, acid activation by H2SO 4, was applied to the original bentonite clay. Such manufactured Cu/clay catalyst was characterized and evaluated in the photo-Fenton-like degradation of an azo organic dye, Acid Black l (AB1). It was found that the acid activation process of clay could significantly reduce the leaching problem by almost 72% and improve the catalytic activity. These improvements came from the active site and the addition of sulfonate functional group on the clay surface. It was also observed that the adsorption and desorption properties of the Cu/acid-activated clay play an important role in the catalytic reaction and that its catalytic performance is better than Fe/clay at pH 7 and 9. It also has a comparable activity to that of Fe/clay at pH 3. This advantage increases the potential of the catalyst in the treatment of organic contaminated wastewater. The optimum reaction conditions in a 1-L reactor equipped with 8 W UVC light were determined to be 0.1 mM AB1, 6.4 mM H2O2, 0.5 g/L catalyst loading, pH 3, at ambient temperature of 30°C. It was also found that splitting the required dosage of H2O2 could minimize the H2O2 scavenging effect and results in a higher total organic carbon (TOC) removal. © 2005 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/132388
ISSN
2015 Impact Factor: 2.567
2015 SCImago Journal Rankings: 0.976
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYip, ACKen_HK
dc.contributor.authorLam, FLYen_HK
dc.contributor.authorHu, Xen_HK
dc.date.accessioned2011-03-28T09:23:55Z-
dc.date.available2011-03-28T09:23:55Z-
dc.date.issued2005en_HK
dc.identifier.citationIndustrial And Engineering Chemistry Research, 2005, v. 44 n. 21, p. 7983-7990en_HK
dc.identifier.issn0888-5885en_HK
dc.identifier.urihttp://hdl.handle.net/10722/132388-
dc.description.abstractA heterogeneous Cu/clay catalyst was synthesized by dispersing copper onto the surface of bentonite clay through chemical vapor deposition (CVD). To resolve the copper leaching problem during the catalyst's application in aqueous reaction, a critical pretreatment step, acid activation by H2SO 4, was applied to the original bentonite clay. Such manufactured Cu/clay catalyst was characterized and evaluated in the photo-Fenton-like degradation of an azo organic dye, Acid Black l (AB1). It was found that the acid activation process of clay could significantly reduce the leaching problem by almost 72% and improve the catalytic activity. These improvements came from the active site and the addition of sulfonate functional group on the clay surface. It was also observed that the adsorption and desorption properties of the Cu/acid-activated clay play an important role in the catalytic reaction and that its catalytic performance is better than Fe/clay at pH 7 and 9. It also has a comparable activity to that of Fe/clay at pH 3. This advantage increases the potential of the catalyst in the treatment of organic contaminated wastewater. The optimum reaction conditions in a 1-L reactor equipped with 8 W UVC light were determined to be 0.1 mM AB1, 6.4 mM H2O2, 0.5 g/L catalyst loading, pH 3, at ambient temperature of 30°C. It was also found that splitting the required dosage of H2O2 could minimize the H2O2 scavenging effect and results in a higher total organic carbon (TOC) removal. © 2005 American Chemical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/iecren_HK
dc.relation.ispartofIndustrial and Engineering Chemistry Researchen_HK
dc.subjectAcidsen_US
dc.subjectChemical Activationen_US
dc.subjectChemical Vapor Depositionen_US
dc.subjectClayen_US
dc.subjectLeachingen_US
dc.subjectOrganic Compoundsen_US
dc.subjectOxidationen_US
dc.subjectTextilesen_US
dc.titleChemical-vapor-deposited copper on acid-activated bentonite clay as an applicable heterogeneous catalyst for the photo-fenton-like oxidation of textile organic pollutantsen_HK
dc.typeArticleen_HK
dc.identifier.emailLam, FLY:kefrank@hku.hken_HK
dc.identifier.authorityLam, FLY=rp01470en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/ie050647yen_HK
dc.identifier.scopuseid_2-s2.0-27444443986en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-27444443986&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume44en_HK
dc.identifier.issue21en_HK
dc.identifier.spage7983en_HK
dc.identifier.epage7990en_HK
dc.identifier.isiWOS:000232410400010-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridYip, ACK=8956194800en_HK
dc.identifier.scopusauthoridLam, FLY=7102075931en_HK
dc.identifier.scopusauthoridHu, X=7404709975en_HK

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