Decolouration of H2SO4 leachate from phosphorus-saturated alum sludge using H2O2 and advanced oxidation processes in phosphorus recovery strategy

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Show simple item record Zhao, X.H. Zhao, Y.Q. 2011-08-25T15:42:50Z 2011-08-25T15:42:50Z Taylor & Francis Group, LLC en 2009-11
dc.identifier.citation Journal of Environmental Science and Health, Part A en
dc.identifier.issn 1093-4529 (Print)
dc.identifier.issn 1532-4117 (Online)
dc.description.abstract As a part of attempt for phosphorus (P) recovery from P-saturated alum sludge, which was used as a low-cost P-adsorbent in treatment reed bed for wastewater treatment, decolouration of H2SO4 leachate obtained from previous experiment, possessing a great deal of P, aluminum and red-brown coloured materials (RBCMs), by using H2O2 and advanced oxidation processes (AOPs) was investigated. The use of H2O2 and AOPs in the forms of Fenton (H2O2/Fe2+) and photo-Fenton (UV/H2O2/Fe2+) were tested. The changes in colour and total organic carbon (TOC) were taken place as a result of mineralization of RBCMs. The results revealed that all of these three processes examined were efficient. It was found that about 98 % colour and 47 % TOC can be removed under photo-Fenton treatment after 8 hours of UV irradiation. Correspondingly, the reaction rates of H2O2 and Fenton systems were slow, but 100 % colour and 59 % TOC removal of H2O2 process and 100 % colour and 67 % TOC reductions of Fenton process can be achieved after 72 hours of reaction. The changes of structure and molecular weight/size of RBCMs were also evaluated by HPLC and UV-vis spectroscopic analysis. From the results, some chromophores of RBCMs such as aromatic groups were appeared to be easily degraded to the smaller refractory components. Hence, based on the experimental results and considering the investment and expediency of operation, H2O2 and Fenton oxidation could be suitable technologies for the treatment of the RBCMs derived from P-extraction stage by using H2SO4 leaching. en
dc.description.sponsorship Other funder en
dc.format.extent 574443 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Taylor & Francis en
dc.relation.requires Architecture, Landscape & Civil Engineering Research Collection en
dc.relation.requires Critical Infrastructure Group Research Collection en
dc.relation.requires Urban Institute Ireland Research Collection en
dc.rights This is an electronic version of an article published in Journal of Environmental Science and Health, Part A, 44 (14): 1557-1564, available online at: en
dc.subject Natural organic matter en
dc.subject Peroxide en
dc.subject Advanced oxidation process en
dc.subject Fenton reaction en
dc.subject Colour en
dc.subject Total organic carbon en
dc.subject.lcsh Water treatment plant residuals en
dc.subject.lcsh Phosphorus en
dc.subject.lcsh Fenton's reagent en
dc.subject.lcsh Peroxides en
dc.subject.lcsh Oxidation en
dc.subject.lcsh Organic compounds--Biodegradation en
dc.subject.lcsh Leachate en
dc.title Decolouration of H2SO4 leachate from phosphorus-saturated alum sludge using H2O2 and advanced oxidation processes in phosphorus recovery strategy en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions en
dc.status Peer reviewed en
dc.identifier.volume 44 en
dc.identifier.issue 14 en
dc.identifier.startpage 1557 en
dc.identifier.endpage 1564 en
dc.identifier.doi 10.1080/10934520903263504
dc.neeo.contributor Zhao|X.H.|aut| en
dc.neeo.contributor Zhao|Y.Q.|aut| en
dc.description.othersponsorship Environmental Protection Agency en

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