Removal of heavy metals from sewage sludge by acid treatment

Naoum, C; Fatta, D; Haralambous, KJ; Loizidou, M

dc.contributor.author	Naoum, C	en
dc.contributor.author	Fatta, D	en
dc.contributor.author	Haralambous, KJ	en
dc.contributor.author	Loizidou, M	en
dc.date.accessioned	2014-03-01T01:17:01Z
dc.date.available	2014-03-01T01:17:01Z
dc.date.issued	2001	en
dc.identifier.issn	1093-4529	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14327
dc.subject	Acid treatment	en
dc.subject	Anaerobically digested sludge	en
dc.subject	Heavy metals distribution	en
dc.subject	Heavy metals extraction	en
dc.subject	Sequential chemical extraction	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	Acidization	en
dc.subject.other	Environmental impact	en
dc.subject.other	Heavy metals	en
dc.subject.other	Inorganic acids	en
dc.subject.other	Leachate treatment	en
dc.subject.other	Sewage sludge	en
dc.subject.other	Residues	en
dc.subject.other	Environmental engineering	en
dc.subject.other	chromium	en
dc.subject.other	copper	en
dc.subject.other	heavy metal	en
dc.subject.other	lead	en
dc.subject.other	nickel	en
dc.subject.other	zinc	en
dc.subject.other	acidification	en
dc.subject.other	article	en
dc.subject.other	chemical analysis	en
dc.subject.other	environmental impact assessment	en
dc.subject.other	extraction	en
dc.subject.other	industrial waste	en
dc.subject.other	landfill	en
dc.subject.other	residue analysis	en
dc.subject.other	sampling	en
dc.subject.other	sludge digestion	en
dc.subject.other	sludge disposal	en
dc.subject.other	turbidimetry	en
dc.subject.other	waste water management	en
dc.subject.other	Acids	en
dc.subject.other	Environmental Pollution	en
dc.subject.other	Kinetics	en
dc.subject.other	Metals, Heavy	en
dc.subject.other	Refuse Disposal	en
dc.subject.other	Sewage	en
dc.subject.other	Sulfuric Acids	en
dc.title	Removal of heavy metals from sewage sludge by acid treatment	en
heal.type	journalArticle	en
heal.identifier.primary	10.1081/ESE-100103767	en
heal.identifier.secondary	http://dx.doi.org/10.1081/ESE-100103767	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	Sludge samples were found to contain significant amounts of heavy metals (Cr, Cu, Ni, Pb and Zn) and were subjected to acid treatment using either hydrochloric, sulfuric, nitric or phosphoric acid. The optimum combination, in terms of metal removal efficiency and environmental impacts was sought through a variety of tests by applying a ratio of 1:5 of sludge quantity (g) per volume of acid (ml). The concentrations of the different acids used, were in the range of 5%-20% and the contact times ranged between 15 and 60 minutes. The optimum combination was achieved when the sludge samples were in contact with H2SO4 20%v/v for 60 minutes. In order to estimate the metal leachability, the heavy metal content as well as the metal distribution in the residue were investigated and it was found that most of the heavy metal content was extracted while the remaining was removed from the initial mobile phases to the more stable ones.	en
heal.publisher	MARCEL DEKKER INC	en
heal.journalName	Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering	en
dc.identifier.doi	10.1081/ESE-100103767	en
dc.identifier.isi	ISI:000170024400020	en
dc.identifier.volume	36	en
dc.identifier.issue	5	en
dc.identifier.spage	873	en
dc.identifier.epage	881	en