Thermal-alkaline solubilization of waste activated sludge as a pre-treatment stage for anaerobic digestion

Vlyssides, AG; Karlis, PK

dc.contributor.author	Vlyssides, AG	en
dc.contributor.author	Karlis, PK	en
dc.date.accessioned	2014-03-01T01:21:38Z
dc.date.available	2014-03-01T01:21:38Z
dc.date.issued	2004	en
dc.identifier.issn	0960-8524	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16287
dc.subject	Alkaline	en
dc.subject	Hydrolysis	en
dc.subject	Lime	en
dc.subject	Pretreatment	en
dc.subject	Solubilization	en
dc.subject	Thermal	en
dc.subject	Waste activated sludge	en
dc.subject.classification	Agricultural Engineering	en
dc.subject.classification	Biotechnology & Applied Microbiology	en
dc.subject.classification	Energy & Fuels	en
dc.subject.other	Alkalinity	en
dc.subject.other	Anaerobic digestion	en
dc.subject.other	Hydrolysis	en
dc.subject.other	Methane	en
dc.subject.other	pH	en
dc.subject.other	Reaction kinetics	en
dc.subject.other	Solubility	en
dc.subject.other	Temperature	en
dc.subject.other	Volatile suspended solids (VSS)	en
dc.subject.other	Activated sludge process	en
dc.subject.other	calcium oxide	en
dc.subject.other	methane	en
dc.subject.other	volatile agent	en
dc.subject.other	activated sludge	en
dc.subject.other	kinetics	en
dc.subject.other	wastewater treatment	en
dc.subject.other	alkalinity	en
dc.subject.other	anaerobic metabolism	en
dc.subject.other	apparatus	en
dc.subject.other	article	en
dc.subject.other	correlation analysis	en
dc.subject.other	experiment	en
dc.subject.other	hydrolysis kinetics	en
dc.subject.other	methodology	en
dc.subject.other	pH	en
dc.subject.other	priority journal	en
dc.subject.other	sludge	en
dc.subject.other	solubilization	en
dc.subject.other	statistical analysis	en
dc.subject.other	suspended particulate matter	en
dc.subject.other	temperature	en
dc.subject.other	thermal analysis	en
dc.subject.other	velocity	en
dc.subject.other	waste activated sludge	en
dc.subject.other	Anaerobiosis	en
dc.subject.other	Biodegradation, Environmental	en
dc.subject.other	Greece	en
dc.subject.other	Hydrogen-Ion Concentration	en
dc.subject.other	Hydrolysis	en
dc.subject.other	Kinetics	en
dc.subject.other	Methane	en
dc.subject.other	Oxygen	en
dc.subject.other	Sewage	en
dc.subject.other	Solubility	en
dc.subject.other	Temperature	en
dc.title	Thermal-alkaline solubilization of waste activated sludge as a pre-treatment stage for anaerobic digestion	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0960-8524(03)00176-7	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0960-8524(03)00176-7	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	This work studied the hydrolysis kinetics and the solubilization of waste activated sludge under a medium range temperature (50-90 degreesC) and pH in the alkaline region (8-11), as a pretreatment stage for anaerobic digestion. The hydrolysis rate for the solubilization of volatile suspended solids (VSS) followed a first-order rate. A linear polynomial hydrolysis model was derived from the experimental results leading to a satisfactory correlation between the hydrolysis rate coefficient, pH, and temperature. At pH 11 and a temperature of 90 degreesC the concentration of the VSS was 6.82%, the VSS reduction reached 45% within ten hours and at the same time the soluble COD was 70.000 mg/l and the total efficiency for methane production 0.28 l of CH4 per g of VSS loading. (C) 2003 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Bioresource Technology	en
dc.identifier.doi	10.1016/S0960-8524(03)00176-7	en
dc.identifier.isi	ISI:000188394600014	en
dc.identifier.volume	91	en
dc.identifier.issue	2	en
dc.identifier.spage	201	en
dc.identifier.epage	206	en