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Phthalate hydrolysis under landfill conditions
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
Water Problems Institute Russian Academy of Science.
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
2005 (English)In: Anaerobic Digestion of Solis Waste,2005, 2005Conference paper, Published paper (Other academic)
Abstract [en]

Experimental data from a study using landfill simulation reactor were used to develop and calibrate a one-dimensional distributed model of co-digestion of municipal solid waste and three phthalic acid diesters with different water solubilities to their corresponding monoesters. The three diesters were diethyl phthalate (DEP), dibutyl phthalate (DBP), and di-2-ethylhexyl phthalate (DEHP). Two types of municipal solid wastes were assumed, easily degradable and recalcitrant. The model considered inhibition of hydrolysis of the recalcitrant fraction and phthalic acid esters, and also methanogenesis at acidic pH. The results indicated that the prolonged steady-state concentrations of the diesters in the leachates could be explained by equilibrium between physicochemical desorption and sorption processes giving desorption/sorption ratios of 0.26, 0.003, and 9∙10-5 for DEP, DBP, and DEHP, respectively. When methanogenic conditions were induced in the acidogenic landfill simulation reactor, both the inhibition of hydrolysis of recalcitrant MSW and biodegradation of phthalic acid esters ceased

Place, publisher, year, edition, pages
2005.
Keyword [en]
Phthalates; biodegradation; DEP; DBP; DEHP; landfill; modeling
National Category
Social Sciences Interdisciplinary
Identifiers
URN: urn:nbn:se:liu:diva-31963Local ID: 17801OAI: oai:DiVA.org:liu-31963DiVA: diva2:252786
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2012-08-22Bibliographically approved

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Jonsson, SusanneSvensson, Bo

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