Estimation of the components of municipal solid waste settlement

Babu, Sivakumar GL and Lakshmikanthan, P (2015) Estimation of the components of municipal solid waste settlement. In: WASTE MANAGEMENT & RESEARCH, 33 (1). pp. 30-38.

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Abstract

Estimation of the municipal solid waste settlements and the contribution of each of the components are essential in the estimation of the volume of the waste that can be accommodated in a landfill and increase the post-usage of the landfill. This article describes an experimental methodology for estimating and separating primary settlement, settlement owing to creep and biodegradation-induced settlement. The primary settlement and secondary settlement have been estimated and separated based on 100% pore pressure dissipation time and the coefficient of consolidation. Mechanical creep and biodegradation settlements were estimated and separated based on the observed time required for landfill gas production. The results of a series of laboratory triaxial tests, creep tests and anaerobic reactor cell setups were conducted to describe the components of settlement. All the tests were conducted on municipal solid waste (compost reject) samples. It was observed that biodegradation accounted to more than 40% of the total settlement, whereas mechanical creep contributed more than 20% towards the total settlement. The essential model parameters, such as the compression ratio (C-c'), rate of mechanical creep (c), coefficient of mechanical creep (b), rate of biodegradation (d) and the total strain owing to biodegradation (E-DG), are useful parameters in the estimation of total settlements as well as components of settlement in landfill.

Item Type:	Journal Article
Publication:	WASTE MANAGEMENT & RESEARCH
Publisher:	SAGE PUBLICATIONS LTD
Additional Information:	Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Keywords:	Municipal solid waste; primary settlement; mechanical creep; biodegradation induced settlement
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	21 Apr 2015 07:22
Last Modified:	21 Apr 2015 07:22
URI:	http://eprints.iisc.ac.in/id/eprint/51330

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