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Novel integrated mechanical biological chemical treatment (MBCT) systems for the production of levulinic acid from fraction of municipal solid waste: A comprehensive techno-economic analysis.

Sadhukhan, J, Ng, SK and Martinez-Hernandez, E (2016) Novel integrated mechanical biological chemical treatment (MBCT) systems for the production of levulinic acid from fraction of municipal solid waste: A comprehensive techno-economic analysis. BIORESOURCE TECHNOLOGY, 215. pp. 131-143.

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Abstract

This paper, for the first time, reports integrated conceptual MBCT/biorefinery systems for unlocking the value of organics in municipal solid waste (MSW) through the production of levulinic acid (LA by 5wt%) that increases the economic margin by 110-150%. After mechanical separation recovering recyclables, metals (iron, aluminium, copper) and refuse derived fuel (RDF), lignocelluloses from remaining MSW are extracted by supercritical-water for chemical valorisation, comprising hydrolysis in 2wt% dilute H2SO4 catalyst producing LA, furfural, formic acid (FA), via C5/C6 sugar extraction, in plug flow (210−230°C, 25bar, 12s) and continuous stirred tank (195−215°C, 14bar, 20mins) reactors; char separation and LA extraction/purification by methyl isobutyl ketone solvent; acid/solvent and by-product recovery. The by-product and pulping effluents are anaerobically digested into biogas and fertiliser. Produced biogas(6.4MWh/t), RDF(5.4MWh/t), char(4.5MWh/t) are combusted, heat recovered into steam generation in boiler (efficiency:80%); on-site heat/steam demand is met; balance of steam is expanded into electricity in steam turbines (efficiency:35%).

Item Type: Article
Subjects : subj_Environment
Divisions : Faculty of Engineering and Physical Sciences > Centre for Environmental Strategy
Authors :
AuthorsEmailORCID
Sadhukhan, JUNSPECIFIEDUNSPECIFIED
Ng, SKUNSPECIFIEDUNSPECIFIED
Martinez-Hernandez, EUNSPECIFIEDUNSPECIFIED
Date : 1 June 2016
Identification Number : 10.1016/j.biortech.2016.04.030
Copyright Disclaimer : © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Depositing User : Symplectic Elements
Date Deposited : 08 Apr 2016 09:37
Last Modified : 19 Jul 2016 13:16
URI: http://epubs.surrey.ac.uk/id/eprint/810380

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