| Title | 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 |
|---|---|
| ID_Doc | 17237 |
| Authors | Sadhukhan, J; Ng, KS; Martinez-Hernandez, E |
| Title | 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 |
| Year | 2016 |
| Published | |
| 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 5 wt%) 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 2 wt% dilute H2SO4 catalyst producing LA, furfural, formic acid (FA), via C-5/C-6 sugar extraction, in plug flow (210-230 degrees C, 25 bar, 12 s) and continuous stirred tank (195-215 degrees C, 14 bar, 20 min) 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 (6.4 MWh/t), RDF (5.4 MWh/t), char (4.5 MWh/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%). (C) 2016 Elsevier Ltd. All rights reserved. |
| http://opus.bath.ac.uk/51474/1/integrated_mechanical_biological_chemical_treatment_systems_for_the_production_of_levulinic_acid_from_municipal_solid_waste_ACCEPTED.docx |
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