Hydrothermal liquefaction of biogenic municipal solid waste under reduced H2 atmosphere in biorefinery format. (August 2020)

• Record Type: Journal Article
• Authors: Katakojwala, Ranaprathap; Kopperi, Harishankar; Kumar, Sunil; Venkata Mohan, S.
• Is Part Of: Bioresource technology. Volume 310(2020)
• Publication Date: 2020-08
• Subjects: Biocrude -- Sub-critical temperature -- Hydrogenolysis -- Bioeconomy -- Food waste; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2020.123369
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Feasibility of Biogenic MSW as potential feedstock for Hydrothermal liquefaction. HTL employed for biocrude production and served as an alternate to fossil fuels. Reducing atmosphere provided by H2 gas resulted in higher biocrude yield. The present study supports biorefinery format with zero waste streams. Abstract: Municipal solid waste (MSW), an inexorable by-product of anthropogenic activities composes of nearly 50% of the organic (biogenic) fraction. Hydrothermal liquefaction (HTL) was studied to facilitate thermal depolymerization of organic fraction of MSW to biocrude at sub-critical region of water (200 °C; 100 bar pressure) employing H2 induced reducing conditions. Food, vegetable, and composite wastes were evaluated as feedstocks to produce HTL derivatives in the form of liquor (biocrude and aqueous phase), biochar and bio-gas. The biocrude (HTLOF ) showed middle oil as major fraction along with C6 -C22 compounds. Composite waste resulted in relatively higher yield of biocrude fraction. The aqueous phase (HTLAF ) documented the presence of reducing sugars, sotolon and furfurals as major fraction. Biochar (HTLBC ) composition showed maximum carbon fraction followed by hydrogen and oxygen. H2 induced reduced condition facilitated conversion of the biogenic MSW at relatively lower input conditions to various biobased fractions cohesively addressing the basic biorefinery requirement.