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Publikācija: Bio-oil from Thermo-Chemical Hydro-Liquefaction of Wet Sewage Sludge

Publication Type Scientific article indexed in SCOPUS or WOS database
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Bio-oil from Thermo-Chemical Hydro-Liquefaction of Wet Sewage Sludge
Field of research 1. Natural sciences
Sub-field of research 1.4 Chemical sciences
Authors Kristaps Māliņs
Valdis Kampars
Jānis Brinks
Ilze Māliņa
Raimonds Mūrnieks
Rūta Kampare
Keywords Bio-oil | Sewage sludge | Thermo-chemical hydro-liquefaction | Transition metal catalysts
Abstract The present work demonstrates the influence of experimental conditions such as weight ratio of sewage sludge to water (1/0-1/15), reaction temperature (200-350°C), initial H<inf>2</inf> pressure (2.0-11.0MPa), residence time (10-100min) and type of catalysts (Na<inf>2</inf>CO<inf>3</inf>, Raney nickel, FeSO<inf>4</inf>, MoS<inf>2</inf>) on hydro-liquefaction process of sewage sludge. High amount of water improves the hydro-liquefaction process of sewage sludge by increasing the yield of bio-oil and the total conversion. The highest yield of bio-oil (47.79 wt.%) from sewage sludge was obtained with initial H<inf>2</inf> pressure 5.0MPa, reaction temperature 300°C, and residence time 40min. Under these experimental conditions, using weight ratio of sewage sludge to water 1/5, catalyst (FeSO<inf>4</inf>) - 5 wt.% of dry SS, mixing speed 350rpm the obtained bio-oil had the highest energy recovery (69.84%), total conversion (70.64%) and its calorific value was 35.22MJ/kg.
DOI: 10.1016/j.biortech.2015.03.093
Hyperlink: http://www.sciencedirect.com/science/article/pii/S0960852415004253 
Reference Māliņs, K., Kampars, V., Brinks, J., Māliņa, I., Mūrnieks, R., Kampare, R. Bio-oil from Thermo-Chemical Hydro-Liquefaction of Wet Sewage Sludge. Bioresource Technology, 2015, Vol.187, pp.23-29. ISSN 0960-8524. e-ISSN 1873-2976. Available from: doi:10.1016/j.biortech.2015.03.093
Additional information Citation count:
ID 22534