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Supercritical fluids as a green technology for the pretreatment of lignocellulosic biomass

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2016Publisher:Elsevier BVJournal:Bioresource Technology, volume 199, pages 113-120 (issn: 0960-8524,

Authors: C.E. Orrego Alzate; L. V. Daza Serna; Cardona Alzate;

doi: 10.1016/j.biortech.2015.09.078

pmid: 26459196

Supercritical fluids as a green technology for the pretreatment of lignocellulosic biomass

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Abstract

One of the main drawbacks for using lignocellulosic biomass is related to its recalcitrance. The pretreatment of lignocellulosic biomass plays an important role for delignification and crystallinity reduction purposes. In this work rice husk (RH) was submitted to supercritical pretreatment at 80°C and 270 bar with the aim to determine the effect on lignin content, crystallinity as well as enzymatic digestibility. The yields obtained were compared with dilute sulfuric acid pretreatment as base case. Additionally a techno-economic and environmental comparison of the both pretreatment technologies was performed. The results show a lignin content reduction up to 90.6% for the sample with 75% moisture content using a water-ethanol mixture. The results for crystallinity and enzymatic digestibility demonstrated that no reductions were reached. Supercritical pretreatment presents the best economical and environmental performance considering the solvents and carbon dioxide recycling.

Related Organizations

National University of Colombia
Colombia
National University of Colombia
Colombia

Keywords

Conservation of Natural Resources, Ethanol, Water, Chromatography, Supercritical Fluid, Green Chemistry Technology, Oryza, Carbon Dioxide, Sulfuric Acids, Solid Waste, Lignin, Environmental Pollutants, Biomass

Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	150
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 1%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 1%