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Production of fuel ethanol and methane from garbage by high-efficiency two-stage fermentation process

Paper ID Volume ID Publish Year Pages File Format Full-Text
21596 43230 2009 5 PDF Available
Title
Production of fuel ethanol and methane from garbage by high-efficiency two-stage fermentation process
Abstract

A two-stage fermentation process, consisting of a simultaneous saccharification and fermentation (SSF) stage and a dry methane fermentation stage, was developed to utilize garbage for the production of fuel ethanol and methane. Garbage from families, canteens and concessionaires was used for the study. Saccharification method was studied and the results indicated that the liquefaction pretreatment and the combination of cellulase and glucoamylase was effective for polysaccharide hydrolysis of family garbage with a high content of holocellulose and that SSF was suitable for ethanol fermentation of garbage. Ethanol productivity could be markedly increased from 1.7 to 7.0 g/l/h by repeated-batch SSF of family garbage. A high ethanol productivity of 17.7 g/l/h was achieved when canteen garbage was used. The stillage after distillation was treated by dry methane fermentation and the results indicated that the stillage was almost fully digested and that about 850 ml of biogas was recovered from 1 g of volatile total solid (VTS). Approximately 85% of the energy of the garbage was converted to fuels, ethanol and methane by this process.

Keywords
Garbage; Ethanol fermentation; Simultaneous saccharification and fermentation; Dry methane fermentation; Waste biomass utilization
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Production of fuel ethanol and methane from garbage by high-efficiency two-stage fermentation process
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 108, Issue 6, December 2009, Pages 508–512
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us