Improvement of gaseous energy recovery from sugarcane bagasse by dark fermentation followed by biomethanation process.

Abstract:

:The aim of the present study was to enhance the gaseous energy recovery from sugarcane bagasse. The two stage (biohydrogen and biomethanation) batch process was considered under mesophilic condition. Alkali pretreatment (ALP) was used to remove lignin from sugarcane bagasse. This enhanced the enzymatic digestibility of bagasse to a great extent. The maximum lignin removal of 60% w/w was achieved at 0.25 N NaOH concentration (50°C, 30 min). The enzymatic hydrolysis efficiency was increased to about 2.6-folds with alkali pretreated sugarcane bagasse as compared to untreated one. The maximum hydrogen and methane yields from the treated sugarcane bagasse by biohydrogen and biomethanation processes were 93.4 mL/g-VS and 221.8 mL/g-VS respectively. This process resulted in significant increase in energy conversion efficiency (44.8%) as compared to single stage hydrogen production process (5.4%).

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Kumari S,Das D

doi

10.1016/j.biortech.2015.07.038

subject

Has Abstract

pub_date

2015-10-01 00:00:00

pages

354-63

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(15)00991-8

journal_volume

194

pub_type

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