Effects of different pretreatment methods on the structural characteristics, enzymatic saccharification and photo-fermentative bio-hydrogen production performance of corn straw
Journal
Bioresource Technology
Journal Volume
304
Date Issued
2020
Author(s)
Abstract
In this study, the effects of different pretreatment methods, including hydrothermal, acid, alkali, acid-heat, and alkali-heat on the structural characteristics, enzymatic saccharification and photo-fermentative bio-hydrogen production performance of corn straw were investigated. Results revealed that all the studied pretreatments effectively destroyed the corn straw structure and improved its enzymatic saccharification potential. The alkali-heat and alkali pretreatment showed significant advantage in reducing sugars release, and the highest total reducing sugar concentration of 23.07 g/L was obtained under the pretreatment condition of 2% NaOH-Heat. The maximum cumulative hydrogen yield of 137.76 mL/g TS was achieved from 2% NaOH pretreated corn straw, while corn straw pretreated with 4% NaOH-heat had the minimum cumulative hydrogen yield of 44.20 mL/g TS. These results suggest that appropriate pretreatment can effectively destroy the corn straw structure and enhance its enzymatic saccharification and hydrogen production performance. © 2020 Elsevier Ltd
Subjects
Bio-hydrogen; Enzymatic saccharification; Photo-fermentation; Pretreatment; Structural characteristic
Other Subjects
Saccharification; Sodium hydroxide; Bio-hydrogen; Enzymatic saccharification; Photo fermentation; Pre-Treatment; Structural characteristics; Hydrogen production; alkali; biohydrogen; hydrogen; sodium hydroxide; sugar; unclassified drug; alkali; hydrogen; chemical reaction; concentration (composition); enzyme; enzyme activity; fermentation; hydrogen; straw; sugar; temperature effect; Article; enzymatic saccharification; fermentation; nonhuman; photo fermentation; priority journal; Rhodobacter capsulatus; Rhodobacter sphaeroides; Rhodopseudomonas; Rhodopseudomonas capsulate; Rhodopseudomonas palustris; Rhodospirillum rubrum; saccharification; fermentation; hydrolysis; maize; Zea mays; Alkalies; Fermentation; Hydrogen; Hydrolysis; Zea mays
Type
journal article