Dark Fermentative Hydrogen Production from Neutralized Acid Hydrolysates of Conifer Pulp

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논문

Dark Fermentative Hydrogen Production from Neutralized Acid Hydrolysates of Conifer Pulp

학술지

Applied biochemistry and biotechnology

저자명

Nissilä , Marika E.; Li, Ya-Chieh; Wu, Shu-Yi; Puhakka, Jaakko A.

초록

<P>Concentrated acid hydrolysis of cellulosic material results in high dissolution yields. In this study, the neutralization step of concentrated acid hydrolysate of conifer pulp was optimized. Dry conifer pulp hydrolysis with 55?% H(2)SO(4) at 45?C for 2?h resulted in total sugar yields of 22.3-26.2?g/L. The neutralization step was optimized for solid Ca(OH)(2), liquid Ca(OH)(2) or solid CaO, mixing time, and water supplementation. The highest hydrogen yield of 1.75?mol?H(2)/mol glucose was obtained with liquid Ca(OH)(2), while the use of solid Ca(OH)(2) or CaO inhibited hydrogen fermentation. Liquid Ca(OH)(2) removed sulfate to below 30?mg SO(4) (2-)/L. Further optimization of the neutralization conditions resulted in the yield of 2.26?mol?H(2)/mol glucose.</P>

발행연도

2012

발행기관

Springer-Verlag

ISSN

0273-2289

ISSN

1559-0291

권

168

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