Detoxification of acid pretreated spruce hydrolysates with ferrous sulfate and hydrogen peroxide improves enzymatic hydrolysis and fermentation
Journal article, 2014

The aim of the present work was to investigate whether a detoxification method already in use during waste water treatment could be functional also for ethanol production based on lignocellulosic substrates. Chemical conditioning of spruce hydrolysate with hydrogen peroxide (H2O2) and ferrous sulfate (FeSO4) was shown to be an efficient strategy to remove significant amounts of inhibitory compounds and, simultaneously, to enhance the enzymatic hydrolysis and fermentability of the substrates. Without treatment, the hydrolysates were hardly fermentable with maximum ethanol concentration below 0.4 g/l. In contrast, treatment by 2.5 mM FeSO4 and 150 mM H2O2 yielded a maximum ethanol concentration of 8.3 g/l.

Author

V. P. Soudham

Umeå University

Chalmers, Chemical and Biological Engineering, Life Sciences, System Biology

Tomas Brandberg

University of Borås

J. P. Mikkola

Umeå University

Åbo Akademi

Christer Larsson

Chalmers, Chemical and Biological Engineering, Life Sciences, System Biology

Bioresource Technology

0960-8524 (ISSN)

Vol. 166 559-565

Subject Categories

Chemical Sciences

DOI

10.1016/j.biortech.2014.05.096

More information

Latest update

12/13/2018