BioChem - DOS

The influence of ferrous sulfate utilization on the sugar yields from dilute-acid pretreatment of softwood for bioethanol production

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Monavari, S.; Galbe, M.; Zacchi, G.

By employing metal salts in dilute-acid pretreatment the severity can be reduced due to reduced activation energy. This study reports on a dilute-acid steam pretreatment of spruce chips by addition of a small amount of ferrous sulfate to the acid catalyst, i.e., either SO<SUB>2</SUB>, H<SUB>2</SUB>SO<SUB>3</SUB> or H<SUB>2</SUB>SO<SUB>4</SUB>. The utilization of ferrous sulfate resulted in a slightly increased overall glucose yield (from 74% to 78% of the theoretical value) in pretreatment with SO<SUB>2</SUB> and H<SUB>2</SUB>SO<SUB>3</SUB>. Impregnation with ferrous sulfate and sulfuric acid did not give any improvement compared with pretreatment based solely on H<SUB>2</SUB>SO<SUB>4</SUB>4.

2011

Elsevier Applied Science

0960-8524

102

2

pp.1103-1108

10.1016/j.biortech.2010.08.077

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART55145271

Bioethanol; Steam pretreatment; SO2; Metal salt (FeSO44); Enzymatic hydrolysis