BioChem - DOS

Second-generation ethanol production from elephant grass at high total solids

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

Menegol, D.; Fontana, R.C.; Dillon, A.J.P.; Camassola, M.

The enzymatic hydrolysis of Pennisetum purpureum (elephant grass) was evaluated at high total solid levels (from 4% to 20% (w/v)) in a concomitant ball milling treatment in a rotating hydrolysis reactor (RHR). The greatest glucose yield was 20.17% when 4% (w/v) untreated biomass was employed. When sugars obtained from enzymatic hydrolysis were submitted to fermentation with Saccharomyces cerevisiae, the greatest ethanol yield was 22.61% when 4% (w/v) untreated biomass was employed; however, the highest glucose concentration (12.47g/L) was obtaining using 20% (w/v) solids and highest ethanol concentration (6.1g/L) was obtained using 16% (w/v) solids. When elephant grass was hydrolyzed in the rotating hydrolysis reactor, ethanol production was about double that was produced when the biomass was hydrolyzed in a static reactor (SR). These data indicate that it is possible to produce ethanol from elephant grass when milling treatment and enzymatic hydrolysis are performed at the same time.

2016

Elsevier Applied Science

0960-8524

211

pp.280-290

10.1016/j.biortech.2016.03.098

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART75353280

Elephant grass; Enzymatic hydrolysis; Penicillium echinulatum; Saccharomyces cerevisiae; Ethanol