Skoči na glavni sadržaj

Chemical and Biochemical Engineering Quarterly, Vol. 31 No. 1, 2017.

Izvorni znanstveni članak

https://doi.org/10.15255/CABEQ.2016.913

Combined Approaches to Xylose Production from Corn Stover by Dilute Acid Hydrolysis

A. Fehér ; Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary, Műegyetem rkp. 3. Budapest H-1111, Hungary
C. Fehér ; Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary, Műegyetem rkp. 3. Budapest H-1111, Hungary
M. Rozbach ; Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary, Műegyetem rkp. 3. Budapest H-1111, Hungary
Z. Barta ; Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary, Műegyetem rkp. 3. Budapest H-1111, Hungary

Puni tekst: engleski pdf 617 Kb

str. 77-87

preuzimanja: 647

citiraj

Sažetak

Corn stover is a lignocellulosic biomass, an agricultural by-product, a possible raw material for xylose production. In this study corn stover was hydrolyzed with sulfuric and hydrochloric acid. In the presented work, hydrochloric acid resulted in the highest, 88.8 % xylose yield of theoretical under the conditions of 2 % (w/w) hydrochloric acid
concentration, 40-minute reaction time, 10 % (w/w) dry matter, at 120 °C. Sulfuric acid experiments resulted in 81.9 % xylose yield of theoretical by using 1.5 % (w/w) sulfuric acid, 60-minute reaction time, at 140 °C, 7 % (w/w) dry matter. Acid hydrolysis at low
dry matter content resulted in relatively low sugar concentrations. Hydrolyzate recycling concentrated xylose to three-times, while the recycling does not decrease the xylose yields. It is also shown that the pseudo first-order and biphasic kinetic models can be based on total sugar concentrations.






This work is licensed under a Creative Commons Attribution 4.0 International License.

Ključne riječi

pretreatment; xylose; hydrolyzate recycling; kinetic modelling

Hrčak ID:

179834

URI

https://hrcak.srce.hr/179834

Datum izdavanja:

13.4.2017.

Posjeta: 1.207 *