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STUDY OF THE PREPARATION OF SUGAR FROM HIGH-LIGNIN LIGNOCELLULOSE APPLYING SUBCRITICAL WATER AND ENZYMATIC HYDROLYSIS: SYNTHESIS AND CONSUMABLE COST EVALUATION


HANNY F. SANGIAN, DIAN RANGGINA, GALIH M. GINTING, AGENG A. PURBA, SETIYO GUNAWAN, ARIEF WIDJAJA *
Sepuluh Nopember Institute of Technology, Department of Chemical Engineering, 60111, Surabaya, Indonesia
*Corresponding author: arief_w@chem-eng.its.ac.id

Issue:

SCSCC6, Volume XVI, No. 1

Section:

Volume XVI, No. 1 (2015)

Abstract:

This study concern sugars hydrolyzed from the high-lignin coconut coir dust using moderate subcritical water (SCW) hydrolysis at pressures 20-40 bar for 1 h and to evaluate the consumable costs driver generated. The SCW method produced two products, sugar liquid and solid (SCW-treated substrate). The solid was proceeded to prepare the sugar via enzymatic hydrolysis using pure cellulase. Yield of sugar hydrolyzed from lignocellulose by SCW technique was 0.25 gram sugar/gram cellulose +hemicellulose, or 0.09-gram sugar/gram lignocellulose at 160 °C and 40 bar. While, the maximum yield of sugar liberated enzymatically from SCW-treated solid was 0.35-gram sugar/gram cellulose+hemicellulose, or 0.13-gram sugar/gram SCW-treated solid. It was found that carbon dioxide gas was the highest cost driving in SCW hydrolysis.

Keywords:

cellulose, cellulase, coconut coir dust, hemicellulose, lignin, reducing sugar.

Code [ID]:

CSCC6201501V01S01A0002 [0004200]

Full paper:

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