Persulfate based pretreatment to enhance the enzymatic digestibility of rice straw

Oxidation induced by potassium persulfate was evaluated as an economic substitute for the Fenton-like reaction for the purpose of rice straw pretreatment in terms of temperature (80-140 degrees C), potassium persulfate concentration (5-100 mM) and process time (0.5-3 h), an optimal pretreatment condition was identified: 120 degrees C for 2 h with 75 mM potassium persulfate concentration and yielded 91% enzymatic digestibility using 25.2 FPU/g of biomass. Crystallinity index, SEM and SEM-EDS analyses revealed that biomass was indeed disrupted and components like silica were exposed. All this suggested that this persulfate-based pretreatment method, which is distinctively advantageous in terms of effectiveness and economics, can indeed be a competitive option. (C) 2016 Published by Elsevier Ltd.
Publisher
ELSEVIER SCI LTD
Issue Date
2016-12
Language
ENG
Keywords

LIGNOCELLULOSIC BIOMASS; OXIDATION; HYDROLYSIS; EXTRACTION; ETHANOL

Citation

BIORESOURCE TECHNOLOGY, v.222, pp.523 - 526

ISSN
0960-8524
DOI
10.1016/j.biortech.2016.09.122
URI
http://hdl.handle.net/10203/214206
Appears in Collection
CE-Journal Papers(저널논문)
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