•Novel two-step pretreatment of rice straw to improve its ethanol production economy.•High purity xylose recovered from the acid treatment liquor with 83.2% yield.•Sulfomethylation treatment liquor recovered as a cement water reducer.•SSF of the two-step treated rice straw to ethanol with 86.4% yield.
Applied Energy – Elsevier
Published: Sep 15, 2015
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