Development of intergrated pretreatment fractionation process for biorefinery and bioethanol: application to almond shell
An unpolluted process of almond shell fraction by hot water pretreatment (HWP)coupled with organosolvent pretreatment of water/ethanol (OPWE) was studied. The intergrated pretreatment process for almond shell was compared with the hot water pretreatment(HWP), dilute acid pretreatment (DAP), ammonia pretreatment (AP), lime pretreatment LP, organosolvent pretreatment water/ethanol (OPWE), organosolvent pretreatment water/actone(OPWA). Hemicllulose sugars were recovered by the first residue liquid and the most of cellulose was retained in the residue solid part. The lignin part was obtained by simply adjust the pH from the second liquid. The imagines of the different pretreatment methods by SEM were first reported. The optimal two-stage process was the first stage HWP 195 oC,30min with 95.4％ glucose recovery yield and 92.25％ xylose removal yield and the second step OPWE 195 oC, 20min, 50％(w/w) ethanol with nearly 100％ glucose recovery yield and 90％ xylose removal yield and 61％ lignin removal yield. After enzymatic hydrolysis, the yield of glucose can reach 95％, more than the untreatment raw yiled 61％.
Fractionation Hot water pretreatment Organosolvent pretreatment Almond shell
Da Chun GONG William J.ORTS Kevin M.HOLTMAN Franqui-Espiet DIANA
Alan G.Macdiarmid Institute of Renewable Energy,China Three Gorges University ,Yichang,443002,PR Chi Bioproduct Chemistry and Engineering unit (BCE), Western Regional Research Center, United States Dep
国际会议
广州
英文
632-638
2008-12-03（万方平台首次上网日期，不代表论文的发表时间）