Lactic acid production by alkaline hydrothermal treatment of corn cobs

被引：69
|
作者：
Sanchez, Cristina [1 ]
Eguees, Itziar [1 ]
Garcia, Araceli [1 ]
Llano-Ponte, Rodrigo [1 ]
Labidi, Jalel [1 ]
机构：
[1] Univ Basque Country, Chem & Environm Engn Dept, Donostia San Sebastian 20018, Spain
来源：
CHEMICAL ENGINEERING JOURNAL | 2012年 / 181卷
关键词：
Corn cobs; Thermal conversion; Catalyst; Lactic acid; SUBCRITICAL WATER; CONVERSION; BIOMASS; FERMENTATION; CELLULOSE; SACCHARIFICATION; HYDROLYSIS; OXIDATION; RECOVERY; RESIDUES;
D O I：
10.1016/j.cej.2011.12.033
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
An experimental study was carried out for the corn cobs thermal conversion to obtain the maximum content in lactic acid. For this purpose, under the same conditions (275 degrees C and 30 min) different concentrations of Ca(OH)(2) as alkaline catalyst were used (from 0.32 M to 1 M). The maximum content of lactic acid (6.72 +/- 0.31 g/L) was obtained with 0.7 M of Ca(OH)(2). With this catalyst concentration, different reaction conditions were used (250, 275 and 300 degrees C and 15,30 and 45 min). The optimal conditions to produce the highest yield of lactic acid from corn cobs in alkaline conditions were determined at 300 degrees C and 30 min, achieving 44.76 +/- 2.59% respect to the total cellulose and hemicellulose contained in the initial corn cobs (7.38 +/- 0.43 g/L of lactic acid). (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：655 / 660
页数：6
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