Efficient Preparation of Xylonic Acid from Xylonate Fermentation Broth by Bipolar Membrane Electrodialysis

被引:31
作者
Cao, Rou [1 ,2 ,3 ]
Xu, Yong [1 ,2 ,3 ]
机构
[1] Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Jiangsu, Peoples R China
[2] Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Jiangsu, Peoples R China
[3] Jiangsu Prov Key Lab Green Biomass Based Fuels &, Nanjing 210037, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
Xylonic acid; Xylonate fermentation broth; Bipolar membrane electrodialysis (BMED); Acid yield; Current density; IONIC RADIUS; DESALINATION; SEPARATION;
D O I
10.1007/s12010-018-2827-y
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Preparation of xylonic acid from xylonate fermentation broth was studied in a four-chamber bipolar membrane electrodialysis (BMED) setup. The effects of metal-ion size, current density, and xylonate concentration on BMED were evaluated principally with respect to acid yield and partially with respect to efficiency and energy consumption. Sodium xylonate was more successful than potassium xylonate because of its smaller size and easier membrane penetrability for BMDE. Efficient electrodialysis was achieved using 50mA/cm(2) current density for 14min; thus, we obtained 92% xylonic acid from 100g/L sodium xylonate fermentation broth. In conclusion, BMED can be used for producing xylonic acid from fermentation broth. Moreover, this study highlights ways of improving the efficiency of BMED.
引用
收藏
页码:396 / 406
页数:11
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