膜分离技术在D-核糖分离提取中的应用  

Application of Membrane Technology in D-ribose Extraction

作　　者：严滨[1,2] 吴发辉 林丽华 傅海燕[1] 石谦[1] 柴天[1] 金磊[1] 

机构地区：[1]厦门理工学院环境工程系,厦门361024 [2]三达膜科技(厦门)有限公司,厦门361022

出　　处：《科技导报》2009年第11期52-55,共4页Science & Technology Review

基　　金：福建省科技厅青年人才项目(2008F3106);厦门理工学院科学技术研究项目(YKJ07007R)

摘　　要：采用超滤和反渗透技术对D-核糖提取工艺进行了优化。实验表明。采用截留分子量为50000的聚醚砜超滤膜对发酵液进行超滤。通量在202～210L·m^-2·h^-1。D-核糖的发酵液经超滤后，滤液质量相对于传统板框过滤得到较大提高。透光率提高2倍以上。采用反渗透技术对树脂解析液进行预浓缩是可行的，反渗透过程的通量在15L·m^-2·h^-1出现拐点。通过反渗透将糖度浓缩到11％-12％比较适宜。运行成本较传统三效蒸发法降低60％以上。超滤和反渗透单元的膜通量稳定，通过简单的化学清洗可以恢复通量。The membrane technology is applied to D-ribose extraction, where uhrafiltration membranes are used to remove the proteins from D-ribose fermentation liquor. After comparing three different membranes, one of them, Polyethersulfone （PES） was chosen for industrial applications. The transmittance of solution after ultrafiltration is doubled as compared with frame filtration, and the resin contamination is decreased. A reverse osmosis technology may be applied for the resin eluent pre-concentration, with the inflection point of flux being 15 L·m^-2·h^-1. Through the reverse osmosis, an appropriate sugar content of 11%-12% may be obtained, with the cost being reduced by 60%. The flux of membrane, both in uhrafihration and reverse osmose, is stable, and can be recovered after a simple chemical cleaning.

关 键 词：超滤 反渗透 D-核糖 

分 类 号：X703[环境科学与工程—环境工程]