合成应用于木质纤维素水解液精制的吸附树脂

对稀酸水解液进行精制脱毒是生化法中高效利用木质纤维素类生物质不可缺少的处理过程。本文以三种混合木质纤维素类生物质水解液为研究对象，以苯乙烯等为原料合成吸附树脂，考察了二乙烯基苯（DVB）浓度、单体和交联剂比例、非极性和弱极性单体等条件对吸附树脂吸附效果的影响。研究发现，固液比1.4∶40的情况下，不经过任何其他工艺，仅用吸附树脂，糠醛的去除率可以达到76%以上，5-羟甲基糠醛去除率可超过40%，可溶性木质素的最高去除率约为87%，而总糖损失率在8%左右。一定范围内提高交联剂的量可提高树脂的吸附性能，从而提高抑制剂的去除率。添加丙烯酸甲酯（MA）单体来改变树脂的极性，并不能提高树脂对每种抑制剂的吸附。

Synthesis and Application of Adsorption Resin to Purification of Lignocellulose Biomass Hydrolysate

Purification of diluted-acid hydrolysate is essential for efficient utilization of lignocellulose biomass. In this work, synthesis and application of adsorption resin to several kind of lignocellulose biomass hydrolysate by diluted-acid were studied, including the effects on adsorption of concentration of divinyl benzene (DVB), the ratio of monomer and cross-linking agent, the difference of nonpolar and weak-polar monomers. It was found that, without other processes assisting, the prepared adsorption resins were able to remove more than 76% furfural, over 40% 5-hydroxymethyl furfural (5-HMF), and about 87% soluble lignin (SL) at the solid-liquid ratio of 1.4:40, while the loss of total sugar was just near 8%. Besides, the studies were shown that increase of cross-linking agent was likely to improve the adsorption capacity and the removal ratio of inhibitors. As a weak-polar monomer, methyl acrylate (MA) was unable to increase every desired adsorbate.