Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou 510640, PR China; CAS Key Laboratory of Renewable Energy, No.2 Nengyuan Road, Tianhe District, Guangzhou 510640, PR China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, No.2 Nengyuan Road, Tianhe District, Guangzhou 510640, PR China; University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing 100049, PR China; R&D Center of Xuyi Attapulgite Applied Technology, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Xuyi 211700, PR China.
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou 510640, PR China; University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing 100049, PR China.
Bioresour Technol. 2020 Dec;318:124053. doi: 10.1016/j.biortech.2020.124053. Epub 2020 Aug 28.
Economical removal of fermentation inhibitors from lignocellulosic hydrolysate plays a considerable role in bioconversion of lignocellulose biomass. In this work, the textural properties of polyacrylamide/polystyrene interpenetrating polymer networks (PAM/PS IPNs) on adsorption of fermentation inhibitors from sugarcane bagasse hydrolysate (SCBH) were investigated for the first time. The results showed that, the specific surface area, pore diameter and surface polarity had important influence on its adsorption performance towards sugars, organic acids, furans and acid-soluble lignin. The PAM/PS IPNs under the optimal copolymerization situation achieved the high selectivity coefficients of 4.07, 14.9, 21.2 and 25.8 with respective to levulinic acid, furfural, hydroxymethylfurfural (HMF) and acid-soluble lignin, and had a low total sugar loss of 2.09%. Overall, this research puts forward a design and synthetic strategy for adsorbent to remove fermentation inhibitors from lignocellulosic hydrolysate.
从木质纤维素水解物中经济地去除发酵抑制剂在木质纤维素生物质的生物转化中起着重要作用。在这项工作中，首次研究了聚丙烯酰胺/聚苯乙烯互穿聚合物网络（PAM/PS IPNs）在吸附甘蔗渣水解物（SCBH）中的发酵抑制剂方面的结构性能。结果表明，比表面积、孔径和表面极性对其对糖、有机酸、呋喃和酸溶性木质素的吸附性能有重要影响。在最佳共聚条件下，PAM/PS IPNs 对乙酰丙酸、糠醛、羟甲基糠醛（HMF）和酸溶性木质素的选择性系数分别达到 4.07、14.9、21.2 和 25.8，总糖损失率低至 2.09%。总的来说，这项研究为从木质纤维素水解物中去除发酵抑制剂的吸附剂提出了一种设计和合成策略。
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