Simultaneous removal of 5-hydroxy methyl furfural (5-HMF) and hydrogen production from acid (H2SO4) pretreated red-algal hydrolysate via hybrid immobilized cells
Simultaneous removal of 5-hydroxy methyl furfural (5-HMF) and hydrogen production from acid (H2SO4) pretreated red-algal hydrolysate via hybrid immobilized cells
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DOI：
10.1016/j.algal.2015.07.015
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发表时间：
2015-09
影响因子：
5.1
通讯作者：
Gopalakrishnan Kumar;P. Sivagurunathan;Takurou Kobayashi;Kaiqin Xu;Sang‐Hyoun Kim
中科院分区：
文献类型：
--
作者：
Gopalakrishnan Kumar;P. Sivagurunathan;Takurou Kobayashi;Kaiqin Xu;Sang‐Hyoun Kim
研究了利用杂化固定化细胞沿着H2的产生作为能量载体去除经稀酸预处理的红藻水解液中5-羟甲基糠醛（5-HMF）的新方法。在间歇条件下，在50%（v/v）藻类水解物含量（相当于16.6 g糖/L）下，获得1.6 g/L（100%去除）的峰值5-HMF去除率和1.48 L/L-d的产氢速率。除此之外，仅发生了5-HMF的去除，但氢气的产生被显著抑制。在50%AH的最佳浓度下进行的厌氧序批式发酵产氢实验表明，产氢速率和产氢率稳定，分别为4.8L/L-d和2.40mol/mol己糖。
This study dealt with a new approach for the removal of 5-hydroxy methyl furfural (5-HMF) from dilute acid pretreated red algal hydrolysate using hybrid immobilized cells along with the generation of H2as energy carrier. Under batch conditions, the peak 5-HMF removal of 1.6 g/L (100% removal) and hydrogen production rate of 1.48 L/L-d were obtained at 50% (v/v) algal hydrolysate content which is equivalent to 16.6 g sugar/L. Beyond the content, only the 5-HMF removal has been taken place, but the hydrogen production has been inhibited significantly. Further, an anaerobic sequencing batch operation performed using the optimal 50% AH concentration showed a stable hydrogen production rate and yield of 4.8 L/L-d and 2.40 mol/mol hexoseutilizedrespectively.