球磨碱盐耦合预处理: Effect of alkali salt-coupled ball milling pretreatment of wheat straw on improving enzymatic hydrolysis and energy efficiency
Effect of alkali salt-coupled ball milling pretreatment of wheat straw on improving enzymatic hydrolysis and energy efficiency
Recently, PhD student Miss Xiao-le Liu supervised by Prof. Zhen Fang published a research article in Fuel about alkali salt-coupled ball-milling pretreatment of wheat straw for enzymatic hydrolysis.
Wheat straw was pretreated with a combination of ball milling (BM) and NaAlO2 particles (NaAlO2-BM) for enzymatic hydrolysis within a short hydrolysis period. The effects of energy consumption on modifications of physicochemical proprieties and energy efficiency were elucidated. NaAlO2-BM pretreatment decreased particle size rapidly to tissue scale in 10 min with energy consumption reduced by 0.5 times compared to BM pretreatment. NaAlO2-BM pretreated for 20 min achieved a glucose yield of 95.4% at a cellulase loading of 10 FPU/g dry substrate for 24 h enzymatic hydrolysis and provided the highest energy efficiency of 0.121 kg glucose/kWh, increasing by 1.1 times than BM pretreatment. Energy consumption showed a positive relationship with cellulose content while it negatively correlated with median particle size, cellulose crystallinity and energy efficiency. The combination of BM and NaAlO2 particles was demonstrated to be a promising pretreatment approach for glucose production and improving energy efficiency during hydrolysis of lignocellulose.
Related results were published in Fuel:
Xiao-le Liu, Zhen Fang*, Xiao-fei Tian*, Zheng-diao Miao, Effect of alkali salt-coupled ball milling pretreatment of wheat straw on improving enzymatic hydrolysis and energy efficiency. Fuel 340 (2023) 127336. https://doi.org/10.1016/j.fuel.2022.127336
Wheat straw was ball milling pretreated with NaAlO2 particles for 20 min with 95.4% glucose yield after 24 h enzymatic hydrolysis. It achieved the highest energy efficiency of 0.121 kg glucose/kWh.（球磨辅助NaAlO2颗粒预处理小麦秸秆20分钟。酶水解24 h，预处理后的麦秸秆酶解率可达95.4%，最大能效为0.121千克葡萄糖/千瓦时）
-----------------------------------------------------------
球磨碱盐耦合预处理麦秸秆对提高酶解和能效的影响
最近，博士生刘小乐（女）在方真教授的指导下，在国际学术期刊Fuel （Q1, IF 8.035）发表一篇关于球磨辅助NaAlO2颗粒预处理小麦秸秆用于提高酶解和能效的研究性论文。
采用球磨和NaAlO2颗粒耦合预处理麦秸秆，并阐述了能量消耗对物理化学性质改变和能量效率的影响。球磨耦合NaAlO2颗粒预处理10分钟可使颗粒粒径迅速减小至组织规模，能耗比单独球磨预处理降低0.5倍。球磨耦合NaAlO2颗粒预处理20分钟，纤维素酶添加量为10 FPU/g干基质，酶解24 h后的葡萄糖收率可达95.4%；其能量效率高达0.121 kg葡萄糖/千瓦时，是单独球磨预处理的1.1倍。能量消耗与纤维素含量呈正相关，与平均粒径、纤维素结晶度和能量效率呈负相关。
结果发表在Fuel
Xiao-le Liu, Zhen Fang*, Xiao-fei Tian*, Zheng-diao Miao, Effect of alkali salt-coupled ball milling pretreatment of wheat straw on improving enzymatic hydrolysis and energy efficiency. Fuel 340 (2023) 127336. https://doi.org/10.1016/j.fuel.2022.127336
