基于低温预处理的花生壳发酵产氢效率提升及应用潜力研究  

ENHANCEMENT OF BIO-HYDROGEN PRODUCTION EFFICIENCY AND APPLICATION POTENTIAL OF PEANUT SHELL WITH LOW-TEMPERATURE PRETREATMENT

作　　者：齐男 赵一诺 赵鑫[2] 王俭[1] 杨春璐[1] 胡筱敏[2] QI Nan;ZHAO Yinuo;ZHAO Xin;WANG Jian;YANG Chunlu;HU Xiaomin(Liaoning University,Shenyang 110036,China;Northeastern University,Shenyang 110819,China)

机构地区：[1]辽宁大学,沈阳110036 [2]东北大学,沈阳110819

出　　处：《环境工程》2024年第5期83-89,共7页Environmental Engineering

基　　金：省博士科研启动基金计划项目“基于自然条件下的低温预处理纤维素类生物质与剩余污泥共发酵产氢研究”(2023010473-JH3/101)。

摘　　要：目前对于纤维素类废弃物发酵产氢效率提升的研究,大多集中于各种预处理方式对比及实验条件优化方向,但对低温常压预处理技术研究较少。采用正交试验设计(OED)和中心复合设计(CCD)设计了预处理条件,并通过直接测量法和响应面法对预处理温度条件和时间条件进行了优化。利用修正Gompertz模型(MGM)和Logistic函数模型(LFM)对低温预处理后的花生壳生物产氢进行了动力学模拟,并分析了其应用潜力。正交试验结果表明:花生壳在50℃下预处理12 h,最大TRS(总还原糖)为3.16%,优于中心复合设计。PSP在-80℃下处理12 h,产氢量达到最大值109.2 mL,相比对照组提高了54.46%。模型模拟表明:LFM对氢气产量的预测要比MGM更准确,预测值与实际值之间较高的相关系数和皮尔逊相关性也证明了这一点。低温预处理能有效提高花生壳的还原糖释放量,提升其产氢效率,在个别温度适宜的花生产区(如东北、河南等地),可借助自然气温实现花生壳的低能耗预处理,为经济高效、稳定地从花生壳中回收生物能源提供了一种新思路。At present,research on improving the hydrogen production efficiency of cellulose waste fermentation mostly focuses on comparing different pretreatment methods and optimizing experimental conditions.While there is little research on the experimental design and application analysis of low-temperature pretreatment technology.In this study,the pretreatment temperature and time of temperature pretreatment on peanut shell were optimized for further biohydrogen production.The pretreatment conditions were designed using orthogonal experiment design(OED)and central composite design(CCD)and optimized using the direct measurement and response surface methods.The modified Gompertz model(MGM)and a logistic function model(LFM)were employed to determine the kinetics of hydrogen-rich bioenergy production from the peanut shell.The OED results showed that peanut shell pretreated for 12 h at 50℃produced the maximum TRS of 3.16%,exhibiting a better result than CCD.A maximum hydrogen yield of 109.2 mL was obtained when the PSP was pretreated at-80℃for 12 h,which was 54.46%higher than the control.Model simulation indicated that the LFM predicted hydrogen production more accurately than the MGM,as evidenced by the high correlation coefficient and high Pearson's correlation between predicted and actual values.The high hydrogen yield promotion and the realization of no energy consumption of the temperature pretreatment in some peanut shell planting areas,can provide a potential application for cost-efficient and stabilized bioenergy recovery from peanut shell with temperature pretreatment.

关 键 词：低温预处理 生物制氢 花生壳 动力学分析 实验设计 

分 类 号：X71[环境科学与工程—环境工程]