白酒酒糟稻壳基生物炭的制备及吸附应用  

Preparation and adsorption application of biochar from Baijiu distiller's grains husk

作　　者：王丹青 陈昊翔 李顺滢 周远浩 石胜鹏 叶宏[1,2] 郎莹 吴伯天 刘彩婷 黄明泉[1,2] WANG Danqing;CHENG Haoxiang;LI Shunying;ZHOU Yuanhao;SHI Shengpeng;YE Hong;LANG Ying;WU Botian;LIU Caiting;HUANG Mingquan(Key Laboratory of Geriatric Nutrition and Health,Beijing Technology and Business University,Beijing 100048,China;Key Laboratory of Brewing Molecular Engineering of China Light Industry,School of Light Industry,Beijing Technology andBusiness University,Beijing 100048,China;Beijing Research Institute of Chemical Industry,SINOPEC,Beijing 100013,China;Guizhou Wangmao Jiuqu Research Institute Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]北京工商大学老年营养与健康教育部重点实验室,北京100048 [2]北京工商大学轻工科学技术学院中国轻工业酿酒分子工程重点实验室,北京100048 [3]北京化工研究院中国石油化工股份有限公司,北京100013 [4]贵州王茅酒曲研究院有限公司,贵州贵阳550081

出　　处：《中国酿造》2023年第12期123-129,共7页China Brewing

基　　金：国家自然科学基金(32172299);十四五重点研发计划课题(2022YFD2101205);2023年研究生科研能力提升计划项目资助(19008023027)。

摘　　要：为促进酒糟的资源化开发和利用,以酱香型白酒酒糟稻壳为原料热解制备生物炭。以粗炭产率和不同乙醇体积分数溶液中的邻苯二甲酸二丁酯(DBP)吸附容量为评价指标,通过正交试验优化制备工艺,采用比表面及孔隙度分析仪、傅里叶变换红外光谱仪(FTIR)、扫描电镜-X射线能谱仪(SEM-EDS)对生物炭进行了表征。结果表明,酒糟稻壳基生物炭的最优制备工艺为炭化温度400℃,活化时间12 h,炭化时间2.5 h,碱料比2∶1,升温速率5℃/min。此优化条件下,粗炭产率为46.14%,DBP吸附容量最高为20.725 mg/g(水体系)。乙醇体积分数对生物炭的吸附性能有重要影响,随着乙醇体积分数在0~50%范围内升高,生物炭对DBP的吸附容量明显下降,但与商业活性炭相比,酒糟稻壳基生物炭对乙醇水溶液中DBP具有更优的吸附性能。To promote the resourceful development and utilization of Baijiu distiller's grains,the biochar was prepared from sauce-flavor(Jiangxiangxing)Baijiu distiller's grains husk by pyrolysis.Using raw biochar yield and the adsorption capacity of dibutyl phthalate(DBP) on biochar in solutions with different volume fractions of ethanol as evaluation indicators,the preparation process was optimized by orthogonal experiments.The biochar were characterized by specifics surface area and porosity analyzer,Fourier transform infrared spectroscopy(FTIR),and scanning electron microscope-X-ray energy spectrometer(SEM-EDS).The results showed that the optimal preparation process of biochar from sauce-flavor Baijiu distiller's grains husk were obtained as follows:pyrolysis temperature 400 ℃,activation time 12 h,pyrolysis time 2.5 h,alkali and material ratio 2∶1,and heating rate 5 ℃/min.Under these optimal conditions,the raw biochar yield was 46.14% and adsorption capacity of DBP(in aqueous system) was the highest of 20.725 mg/g,respectively.The volume fraction of ethanol had an important effect on the adsorption performance of biochar,and the adsorption capacity of biochar for DBP decreased significantly with the increase of the volume fraction of ethanol in the range of 0-50%.Compared with the commercial activated carbon,biochar from sauce-flavor Baijiu distiller's grains husk had a superior adsorption performance for DBP in aqueous ethanol solution.

关 键 词：酒糟稻壳 生物炭 邻苯二甲酸二丁酯 吸附剂 制备工艺优化 正交试验 

分 类 号：TS261.9[轻工技术与工程—发酵工程]