摘要
以经过水蒸气蒸馏法提取后的芹菜籽残渣为前驱体,采用H3PO4两步活化和热解法制备生物炭,并研究了其对水中苯酚的吸附性能。SEM、FTIR的表征结果表明,制备的生物炭表面含有大量含氧官能团。吸附试验结果表明,对初始质量浓度为50 mg/L的苯酚溶液,当吸附剂投加量为3 g/L时,苯酚去除率可以达到71.4%。生物炭上的苯酚吸附过程符合Freundlich等温方程和伪二级动力学模型,最大吸附容量可达50.56 mg/g。
Biochar was prepared by H3PO4 twostep activation and pyrolysis using celery seed residue extracted by steam distillation as precursor.Its adsorption performance for phenol in water was studied.The results of SEM and FTIR showed that a large number of oxygencontaining functional groups were found on its surface.The results of the adsorption test showed that 71.4%of phenol(50 mg/L)was removed after using 3 g/L of biochar.The phenol adsorption process on biochar conformed to the Freundlich isotherm equation and pseudosecondorder kinetic model.The maximum adsorption capacity was 50.56 mg/g.
作者
徐恺
唐克
常春
蒙丽颖
Xu Kai;Tang Ke;Chang Chun;Meng Liying(College of Chemistry and Chemical Engineering,Bohai University,Jinzhou 121013,China;Key Laboratory for Synthesis and Application of the Functional Compounds,Jinzhou 121013,China)
出处
《工业水处理》
CAS
CSCD
北大核心
2020年第6期36-39,共4页
Industrial Water Treatment
基金
国家自然科学基金青年项目(21606023)
辽宁省自然科学基金项目(20180550030)
锦州市科技计划项目(16A2G26)。
关键词
芹菜籽药渣
生物炭
吸附
苯酚
celery seed residue
biochar
adsorption
phenol
