摘要
采用水热预处理与高温炭化相耦合的方法(HTP工艺),分别在180℃和400~700℃下制备了水热-热解生物炭(HPBC),研究了炭化温度对沼渣HPBC强化吸附四环素(TC)的性能和机理。结果表明与直接炭化方法相比,HTP工艺制备的HPBC,其比表面积和孔体积有很大的提升;HTP工艺中炭化温度为600℃时,得到最优的HPBC结构性能。沼渣HPBC吸附四环素的过程符合拟二级动力学模型和Langmuir等温吸附模型;HPBC600具有最大的TC理论吸附量(35.97 mg/g)。孔填作用,氢键作用和π-π堆积作用是HPBC强化吸附TC的主要机理。
Biochar(HPBC)derived from hydrothermal pretreatment coupled with high temperature carbonization(HTP process)was prepared at 180℃and 400~700℃respectively.The properties and mechanism of carbonization temperature on enhanced adsorption of tetracycline(TC)by biogas residue HPBC were studied.The results showed that HPBC prepared by HTP process had a great increase in specific surface area and pore volume compared with the direct carbonization method,and the optimal structure and properties of HPBC was obtained when the pyro-lysis temperature was 600℃.The adsorption process of TC by HPBC fitted the pseudo-second order kinetic model and Langmuir model.HPBC600 had the largest theoretical adsorption capacity of TC(35.97 mg/g).Pore filling,hydrogen bonding andπ-πstacking were the main enhanced adsorption mechanisms of TC by HPBC.
作者
付敦
王永庆
王妍
陶正妍
陈婉玲
FU Dun;WANG Yongqing;WANG Yan;TAO Zhengyan;CHEN Wanling(School of Resources and Civil Engineering,Suzhou University,Suzhou 234000,China;College of Resources and Environment,Yangtze University,Wuhan 430100,China)
出处
《宿州学院学报》
2023年第6期28-34,共7页
Journal of Suzhou University
基金
国家自然科学青年基金项目(42207305)
安徽省教育厅高校自然科学研究重点项目(KJ2021A1116,KJ2021A1113)
安徽省大学生创新创业训练计划项目(S202110379187)
宿州学院大学生创新创业训练计划项目(KYLXYBXM22-075,KYLXYBXM22-082)。
关键词
生物炭
水热反应
炭化
四环素
吸附
Biochar
Hydrothermal reaction
Pyrolysis
Tetracycline
Adsorption
