低温-空气制备的负载蒙脱石-生物炭吸附阳离子染料研究  

Synthesis of Montmorillonite-biochar Produced at Low Temperature Under Air Atmosphere and Its Adsorption Behavior for Cationic Dye from Aqueous Solution

作　　者：胡艳琳 郭燕萍 吴寒梅 张菲 Hu Yanlin;Guo Yanping;Wu Hanmei;Zhang Fei(School of Geography and Resources,Guizhou Education University,Guiyang 550018,China)

机构地区：[1]贵州师范学院地理与资源学院,贵州贵阳550018

出　　处：《山东化工》2023年第5期63-65,80,共4页Shandong Chemical Industry

基　　金：国家级大学生创新创业训练计划项目(202214223010);贵州省科技厅科学技术基金(黔科合基础-ZK[2021]一般286);贵州师范学院校级重点项目(校2021025)。

摘　　要：本研究利用低温-空气一步热解方法成功制得负载蒙脱石-生物炭。吸附效果、影响因素和再生潜力研究结果表明,负载蒙脱石能提升茶叶渣生物炭对典型阳离子染料—亚甲基蓝的吸附能力,提高温度和振荡速度有利于增加其吸附量。再生不会显著影响负载蒙脱石-茶叶渣生物炭对亚甲基蓝的吸附能力,多次再生后其平均吸附量保持在~24.0 mg·g~(-1)。上述结果说明负载蒙脱石-生物炭可用于阳离子染料吸附且具有循环再利用潜力,吸附机制可能主要被阳离子交换(蒙脱石和生物炭自身)和静电吸附(生物炭自身)控制。In this study,the loaded montmorillonite-biochar was successfully produced using a low temperature-air one-step pyrolysis method.The results of the adsorption effect,influencing factors and regeneration potential showed that the loaded montmorillonite enhanced the adsorption capacity of the tea residue biochar for the typical cationic dye,methylene blue,and increasing the temperature and oscillation rate was beneficial to increase its adsorption capacity.Regeneration did not significantly affect the adsorption of methylene blue on the loaded montmorillonite-tea residue biochar,and the average adsorption capacity was maintained at~24.0 mg·g-1 after several regenerations.these results indicate that the loaded montmorillonite-biochar can be used for cationic dye adsorption and has recycling potential,and that the adsorption mechanism may be mainly controlled by cation exchange(montmorillonite and biochar itself)and electrostatic adsorption(biochar itself).

关 键 词：生物炭 黏土 低温 亚甲基蓝 吸附 

分 类 号：TQ028.1[化学工程]