摘要
本文通过调整改性榴莲壳吸附剂的投加量、pH、吸附时间和振荡速率等重要因素,探究各因素对改性榴莲壳吸附亚甲基蓝的影响,并对吸附机理进行探讨。研究结果表明,各因素中pH值的影响最大,当改性榴莲壳的投加量为0.5g,振荡速率为165r·min^-1,吸附时间为70min,pH值为9时,改性榴莲壳对水中亚甲基蓝的去除效果达到最佳,去除率为98.03%。改性榴莲壳对亚甲基蓝的吸附机理符合Freundlich模型和准二级动力学模型,吸附过程是以物理吸附占主导的自发、放热过程。
In this paper,by adjusting the dosage,pH,adsorption time and oscillation rate of modified durian shell adsorbent,the effect of modified durian shell on methylene blue adsorption was explored,and the adsorption mechanism was discussed.The results showed that the pH value had the greatest influence.When the dosage of modified durian shell was 0.5g,the oscillation rate was 165 r/min,the adsorption time was 70min,and the pH value was 9,the removal rate of methylene blue was 98.03%.The adsorption mechanism of modified durian shell for methylene blue was in accordance with Freundlich model and pseudo-second-level kinetic model.The adsorption process was spontaneous and exothermic dominated by physical adsorption.
作者
窦诗童
廖颖敏
余婷
甘蕊
刘小筱
DOU Shitong;LIAO Yingmin;YU Ting;GAN Rui;Liu Xiaoxiao(Key Laboratory of Estuarine Ecological Security and Environmental Health,Tan Kah Kee College,Xiamen University,Zhangzhou 363105,China)
出处
《化工技术与开发》
CAS
2020年第10期64-68,共5页
Technology & Development of Chemical Industry
基金
福建省高校青年自然基金重点项目(JZ160494)
厦门大学嘉庚学院大学生创新创业训练计划项目(202013469109)。
关键词
改性榴莲壳
吸附
亚甲基蓝
动力学热力学
modified durian shell
adsorption
methylene blue
kinetics
thermodynamics
