湖北农业科学 ›› 2022, Vol. 61 ›› Issue (3): 65-69.doi: 10.14088/j.cnki.issn0439-8114.2022.03.013

• 资源·环境 • 上一篇    下一篇

煤质活性炭改性对百草枯的去除探究

范凯轩, 张鹃, 周巡, 刘雨瑶, 钟永科   

  1. 遵义医科大学药学院,贵州 遵义 563000
  • 收稿日期:2021-09-08 出版日期:2022-02-10 发布日期:2022-03-11
  • 通讯作者: 钟永科,男,教授,博士,(电子信箱)zhongy@163.com。
  • 作者简介:范凯轩(1987-),男,陕西咸阳人,硕士,研究方向为药学,(电话)18329719875(电子信箱)378259066@qq.com
  • 基金资助:
    国家自然科学基金项目(21661038)

Modification of coal activated carbon removal of paraquat to explore

FAN Kai-xuan, ZHANG Juan, ZHOU Xun, LIU Yu-yao, ZHONG Yong-ke   

  1. Department of Pharmacy, Zunyi Medical University, Zunyi 563000,Guizhou, China
  • Received:2021-09-08 Online:2022-02-10 Published:2022-03-11

摘要: 为探究百草枯溶液初始浓度、溶液pH、活性炭投加量、搅拌速度、温度对活性炭去除百草枯的效果,以原煤质活性炭为原料、硝酸为活化剂加热,用硝酸对煤质活性炭改性,采用Boehm滴定法和液态氮吸附对活性炭表征。结果表明,在弱碱环境下,有利于百草枯的吸附;提高百草枯初始质量浓度和温度的条件下均可以提高吸附量,投加量的增加可以提高吸附率;热处理C-15可以进一步提高吸附量。硝酸改性提高了百草枯吸附的吸附量和吸附速率,其吸附百草枯的行为符合准二级动力学模型。该吸附是一个吸热过程,具有一定的物理吸附作用。

关键词: 活性炭, 改性, 百草枯, 吸附

Abstract: To explore paraquat solution initial concentration, solution pH, activated carbon additive quantity, shake speed, temperature of removing paraquat, the influence of raw coal quality carbon as raw material, nitric acid as activator heated, coal quality were introduced in this paper. By coal activated carbon modified with nitric acid, the use of Boehm titration and liquid nitrogen adsorption characterization of activated carbon. Under the environment of weak base, It is helpful for paraquat adsorption; Improving the quality of paraquat initial concentration and temperature conditions can remove the adsorption capacity, the increased amount of additive quantity is not conducive to the adsorption; Heated treatment of C-15 adsorption can be further improved. Nitrate modification improved the adsorption capacity and adsorption rate of paraquat adsorption, the adsorption behavior of paraquat meet must level 2 dynamic model. The adsorption is an endothermic process behavior, It has some physical adsorption.

Key words: activated carbon, modification, paraquat, adsorption

中图分类号: