Modification of coal activated carbon removal of paraquat to explore

doi:10.14088/j.cnki.issn0439-8114.2022.03.013

Abstract

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

CLC Number:

O647.33

FAN Kai-xuan, ZHANG Juan, ZHOU Xun, LIU Yu-yao, ZHONG Yong-ke. Modification of coal activated carbon removal of paraquat to explore[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(3): 65-69.

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