Adsorption Characteristics of 2,4-Dichlorophenoxybutric Acid Using Bamboo Activated Carbon in a Fixed Bed  

作　　者：Tae Young Kim Sung Yong Cho Tae Young Kim;Sung Yong Cho(Department of Environmental Energy Engineering, Chonnam National University, Gwangju, Republic of Korea;Department of Environmental Education, Mokpo National University, Jeollanamdo, Republic of Korea)

机构地区：[1]Department of Environmental Energy Engineering, Chonnam National University, Gwangju, Republic of Korea [2]Department of Environmental Education, Mokpo National University, Jeollanamdo, Republic of Korea

出　　处：《Journal of Agricultural Chemistry and Environment》2022年第3期184-195,共12页农业化学和环境（英文）

摘　　要：Adsorption and desorption characteristics of 2,4-dichlorophenoxybutyric acid (2,4-DB) from aqueous solution on bamboo activated carbon (BAC) were studied in a fixed bed adsorber. The adsorption equilibrium capacity of 2,4-DB on BAC increased with decreasing initial pH of the solution and with a maximum adsorption capacity of 1.61 mol/kg. The adsorption rate of 2,4-DB on BAC could be best fitted by the pseudo first-order model. The adsorption model based on the linear driving force approximation (LDFA) was used for simulating the adsorption behavior of the 2,4-DB in a fixed bed. More than 95% desorption of 2,4-DB was obtained using distilled water.Adsorption and desorption characteristics of 2,4-dichlorophenoxybutyric acid (2,4-DB) from aqueous solution on bamboo activated carbon (BAC) were studied in a fixed bed adsorber. The adsorption equilibrium capacity of 2,4-DB on BAC increased with decreasing initial pH of the solution and with a maximum adsorption capacity of 1.61 mol/kg. The adsorption rate of 2,4-DB on BAC could be best fitted by the pseudo first-order model. The adsorption model based on the linear driving force approximation (LDFA) was used for simulating the adsorption behavior of the 2,4-DB in a fixed bed. More than 95% desorption of 2,4-DB was obtained using distilled water.

关 键 词：Adsorption DESORPTION 2 4-Dichlorophenoxybutric Acid Fixed Bed KINETIC 

分 类 号：O64[理学—物理化学]