油茶果壳活性炭的制备及其对Cr(Ⅵ)的去除  

Preparation of Camellia Shell Activated Carbon and Its Application in the Removal of Cr(Ⅵ)

作　　者：苏良佺 黄倩 柯金炼[2] 卢玉栋[2] SU Liang-quan;HUANG Qian;KE Jin-lian;LU Yu-dong(Fujian Academy of Forestry,Fuzhou 350012,China;College of Chemistry and Chemical Engineering,Fujian Normal University,Fujian 350007,China)

机构地区：[1]福建省林业科学研究院,福建福州350012 [2]福建师范大学化学与材料学院,福建福州350007

出　　处：《广州化学》2021年第2期27-33,共7页Guangzhou Chemistry

基　　金：省属公益类科研院所基本科研专项(2019R1009-8)。

摘　　要：利用磷酸活化法制备油茶果壳活性炭,并将其作为吸附剂用于去除水溶液中的Cr(Ⅵ),同时探讨了不同参数(Cr(Ⅵ)的初始浓度、吸附剂的用量、pH、温度等)对油茶果壳活性炭吸附Cr(Ⅵ)的影响。结果表明:当温度为293 K,Cr(Ⅵ)初始浓度为250 mg/L,pH为2.0时,Cr(Ⅵ)的最大吸附量可达165.0 mg/L。根据吸附动力学原理,发现其吸附过程遵循拟二级动力学模型。Cr(Ⅵ)的去除程度随Cr(Ⅵ)初始浓度的升高而增加,且其平衡数据与Freundlich模型拟合良好。Activated carbon from Camellia camellia shell was prepared by phosphoric acid activation method, and used as adsorbent to remove Cr(Ⅵ) from aqueous solution. The effects of different parameters(initial concentration of Cr(Ⅵ), the amount of adsorbent, p H, temperature, etc.) on the adsorption of Cr(Ⅵ) from Camellia camellia shell activated carbon were investigated. The results show that the maximum adsorption capacity of Cr(Ⅵ) can reach 165.0 mg/L when the temperature is 293 K, the initial concentration of Cr(Ⅵ) is 250 mg/L, and the pH is 2.0. The adsorption kinetics was found to follow a pseudo-second order kinetic model. The extent of the Cr(Ⅵ) removal increased with increasing initial Cr(Ⅵ) concentration and the equilibrium data fitted well to the Freundlich model.

关 键 词：油茶果壳 Cr(Ⅵ) 吸附 吸附等温线 

分 类 号：S794.4[农业科学—林木遗传育种]