[1]曹春芮,刘章军,康海生,等.板栗壳色素醛交联树脂对水中Pb(Ⅱ)吸附性能的研究[J].江苏林业科技,2021,48(06):29-33.[doi:10.3969/j.issn.1001-7380.2021.06.005]
　Cao Chunrui,Liu Zhangjun,Kang Haisheng,et al.Elimination of Pb(Ⅱ) from water via adsorption to resin of chestnut shell pigment cross-linked with formaldehyde[J].Journal of Jiangsu Forestry Science &Technology,2021,48(06):29-33.[doi:10.3969/j.issn.1001-7380.2021.06.005]
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板栗壳色素醛交联树脂对水中Pb(Ⅱ)吸附性能的研究()
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《江苏林业科技》[ISSN:1001-7380/CN:32-1236/S]

卷:
第48卷
期数:
2021年06期
页码:
29-33
栏目:
试验研究
出版日期:
2021-12-31

文章信息/Info

Title:
Elimination of Pb(Ⅱ) from water via adsorption to resin of chestnut shell pigment cross-linked with formaldehyde
文章编号:
1001-7380（2021）06-0029-05
作者:
曹春芮1; 刘章军2; 康海生1; 白双成1; 姚增玉1*
1.西南林业大学 西南山地森林资源保育与利用教育部重点实验室, 云南 昆明 650233；
2.昆明市呈贡区国有新城林场, 云南 昆明 650504
Author(s):
Cao Chunrui1; Liu Zhangjun2; Kang Haisheng1; Bai Shuangcheng1; Yao Zengyu1*
1. Key Laboratory of Ministry of Education for Forest Resources Conservation and Utilization, Southwest Forestry University,Kunming 650233, China；
2. State-owned New Town Forest Farm, Chenggong District, Kunming City, Kunming 650504, China
关键词:
板栗壳色素; 树脂; 吸附; 铅
Keywords:
Chestnut shell pigment; Resin; Adsorption; Pb(Ⅱ)
分类号:
O614.43+
DOI:
10.3969/j.issn.1001-7380.2021.06.005
文献标志码:
A
摘要:
采用氨催化—热固化法合成甲醛交联板栗壳色素树脂，通过振荡平衡批处理法研究了初始pH对水中Pb(II)吸附的影响，利用准一级动力学、准二级动力学和粒内扩散模型拟合了吸附动力学数据，并采用Langmuir、Freundlich等温线对吸附平衡数据进行拟合。结果表明，甲醛交联板栗壳色素树脂吸附水中Pb(II)的适宜pH为5—6；动力学模型符合准二级动力学模型，以化学吸附为主导，粒内扩散并非唯一的限速步骤；等温吸附数据同时符合上述2个模型，饱和吸附量为68.49 mg/g；吸附过程为吸热反应，可以自发进行，受熵驱动。
Abstract:
The resin of chestnut shell pigment cross-linked with formaldehyde was synthesized by the method involving in ammonia catalyzing and thermal curing.The effects of initial pH on the adsorption of Pb(II) in water was studied using the oscillation equilibrium batch method. The kinetic data were fitted with the pseudo-first-order, the pseudo-second-order and the intra-particle diffusion model, and the equilibrium data were analyzed using the Langmuir, Freundlich isotherms. It was found that the suitable pH value of Pb(II) solutions was 5—6 for the adsorption. The kinetic data were fitted better with the pseudo-second-order equation, suggesting the adsorption is a chemical process. The intra-particle diffusion was found to be one of the rate-limiting steps. The equilibrium data complied with the above two model, with a saturated adsorption capacity of 68.49 mg/g. The adsorption is a spontaneous endothermic process driven by entropy.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2021-10-06;修回日期：2021-10-28
基金项目：云南省农业基础研究联合专项“板栗壳色素基多孔树脂微球合成及其处理含铬废水应用基础研究”（2018FG001-008）。
作者简介：曹春芮（1995- ），女，云南建水人，硕士。主要从事经济林栽培与利用方面研究。E-mail: 1316307152@qq.com
*通信作者：姚增玉（1974- ），男，陕西定边人，研究员，博士。主要从事经济林栽培与利用等方面研究。E-mail: z-yyao@hotmail.com
更新日期/Last Update: 2022-01-13