印迹聚乙烯醇/ 壳聚糖吸附剂从钴镍溶液中选择性吸附Ni2+ 研究#br#

金属矿山 ›› 2025, Vol. 54 ›› Issue (10): 123-130.

印迹聚乙烯醇/ 壳聚糖吸附剂从钴镍溶液中选择性吸附Ni2+ 研究#br#

刘洁岭^1,2　赵　莹^1,2　郭　娜^1,2

1. 四川建筑职业技术学院,四川德阳 618000;2. 四川省城市污泥建材资源化利用工程研究中心,四川德阳 618000

出版日期:2025-10-15 发布日期:2025-11-06
通讯作者: 赵　莹(1988—),女,讲师,硕士。
作者简介:刘洁岭(1986 一),女,副教授,硕士。
基金资助:
四川省自然科学基金项目(编号:2024NFSC0133);四川建筑职业技术学院科技项目(编号:2023KJ07)。

Study on Selective Adsorption of Ni2+ from Cobalt-Nickel Solution by Imprinted Polyvinyl Alcohol / Chitosan Adsorbent#br#

LIU Jieling^1,2　ZHAO Ying^1,2　GUO Na^1,2

1. Sichuan College of Architectural Technology,Deyang 618000,China;
2. Sichuan Engineering Research Center for Resource Utilization of Municipal Sludge for Building Materials,Deyang 618000,China

Online:2025-10-15 Published:2025-11-06

摘要/Abstract

摘要： 为实现二次资源中钴镍离子的高效分离,研究以镍离子(Ni2+ )为模板,聚乙烯醇(PVA)和壳聚糖(CS)
为基体,制备了镍离子印迹PVA/ CS 复合泡沫吸附剂(P-IIP)。为精准确定吸附剂的最优制备工艺,研究通过系统设
计试验对关键制备条件进行优化,最终明确最佳参数为:模板 Ni2+ 浓度 8 000 mg/ L,交联剂环氧氯丙烷用量 6 mL/ g。
P-IIP 的吸附性能研究表明:在单一Ni2+溶液中,溶液pH 显著影响吸附效果,于pH= 4~5 获得最佳吸附容量;当Ni2+
初始浓度为100 mg/ L 时,P-IIP 的吸附容量可达43. 1 mg/ g,其吸附行为符合伪二级动力学和Langmuir 等温模型,理论
最大吸附容量为67. 4 mg/ g。P-IIP 在Co2+ -Ni2+二元混合溶液中的Ni2+ 选择性吸附试验结果显示:其对Ni2+ 具有优异
的选择性吸附性能。当Co2+与Ni2+浓度比从1 提升至1 000 时,P-IIP 对Ni2+的分离系数从11. 9 显著增至55. 1;即使
在高浓度Co2+ 共存的条件下,仍可实现对Ni2+ 的高效选择性吸附,这一结果为钴镍离子的有效分离提供了关键技术
支撑。

关键词: 聚乙烯醇　壳聚糖　离子印迹法　钴镍离子分离　选择性吸附

Abstract: In order to achieve efficient separation of cobalt and nickel ions from secondary resources,this study used
nickel ions (Ni2+ ) as the template and polyvinyl alcohol (PVA) and chitosan (CS) as the matrix to prepare a nickel ion-imprinted
PVA/ CS composite foam adsorbent (P-IIP). In order to accurately determine the optimal preparation process of the adsorbent,
this study optimized the key preparation conditions through systematically designed experiments,and finally identified
the optimal parameters as follows:the template Ni2+ concentration is 8 000 mg/ L,and the dosage of the cross-linking agent epichlorohydrin
is 6 mL/ g. Studies on the adsorption performance of P-IIP showed that:in a single Ni2+ solution,the solution pH
significantly affects the adsorption effect,with the optimal adsorption capacity achieved at pH from 4 to 5. When the initial concentration
of Ni2+ is 100 mg/ L,the adsorption capacity of P-IIP can reach 43. 1 mg/ g. Its adsorption behavior conforms to the
pseudo-second-order kinetic model and Langmuir isotherm model,with a theoretical maximum adsorption capacity of 67. 4
mg/ g. The experimental results of selective adsorption of Ni2+ by P-IIP in Co2+ -Ni2+ binary mixed solutions show that P-IIP has
excellent selective adsorption performance for Ni2+ . When the concentration ratio of Co2+ to Ni2+ increases from 1 to 1 000,the
separation factor of P-IIP for Ni2+ increases significantly from 11. 9 to 55. 1. Even under the condition of coexistence with highconcentration
Co2+ ,this adsorbent can still achieve efficient and selective adsorption of Ni2+ ,providing key technical support for
the effective separation of cobalt and nickel ions.

Key words: polyvinyl alcohol,chitosan,ion imprinting method,cobalt-nickel separation,selective adsorption

中图分类号:

刘洁岭, 　赵　莹, 　郭　娜, . 印迹聚乙烯醇/ 壳聚糖吸附剂从钴镍溶液中选择性吸附Ni2+ 研究#br#[J]. 金属矿山, 2025, 54(10): 123-130.

LIU Jieling, 　ZHAO Ying, 　GUO Na, . Study on Selective Adsorption of Ni2+ from Cobalt-Nickel Solution by Imprinted Polyvinyl Alcohol / Chitosan Adsorbent#br#[J]. Metal Mine, 2025, 54(10): 123-130.

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