1
|
Zu JH, Pan XH, Su XD, Liu F, Zhan J, He Y, Chen JG. Adsorption of Zn(II) from aqueous solution and separation of zinc isotopes by displacement chromatography using chelating adsorbent. J Chromatogr A 2024; 1717:464659. [PMID: 38271771 DOI: 10.1016/j.chroma.2024.464659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/14/2023] [Accepted: 01/13/2024] [Indexed: 01/27/2024]
Abstract
The removal of zinc ions (Zn(II)) in water and the separation of zinc isotopes were fully investigated in this study. Imidodiacetic acid (IDA) type adsorbent (named PSGI) based on polystyrene spheres (PS) was synthesized by simultaneous irradiation grafting. By adsorption method, the removal of Zn(II) from water by the chelating adsorbent was studied in batch experiments. Under optimized condition, PSGI showed the removal efficiency of more than 98 % for Zn(II) and the adsorption capacity of 70.1 mg/g. Langmuir isothermal and pseudo-second-order kinetic model fitted the experimental results better, indicating that the adsorption is dominated by chemical adsorption. The spent adsorbent (PSGI-Zn) was used for further zinc isotope separation by displacement chromatography using EDTA-NH4 solution as eluent. Due to the mass effect of isotopes, 70Zn was found to preferentially fractionated into the front-end effluents with the highest front enrichment values of 70Zn/64Zn. By extending the migration distance to 20 m, we obtained the best isotope enrichment with the front maximum enrichment values as 1.0949, 1.0739 and separation coefficient values as 1.977 × 10-3, 8.33 × 10-3 corresponding to the isotope pairs 66Zn/64Zn, 68Zn/64Zn.
Collapse
Affiliation(s)
- Jian-Hua Zu
- School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China.
| | - Xiao-Han Pan
- School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Xing-Dong Su
- PR China Nuclear Power Technology Research Institute, Shenzhen, 518028, PR China
| | - Feng Liu
- PR China Nuclear Power Technology Research Institute, Shenzhen, 518028, PR China
| | - Jie Zhan
- PR China Nuclear Power Technology Research Institute, Shenzhen, 518028, PR China
| | - Ye He
- PR China Nuclear Power Technology Research Institute, Shenzhen, 518028, PR China
| | - Jiu-Geng Chen
- Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| |
Collapse
|
2
|
Huang SA, Teng HJ, Su YT, Liu XM, Li B. Trithiocyanurate-functionalized hydrochar for effectively removing methylene blue and Pb (II) cationic pollutants. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 337:122585. [PMID: 37734632 DOI: 10.1016/j.envpol.2023.122585] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/16/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023]
Abstract
Functionalization can change the physicochemical properties of hydrochar and improve its ability to adsorb pollutants. Herein, a trithiocyanurate-functionalized hydrochar (TTHC) was obtained from acylation of chloroacetyl chloride and hydrochar and modification with trithiocyanuric acid in alkaline conditions. TTHC can efficiently remove cationic methylene blue (MB) and Pb(II) from wastewater. The removal can be expressed with pseudo-second-order kinetic and Langmuir models. The MB and Pb(II) removed uptakes by TTHC at 298 K exceeded 909.9 and 182.8 mg g-1 respectively, and the removal rates reached 90% and 98% within 120 min respectively. Characterizations show TTHC is functionalized with trithiocyanurate, and rich in thiolate and aromaticity, and tends to adsorb MB/Pb(II) via multiple adsorption mechanisms. After five sorption-desorption regeneration cycles, TTHC maintained 80% and 99% adsorption capacities for MB and Pb(II) respectively. Therefore, TTHC is a promising efficient sorbent for removing MB and Pb(II) from effluents.
Collapse
Affiliation(s)
- Shen-Ao Huang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, PR China
| | - Hua-Jing Teng
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, PR China
| | - Yin-Tao Su
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, PR China
| | - Xiao-Meng Liu
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, PR China
| | - Bing Li
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, PR China.
| |
Collapse
|
3
|
Li Y, Wang X, Xia J, Zhou G, Wang X, Wang D, Zhang J, Cheng J, Gao F. Flower-like Thiourea-Formaldehyde Resin Microspheres for the Adsorption of Silver Ions. Polymers (Basel) 2023; 15:polym15112423. [PMID: 37299222 DOI: 10.3390/polym15112423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/14/2023] [Accepted: 05/17/2023] [Indexed: 06/12/2023] Open
Abstract
Around a quarter of annual worldwide silver consumption comes from recycling. It remains a primary target for researchers to increase the silver ion adsorption capacity of the chelate resin. Herein, a series of flower-like thiourea-formaldehyde microspheres (FTFM) possessing diameters of 15-20 μm were prepared via a one-step reaction under acidic conditions, and the effects of the monomer molar ratio and reaction time on the micro-flower morphology, specific surface area, and silver ion adsorption performance were explored. The nanoflower-like microstructure showed the maximum specific surface area 18.98 ± 0.949 m2/g, which was 55.8 times higher than that of the solid microsphere control. As a result, the maximum silver ion adsorption capacity was 7.95 ± 0.396 mmol/g, which was 10.9 times higher than that of the control. Kinetic studies showed that the equilibrium adsorption amount of FT1F4M was 12.61 ± 0.016 mmol/g, which was 11.6 times higher than that of the control. Additionally, the isotherm study of the adsorption process was performed, and the maximum adsorption capacity of FT1F4M was 18.17 ± 1.28 mmol/g, which was 13.8 times that of the control according to the Langmuir adsorption model. Its high absorption efficiency, convenient preparation strategy, and low cost recommend FTFM bright for further use in industrial applications.
Collapse
Affiliation(s)
- Yuhan Li
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaoli Wang
- Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China
| | - Jing Xia
- Ansteel Beijing Research Institute Co., Ltd., Beijing 102200, China
| | - Guangwei Zhou
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaomu Wang
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| | - Dingxuan Wang
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| | - Junying Zhang
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jue Cheng
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| | - Feng Gao
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| |
Collapse
|
4
|
Shu R, Qiao Q, Guo F, Dong K, Liu S, Xu L, Bai Y, Zhou N. Controlled design of Na-P1 zeolite/ porous carbon composites from coal gasification fine slag for high-performance adsorbent. ENVIRONMENTAL RESEARCH 2023; 217:114912. [PMID: 36435498 DOI: 10.1016/j.envres.2022.114912] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 06/16/2023]
Abstract
Low-cost and concentrated industrial wastes have been recognized as a sustainable resource for preparation of new functional materials. Here, a new method was designed for the synthesis of porous composites containing high-purity Na-P1 zeolite and porous carbon from waste coal gasification fine slag (CGFS), which was treated first by acid leaching to controllably remove metal impurities and adjust Si/Al ratio, followed by NaOH fusion and hydrothermal treatment. By leaching with 1.0 mol/L HCl solution, the Si/Al ratio of the raw CGFS increased to 5.7, and the obtained CZ-1.0 consisted of high-purity Na-P1 zeolite with a typical cone-shaped flower cluster shape. The residue carbon in CGFS can be further activated to form porous carbon and graphite carbon layers interposed in the zeolite structure. The specific surface area and pore volume of CZ-1.0 reached 153.91 m2/g and 0.18 cm3/g, respectively. CZ-1.0 exhibited remarkable adsorption performance for methylene blue (MB) with the adsorption capacity reaching 137.5 mg/g for 100 mg/L MB solution. The adsorption process is mainly controlled by the chemisorption mechanism, and the adsorption of MB by CZ-1.0 may include ion exchange, hydrogen bond interaction, π-π bond interaction and van der Waals force. NaCl solution was successfully used as the desorption agent to regenerate the composite material, and the removal rate remained above 92% after five cycles. This work provides an effective strategy to synthesize a practically applicable adsorbent from the waste coal gasification fine slag for the purification of MB wastewater.
Collapse
Affiliation(s)
- Rui Shu
- School of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, 221116, Xuzhou, China
| | - Qixia Qiao
- School of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, 221116, Xuzhou, China
| | - Feiqiang Guo
- School of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, 221116, Xuzhou, China.
| | - Kaiming Dong
- School of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, 221116, Xuzhou, China
| | - Sha Liu
- School of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, 221116, Xuzhou, China
| | - Liya Xu
- School of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, 221116, Xuzhou, China
| | - Yonghui Bai
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China.
| | - Nan Zhou
- Institute of Thermal and Power Engineering, Zhejiang University of Technology, Liuhe Road 288#, 310023, Hangzhou, China
| |
Collapse
|
5
|
Wang B, Wu K, Liu T, Cheng Z, Liu Y, Liu Y, Niu Y. Feasible synthesis of bifunctional polysilsesquioxane microspheres for robust adsorption of Hg(II) and Ag(I): Behavior and mechanism. JOURNAL OF HAZARDOUS MATERIALS 2023; 442:130121. [PMID: 36303352 DOI: 10.1016/j.jhazmat.2022.130121] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/22/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
The pollution of Hg(II) and Ag(I) to water system exerts hazardous effect to aquatic ecosystem and public security. Simple strategy for constructing adsorbents to efficient remove them is greatly desired. Thus, a series of thiol and amino groups containing bifunctional polysilsesquioxanes (ASPSS) microspheres with adjustable porous structure and functional group content were synthesized by one-step feasible sol-gel process. The adsorption behavior and mechanism of ASPSS microspheres toward Hg(II) and Ag(I) was thoroughly determined. The maximum adsorption capacity of ASPSS for Hg(II) and Ag(I) are 4.32 and 3.86 mmol·g-1 under 25 ℃. The as-prepared ASPSS microspheres can 100% selectively capture Hg(II) with the coexisting of Mn(II), Co(II), Pb(II), Cd(II), Cu(II), Fe(III). And they can 100% adsorb Ag(I) with the presence of Cd(II), Pb(II), Co(II), Ni(II), and Zn(II). Moreover, the ASPSS microspheres exhibit good removal efficiency for Hg(II) and Ag(I) from simulated industrial wastewater with the coexistence of multiple pollutants. Adsorption mechanism suggests the adsorption for Hg(II) and Ag(I) is the synergistic coordination effect of amino and thiol groups. The excellent adsorption selectivity for Hg(II) and Ag(I) is attributed to the super binding ability of these functional group. ASPSS microspheres also exhibit good regeneration ability and could be reused for removing Hg (II) and Ag(I) from aqueous solution with practical value.
Collapse
Affiliation(s)
- Bingxiang Wang
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Kaiyan Wu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Tonghe Liu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Zekang Cheng
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Yi Liu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Yongfeng Liu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China
| | - Yuzhong Niu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China.
| |
Collapse
|
6
|
Wang T, Yang F, Zhang L, Tang Z, Liu W, Zhong L, He Z, Chai S. Fluorescence Quenching and Highly Selective Adsorption of Ag + Using N-Doped Graphene Quantum Dots/Poly(vinyl alcohol) Composite Membrane. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Ting Wang
- School of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi710055, China
| | - Fan Yang
- School of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi710055, China
| | - Liang Zhang
- School of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi710055, China
- Shaanxi Provincial Key Laboratory of Gold and Resource, Xi’an University of Architecture and Technology, Xi’an, Shaanxi710055, China
| | - Zuobin Tang
- School of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi710055, China
| | - Wenwen Liu
- School of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi710055, China
| | - Lvling Zhong
- School of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi710055, China
| | - Zhixian He
- Instrumental Analysis Center, Xi’an University of Architecture and Technology, Xi’an, Shaanxi710055, China
| | - Shouning Chai
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi710049, China
| |
Collapse
|
7
|
Sun HX, Zhou J, Zhang Z, Wang SY, Chen X, Zhao LJ, Du L, Xie MJ, Zhao QH. Anion-Controlled Assembly of a Silver-Responsive Bifunctional Coordination Polymer with Detection and Large Adsorption Capacity. Inorg Chem 2022; 61:18044-18058. [DOI: 10.1021/acs.inorgchem.2c02355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Han-Xu Sun
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research and Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming650091, P. R. China
| | - Jie Zhou
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research and Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming650091, P. R. China
| | - Zhen Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research and Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming650091, P. R. China
| | - Shu-yu Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research and Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming650091, P. R. China
| | - Xue Chen
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research and Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming650091, P. R. China
| | - Li-Jia Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research and Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming650091, P. R. China
| | - Lin Du
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research and Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming650091, P. R. China
| | - Ming-Jin Xie
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research and Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming650091, P. R. China
| | - Qi-Hua Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research and Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming650091, P. R. China
| |
Collapse
|
8
|
Rapid and selective recovery of Ag(I) from simulative electroplating effluents by sulfydryl-rich covalent organic framework (COF-SH) with high adsorption capacity. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
9
|
Cao M, Feng Y, Wang L, Zhao T, Zhao H, Zhou Z. Effect of La2Sn2O7 content on Ag-La2Sn2O7/SnO2 arc erosion behavior and mechanism. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2021.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
10
|
Efficient removal of 110mAg nanoparticles (110mAg Nps) in nuclear wastewater by Amines-containing anionic adsorbent PP-g-GMA@EDA. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
11
|
Chu S, Feng X, Liu C, Wu H, Liu X. Advances in Chelating Resins for Adsorption of Heavy Metal Ions. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01353] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Shiyu Chu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
- Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu 611731, China
| | - Xiaofang Feng
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
- Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu 611731, China
| | - Chenchen Liu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
- Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu 611731, China
| | - Hanrong Wu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
- Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu 611731, China
| | - Xiaobo Liu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
- Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu 611731, China
| |
Collapse
|
12
|
Liu YQ, Zhu W, Yuan Q, Hu JM, Zhang X, Shen AG. Photoreduced Ag+ surrounding single poly(4-cyanostyrene) nanoparticles for undifferentiated SERS sensing and killing of bacteria. Talanta 2022; 245:123450. [DOI: 10.1016/j.talanta.2022.123450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 03/30/2022] [Accepted: 04/03/2022] [Indexed: 11/26/2022]
|
13
|
Turning waste into adsorbent: Modification of discarded orange peel for highly efficient removal of Cd(II) from aqueous solution. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
14
|
Hyder MKZ, Ochiai B. Synthesis of a Highly Selective Scavenger of Precious Metals from a Printed Circuit Board Based on Cellulose Filter Paper Functionalized with a Grafted Polymer Chain Bearing N-Methyl-2-hydroxyethylcarbamothioate Moieties. ACS OMEGA 2022; 7:10355-10364. [PMID: 35382283 PMCID: PMC8973153 DOI: 10.1021/acsomega.1c06988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
We report the synthesis and practical application of a novel scavenger for precious metals. The scavenger was prepared from cellulose filter paper with grafted chains of poly(glycidyl methacrylate) modified with a novel ligand group of N-methyl-2-hydroxyethylcarbamothioate moieties, introduced by the reaction with O-1-mercapto-3-phenoxypropan-2-yl N-methyl-2-hydroxyethylcarbamothioate. Batch experiments were performed to evaluate the capability of the scavenger in ranges of pH and acid concentration as well as to determine the kinetics and isotherm models. The scavenger was found to adsorb only Ag(I), Pd(II), and Au(III) from an aqueous media in the presence of coexisting ions of different bases and precious metals at wide ranges of pH and acid concentration. The adsorption rates fit a pseudo-second-order kinetic equation, and the adsorption reached equilibrium within 60 min. The isotherm studies indicated that the obtained data were a good fit with the Langmuir model. The maximum adsorption capacities of Ag(I), Pd(II), and Au(III) were 126.95, 124.67, and 230.67 mg g-1, respectively. Regeneration experiments indicated that the adsorbent maintained 97% of its initial efficiency even after five adsorption/desorption cycles. The scavenger was effectively utilized to recover Ag(I), Pd(II), and Au(III) from an aqua regia solution of waste printed circuit boards.
Collapse
|
15
|
Liu S, Liu L, Su G, Zhao L, Peng H, Xue J, Tang A. Enhanced adsorption performance, separation, and recyclability of magnetic core-shell Fe3O4@PGMA-g-TETA-CSSNa microspheres for heavy metal removal. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2021.105127] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
16
|
Pan XH, Zu JH. A highly hydrophilic cation exchange nonwoven with a further modifiable epoxy group prepared by radiation-induced graft polymerization. Polym Chem 2021. [DOI: 10.1039/d1py00866h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel cation exchange nonwoven PP-g-SSS/GMA containing epoxy and sulfonic groups was successfully prepared via radiation-induced simultaneous grafting polymerization by attaching GMA and SSS monomers onto PP nonwoven.
Collapse
Affiliation(s)
- Xiao-han Pan
- School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jian-hua Zu
- School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| |
Collapse
|