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Yu R, Wang Y, Xu X, Zheng Q, Jiang W, Yu J, Wang H, Kong Y, Yu C, Huang X. Steam activation of porous concave polymer nanospheres for high-efficient chromium and cadmium removal. J Colloid Interface Sci 2024; 660:859-868. [PMID: 38277842 DOI: 10.1016/j.jcis.2024.01.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/13/2024] [Accepted: 01/21/2024] [Indexed: 01/28/2024]
Abstract
The issue of heavy metal contamination in water is a global concern, and the development of highly efficient adsorbent materials is crucial for the removal and detoxification of heavy metals. Polymer-based materials have emerged as a promising class of adsorbents due to their ability to capture heavy metal pollutants and reduce them to less toxic forms. The limited surface area of conventional polymer adsorbents makes them less effective for high-capacity adsorption. Herein, we present a low-temperature steam activation approach to address this challenge. This activation approach leads to a remarkable increase of over 20 times in the surface area of concave aminophenol-formaldehyde (APF) polymer nanospheres (from 45 to 961 m2/g) while preserving their reductive functional groups. The activated concave APF nanospheres were evaluated for their adsorption capabilities towards two typical heavy metal ions (i.e., Cr(VI) and Cd(II)) in aqueous solutions. The maximum adsorption capacities achieved were 1054 mg g-1 for Cr(VI) and 342 mg g-1 for Cd(II), which are among the highest performances reported in the literature and are much higher than the capacities of the non-activated APF nanospheres. Additionally, approximately 71.5 % of Cr(VI) was simultaneously reduced to Cr(III) through the benzenoid amine pathway during adsorption, highlighting the crucial role of the steam activation strategy in enhancing the capability of polymer adsorbents.
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Affiliation(s)
- Rongtai Yu
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, PR China; Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia.
| | - Yueyang Wang
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, PR China
| | - Xin Xu
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, PR China
| | - Qiuyan Zheng
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, PR China
| | - Wen Jiang
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, PR China
| | - Jiaxin Yu
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, PR China
| | - Haiyang Wang
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, PR China
| | - Yueqi Kong
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Chengzhong Yu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia.
| | - Xiaodan Huang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia.
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Zhu K, He X, Chen P, Peng J, Dong X, Zhai S. Highly efficient Cu(II) capture by salicylaldoxime functionalized magnetic polydopamine core-shell hybrids: Behavior and mechanism. Int J Biol Macromol 2024; 265:130549. [PMID: 38553391 DOI: 10.1016/j.ijbiomac.2024.130549] [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: 11/12/2023] [Revised: 02/26/2024] [Accepted: 02/28/2024] [Indexed: 04/18/2024]
Abstract
Functionalized magnetic nanocomposites were considered as promising adsorbents owing to their abundant functional groups and ease of separation properties. Herein, we combined the solvothermal method with molecular copolymerization to synthesize a salicylaldoxime-grafted magnetic polydopamine (SMP) core-shell hybrid and exploited it for Cu(II) adsorption. The physicochemical properties of SMP were comprehensively studied by SEM, TEM, XRD, FT-IR, TGA, XPS, and VSM measurements. The results manifested that polydopamine acts as a bridge connecting magnetic iron oxide and salicylaldoxime to fabricated core-shell hybrids with rich functional groups. The batch experimental results showed that the Cu(II) adsorption was consumingly pH-reliant behavior, while adsorption data fitted the pseudo-second-order kinetic model and Langmuir isothermal model well, and the adsorption process achieved equilibrium within 60 min. Moreover, SMP exhibited remarkable anti-interference and can be recycled for 5 times with an inconspicuous decrease in adsorption performance. Importantly, salicylaldoxime functionalization endowed SMP with maximum Cu(II) adsorption capacity of 141.24 mg/g at pH 6.0 and 25 °C as compared with pure MP. Based on FT-IR and XPS study, the main adsorption mechanisms were proposed with a synergistic effect including a strong chemical chelation and partial Cu(II) reduction. Importantly, this strategy can be extended to multifunctional magnetic composites for Cu-contaminated wastewater cleanup.
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Affiliation(s)
- Kairuo Zhu
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Xindi He
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Peng Chen
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jianbiao Peng
- Collaborative Innovation Center of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province, School of Water Resources and Environmental Engineering, Nanyang Normal University, Nanyang 473061, PR China.
| | - Xiaoling Dong
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Shangru Zhai
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
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Xu H, Qin C, Zhang H, Zhao Y. New insights into long-lasting Cr(VI) removal from groundwater using in situ biosulfidated zero-valent iron with sulfate-reducing bacteria. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 355:120488. [PMID: 38457892 DOI: 10.1016/j.jenvman.2024.120488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/13/2024] [Accepted: 02/21/2024] [Indexed: 03/10/2024]
Abstract
Sulfidation enhances the reactivity of zero-valent iron (ZVI) for Cr(VI) removal from groundwater. Current sulfidation methods mainly focus on chemical and mechanical sulfidation, and there has been little research on biosulfidation using sulfate-reducing bacteria (SRB) and its performance in Cr(VI) removal. Herein, the ability of the SRB-biosulfidated ZVI (SRB-ZVI) system was evaluated and compared with that of the Na2S-sulfidated ZVI system. The SRB-ZVI system forms a thicker and more porous FeSx layer than the Na2S-sulfidated ZVI system, resulting in more sufficient sulfidation of ZVI and a 2.5-times higher Cr(VI) removal rate than that of the Na2S-sulfidated ZVI system. The biosulfidated-ZVI granules and FeSx suspension are the major components of the SRB-ZVI system. The SRB-ZVI system exhibits a long-lasting (11 cycles) Cr(VI) removal performance owing to the regeneration of FeSx. However, the Na2S-sulfidated ZVI system can perform only two Cr(VI) removal cycles. SRB attached to biosulfidated-ZVI can survive in the presence of Cr(VI) because of the protection of the biogenic porous structure, whereas SRB in the suspension is inhibited. After Cr(VI) removal, SRB repopulates in the suspension from biosulfidated-ZVI and produce FeSx, thus providing conditions for subsequent Cr(VI) removal cycles. Overall, the synergistic effect of SRB and ZVI provides a more powerful and environmentally friendly sulfidation method, which has more advantageous for Cr(VI) removal than those of chemical sulfidation. This study provides a visionary in situ remediation strategy for groundwater contamination using ZVI-based technologies.
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Affiliation(s)
- Huichao Xu
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun, 130021, China.
| | - Chuanyu Qin
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun, 130021, China.
| | - Hui Zhang
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun, 130021, China.
| | - Yongsheng Zhao
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun, 130021, China.
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Huang G, Wang M, Liu Q, Zhao S, Liu H, Liu F, Liu J. Efficient removal of tetracycline in water using modified eggplant straw biochar supported green nanoscale zerovalent iron: synthesis, removal performance, and mechanism. RSC Adv 2024; 14:3567-3577. [PMID: 38259987 PMCID: PMC10802144 DOI: 10.1039/d3ra08417e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
A novel NaOH modified eggplant straw biochar supported green nanoscale zerovalent iron (P-nZVI/ESBC) composite was synthesized and its removal performance and reaction mechanism for tetracycline (TC) in water were investigated. Multiple characterizations showed that the prepared P-nZVI/ESBC composite contained oxygen-containing functional groups (hydroxyl, carbonyl, and carboxyl groups) and Fe species (nZVI and its oxides). The dosage of composite, temperature, and solution pH significantly affected the removal capacity of the P-nZVI/ESBC composite for TC. The Avrami fraction-order kinetic model and Sips adsorption isotherm model can fit well the removal process of TC by the P-nZVI/ESBC composite, indicating that the adsorption behavior of TC involved multiple adsorption mechanisms and chemical adsorption might occur. The maximum adsorption capacity of the P-nZVI/ESBC composite for TC was 304.62 mg g-1. The adsorption and reductive degradation were the dominant mechanisms of TC removal by the P-nZVI/ESBC composite. This work offers abundant information on the application of eggplant straw to manufacture biochar-based composites for the efficient removal of antibiotic contaminants from aquatic environments.
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Affiliation(s)
- Guofu Huang
- School of Chemical Engineering and Environment, Weifang University of Science and Technology Weifang 262700 China
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources Weifang 262700 China
- Weifang Key Laboratory of Chemical Wastewater Pollution Control and Resource Reuse Weifang 262700 China
| | - Mianmian Wang
- School of Chemical Engineering and Environment, Weifang University of Science and Technology Weifang 262700 China
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources Weifang 262700 China
- Weifang Key Laboratory of Chemical Wastewater Pollution Control and Resource Reuse Weifang 262700 China
| | - Qing Liu
- School of Chemical Engineering and Environment, Weifang University of Science and Technology Weifang 262700 China
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources Weifang 262700 China
- Weifang Key Laboratory of Chemical Wastewater Pollution Control and Resource Reuse Weifang 262700 China
| | - Shasha Zhao
- School of Chemical Engineering and Environment, Weifang University of Science and Technology Weifang 262700 China
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources Weifang 262700 China
- Weifang Key Laboratory of Chemical Wastewater Pollution Control and Resource Reuse Weifang 262700 China
| | - Haijian Liu
- School of Chemical Engineering and Environment, Weifang University of Science and Technology Weifang 262700 China
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources Weifang 262700 China
- Weifang Key Laboratory of Chemical Wastewater Pollution Control and Resource Reuse Weifang 262700 China
| | - Fangfang Liu
- School of Chemical Engineering and Environment, Weifang University of Science and Technology Weifang 262700 China
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources Weifang 262700 China
| | - Jun Liu
- School of Chemical Engineering and Environment, Weifang University of Science and Technology Weifang 262700 China
- Shandong Engineering Laboratory for Clean Utilization of Chemical Resources Weifang 262700 China
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Wang Y, Lu W, Jing F, Jin M, He X, Xue Y, Hu Y, Yu R. Sulfhydryl-Functionalized Amino Group Polymer Microcomposites toward Efficient Adsorption of Aqueous Cr(VI), As(III), Cd(II), and Pb(II). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:519-528. [PMID: 38150093 DOI: 10.1021/acs.langmuir.3c02778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
The development of efficient adsorbents for heavy metal pollution, especially five toxic heavy metals, has attracted great research interest. Polymer-based adsorbents have aroused research value for their abundant functional groups and high porosity to the ability to capture metal ions. We designed a sulfhydryl-functionalized polymer microcomposite to take up Cr(VI), As(III), Cd(II), and Pb(II). The adsorption capacity achieved was 64.2 mg g-1 for Cr(VI), 44.9 mg g-1 for As(III), 35.5 mg g-1 for Cd(II), and 18.2 mg g-1 for Pb(II). Langmuir and Sips isotherm model is dominant for As(III), Cd(II), and Pb(II) adsorption. Pseudo-second-order kinetic models can better describe the adsorption behavior of Cr(VI), implying that chemisorption is accompanied by Cr(VI) adsorption. Cr(VI) simultaneous reduction to Cr(III) through the benzenoid amine oxidate pathway was the dominant mechanism, precipitation for Cd(II) adsorption was convinced, and chelation between As(III)/Pb(II) and─SH group and complexation between Pb(II) and C═O or benzene hydroxyl were a plausible mechanism for As(III) and Pb(II) adsorption.
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Affiliation(s)
- Yueyang Wang
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, P. R. China
| | - Weiwei Lu
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, P. R. China
| | - Fangfen Jing
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, P. R. China
| | - Mingzhu Jin
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, P. R. China
| | - Xinyang He
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, P. R. China
| | - Yuchen Xue
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, P. R. China
| | - Yajun Hu
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, P. R. China
| | - Rongtai Yu
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, P. R. China
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Sun XD, Song J, Duan Z, Feng D, Tian Z, Gao D. Poly(2-vinylpyridine)/MCM-41 Composites with Micropores and Switchable Mesopores for the Removal of Cr(VI). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 38016011 DOI: 10.1021/acs.langmuir.3c02744] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Porous structure design and reversible regulation of pore size during adsorption-desorption are crucial to the removal of pollutants in water such as Cr(VI). In this paper, micropores and switchable mesopores were constructed on MCM-41 to further improve adsorption-desorption performance of Cr(VI) via the confinement effect of micropores and opening and closing of mesopores. 2-Vinylpyridine was introduced and polymerized into the pores and on the pore mouth of MCM41 modified by C═C group (AM41) under the irradiation of ultraviolet light. The obtained samples (PM41) possessed mesopores (2.73 nm) and micropores (1.36 nm), where mesopores could open or close under different pH and micropores showed the confinement effect because their pore size is close to Cr(VI) diameter (0.87 nm). Compared with MCM-41, the introduction of poly(2-vinylpyridine) enhanced obviously its adsorptive ability and it trapped most of the Cr(VI) (99%) in solution, 12 times higher than that of the parent sample. The change of pore size is favorable to the cycle performance, and after 3 times recycling, the removal rate of Cr(VI) by PM41-20 remained above 88%. Langmuir isotherm showed a better data correlation than the Freundlich model. Cr(VI) in solution was removed by electrostatic interaction between the pyridine group and Cr(VI) and the confinement effect from micropores.
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Affiliation(s)
- Xiao Dan Sun
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
- National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, China
- Xi'an Key Laboratory of Green Chemicals and Functional Materials, Xi'an 710021, China
| | - Jingjing Song
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
- National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Zhangxin Duan
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
- National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Dawei Feng
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
- National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Zhenhua Tian
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
- National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, China
- Xi'an Key Laboratory of Green Chemicals and Functional Materials, Xi'an 710021, China
| | - Dangge Gao
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
- National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, China
- Xi'an Key Laboratory of Green Chemicals and Functional Materials, Xi'an 710021, China
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Fang L, Zeng J, Wang H, He F, Wan H, Li M, Ren W, Ding L, Yang L, Luo X. Insights into the proton-enhanced mechanism of hexavalent chromium removal by amine polymers in strong acid wastewater: Reduction of hexavalent chromium and sequestration of trivalent chromium. J Colloid Interface Sci 2023; 650:515-525. [PMID: 37421754 DOI: 10.1016/j.jcis.2023.06.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/17/2023] [Accepted: 06/30/2023] [Indexed: 07/10/2023]
Abstract
Adsorption is a green technology of treating heavy metal-contaminated strong acid wastewaters for the recycling of heavy metal and reuse of strong acid. Herein, three amine polymers (APs) with different alkalinities and electron donating abilities were prepared to investigate the adsorption-reduction processes of Cr(VI). It was found that the removal of Cr(VI) was controlled by the concentration of -NRH+ on the surface of APs at pH > 2, which relies on the alkalinity of APs. However, the high concentration of NRH+ significantly facilitated the adsorption of Cr(VI) on the surface of APs and accelerated the mass transfer between Cr(VI) and APs at strong acid environment (pH ≤ 2). More importantly, the reduction of Cr(VI) was enhanced at pH ≤ 2, due to the high reduction potential of Cr(VI) (E ≥ 0.437). The ratio of reduction to adsorption (α) of Cr(VI) was above 0.70, and the proportion of Cr(III) bonding on Ph-AP excessed 67.6 %. Finally, a proton-enhanced mechanism of Cr(VI) removal was verified by analyzing FTIR and XPS spectra as well as constructing DFT model. This study provides a theoretical basis for the removal of Cr(VI) in the strong acid wastewater.
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Affiliation(s)
- Lili Fang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China; College of Chemistry, Nanchang University, Nanchang 330031, PR China
| | - Jinwen Zeng
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Huiling Wang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Fan He
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Huiqin Wan
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Mengling Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Wei Ren
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China.
| | - Lin Ding
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Liming Yang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Xubiao Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China; College of Chemistry, Nanchang University, Nanchang 330031, PR China; School of Life Science, Jinggangshan University, Ji'an 343009, PR China.
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8
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Ma C, Liu M, Yang Z, Zheng Q, Mei J, Yang S. Highly efficient Cr (VI) removal from electroplating wastewater by regenerable copper sulfides: Mechanism and magical induction effect for Cr resource recovery. ENVIRONMENTAL RESEARCH 2023; 236:116799. [PMID: 37524156 DOI: 10.1016/j.envres.2023.116799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/25/2023] [Accepted: 07/29/2023] [Indexed: 08/02/2023]
Abstract
The current sorbents used to remove Cr (VI) from electroplating wastewater are faced with some challenges including the difficulty in separating, regenerating, and safely disposing of adsorbed Cr species. To address these challenges, CuSx/TiO2 was developed to recover Cr (VI) from electroplating wastewater. CuSx/TiO2 had superior performance in removing Cr (VI), with the rate and capacity of approximately 9.36 mg g-1 h-1 and 68.8 mg g-1 at initial pH 4.0, respectively. Additionally, Cu2+ released from CuSx/TiO2 during Cr (VI) removal would come back to its external surface as the Cu(OH)2 precipitate at initial pH 4.0, which helped to prevent the generation of secondary pollution. The Cu(OH)2 precipitate would be decomposed into CuOx after calcination, which would then be transformed back into CuSx by re-sulfuration for regeneration. Hence, CuSx showed a magical induction effect on Cr (VI) recovery, and Cr (VI) from electroplating wastewater might be gradually enriched as Cr2O3 in the sandwich between CuSx and TiO2 through multiple regenerations and removals, which could be considered as a chromium ore resource for industrial applications when the amount of enriched Cr2O3 reached more than 30 wt%. Overall, CuSx/TiO2 showed great potential as a promising sorbent for Cr (VI) removal from electroplating wastewater.
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Affiliation(s)
- Chen Ma
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Mengle Liu
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Zichen Yang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Qianxian Zheng
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Jian Mei
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China.
| | - Shijian Yang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China
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Zhang X, Li Y, Zou W, Ding L, Chen J. Sorption enhancement of Cr(VI) from aqueous solution by polyaniline confined in three-dimensional network of composite porous hydrogel. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:92404-92416. [PMID: 37491493 DOI: 10.1007/s11356-023-28948-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 07/19/2023] [Indexed: 07/27/2023]
Abstract
Hexavalent chromium Cr(VI) is a typical harmful pollutant, which is carcinogenic or mutagenic to aquatic animals and humans. In this study, sepiolite/humic acid/polyvinyl alcohol@ polyaniline (SC/HA/PVA@PANI) composite porous hydrogel adsorbent was synthesized by Pickering emulsion template in situ chemical oxidative polymerization for adsorption of Cr(VI) from aqueous solution. The in situ polymerization of aniline at the Pickering emulsion interface and the unique three-dimensional network structure of the hydrogel act as an effective "confinement" for the growth of the polymer. The porous structure of the material acts as a water channel, which effectively accelerates the binding of the adsorbate to the adsorption sites, and significantly improves the adsorption rate and adsorption capacity. The adsorption capacity of PANI for Cr(VI) confined in three-dimensional network of composite porous SC/HA/PVA@PANI hydrogel reached 1180.97 mg/g-PANI, which increased about 27-fold compared the adsorption capacity of pure PANI (43.48 mg/g). It is shown that the experimental design effectively avoids the agglomeration of PANI and improves its potential adsorption performance. In addition, the analysis of FESEM-EDX, FT-IR, and XPS spectra before and after adsorption confirmed that the main adsorption mechanisms of Cr(VI) on SC/HA/PVA@PANI included ion exchange, electrostatic attraction, and redox reaction. In conclusion, SC/HA/PVA@PANI has good stability and excellent adsorption performance, which is a new type of Cr(VI) ion adsorbent with great potential.
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Affiliation(s)
- Xuejiao Zhang
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Ma Xiang road, Maanshan, 243000, People's Republic of China
| | - Yulin Li
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Ma Xiang road, Maanshan, 243000, People's Republic of China
| | - Wenjie Zou
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Ma Xiang road, Maanshan, 243000, People's Republic of China
| | - Li Ding
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Ma Xiang road, Maanshan, 243000, People's Republic of China
| | - Jun Chen
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Ma Xiang road, Maanshan, 243000, People's Republic of China.
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10
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Zhen H, Yan X, Chen C, Liu H, Yang X, Su Y, Yang L, Wang X, Zhang Z. Removal of Fe(III)/Al(III)/Mg(II) by phosphonic group functionalized resin in wet-process phosphoric acid: Mechanism and intrinsic selectivity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27600-2. [PMID: 37209342 DOI: 10.1007/s11356-023-27600-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 05/09/2023] [Indexed: 05/22/2023]
Abstract
The removal of iron ions (Fe(III)), aluminum ions (Al(III)), and magnesium ions (Mg(II)) in phosphoric acid (H3PO4) solution is vital for the production of H3PO4 and supply of phosphate fertilizer. However, the mechanism and intrinsic selectivity for removal of Fe(III), Al(III), and Mg(II) from wet-process phosphoric acid (WPA) by phosphonic group (-PO3H2) functionalized MTS9500 are still unclear. In this work, the removal mechanisms were determined via combined analysis of FT-IR, XPS, molecular dynamics (MD), and quantum chemistry (QC) simulations based on density functional theory (DFT). The metal-removal kinetics and isotherms were further studied to confirm the removal mechanisms. The results indicate that Fe(III), Al(III), and Mg(II) interact with the -PO3H2 functional groups in MTS9500 resin with sorption energies of -126.22 kJ·mol-1, -42.82 kJ·mol-1, and -12.94 kJ·mol-1, respectively. Moreover, the intrinsic selectivities of the resin for Fe(III), Al(III), and Mg(II) removal were quantified by the selectivity coefficient (Si/j). The SFe(III)/Al(III), SFe(III)/Mg(II) and SAl(III)/Mg(II) are 18.2, 55.1 and 3.02, respectively. This work replenishes sorption theory that can be used in the recycling of electronic waste treatment acid, sewage treatments, hydrometallurgy, and purification of WPA in industry.
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Affiliation(s)
- Honggang Zhen
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Xuefang Yan
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Chaojiu Chen
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Haozhou Liu
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Xiuying Yang
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Yingli Su
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Lin Yang
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China.
| | - Xinlong Wang
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Zhiye Zhang
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
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11
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Fang L, Tang K, Wei D, Zhang Y, Zhou Y. Photocatalytic degradation of norfloxacin by magnetic molecularly imprinted polymers: influencing factors and mechanisms. ENVIRONMENTAL TECHNOLOGY 2023; 44:1438-1449. [PMID: 34738505 DOI: 10.1080/09593330.2021.2003442] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 10/30/2021] [Indexed: 06/13/2023]
Abstract
Novel magnetic molecularly imprinted polymers (MMIP) were prepared for selective removal of norfloxacin by effectively utilizing photocatalytic degradation and magnetic separation techniques. The imprinted material with titanium layer and multihole surface showed an excellent photocatalytic property. In this paper, the kinetics of photocatalytic degradation of norfloxacin by MMIP was explored, and the influences of environmental factors, including solution pH, humic acid, common ions and water media on photocatalytic performance of MMIP were elucidated. The results showed that MMIP had good adaptability and could degrade norfloxacin within 60 min, but the degradation rate constant decreased in surface water. Based on the identification of intermediate products, the possible degradation pathways of norfloxacin were analysed, speculating that it might be degraded into small molecules in the form of de-piperazine ring, de-carboxyl group and de-fluorine. Moreover, the mineralization ratio of norfloxacin could reach 84.2% after ultraviolet irradiation for 150 min, and the low cobalt release of MMIP enhanced the security of the material. The results of adsorption and degradation cycle tests showed that MMIP obtained by molecular imprinting technology had excellent performance in sustainable use for micro organic pollutants removal.
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Affiliation(s)
- Lei Fang
- Key Laboratory of Drinking Water Safety and Distribution Technology of Zhejiang Province, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, People's Republic of China
| | - Kaijie Tang
- Key Laboratory of Drinking Water Safety and Distribution Technology of Zhejiang Province, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, People's Republic of China
| | - Dong Wei
- Key Laboratory of Drinking Water Safety and Distribution Technology of Zhejiang Province, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, People's Republic of China
| | - Yan Zhang
- Key Laboratory of Drinking Water Safety and Distribution Technology of Zhejiang Province, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, People's Republic of China
| | - Yongchao Zhou
- Key Laboratory of Drinking Water Safety and Distribution Technology of Zhejiang Province, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, People's Republic of China
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12
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Li L, Lv Y, Jia C, Yin D, Dong Z, Zhan Z, Han J, Zhang J. Preparation of sludge-cyanobacteria composite carbon for synergistically enhanced co-removal of Cu(II) and Cr(VI). CHEMOSPHERE 2023; 320:138043. [PMID: 36738939 DOI: 10.1016/j.chemosphere.2023.138043] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 01/19/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Traditional sludge disposal is currently restricted by the risk of secondary pollution. Sludge carbon material has gained widespread attention because of its low cost and environmentally sustainable properties. However, owing to the high ash content and low-energy density of sludge, sludge pyrolysis alone has certain limitations, and the performance of carbon materials needs to be improved. Herein, a sludge-cyanobacteria composite carbon (SCC) was easily synthesized, and the adsorption process of Cu(II) and Cr(VI) by SCC was examined. SCC-700-2-50% exhibited a high SBET (1047.54 m2/g) and developed pore structure rich in functional groups (such as -NH, -OH, and C-O). The combination of pore structure and functional groups improved the adsorption performance of SCC. The adsorption processes exhibited a synergistic effect in a binary system: the qm of Cu(II) and Cr(VI) were 386 mg/g and 341 mg/g, respectively, and the selectivity of Cu(II) adsorption by SCC was greater than Cr(VI). The adsorption process, examined by SEM-EDS, FTIR, and XPS analysis, indicated that Cu(II) as a cationic interface strengthens Cr(VI) adsorption through electrostatic interaction, and the anion Cr(VI) created a valid electrostatic shield against the electrostatic repulsion between H+ and Cu(II), facilitating Cu(II) adsorption. SCC had great reusability: Cu(II) and Cr(VI) adsorption capacity were 90% and 84%, of the initial adsorption capacity, respectively, after six cycles. This study demonstrates the prospect of SCC as a valid adsorbent for multiple heavy metal contaminations removal.
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Affiliation(s)
- Lixin Li
- School of Environment and Chemical Engineering, Heilongjiang University of Science and Technology, Harbin, 150022, China.
| | - Ying Lv
- School of Environment and Chemical Engineering, Heilongjiang University of Science and Technology, Harbin, 150022, China
| | - Chao Jia
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Dawei Yin
- College of Agricultural Science, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Zilong Dong
- School of Environment and Chemical Engineering, Heilongjiang University of Science and Technology, Harbin, 150022, China
| | - Zhaoshun Zhan
- School of Environment and Chemical Engineering, Heilongjiang University of Science and Technology, Harbin, 150022, China
| | - Jiazhen Han
- School of Environment and Chemical Engineering, Heilongjiang University of Science and Technology, Harbin, 150022, China
| | - Jun Zhang
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
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13
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Ge J, Tang N, Guo J, Yu M, Zhang Y, Li X, Liang J. Mussel-inspired magnetic adsorbent MnO 2/PDA@Fe 3O 4 for removing heavy metal ions contaminants in single and mixed systems. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:40846-40859. [PMID: 36622594 DOI: 10.1007/s11356-022-25094-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
Heavy metal pollution has been a magnificent concern for a long period. A novel magnetic material, MnO2/PDA@Fe3O4, was prepared in this paper. With the assistance of multiple characterization methods, it was confirmed that polydopamine coated the magnetic nucleus and acted as a dense intermediate layer for MnO2 attachment. Having superior adsorption performance, MnO2/PDA@Fe3O4 could remove heavy metal cations efficiently no matter in single or mixed systems. The maximum adsorption capacities calculated by the Langmuir model for Pb(II), Cu(II), and Cd(II) were 295.01 mg/g, 130.30 mg/g, and 115.16 mg/g, respectively. In mixed systems, the adsorbent showed obvious selectivity for Pb(II). And the variation of Cu(II) concentration was more responsible for Pb(II) adsorption than that of Cd(II). The kinetic and thermodynamic data revealed that the polluted ions immobilizations by MnO2/PDA@Fe3O4 were chemisorption and were endothermic, entropy increase, spontaneous process. The presence of humic acid and coexisting ions induced only a very limited interference. In addition, MnO2/PDA@Fe3O4 maintained excellent adsorption performance and stability after five cycles of adsorption and removed 98.33% Pb(II) and 71.24% Cu(II) from actual water, respectively. This study confirmed that the MnO2/PDA@Fe3O4 had great potential and broad prospects to remediate the heavy metal contaminants in water.
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Affiliation(s)
- Jiangyue Ge
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environment Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
| | - Ning Tang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environment Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
| | - Jiayin Guo
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environment Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
| | - Mengdie Yu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environment Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
| | - Yafei Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environment Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
| | - Xiaodong Li
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environment Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
| | - Jie Liang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China.
- Key Laboratory of Environment Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China.
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14
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Rajput MK, Hazarika R, Sarma D. Removal of As(III)/As(V) from aqueous solution using newly developed thiosalicylic acid coated magnetite [TSA@Fe 3O 4] nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:23348-23362. [PMID: 36322359 DOI: 10.1007/s11356-022-23852-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
The aim of this study was to develop an affordable adsorption methodology for removal of As(III)/As(V) from contaminated water. Herein, novel adsorbent TSA@Fe3O4 nanoparticles (NPs) were synthesized by decorating thiosalicylic acid (TSA) on magnetite nanoparticles (Fe3O4 NPs) and employed for removal of As(III)/As(V) species from artificially contaminated natural water systems. TSA@Fe3O4 NPs demonstrated excellent adsorption efficiency (AE) and 98% of As(V) and 93% of As(III) was removed at optimized experimental conditions. The adsorption kinetic and equilibrium isotherm studies were conducted preferentially for As(III) adsorption. Adsorption followed the pseudo-second-order kinetic (R2 = 99%) and adsorption data fitted well in Langmuir isotherm model (R2 = 99%) and maximum adsorption capacity (Qmax = 34.1 mg/g) was calculated for 5 mg/L of As(III) by using 10 mg of TSA@Fe3O4 NPs. The effect of pH, contact time, adsorption dosages, and competitive anions was also examined to identify optimum experimental conditions. The adsorbent was characterized by advanced instrumental techniques to investigate the physicochemical properties and stability of NPs. To comprehend the interactions of As(III) species with adsorbent NPs, NPs were analyzed using XPS and Raman spectroscopy techniques. Both the techniques confirmed that As(III) and As(V) species present simultaneously on adsorbent surface. The TSA@Fe3O4 was regenerated using 0.1 M NaOH. The findings of this study suggested that TSA@Fe3O4 NPs could be considered a potential adsorbent for effective remediation of As(III) and As(V) from contaminated natural water systems.
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Affiliation(s)
- Mohit Kumar Rajput
- Department of Chemistry, Dibrugarh University, Dibrugarh, 786004, Assam, India
| | - Roktopol Hazarika
- Department of Chemistry, Dibrugarh University, Dibrugarh, 786004, Assam, India
| | - Diganta Sarma
- Department of Chemistry, Dibrugarh University, Dibrugarh, 786004, Assam, India.
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15
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Chromium (VI) reduction by two-chamber bioelectrochemical system with electrically conductive wall. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2022.141738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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16
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Yang K, Wang X, Lynch I, Guo Z, Zhang P, Wu L, Ma J. Design of cryogel based CNTs-anchored polyacrylonitrile honeycomb film with ultra-high S-NZVI incorporation for enhanced synergistic reduction of Cr(VI). JOURNAL OF HAZARDOUS MATERIALS 2023; 442:129923. [PMID: 36206708 DOI: 10.1016/j.jhazmat.2022.129923] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/24/2022] [Accepted: 09/04/2022] [Indexed: 06/16/2023]
Abstract
An ultra-high NZVI-loaded PAN film (S-CPN) with a unique 3D honeycomb structure was designed based on the cryogel method of green solvent-induced pores and confinement of the spatially free conformation of films by anchoring carbon nanotubes (CNTs), supplemented sulfidation for removing hexavalent chromium (Cr(VI)), and characterized by SEM, AFM, BET, XRD, XPS, and electrochemical corrosion. The doping amounts of the compounds for S-CPN synthesis were optimized to be 0.075 g CNTs, 0.25 g Na2S, and 0.3 M FeSO4. S-CPN possessed a 175.247 m2/g specific surface area, -0.365 V reduction potential, and 46.54 mg/g ultra-high NZVI-loading. S-CPN had the strong activity of Cr(VI) removal and tolerance to coexisting ions. The removal efficiency remained at 80 % after age for 30 days or 5 cycles. The pseudo-first-order kinetics and Langmuir model were more favorable to simulate the adsorption of Cr(VI) on S-CPN. The thermodynamics show that S-CPN removing Cr(VI) was a spontaneous exothermic reaction. The reasons for these excellent properties were that CNTs improve the film porosity and ultra-high NZVI-loading, and synergistic the FeSX layer to chelates-reduces Cr(VI). This was the first time that honeycomb film with 3D structure and potential applications in heavy metal removal was developed via an eco-friendly strategy.
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Affiliation(s)
- Kaini Yang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Xiangyu Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China; School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK.
| | - Iseult Lynch
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Zhiling Guo
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Peng Zhang
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Lisi Wu
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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17
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Tan Y, Huang W, Lei Q, Huang S, Yang K, Chen X, Li D. Insight into the adsorption of magnetic microspheres with large mesopores: Tailoring mesoporous structure and ethylenediamine functionalization for ultrahigh Congo red removal. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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18
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Fleming CL, Golzan M, Gunawan C, McGrath KC. Systematic and Bibliometric Analysis of Magnetite Nanoparticles and Their Applications in (Biomedical) Research. GLOBAL CHALLENGES (HOBOKEN, NJ) 2023; 7:2200009. [PMID: 36618105 PMCID: PMC9818080 DOI: 10.1002/gch2.202200009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 08/09/2022] [Indexed: 06/17/2023]
Abstract
Recent reports show air pollutant magnetite nanoparticles (MNPs) in the brains of people with Alzheimer's disease (AD). Considering various field applications of MNPs because of developments in nanotechnology, the aim of this study is to identify major trends and data gaps in research on magnetite to allow for relevant environmental and health risk assessment. Herein, a bibliometric and systematic analysis of the published magnetite literature (n = 31 567) between 1990 to 2020 is completed. Following appraisal, publications (n = 244) are grouped into four time periods with the main research theme identified for each as 1990-1997 "oxides," 1998-2005 "ferric oxide," 2006-2013 "pathology," and 2014-2020 "animal model." Magnetite formation and catalytic activity dominate the first two time periods, with the last two focusing on the exploitation of nanoparticle engineering. Japan and China have the highest number of citations for articles published. Longitudinal analysis indicates that magnetite research for the past 30 years shifted from environmental and industrial applications, to biomedical and its potential toxic effects. Therefore, whilst this study presents the research profile of different countries, the development in research on MNPs, it also reveals that further studies on the effects of MNPs on human health is much needed.
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Affiliation(s)
- Charlotte L. Fleming
- School of Life SciencesFaculty of ScienceUniversity of Technology SydneySydneyNSW2008Australia
| | - Mojtaba Golzan
- Vision Science GroupGraduate School of HealthUniversity of Technology SydneySydneyNSW2008Australia
| | - Cindy Gunawan
- Australian Institute for Microbiology and InfectionUniversity of Technology SydneySydneyNSW2008Australia
| | - Kristine C. McGrath
- School of Life SciencesFaculty of ScienceUniversity of Technology SydneySydneyNSW2008Australia
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19
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A cyclophosphazene-derived porous organic polymer with P-N linkage for environmental adsorption applications. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Luo Y, Hu Z, Lei X, Wang Y, Guo X. Fluorescent magnetic chitosan-based hydrogel incorporating Amino-Functionalized Fe3O4 and cellulose nanofibers modified with carbon dots for adsorption and detection of Cr (VI). Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130673] [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]
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21
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Lu Y, Miao M, Wong NH, Sunarso J, Li N. Structure regulation of PVDF/magnetic attapulgite composite membrane for separating water vapor from air. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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22
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Zr4+ cross-linked chitosan-thiourea composite for efficient detoxification of Cr(VI) ions in aqueous solution. Carbohydr Polym 2022; 296:119872. [DOI: 10.1016/j.carbpol.2022.119872] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 07/01/2022] [Accepted: 07/12/2022] [Indexed: 01/04/2023]
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23
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Wang J, Liu Y, Yin W, Cao Y, Hou J, Wang S, Wang X. Solvent-induced facile synthesis of MnFe2O4 and the As(V) removal mechanism study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Qi J, Zeng M, Zhu Z, Zhou Y, Sun X, Li J. Polyacrylonitrile/Aminated Polymeric Nanosphere Nanofibers as Efficient Adsorbents for Cr(VI) Removal. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27207133. [PMID: 36296725 PMCID: PMC9611933 DOI: 10.3390/molecules27207133] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/17/2022] [Accepted: 10/20/2022] [Indexed: 11/05/2022]
Abstract
In this work, polyacrylonitrile/aminated polymeric nanosphere (PAN/APN) nanofibers were prepared by electrospinning of monodispersed aminated polymeric nanospheres (APNs) for removal of Cr(VI) from aqueous solution. Characterization results showed that obtained PAN/APNs possessed nitrogen functionalization. Furthermore, the adsorption application results indicated that PAN/APN nanofibers exhibited a high adsorption capacity of 556 mg/g at 298 K for Cr(VI) removal. The kinetic data showed that the adsorption process fits the pseudo-second order. A thermodynamic study revealed that the adsorption of Cr(VI) was spontaneous and endothermic. The coexisting ions Na+, Ca2+, K+, Cl−, NO3− and PO43− had little influence on Cr(VI) adsorption, while SO42− in solution dramatically decreased the removal performance. In the investigation of the removal mechanism, relative results indicated that the adsorption behavior possibly involved electrostatic adsorption, redox reaction and chelation. PAN/APN nanofibers can detoxify Cr(VI) to Cr(III) and subsequently chelate Cr(III) on its surface. The unique structure and nitrogen functionalization of PAN/APN nanofibers make them novel and prospective candidates in heavy metal removal.
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25
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Xu R, Li Q, Liao L, Wu Z, Yin Z, Yang Y, Jiang T. Simultaneous and efficient removal of multiple heavy metal(loid)s from aqueous solutions using Fe/Mn (hydr)oxide and phosphate mineral composites synthesized by regulating the proportion of Fe(II), Fe(III), Mn(II) and PO 43. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129481. [PMID: 35803195 DOI: 10.1016/j.jhazmat.2022.129481] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/16/2022] [Accepted: 06/25/2022] [Indexed: 06/15/2023]
Abstract
In this work, a novel adsorbent FMPs consisting of Fe/Mn (hydr)oxides and phosphate minerals was synthesized by regulating the proportion of Fe(II), Fe(III), Mn(II) and PO43-, and its removal behaviors and possible mechanisms for Cd(II), Pb(II), Cu(II), Zn(II), As(III), Sb(III), As(V) and Sb(V) were systematically investigated. Batch adsorption experiments revealed that the adsorption process of FMPs to these metal(loid) ions conformed to pseudo-second-order (R2 > 0.99) and Redlich-Peterson (R2 > 0.94) models in the mono-component system, demonstrating a hybrid chemical reaction-adsorption process. In addition, the solution pH and ionic strength could affect the adsorption capacity of FMPs to heavy metal(loid)s with varying degrees. Besides, FMPs presented feasible stability and reusability even after four cycles. Combining the macroscopic and microscopic characteristics, the adsorption mechanisms of FMPs mainly included surface complexation, electrostatic adsorption, inner-sphere complexation, hydrogen bonding, redox and pore-filling. In a multi-component system, FMPs exhibited an excellent affinity for capturing Pb(II) and Sb(III/V). This work provides an alternative method for designing and developing a series of novel adsorbent in removing multiple heavy metal(loid)s from wastewater, and demonstrated its application prospect in the remediation of multi-metal(loid) composite polluted water.
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Affiliation(s)
- Rui Xu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, PR China
| | - Qian Li
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, PR China.
| | - Lang Liao
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, PR China
| | - Zhenguo Wu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, PR China
| | - Zhe Yin
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, PR China
| | - Yongbin Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, PR China
| | - Tao Jiang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, PR China
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Kinetics and Mechanisms of Cr(VI) Removal by nZVI: Influencing Parameters and Modification. Catalysts 2022. [DOI: 10.3390/catal12090999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this study, single-spherical nanoscale zero valent iron (nZVI) particles with large specific sur-face area were successfully synthesized by a simple and rapid chemical reduction method. The XRD spectra and SEM–EDS images showed that the synthesized nZVI had excellent crystal struc-ture, but oxidation products, such as γ-Fe2O3 and Fe3O4, were formed on the surface of the parti-cles. The effect of different factors on the removal of Cr(VI) by nZVI were studied, and the opti-mum experimental conditions were found. Kinetic and thermodynamic equations at different temperatures showed that the removal of Cr(VI) by nZVI was a single-layer chemical adsorption, conforming to pseudo-second-order kinetics. By applying the intraparticle diffusion model, the ad-sorption process was composed of three stages, namely rapid diffusion, chemical reduction, and in-ternal saturation. Mechanism analysis demonstrated that the removal of Cr(VI) by nZVI in-volved adsorption, reduction, precipitation and coprecipitation. Meanwhile, Cr(VI) was reduced to Cr(III) by nZVI, while FeCr2O4, CrxFe1−xOOH, and CrxFe1−x(OH)3 were formed as end products. In addition, the study found that ascorbic acid, starch, and Cu modified nZVI can promote the removal efficiency of Cr(VI) in varying degrees due to the enhanced mobility of the particles. These results can provide new insights into the removal mechanisms of Cr(VI) by nZVI.
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27
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Li M, Tang C, Fu S, Tam KC, Zong Y. Cellulose-based aerogel beads for efficient adsorption-reduction-sequestration of Cr(VI). Int J Biol Macromol 2022; 216:860-870. [PMID: 35914552 DOI: 10.1016/j.ijbiomac.2022.07.215] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/20/2022] [Accepted: 07/26/2022] [Indexed: 11/16/2022]
Abstract
The reduction and sequestration of toxic Cr(VI) via a one-step process in an aqueous solution is critical to eliminate its environmental risk. In this study, amine functionalized cellulose-based aerogel beads (CGP) was developed for simultaneous and efficient adsorption- reduction- sequestration of Cr(VI). CGP showed a maximum Cr(VI) adsorption capacity of 386.40 mg/g at 25 °C due to its strong electrostatic attraction towards Cr(VI). The simultaneous Cr(VI) adsorption- reduction- sequestration performance of CGP over a wide Cr(VI) concentration range was examined. The mechanism was investigated in-depth via the analysis of adsorption kinetics, XPS spectra, and FTIR spectra. Moreover, the Cr immobilization stability of CGP after adsorption was evaluated in simulated neutral, acidic, and alkaline conditions. The effect of pH, temperature, ionic strength and the presence of interfering ions on CGP adsorption performance were investigated by batch adsorption experiments. Fixed-bed column adsorption study was performed to explore the application potential of CGP beads in a wastewater treatment process.
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Affiliation(s)
- Meng Li
- Key Laboratory of Eco-Textile, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Chunxia Tang
- Key Laboratory of Eco-Textile, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China.
| | - Shaohai Fu
- Key Laboratory of Eco-Textile, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China.
| | - Kam Chiu Tam
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue, Waterloo, Ontario N2L 3G1, Canada.
| | - Yongzhong Zong
- Kunming South Water Co. Ltd, 310 Linxi Road, Kunming, Yunnan 650217, China
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28
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Zhang X, Li H, Ye M, Zhang H, Wang G, Zhang Y. Bacterial cellulose hybrid membrane grafted with high ratio of adipic dihydrazide for highly efficient and selective recovery of gold from e-waste. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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29
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Yue XH, Zhang FS, Zhang CC, Qian P. Upcycling of blending waste plastics as zwitterionic hydrogel for simultaneous removal of cationic and anionic heavy metals from aqueous system. JOURNAL OF HAZARDOUS MATERIALS 2022; 432:128746. [PMID: 35339831 DOI: 10.1016/j.jhazmat.2022.128746] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/27/2022] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
Upcycling of waste plastics as functional materials is a new approach for synthesizing low-cost and durable adsorbents with zwitterionic property. Herein, a facile process for recycling blending waste plastics to fabricate zwitterionic plastic-g-hydrogel (ZPH) for simultaneous adsorbing cationic and anionic heavy metals was developed. ZPH possessed high affinities for cations and anions in both acid and alkaline conditions owing to its zwitterionic property, and the maximum adsorption capacities of Pb2+, Cd2+, Ba2+, and Cr(VI) (Cr2O72-) were 132.13, 85.58, 69.92 and 85.15 mg/g, respectively. Mechanism study indicated the incompatibility of blending plastics was skillfully overcome through the crosslinking between sodium alginate (SA)/chitosan (CTS) and plastics. Cations were adsorbed onto ZPH via electrostatic interaction, cation exchange and coordination interactions with Cl/N/O-containing groups. Furthermore, the reduction of Cr(VI) to Cr(III) was another important path for ZPH to capture anionic Cr2O72-, and subsequently Cr(III) was adsorbed via coordination interaction and cation exchange. Moreover, the regeneration experiment showed ZPH possessed excellent reusability and stable structure. Accordingly, this research provides a profitable approach for recycling blending plastics, and ZPH has potentials for industrial application in wastewater treatment or contaminated site remediation with complex heavy metals pollution.
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Affiliation(s)
- Xiao-Hui Yue
- Department of Solid Waste Treatment and Recycling, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fu-Shen Zhang
- Department of Solid Waste Treatment and Recycling, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing 100190, China.
| | - Cong-Cong Zhang
- Department of Solid Waste Treatment and Recycling, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Peng Qian
- Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing 100190, China
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30
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Zhu Y, Wei J, Li J. Decontamination of Cr(VI) from water using sewage sludge-derived biochar: Role of environmentally persistent free radicals. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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31
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Tran CC, Dong HC, Truong VTN, Bui TTM, Nguyen HN, Nguyen TAT, Dang NN, Nguyen MV. Enhancing the remarkable adsorption of Pb 2+ in a series of sulfonic-functionalized Zr-based MOFs: a combined theoretical and experimental study for elucidating the adsorption mechanism. Dalton Trans 2022; 51:7503-7516. [PMID: 35506481 DOI: 10.1039/d2dt01009g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A series of Zr-based metal-organic frameworks was prepared via the solvothermal route using sulfonic-rich linkers for the efficient capture of Pb2+ ions from aqueous medium. The factors affecting adsorption such as the solution pH, adsorbent dosage, contact time, adsorption isotherms, and mechanism were studied. Consequently, the maximum adsorption capacity of Pb2+ on the acidified VNU-23 was determined to be 617.3 mg g-1, which is much higher than that of previously reported adsorbents and MOF materials. Furthermore, the adsorption isotherms and kinetics of the Pb2+ ion are in good accordance with the Langmuir and pseudo-second-order kinetic model, suggesting that the uptake of Pb2+ is a chemisorption process. The reusability experiments demonstrated the facile recovery of the H+⊂VNU-23 material through immersion in an HNO3 solution (pH = 3), where its Pb2+ adsorption efficiency still remained at about 90% of the initial uptake over seven cycles. Remarkably, the adsorption mechanism was elucidated through a combined theoretical and experimental investigation. Accordingly, the Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, scanning electron microscopy connected to energy-dispersive X-ray mapping (SEM-EDX-mapping), and X-ray photoelectron spectroscopy (XPS) analysis of the Pb⊂VNU-23 sample and comparison with H+⊂VNU-23 confirmed that the electrostatic interaction occurs via the interaction between the SO3- moieties in the framework and the Pb2+ ion, leading to the formation of a Pb-O bond. In addition, the density functional theory (DFT) calculations showed the effective affinity of the MOF adsorbent toward the Pb2+ ion via the strong driving force mentioned in the experimental studies. Thus, these findings illustrate that H+⊂VNU-23 can be employed as a potential adsorbent to eliminate Pb2+ ions from wastewater.
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Affiliation(s)
- Cuong C Tran
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam.
| | - Hieu C Dong
- Future Materials and Devices Laboratory, Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Vietnam.,Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Vietnam
| | - Vy T N Truong
- Royal Melbourne Institute of Technology (RMIT) University, Ho Chi Minh City 700000, Vietnam
| | - Thinh T M Bui
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam.
| | - Hung N Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam.
| | - Tuyet A T Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam.
| | - Nam N Dang
- Future Materials and Devices Laboratory, Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Vietnam.,Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Vietnam
| | - My V Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam.
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Huang W, Xu H, Liu X, Wang L, Li S, Ji L, Qu Z, Yan N. Surface protection method for the magnetic core using covalent organic framework shells and its application in As(III) depth removal from acid wastewater. J Environ Sci (China) 2022; 115:1-9. [PMID: 34969439 DOI: 10.1016/j.jes.2021.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/10/2021] [Accepted: 07/15/2021] [Indexed: 06/14/2023]
Abstract
Fe3O4-based materials are widely used for magnetic separation from wastewater. However, they often suffer from Fe-leaching behavior under acidic conditions, decreasing their activity and limiting sustainable practical applications. In this study, covalent organic frameworks (COFs) were used as the shell to protect the Fe3O4 core, and the Fe3O4@COF core-shell composites were synthesized for As(III) removal from acid wastewater. The imine-linked COFs can in situ grow on the surface of the Fe3O4 core layer by layer with [COFs/Fe3O4]mol ratio of up to 2:1. The Fe-leaching behavior was weakened over a wide pH range of 1-13. Moreover, such composites keep their magnetic characteristic, making them favorable for nanomaterial separation. As(III) batch adsorption experiments results indicated that, when COFs are used as the shell for the Fe3O4 core, a balance between As(III) removal efficiencies and the thickness of the COF shell exists. Higher As(III) removal efficiencies are obtained when the [COFs/Fe3O4]mol ratios were < 1.5:1, but thicker COF shells were not beneficial for As(III) removal. Such composites also exhibited better As(III) removal performances in the pH range of 1-7. Over a wide pH range, the zeta potential of Fe3O4@COF core-shell composites becomes more positive, which benefits the capture of negative arsenic ions. In addition, thinner surface COFs were favorable for mass transfer and facilitating the reaction of Fe and As elements. Our study highlights the promise of using COFs in nanomaterial surface protection and achieving As(III) depth removal under acidic conditions.
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Affiliation(s)
- Wenjun Huang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Haomiao Xu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaoshuang Liu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Longlong Wang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shutang Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Leipeng Ji
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zan Qu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Naiqiang Yan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
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Wang RD, He L, Zhu RR, Jia M, Zhou S, Tang J, Zhang WQ, Du L, Zhao QH. Highly efficient and selective capture Pb(II) through a novel metal-organic framework containing bifunctional groups. JOURNAL OF HAZARDOUS MATERIALS 2022; 427:127852. [PMID: 34838355 DOI: 10.1016/j.jhazmat.2021.127852] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/10/2021] [Accepted: 11/17/2021] [Indexed: 05/25/2023]
Abstract
The design and development of materials with a selective adsorption capacity for Pb(II) are very important for environmental governance and ecological safety. In this work, a novel 3D metal-organic framework ([Cd2H4L4Cl2SO4]·4H2O, Cd-MOF) is constructed using a multiple pyrazole heterocycles tetraphenylethylene-based ligand (H4L4) and CdSO4 which containing Pb(II) adsorption sites (SO42-). Studies have shown that the Cd-MOF has outstanding stability, and its maximum adsorption value of Pb(II) can be as high as 845.55 mg/g, which is higher than that of most MOFs or MOFs modified materials. It is worth emphasizing that the Cd-MOF have excellent recyclability due to the unique adsorption mechanism of the Cd-MOF. Thermodynamic studies have shown that Pb(II) adsorption of the Cd-MOF is a spontaneous endothermic process. Specific selective adsorption, exceptional stability and remarkable recyclability make the Cd-MOF a potential material for industrial capture and recovery of Pb(II) from water.
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Affiliation(s)
- Rui-Dong Wang
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Liancheng He
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Rong-Rong Zhu
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Mingxuan Jia
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Sihan Zhou
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Jinsheng Tang
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Wen-Qian Zhang
- College of Pharmaceutical Engineering, Xinyang Agricultural and Forestry University, Henan 464000, People's Republic of China
| | - Lin Du
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China; Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, Yunnan University, Kunming 650091, People's Republic of China.
| | - Qi-Hua Zhao
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China; Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, Yunnan University, Kunming 650091, People's Republic of China.
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34
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Sun H, Hua Y, Zhao Y. Synchronous Efficient Reduction of Cr (VI) and Removal of Total Chromium by Corn Extract / Fe (III) System. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:28552-28564. [PMID: 34989997 DOI: 10.1007/s11356-021-18234-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
In this study, a cost-effective and environmentally friendly composite system for the remediation of Cr (VI)-polluted groundwater was developed. The system of simultaneous reduction of Cr (VI) and precipitation of Cr (III) was innovatively constructed, using corncob extract as electron donor and Fe (III) as strengthening reagent. In the process of the total chromium removal, the addition of alkaline substances was not required, when pH ≤ 4 it showed an optimal reduction of Cr (VI). In addition, the removal rate of total chromium reached 88% within 120 min. To understand the mechanism of this system, we characterized the corn extract and particulate matter before and after the reaction. Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry suggested that alcohols, phenols, and aldehydes provided the electrons that were required to reduce Cr (VI). As an electron shuttle, Fe (III) improved the efficiency of electron transfer, and Fe (II) and nano-zerovalent iron (nZVI) particles were formed during this process. X-ray diffraction and transmission electron microscopy analyses showed that FeOCl was formed under the action of the plant extract and adsorbed Cr (III), thus reducing total chromium. Both nZVI and FeOCl were covered with a layer of paste cap, which maintained the stability of their physical and chemical properties. The regulation of pH during the repair process was not required, and the cost of the process was significantly reduced. Therefore, this technology provides a new strategy for the in situ remediation of Cr (VI) pollution in groundwater.
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Affiliation(s)
- He Sun
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of Environment and Resources, Jilin University, 2519 Jiefang Road, Changchun, 130021, China
- National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China
| | - Yuduo Hua
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of Environment and Resources, Jilin University, 2519 Jiefang Road, Changchun, 130021, China
- National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China
| | - Yongsheng Zhao
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of Environment and Resources, Jilin University, 2519 Jiefang Road, Changchun, 130021, China.
- National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China.
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Enhanced performance for total Cr removal using a novel h-BN supported nanoscale iron sulfide composite: stabilization effects and removal mechanism. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Rajapaksha AU, Selvasembian R, Ashiq A, Gunarathne V, Ekanayake A, Perera VO, Wijesekera H, Mia S, Ahmad M, Vithanage M, Ok YS. A systematic review on adsorptive removal of hexavalent chromium from aqueous solutions: Recent advances. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 809:152055. [PMID: 34871684 DOI: 10.1016/j.scitotenv.2021.152055] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 11/02/2021] [Accepted: 11/25/2021] [Indexed: 05/26/2023]
Abstract
The contamination of natural resources by hexavalent chromium (Cr(VI)) originating from natural and anthropogenic activities is a serious environmental concern. Although many articles on chromium remediation have been published, a comprehensive understanding of the mechanisms involved in remediation with different sorbents is not yet available. In this systematic review, the performance and applicability of several adsorptive materials for Cr(VI) removal from aqueous media are discussed, along with a detailed analysis of the mechanisms involved. Statistical analysis is applied to compare the efficacies of different adsorbents, while a similar approach is used to determine the effects of sorbent properties and experimental conditions on the adsorption capacity. A detailed analysis of the factors involved in fixed-bed column studies is also presented. A suitable desorption approach to the regeneration of the spent adsorbent and its adsorption performance in reuse is also examined. Among the different sorbents, nanoparticles and mineral-doped biochar were found to be the most effective sorbents, while the adsorption was higher at low pH (~4.0) than that at intermediate pH (6-8). Contrary to our expectation, adsorption was high for sorbents with low specific surface areas, suggesting that the adsorption of Cr(VI) is largely influenced by the chemical properties of the sorbents. The optimum adsorption in fixed-bed column systems is obtained at a lower Cr(VI) ion concentration, a lower influent flow rate, and a higher bed height. Since most of the studies reviewed herein were merely experimental and utilized ideal conditions with the presence of a single contaminant, i.e. Cr(VI) in water, further studies on adsorption dynamics with the presence of other interfering ions are suggested. This review is promising for the further development of Cr(VI) removal strategies and closes the research gaps pertaining to their challenges.
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Affiliation(s)
- Anushka Upamali Rajapaksha
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka; Instrument Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
| | - Rangabhashiyam Selvasembian
- Department of Biotechnology, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613401, India
| | - Ahamed Ashiq
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka; Hydrometallurgy and Environment Laboratory, Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario K7L 3N6, Canada
| | - Viraj Gunarathne
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka; University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany
| | - Anusha Ekanayake
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - V O Perera
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - Hasintha Wijesekera
- Department of Natural Resources, Sabaragamuwa University of Sri Lanka, Belihuloya, Sri Lanka
| | - Shamin Mia
- Department of Agronomy, Patuakhali Science and Technology, University of Patuakhali, Bangladesh
| | - Mahtab Ahmad
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, 45320, Pakistan
| | - Meththika Vithanage
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - Yong Sik Ok
- Korea Biochar Research Center & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea.
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Facile Synthesis of Magnetic Biochar Derived from Burley Tobacco Stems towards Enhanced Cr (VI) Removal: Performance and Mechanism. NANOMATERIALS 2022; 12:nano12040678. [PMID: 35215006 PMCID: PMC8878553 DOI: 10.3390/nano12040678] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/09/2022] [Accepted: 02/09/2022] [Indexed: 01/27/2023]
Abstract
In this study, ferric-loaded magnetic burley tobacco stem biochar (MBTS) was synthesized via pyrolysis to improve the removal of Cr(VI). The results showed that MBTS had an adsorption capacity of 54.92 mg Cr(VI)/g, which was about 14 times higher than raw burley tobacco stem biochar (i.e., 3.84 mg/g). According to the findings obtained, a three-step mechanism of Cr(VI) removal by MBTS was further put forward, i.e., (1) Cr(VI) exchanged with hydroxyl groups on MBTS, (2) the reduction in Cr(VI) to Cr(III) mediated by oxygen-containing groups, and (3) the chelation of produced Cr(III) with the amino groups on MBTS. FTIR spectra further revealed that C-N, C-H, and C=C groups played an important role in Cr(VI) removal. Furthermore, the adsorption equilibrium and kinetics of Cr(VI) on MBTS could better be described by the Langmuir equation and pseudo-second-order rate equation. This study clearly demonstrated that ferric-loaded biochar derived from burley tobacco stems could serve as a cost-effective magnetic adsorbent for the high-efficiency removal of soluble Cr(VI) from wastewater. Tobacco stem-adsorbed Cr(VI) realized a green path for treating waste by waste.
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38
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Xiao Z, Zhang L, Colvin VL, Zhang Q, Bao G. Synthesis and Application of Magnetic Nanocrystal Clusters. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04879] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhen Xiao
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Linlin Zhang
- Department of Bioengineering, Rice University, Houston, Texas 77005, United States
| | - Vicki L. Colvin
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Qingbo Zhang
- Department of Bioengineering, Rice University, Houston, Texas 77005, United States
| | - Gang Bao
- Department of Bioengineering, Rice University, Houston, Texas 77005, United States
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39
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Liu B, Lu H, Wu S, Wang Z, Feng L, Zheng H. Octopus tentacle-like molecular chains in magnetic flocculant enhances the removal of Cu(II) and malachite green in water. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Anthony ET, Oladoja NA. Process enhancing strategies for the reduction of Cr(VI) to Cr(III) via photocatalytic pathway. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:8026-8053. [PMID: 34837612 DOI: 10.1007/s11356-021-17614-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 11/13/2021] [Indexed: 06/13/2023]
Abstract
This discourse aimed at providing insight into the strategies that can be adopted to boost the process of photoreduction of Cr(VI) to Cr(III). Cr(VI) is amongst the highly detestable pollutants; thus, its removal or reduction to an innocuous and more tolerable Cr(III) has been the focus. The high promise of photocatalysis hinged on the sustainability, low cost, simplicity, and zero sludge generation. Consequently, the present dissertation provided a comprehensive review of the process enhancement procedures that have been reported for the photoreduction of Cr(VI) to Cr(III). Premised on the findings from experimental studies on Cr(VI) reductions, the factors that enhanced the process were identified, dilated, and interrogated. While the salient reaction conditions for the process optimization include the degree of ionization of reacting medium, available photogenerated electrons, reactor ambience, type of semiconductors, surface area of semiconductor, hole scavengers, quantum efficiency, and competing reactions, the relevant process variables are photocatalyst dosage, initial Cr(VI) concentration, interfering ion, and organic load. In addition, the practicability of photoreduction of Cr(VI) to Cr(III) was explored according to the potential for photocatalyst recovery, reactivation, and reuse reaction conditions and the process variables.
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Affiliation(s)
- Eric Tobechukwu Anthony
- Hydrochemistry Research Laboratory, Department of Chemical Sciences, Adekunle Ajasin University, Akungba Akoko, Nigeria
| | - Nurudeen Abiola Oladoja
- Hydrochemistry Research Laboratory, Department of Chemical Sciences, Adekunle Ajasin University, Akungba Akoko, Nigeria.
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41
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Yang HR, Yang C, Li SS, Shan XC, Song GL, An QD, Zhai SR, Xiao ZY. Site-imprinted hollow composites with integrated functions for ultra-efficient capture of hexavalent chromium from water. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120240] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Phouthavong V, Yan R, Nijpanich S, Hagio T, Ichino R, Kong L, Li L. Magnetic Adsorbents for Wastewater Treatment: Advancements in Their Synthesis Methods. MATERIALS (BASEL, SWITZERLAND) 2022; 15:1053. [PMID: 35160996 PMCID: PMC8838955 DOI: 10.3390/ma15031053] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/20/2022] [Accepted: 01/25/2022] [Indexed: 02/04/2023]
Abstract
The remediation of water streams, polluted by various substances, is important for realizing a sustainable future. Magnetic adsorbents are promising materials for wastewater treatment. Although numerous techniques have been developed for the preparation of magnetic adsorbents, with effective adsorption performance, reviews that focus on the synthesis methods of magnetic adsorbents for wastewater treatment and their material structures have not been reported. In this review, advancements in the synthesis methods of magnetic adsorbents for the removal of substances from water streams has been comprehensively summarized and discussed. Generally, the synthesis methods are categorized into five groups, as follows: direct use of magnetic particles as adsorbents, attachment of pre-prepared adsorbents and pre-prepared magnetic particles, synthesis of magnetic particles on pre-prepared adsorbents, synthesis of adsorbents on preprepared magnetic particles, and co-synthesis of adsorbents and magnetic particles. The main improvements in the advanced methods involved making the conventional synthesis a less energy intensive, more efficient, and simpler process, while maintaining or increasing the adsorption performance. The key challenges, such as the enhancement of the adsorption performance of materials and the design of sophisticated material structures, are discussed as well.
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Affiliation(s)
- Vanpaseuth Phouthavong
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan; (V.P.); (S.N.); (T.H.)
| | - Ruixin Yan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; (R.Y.); (L.L.)
| | - Supinya Nijpanich
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan; (V.P.); (S.N.); (T.H.)
| | - Takeshi Hagio
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan; (V.P.); (S.N.); (T.H.)
- Institute of Materials Innovation, Institutes for Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Ryoichi Ichino
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan; (V.P.); (S.N.); (T.H.)
- Institute of Materials Innovation, Institutes for Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Long Kong
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; (R.Y.); (L.L.)
| | - Liang Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; (R.Y.); (L.L.)
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43
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Rawat M, Taniike T, Rawat DS. Magnetically Separable Fe
3
O
4
@poly(
m‐
phenylenediamine)@Cu
2
O Nanocatalyst for the Facile Synthesis of 5‐phenyl‐[1,2,3]triazolo[1,5‐c]quinazolines. ChemCatChem 2022. [DOI: 10.1002/cctc.202101926] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Manish Rawat
- Department of Chemistry University of Delhi Delhi 110007 India
| | - Toshiaki Taniike
- Graduate School of Advanced Science and Technology Japan Advanced Institute of Science and Technology 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
| | - Diwan S. Rawat
- Department of Chemistry University of Delhi Delhi 110007 India
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Gharemanlo A, Nazarzadeh Zare E, Salimi F, Makvandi P. Electroconductive and photoactive poly(phenylenediamine)s with antioxidant and antimicrobial activities for potential photothermal therapy. NEW J CHEM 2022. [DOI: 10.1039/d1nj06145c] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In recent years, polyaniline derivatives such as poly(phenylenediamine)s have attracted the attention of researchers due to their better solubility, good optical and electrical properties. In the current work, poly(ortho- phenylenediamine)...
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Zhang X, Yang Z, Mei J, Hu Q, Chang S, Hong Q, Yang S. Outstanding performance of sulfurated titanomaghemite (Fe 2TiO 5) for hexavalent chromium removal: Sulfuration promotion mechanism and its application in chromium resource recovery. CHEMOSPHERE 2022; 287:132360. [PMID: 34826960 DOI: 10.1016/j.chemosphere.2021.132360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/11/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
A lot of magnetic sorbents have been developed to meet the current demand for removing Cr (VI) from wastewater. However, the application of magnetic sorbents remains restricted by the unsatisfactory Cr (VI) removal efficiency, sorbent regeneration, and safe disposition of adsorbed Cr species. In this study, magnetic titanomaghemite (Fe2TiO5) was sulfurated with gaseous H2S to improve its Cr (VI) removal efficiency. Sulfuration significantly improved the Cr (VI) removal efficiency of Fe2TiO5 from 3%-14% to 27%-82% at pH 4-10 due to drastically increased the electrostatic adsorption of Cr (VI) and heterogeneous reduction of adsorbed Cr (VI) to Cr (III). Furthermore, the sulfurated Fe2TiO5 recovered using magnetic separation can be regenerated by re-sulfuration without degrading the Cr (VI) removal efficiency, therefore, sulfurated Fe2TiO5 can be recycled for Cr (VI) removal after the regeneration. Moreover, Cr (VI) in aqueous solution can be enriched on sulfurated Fe2TiO5 after multiple adsorptions in the form of Cr2O3 in a content of more than 30% what can be considered as a source of chrome ore. Therefore, sulfurated Fe2TiO5 may be a promising, low-cost, and environment-friendly sorbent for Cr recovery as a co-benefit of Cr (VI) removal from wastewater.
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Affiliation(s)
- Xufan Zhang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Zhenya Yang
- Jiangsu Environmental Engineering Technology Co., Ltd, Nanjing, 210019, PR China
| | - Jian Mei
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China.
| | - Qixing Hu
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Shuai Chang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Qianqian Hong
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Shijian Yang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, PR China.
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Nguyen MV, Nguyen HN, Nguyen TAT, Nguyen KMV. Engineering of appropriate pore size combined with sulfonic functionalization in a Zr-MOF with reo topology for the ultra-high removal of cationic malachite green dye from an aqueous medium. RSC Adv 2022; 12:30201-30212. [DOI: 10.1039/d2ra05787e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022] Open
Abstract
A Zr-based metal–organic framework with reo topology, denoted as Reo-MOF-1, was fabricated through a solvothermal method capable of efficiently removing the cationic MG dye from an aqueous medium.
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Affiliation(s)
- My V. Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam
| | - Hung N. Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam
| | - Tuyet A. T. Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam
| | - Khang M. V. Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam
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Prabakaran E, Pillay K. Self-Assembled Silver Nanoparticles Decorated on Exfoliated Graphitic Carbon Nitride/Carbon Sphere Nanocomposites as a Novel Catalyst for Catalytic Reduction of Cr(VI) to Cr(III) from Wastewater and Reuse for Photocatalytic Applications. ACS OMEGA 2021; 6:35221-35243. [PMID: 34984255 PMCID: PMC8717378 DOI: 10.1021/acsomega.1c00866] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/16/2021] [Indexed: 06/14/2023]
Abstract
Silver nanoparticles decorated on an exfoliated graphitic carbon nitride/carbon sphere (AgNP/Eg-C3N4/CS) nanocomposites were synthesized by an adsorption method with a self-assembled process. These nanoparticles were characterized by different techniques like UV-visible (UV-vis) spectroscopy, photoluminescence (PL) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), thermal gravimetric analysis (TGA), Raman spectroscopy, scanning electron spectroscopy (SEM), transmission electron spectroscopy (TEM), electrochemical impedance spectroscopy (EIS), and ζ potential. AgNP/Eg-C3N4/CS nanocomposites showed a higher catalytic reduction activity for the conversion of Cr(VI) into Cr(III) with formic acid (FA) at 45 °C when compared to bulk graphitic carbon nitride (Bg-C3N4, Eg-C3N4, CS, and Eg-C3N4/CS). The kinetic rate constants were determined as a function of catalyst dosage, concentration of Cr(VI), pH, and temperature for the AgNP/Eg-C3N4/CS nanocomposite. This material showed higher reduction efficiency (98.5%, k = 0.0621 min-1) with turnover frequency (0.0158 min-1) for the reduction of Cr(VI) to Cr(III). It also showed great selectivity and high stability after six repeated cycles (98.5%). Further, the reusability of the Cr(III)-AgNP/Eg-C3N4/CS nanocomposite was also investigated for the photocatalytic degradation of methylene blue (MB) under visible light irradiation with various time intervals and it showed good degradation efficiency (α = 97.95%). From these results, the AgNP/Eg-C3N4/CS nanocomposite demonstrated higher catalytic activity, improved environmental friendliness, lower cost for the conversion of toxic Cr(VI) to Cr(III) in solutions, and also good reusability.
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He T, Chen M, Ding C, Wu Q, Zhang M. Hypothermia Pseudomonas taiwanensis J488 exhibited strong tolerance capacity to high dosages of divalent metal ions during nitrogen removal process. BIORESOURCE TECHNOLOGY 2021; 341:125785. [PMID: 34455248 DOI: 10.1016/j.biortech.2021.125785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
The nitrogen metabolic pathways of Pseudomonas taiwanensis J488 have not been confirmed from genomic function analysis and its divalent metal ion resistance remains poorly understood. In this study, the key denitrifying gene of Pseudomonas taiwanensis J488, nirB, was determined by draft genome sequencing. The nitrification of ammonium was insensitive to high concentrations of Ca(II), Mn(II), Zn(II), and Cd(II). Similarly, complete nitrite removal was achieved despite Mn(II) and Zn(II) reaching concentrations up to 30 mg/L. Furthermore, the efficiency of nitrate removal was significantly enhanced by 1.33%, 3.33%, 5.99%, and 1.53% with the addition of 0.5 mg/L Ca(II), 20 mg/L Mn(II), 5 mg/L Zn(II), and 2 mg/L Cd(II), respectively, comparison with the control. The bacterial growth in both nitrifying and denitrifying processes was substantially promoted by various dosages of divalent metal ions. These results indicate that divalent metal ions would not severely limit the capacity of strain J488 to purify nitrogen-polluted wastewater.
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Affiliation(s)
- Tengxia He
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology Agro-Bioengineering (CICMEAB), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, Guizhou Province, China.
| | - Mengping Chen
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology Agro-Bioengineering (CICMEAB), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Chenyu Ding
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology Agro-Bioengineering (CICMEAB), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Qifeng Wu
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology Agro-Bioengineering (CICMEAB), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Manman Zhang
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology Agro-Bioengineering (CICMEAB), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, Guizhou Province, China
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49
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Xiong Z, Zheng H, Hu Y, Hu X, Ding W, Ma J, Li Y. Selective adsorption of Congo red and Cu(II) from complex wastewater by core-shell structured magnetic carbon@zeolitic imidazolate frameworks-8 nanocomposites. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119053] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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50
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Wang Y, Zhu S, Zheng X, Lu J, Zhao Y, He S, Lu H, Luo Y. Tuning Metal‐Support Interaction and Surface Acidic Sites of Ni/Al
2
O
3
by Dopamine Modification for Glycerol Steam Reforming. ChemCatChem 2021. [DOI: 10.1002/cctc.202101150] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yunzhu Wang
- Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500 P. R China
- The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province Kunming 650500 P. R. China
- The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province Kunming 650500 P. R. China
| | - Songshan Zhu
- Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500 P. R China
- The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province Kunming 650500 P. R. China
- The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province Kunming 650500 P. R. China
| | - Xiangqian Zheng
- Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500 P. R China
- Xishuangbanna Prefecture Comprehensive Testing Center for Quality and technical supervision Jinghong 666100 P. R. China
| | - Jichang Lu
- Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500 P. R China
- The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province Kunming 650500 P. R. China
- The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province Kunming 650500 P. R. China
| | - Yi Zhao
- Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500 P. R China
- The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province Kunming 650500 P. R. China
- The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province Kunming 650500 P. R. China
| | - Sufang He
- Research Center for Analysis and Measurement Kunming University of Science and Technology Kunming 650093 P. R. China
- The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province Kunming 650500 P. R. China
- The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province Kunming 650500 P. R. China
| | - Huihui Lu
- Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500 P. R China
- The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province Kunming 650500 P. R. China
- The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province Kunming 650500 P. R. China
| | - Yongming Luo
- Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500 P. R China
- Faculty of chemical engineering Kunming University of Science and Technology Kunming 650500 P. R. China
- The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province Kunming 650500 P. R. China
- The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province Kunming 650500 P. R. China
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