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Liu J, Ding Y, Wang F, Ran J, Zhang H, Xie H, Pi Y, Ma L. Enhancing the supercapacitive performance of a carbon-based electrode through a balanced strategy for porous structure, graphitization degree and N,B co-doping. J Colloid Interface Sci 2024; 668:213-222. [PMID: 38677210 DOI: 10.1016/j.jcis.2024.04.154] [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: 01/12/2024] [Revised: 04/18/2024] [Accepted: 04/22/2024] [Indexed: 04/29/2024]
Abstract
Regarding carbon-based electrodes, simultaneously establishing a well-defined meso-porous architecture, introducing abundant hetero-atoms and improving the graphitization degree can effectively enhance their capacitive performance. However, it remains a significant challenge to achieve a good balance between defects and graphitization degree. In this study, the porous structure and composition of carbon materials are co-optimised through a 'dual-function' strategy. Briefly, K3Fe(C2O4)3 and H3BO3 were hybridised with a gelatin aqueous solution to form a homogeneous composite hydrogel, followed by lyophilisation and carbonisation. Owing to the dual functionality of raw materials, the graphitization, activation and hetero-atom doping processes can occur simultaneously during a one-step high-temperature treatment. The resultant carbon material exhibits a high graphitization degree (ID/IG = 0.9 ± 0.1), high hetero-atom content (N: 9.0 ± 0.3 at.%, B: 6.9 ± 0.5 at.%) and a large specific area (1754 ± 58 m2/g). The as-prepared electrode demonstrates a superior capacitance of 383 ± 1F g-1 at 1 A/g. Interestingly, the cyclic voltammetry (CV) curves exhibit a distinctive pair of broad redox peaks, which is uncommon in KOH electrolyte. Experiment data and density functional theory (DFT) simulation verify that N-5, B co-doping enhances the activity of the faradic reaction of carbon electrodes in KOH electrolyte. Furthermore, the fabricated Zn-ion hybrid supercapacitor (ZHSC) based on this carbon electrode delivers a high-energy density of 140.7 W h kg-1 at a power density of 840 W kg-1.
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Affiliation(s)
- Jin Liu
- Hubei Engineering & Technology Research Center for Functional Materials from Biomass, School of Chemistry and Material Science, Hubei Engineering University, Xiaogan, Hubei 432000, China
| | - Yu Ding
- Hubei Engineering & Technology Research Center for Functional Materials from Biomass, School of Chemistry and Material Science, Hubei Engineering University, Xiaogan, Hubei 432000, China
| | - Feng Wang
- Hubei Engineering & Technology Research Center for Functional Materials from Biomass, School of Chemistry and Material Science, Hubei Engineering University, Xiaogan, Hubei 432000, China
| | - Jiabing Ran
- College of Biological & Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China.
| | - Haining Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Haijiao Xie
- Hangzhou Yanqu Information Technology Co., Ltd., Hangzhou 310003, China
| | - Yuqiang Pi
- Hubei Engineering & Technology Research Center for Functional Materials from Biomass, School of Chemistry and Material Science, Hubei Engineering University, Xiaogan, Hubei 432000, China
| | - Liya Ma
- Core Facility of Wuhan University, Wuhan University, Wuhan 430072, China.
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Xu D, Wang Y, Wang J. A review of social-ecological system vulnerability in desertified regions: Assessment, simulation, and sustainable management. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 931:172604. [PMID: 38657819 DOI: 10.1016/j.scitotenv.2024.172604] [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: 01/11/2024] [Revised: 04/13/2024] [Accepted: 04/17/2024] [Indexed: 04/26/2024]
Abstract
Desertified regions face considerable vulnerability due to the combined effects of climate change and human activities, which threaten regional ecological security and societal development. It is therefore necessary to assess, simulate, and manage the vulnerability of desertified regions from the perspective of the social-ecological system, to support desertification control and sustainable development. This study is a systematic review of the vulnerability of the social-ecological system in desertified regions (SESDR) based on a bibliometric analysis, and a summary of the research progresses in vulnerability assessment, simulation, and sustainable management is provided. It was found that SESDR vulnerability research started relatively late, but has developed rapidly in recent years, with an emphasis on the coupling between natural systems and human activities, and multi-scale interactions and dynamics. Using various indicators at different scales, SESDR vulnerability could be assessed in terms of exposure, sensitivity, and adaptability. Modeling the complex interactions among natural and human factors across multiple scales is essential to simulate the vulnerability dynamics of the SESDR. The sustainable management of SESDR vulnerability focuses on rational spatial planning to achieve the maximum benefits, with the right measures in the right places. Four priority research directions were proposed to develop a better understanding of the mechanisms of vulnerability and smart restoration of desertified land. The findings of this study will enable researchers, land managers, and policymakers to develop a more comprehensive understanding of SESDR vulnerability, thereby enabling them to better address the challenges posed by complex resource and environmental issues.
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Affiliation(s)
- Duanyang Xu
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
| | - Yuanqing Wang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Department of Environment and Resources, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Junfang Wang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Department of Environment and Resources, University of Chinese Academy of Sciences, Beijing 100049, China
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3
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Cheng L, Chen L, Yu J, Zhao L, Wang W, Yang Z, Wang HG. A bipolar organic molecule towards the anion/cation-hosting cathode compatible with polymer electrolytes for quasi-solid-state dual-ion batteries. J Colloid Interface Sci 2024; 663:656-664. [PMID: 38430835 DOI: 10.1016/j.jcis.2024.02.178] [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: 12/15/2023] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 03/05/2024]
Abstract
Ion concentration and mobility are tightly associated with the ionic conductance of polymer electrolytes in solid-state lithium batteries. However, the anions involved in the movement are irrelevant to energy generation and cause uncontrolled dendritic growth and concentration polarization. In the current study, we proposed the strategy of using a bipolar organic molecule as the anion/cation-hosting cathode to expand the active charge carriers of polymer electrolytes. As a proof-of-concept demonstration of the novel strategy, a bipolar phthalocyanine derivative (2,3,9,10,16,17,23,24-octamethoxyphthalocyaninato) Ni(II) (NiPc-(OH)8) that could successively store anions and cations was used as the cathode hosting material in quasi-solid-state dual-ion batteries (QSSDIBs). Interestingly, peripheral polyhydroxyl substituents could build a compatible interface with poly(vinylidene fluoride-hexafluoro propylene-based gel polymer electrolytes (PVDF-HFP). As expected, NiPc-(OH)8 displays a high specific capacity of 248.2 mAh/g (at 50 mA g-1) and improved cyclic stability compared with that in liquid electrolyte. This study provides a solution to the issue of anion migration and could open another way to build high-performance QSSDIBs.
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Affiliation(s)
- Linqi Cheng
- Key Laboratory of Preparation and Applications of Environment Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, PR China; Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China
| | - Lan Chen
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China
| | - Jie Yu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China
| | - Lina Zhao
- Key Laboratory of Preparation and Applications of Environment Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, PR China; College of Chemistry, Jilin Normal University, Siping, 136000, PR China.
| | - Wanting Wang
- Key Laboratory of Preparation and Applications of Environment Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, PR China; College of Chemistry, Jilin Normal University, Siping, 136000, PR China
| | - Zexin Yang
- Key Laboratory of Preparation and Applications of Environment Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, PR China; College of Chemistry, Jilin Normal University, Siping, 136000, PR China
| | - Heng-Guo Wang
- Key Laboratory of Preparation and Applications of Environment Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, PR China; Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China; College of Chemistry, Jilin Normal University, Siping, 136000, PR China.
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Wang Y, Xiao Y, Wang Y, Lin Q, Zhu Y, Ni Z, Qiu R. Electroreductive Defluorination of Unsaturated PFAS by a Quaternary Ammonium Surfactant-Modified Cathode via Direct Cathodic Reduction. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:7578-7589. [PMID: 37116179 DOI: 10.1021/acs.est.2c08182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Remediation of per- and polyfluoroalkyl substances (PFAS) in groundwater remains a technological challenge due to the trace concentrations of PFAS and the strength of their C-F bonds. This study investigated an electroreductive system with a quaternary ammonium surfactant-modified cathode for degrading (E)-perfluoro(4-methylpent-2-enoic acid) (PFMeUPA) at a low cathodic potential. A removal efficiency of 99.81% and defluorination efficiency of 78.67% were achieved under -1.6 V (vs Ag/AgCl) at the cathode modified by octadecyltrimethylammonium bromide (OTAB). The overall degradation procedure started with the adsorption of PFMeUPA onto the modified cathode. This adsorption process was promoted by hydrophobic and electrostatic interactions between the surfactants and PFMeUPA, of which the binding percentage, binding mode, and binding energy were determined via molecular dynamics (MD) simulations and density functional theory (DFT) calculations. The step-wise degradation pathway of PFMeUPA, including reductive defluorination and hydrogenation, was derived. Meanwhile, C-F bond breaking with direct electron transfer only was achieved for the first time in this study, which also showed that the C═C bond structure of PFAS facilitates the C-F cleavage. Overall, this study highlights the crucial role of quaternary ammonium surfactants in electron transfer and electrocatalytic activities in the electroreductive system and provides insights into novel remediation approaches on PFAS-contaminated groundwater.
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Affiliation(s)
- Yue Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Ye Xiao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Yafei Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Qingqi Lin
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Yanping Zhu
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Zhuobiao Ni
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Rongliang Qiu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
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Mao S, Shen T, Zhao Q, Zhu S, Han T, Jin X, Ding F, Wang H, Gao M. A range of bifunctional vermiculite-based adsorbents for simultaneous removal of Congo red and permanganate. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
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Gogoi AJ, Pulikkal AK. Clay–gemini surfactant hybrid materials for elimination of inorganic pollutants: A comprehensive review. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Mao S, Shen T, Han T, Ding F, Zhao Q, Gao M. Adsorption and co-adsorption of chlorophenols and Cr(VI) by functional organo-vermiculite: Experiment and theoretical calculation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119638] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Fang K, Li C, Dong S, Zhang D, Wu X, Hu H. Effect of Cu 2+ on Corrosion Behavior of A106B Carbon Steel and 304L Stainless Steels in Seawater. SCANNING 2021; 2021:6661872. [PMID: 34703520 PMCID: PMC8514932 DOI: 10.1155/2021/6661872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
The corrosion behaviors of A106B carbon steel and 304L stainless steel (SS) in seawater with different Cu2+ concentrations were studied by the immersion test and the potentiodynamic polarization test. The results showed that with the increasing Cu2+ concentration, the mass lot rates of A106B and 304L SS all increased in the immersion test, and compared with A106B, the mass lot rates of 304L SS were all smaller. In the potentiodynamic polarization test, following the concentration of Cu2+ increased, the corrosion potential of A106B firstly shifted negatively; then, when Cu2+ increased to 100 ppm, the polarization curve moved to the upper right direction; namely, both the corrosion potential and corrosion electrical density increased. The corrosion potential of 304L SS increased with the increasing Cu2+, and the passive region was reduced; the pitting sensitivity improved.
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Affiliation(s)
- Kewei Fang
- Suzhou Nuclear Power Research Institute, Suzhou 215004, China
| | - Chengtao Li
- Suzhou Nuclear Power Research Institute, Suzhou 215004, China
| | - Shuai Dong
- Suzhou Nuclear Power Research Institute, Suzhou 215004, China
| | - Dubao Zhang
- Suzhou Nuclear Power Research Institute, Suzhou 215004, China
| | - Xiangfeng Wu
- Suzhou Nuclear Power Research Institute, Suzhou 215004, China
| | - Hongxiang Hu
- CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
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9
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Zhang Y, Xia M, Wang F, Ma J. Experimental and theoretical study on the adsorption mechanism of Amino trimethylphosphate (ATMP) functionalized hydroxyapatite on Pb (II) and Cd (II). Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127029] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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10
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11
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Zhou L, Peng T, Sun H, Fu D, Lai C. A novel separation method of the valuable components for activated clay production wastewater. OPEN CHEM 2021. [DOI: 10.1515/chem-2021-0052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
The acidic wastewater produced by the wet production of activated clay contains valuable components such as iron and aluminum. The precipitation method was successfully introduced to separate iron and aluminum from the activated clay production wastewater step by step, which can not only recover the valuable components, but also avoid environmental pollution. In the separation process, gypsum, iron aluminum phosphate, alumina, and sodium sulfate were prepared, and the phase compositions of separation products were analyzed by XRD and IR. The main influencing factors in the separation of iron and aluminum components were studied by single factor experiment. The results show that at the optimized conditions, phosphorus/iron molar ratio 6.0, the system pH 3.0, the reaction temperature 343 K, and the reaction time 90 min, the iron(iii) ion in the system can form a sodium-containing aluminum iron phosphate double salt, and the filtrate after separating Fe3+ and part of Al3+ can meet the requirements for forming high-purity Al2O3. During the phosphate precipitation process, the hypothesis should be correct that Al3+ reacts with
PO
4
3
−
{\text{PO}}_{4}^{3-}
to form an AlPO4 skeleton, Fe3+ isomorphically replaces Al3+ in the [AlO4] tetrahedron, and adsorption occurs simultaneously, with Na+ occupying the terminal acid sites, P(Al)–OH.
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Affiliation(s)
- Lvshan Zhou
- Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Institute of Mineral Materials & Application, School of Environment and Resource, Southwest University of Science and Technology , Mianyang 621010 , Sichuan , China
- School of Chemistry and Chemical Engineering, Eastern Sichuan Sub-Center of National Engineering Research Center for Municipal Wastewater Treatment and Reuse, Sichuan University of Arts and Science , Dazhou 635000 , Sichuan , China
| | - Tongjiang Peng
- Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Institute of Mineral Materials & Application, School of Environment and Resource, Southwest University of Science and Technology , Mianyang 621010 , Sichuan , China
| | - Hongjuan Sun
- Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Institute of Mineral Materials & Application, School of Environment and Resource, Southwest University of Science and Technology , Mianyang 621010 , Sichuan , China
| | - Dong Fu
- School of Environment and Resource, Southwest University of Science and Technology , Mianyang 621010 , Sichuan , China
- School of Chemistry and Chemical Engineering, Eastern Sichuan Sub-Center of National Engineering Research Center for Municipal Wastewater Treatment and Reuse, Sichuan University of Arts and Science , Dazhou 635000 , Sichuan , China
| | - Chuan Lai
- School of Chemistry and Chemical Engineering, Eastern Sichuan Sub-Center of National Engineering Research Center for Municipal Wastewater Treatment and Reuse, Sichuan University of Arts and Science , Dazhou 635000 , Sichuan , China
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12
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Zhang H, Xu H, Xia M, Wang F, Wan X. The adsorption and mechanism of benzothiazole and 2-hydroxybenzothiazole onto a novel ampholytic surfactant modified montmorillonite: Experimental and theoretical study. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.02.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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13
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Huang Z, Jiang L, Wu P, Dang Z, Zhu N, Liu Z, Luo H. Leaching characteristics of heavy metals in tailings and their simultaneous immobilization with triethylenetetramine functioned montmorillonite (TETA-Mt) against simulated acid rain. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115236. [PMID: 32721775 DOI: 10.1016/j.envpol.2020.115236] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/01/2020] [Accepted: 07/10/2020] [Indexed: 06/11/2023]
Abstract
For further understanding leaching characteristics of heavy metals in tailings and better immobilization on heavy metals against acid rain, batch experiments were conducted. The leaching results of Cu(II), Zn(II), Cd(II) and Mn(II) can be well fit by second-order kinetics equation, and Pb(II) can be well fit by two-constant equation. The leaching intensity of heavy metals in tailings was ranged as: Mn(II)> Cu(II)> Cd(II)> Zn(II)> Pb(II). Triethylenetetramine functioned montmorillonite (TETA-Mt) was successfully synthesized and can obtain simultaneous immobilization effect compared with Mt and TETA, and immobilization rates on Cu(II), Cd(II), Mn(II) and Zn(II) can reach above 90%, the immobilization rate on Pb(II) can reach more than 75%. The mechanisms for efficient immobilization of heavy metals on TETA-Mt included buffering and adsorption abilities. The mechanism for TETA-Mt adsorption of heavy metals included physical absorption, chelation and chemical sedimentation. The results showed that TETA-Mt can be applied to effective immobilization of heavy metals in tailings and efficient remediation of acid mine drainage (AMD) in acid rain area.
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Affiliation(s)
- Zhiyan Huang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Lu Jiang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Pingxiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou, 510006, PR China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, Guangzhou, 510006, PR China; Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, Guangzhou, 510006, PR China.
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Nengwu Zhu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Zehua Liu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Hanjin Luo
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
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14
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Liu B, Zhang SG, Chang CC. Emerging pollutants-Part II: Treatment. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:1603-1617. [PMID: 32706436 DOI: 10.1002/wer.1407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/10/2020] [Accepted: 07/14/2020] [Indexed: 06/11/2023]
Abstract
Emerging pollutants (EPs) refer to a class of pollutants, which are emerging in the environment or recently attracted attention. EPs mainly include pharmaceutical and personal care products (PPCPs), endocrine-disrupting chemicals (EDCs), and antibiotic resistance genes (ARGs). EPs have potential threats to human health and ecological environment. In recent years, the continuous detections of EPs in surface and ground water have brought huge challenges to water treatment and also made the treatment of EPs become an international research hotspot. This paper summarizes some research results on EPs treatment published in 2019. This paper may be helpful to understand the current situations and development trends of EP treatment technologies.
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Affiliation(s)
- Bo Liu
- Institute for Advanced Materials and Technology, University of Science and Technology, Beijing, China
| | - Shen-Gen Zhang
- Institute for Advanced Materials and Technology, University of Science and Technology, Beijing, China
| | - Chein-Chi Chang
- Department of Engineering and Technical Services, DC Water and Sewer Authority, Washington, District of Columbia
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15
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Ma C, Yi L, Yang J, Tao J, Li J. Nanocellulose–organic montmorillonite nanocomposite adsorbent for diuron removal from aqueous solution: optimization using response surface methodology. RSC Adv 2020; 10:30734-30745. [PMID: 35516008 PMCID: PMC9056365 DOI: 10.1039/d0ra04853d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 07/24/2020] [Indexed: 11/30/2022] Open
Abstract
Herbicides have been ubiquitous in water environments in recent years, and so it is an appealing proposition to develop an efficient adsorbent for the adsorption of diuron. Therefore, the present study investigated a cellulose nanocrystal/organic montmorillonite nanocomposite adsorbent (CNC/CTM) and its adsorption properties towards diuron present in water. The structure and characteristics of the adsorbent used in this study were characterized by various characterization methods. The optimal diuron adsorption conditions for the CNC/CTM nanocomposite were analyzed based on the response surface methodology (RSM). The adsorption isotherms and kinetics of diuron adsorption were investigated. The results indicated that the adsorption process is the result of hydrogen bonding and the hydrophobicity of the alkyl chain. Under the optimal adsorption conditions, 0.07 g L−1 CNC/CTM adsorbed 5.86 mg L−1 diuron in less than 318.68 min and an efficiency of 82.32% could be achieved. The simulation results showed that the adsorption capacity of CNC/CTM for diuron removal followed the Sips model most closely. The maximum adsorption capacity was approximately 69.04 mg g−1 at 288 K. The experimental data was described best by a pseudo-second-order kinetic equation, signifying a chemical adsorption process. The adsorbent can be reused at least five times after simple solvent washing. This study provides a theoretical basis for understanding the adsorption process of diuron present in water. CNCs and CTM were combined to obtain a nanocomposite used to remove diuron in water. The adsorption of the nanocomposite was analyzed using response surface methodology, isothermal adsorption model and adsorption kinetics.![]()
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Affiliation(s)
- Chengxiao Ma
- College of Water Conservancy and Architecture Engineering
- Shihezi University
- Shihezi 832000
- PR China
| | - Lijuan Yi
- Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan
- School of Chemistry and Chemical Engineering
- Shihezi University
- Shihezi 832000
- P. R. China
| | - Jie Yang
- College of Water Conservancy and Architecture Engineering
- Shihezi University
- Shihezi 832000
- PR China
| | - Junhong Tao
- College of Water Conservancy and Architecture Engineering
- Shihezi University
- Shihezi 832000
- PR China
| | - Junfeng Li
- College of Water Conservancy and Architecture Engineering
- Shihezi University
- Shihezi 832000
- PR China
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