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Xing X, Zhang Y, Zhou G, Zhang Y, Yue J, Wang X, Yang Z, Chen J, Wang Q, Zhang J. Mechanisms of polystyrene nanoplastics adsorption onto activated carbon modified by ZnCl 2. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 876:162763. [PMID: 36921872 DOI: 10.1016/j.scitotenv.2023.162763] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 03/05/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
In this study, the adsorption capacity of activated carbon was enhanced after zinc chloride activation. The effects of pore filling, n-π and π-π interaction and electrostatic interaction on the adsorption of polystyrene nanoplastics (PSNPs) by activated carbon were determined by SEM, BET, Raman spectrum, FTIR and surface Zeta potential. Pore filling, electrostatic interaction and n-π interaction and π-π interaction all played a role in the adsorption process, but n-π interaction and π-π interaction was not the decisive role. The adsorption of PSNPs on activated carbon conformed to the pseudo-second-order kinetics and Langmuir isotherm, and there was spontaneous physical adsorption process driven by entropy in the adsorption process. Further, the effects of common anions SO42-, HCO3-, and Cl- in water on the adsorption of PSNPs by activated carbon were investigated, and the results showed that the presence of these ions could increase the adsorption capacity to some extent. ZCAC has a stable adsorption capacity under tap water, but its adsorption capacity is affected under lake water. In addition, the reuse of activated carbon was investugated, and the adsorption capacity of activated carbon was fully recovered after high temperature calcination. This study provided a direction for materials modification of adsorbed nanoplastics and a feasible method for removal of nanoplastics in drinking water treatment plants.
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Affiliation(s)
- Xinyi Xing
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Yanting Zhang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
| | - Guanyu Zhou
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Yujian Zhang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Jiapeng Yue
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Xinyu Wang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Zhiwei Yang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Junru Chen
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Qingguo Wang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Jing Zhang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Yibin, Sichuan 644000, China.
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Yaashikaa PR, Kumar PS. Fabrication and characterization of magnetic nanomaterials for the removal of toxic pollutants from water environment: A review. CHEMOSPHERE 2022; 303:135067. [PMID: 35623434 DOI: 10.1016/j.chemosphere.2022.135067] [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: 03/28/2022] [Revised: 05/11/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
The success of any sustainable growth represents an advancement of novel approaches and new methodologies for managing any ecological concern. Magnetic nanoparticles have gained recent interest owing to their versatile properties such as controlled size, shape, quantum and surface effect, etc, and outcome in wastewater treatment and pollutant removal. Developments have progressed in synthesizing magnetic nanoparticles with the required size, shape and morphology, surface and chemical composition. Magnetic nanoparticles are target specific and inexpensive compared to conventional treatment techniques. This review insight into the synthesis of magnetic nanoparticles using physical, chemical, and biological methods. The biological method of synthesizing magnetic nanoparticles serves to be cost-effective, green process, and eco-friendly for various applications. Characterization studies of synthesized nanoparticles using TEM, XRD, SARS, SANS, DLS, etc are discussed in detail. Magnetic nanoparticles are widely utilized in recent research for removing organic and inorganic contaminants. It was found that the magnetic nanosorption approach together with redox reactions proves to be an effective and flexible mechanism for the removal of pollutants from waste effluents.
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Affiliation(s)
- P R Yaashikaa
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India.
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Cai Z, Liu Q, Li H, Wang J, Tai G, Wang F, Han J, Zhu Y, Wu G. Waste-to-Resource Strategy to Fabricate Functionalized MOFs Composite Material Based on Durian Shell Biomass Carbon Fiber and Fe 3O 4 for Highly Efficient and Recyclable Dye Adsorption. Int J Mol Sci 2022; 23:ijms23115900. [PMID: 35682580 PMCID: PMC9180916 DOI: 10.3390/ijms23115900] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/18/2022] [Accepted: 05/23/2022] [Indexed: 12/24/2022] Open
Abstract
Recently, metal–organic frameworks (MOFs), which are porous inorganic–organic hybrid materials consisting of metal ions (clusters or secondary building units) and organic ligands through coordination bonds, have attracted wide attention because of their high surface area, huge ordered porosity, uniform structural cavities, and excellent thermal/chemical stability. In this work, durian shell biomass carbon fiber and Fe3O4 functionalized metal–organic framework composite material (durian shell fiber-Fe3O4-MOF, DFM) was synthesized and employed for the adsorption removal of methylene blue (MB) from wastewater. The morphology, structure, and chemical elements of the DFM material were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), transmission electron microscope (TEM), and X-ray photoelectron spectroscope (XPS) techniques. Adsorption conditions such as pH, adsorption time, and temperature were optimized. The adsorption isotherm and kinetics results show that the adsorption process of DFM material to MB is more in line with the Freundlich model and pseudo-second-order kinetic model. Using these models, the maximum adsorption capacity of 53.31 mg/g was obtained by calculation. In addition, DFM material could be easily reused through an external magnet and the removal rate of MB was still 80% after five adsorption cycles. The obtained results show that DFM composite material, as an economical, environmentally friendly, recyclable new adsorbent, can simply and effectively remove MB from wastewater.
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Affiliation(s)
- Zhangzhen Cai
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (Z.C.); (Q.L.); (H.L.); (J.W.); (G.T.); (F.W.); (Y.Z.)
| | - Qi Liu
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (Z.C.); (Q.L.); (H.L.); (J.W.); (G.T.); (F.W.); (Y.Z.)
| | - Haoxin Li
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (Z.C.); (Q.L.); (H.L.); (J.W.); (G.T.); (F.W.); (Y.Z.)
| | - Jingyi Wang
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (Z.C.); (Q.L.); (H.L.); (J.W.); (G.T.); (F.W.); (Y.Z.)
| | - Guoyu Tai
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (Z.C.); (Q.L.); (H.L.); (J.W.); (G.T.); (F.W.); (Y.Z.)
| | - Fan Wang
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (Z.C.); (Q.L.); (H.L.); (J.W.); (G.T.); (F.W.); (Y.Z.)
| | - Jiangang Han
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (Z.C.); (Q.L.); (H.L.); (J.W.); (G.T.); (F.W.); (Y.Z.)
- Correspondence: (J.H.); (G.W.)
| | - Yongli Zhu
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (Z.C.); (Q.L.); (H.L.); (J.W.); (G.T.); (F.W.); (Y.Z.)
| | - Guangyu Wu
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (Z.C.); (Q.L.); (H.L.); (J.W.); (G.T.); (F.W.); (Y.Z.)
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
- Correspondence: (J.H.); (G.W.)
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