Magnetic layered double hydroxide composite as new adsorbent for efficient Cu (II) and Ni (II) ions removal from aqueous samples: Adsorption mechanism investigation and parameters optimization

In this work, the magnetic layered double hydroxide composite as a new adsorbent was synthesized and applied for efficient copper (II) and nickel (II) ions removal from aqueous samples. After fabrication, the adsorbent was identified and characterized via Fourier-transform infrared spectroscopy (FT-...

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Veröffentlicht in:Journal of environmental management 2023-03, Vol.329, p.117009-117009, Article 117009
Hauptverfasser: Taheri, Sahar, Sedghi-Asl, Mohammad, Ghaedi, Mehrorang, Mohammadi-Asl, Zarin, Rahmanian, Mohammad
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container_end_page 117009
container_issue
container_start_page 117009
container_title Journal of environmental management
container_volume 329
creator Taheri, Sahar
Sedghi-Asl, Mohammad
Ghaedi, Mehrorang
Mohammadi-Asl, Zarin
Rahmanian, Mohammad
description In this work, the magnetic layered double hydroxide composite as a new adsorbent was synthesized and applied for efficient copper (II) and nickel (II) ions removal from aqueous samples. After fabrication, the adsorbent was identified and characterized via Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Field-emission scanning electron microscopy (FE-SEM), Energy-dispersive X-ray spectroscopy and vibrating sample magnetometer (VSM), while FE-SEM reveals and denote layered structure of present adsorbent. The magnetic strength of 20.34 emu g−1 supplies sufficient magnetic property which leads to a solution fast separation of the adsorbent from the sample solution by an external magnet. Then, central composite design (CCD) based on response surface methodology (RSM) was used to optimize the effects of various parameters on the removal process and accordingly best operational conditions was fixed at: 0.039 g of adsorbent, 6.31 min sonication, pH (8) and 17 mgl−1 of both copper (II) and nickel (II) ions concentrations, respectively. Moreover, the “Lack of Fit p-values” of analysis of variance were obtained to be 0.3758 and 0.8750 for nickel (II) and copper (II) ions, respectively which is not significant value denoting suitability of the current model. Amongst different isotherm and kinetic models, the current adsorption process followed the Freundlich and pseudo-second-order models, while the criterion for judgment is based on their higher correlation coefficients (more than 0.9) compared to other models. Kinetic judgment is based on the closeness of experimental and theoretical adsorption capacity and higher R2 values. The Freundlich model based on the multilayer process occurs owing to the adsorption of ions onto the heterogeneous surface of the adsorbent. The adsorbent showed the maximum adsorption capacities of 200.00 mg g−1 and 109.92 mg g−1 for Cu2+ and Ni2+ ions, respectively. Experimental results explore that the chemical and electrostatic interactions were responsible for the under-study model ions. The relative standard deviations assign to both metal ions adsorption was 1.63–3.78% representing the applicability of the composite for practical purposes. •Adoption of Ca–Al LDH/Fe3O4 composite as an adsorbent was examined for the removal of Cu2+ and Ni2+ ions from water samples.•CCD-RSM was used to assess and optimize the effects of various factors on the removal of copper (II) and nickel (II) ions from water.•Ca–Al LDH/Fe3O4 ca
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After fabrication, the adsorbent was identified and characterized via Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Field-emission scanning electron microscopy (FE-SEM), Energy-dispersive X-ray spectroscopy and vibrating sample magnetometer (VSM), while FE-SEM reveals and denote layered structure of present adsorbent. The magnetic strength of 20.34 emu g−1 supplies sufficient magnetic property which leads to a solution fast separation of the adsorbent from the sample solution by an external magnet. Then, central composite design (CCD) based on response surface methodology (RSM) was used to optimize the effects of various parameters on the removal process and accordingly best operational conditions was fixed at: 0.039 g of adsorbent, 6.31 min sonication, pH (8) and 17 mgl−1 of both copper (II) and nickel (II) ions concentrations, respectively. Moreover, the “Lack of Fit p-values” of analysis of variance were obtained to be 0.3758 and 0.8750 for nickel (II) and copper (II) ions, respectively which is not significant value denoting suitability of the current model. Amongst different isotherm and kinetic models, the current adsorption process followed the Freundlich and pseudo-second-order models, while the criterion for judgment is based on their higher correlation coefficients (more than 0.9) compared to other models. Kinetic judgment is based on the closeness of experimental and theoretical adsorption capacity and higher R2 values. The Freundlich model based on the multilayer process occurs owing to the adsorption of ions onto the heterogeneous surface of the adsorbent. The adsorbent showed the maximum adsorption capacities of 200.00 mg g−1 and 109.92 mg g−1 for Cu2+ and Ni2+ ions, respectively. Experimental results explore that the chemical and electrostatic interactions were responsible for the under-study model ions. 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Moreover, the “Lack of Fit p-values” of analysis of variance were obtained to be 0.3758 and 0.8750 for nickel (II) and copper (II) ions, respectively which is not significant value denoting suitability of the current model. Amongst different isotherm and kinetic models, the current adsorption process followed the Freundlich and pseudo-second-order models, while the criterion for judgment is based on their higher correlation coefficients (more than 0.9) compared to other models. Kinetic judgment is based on the closeness of experimental and theoretical adsorption capacity and higher R2 values. The Freundlich model based on the multilayer process occurs owing to the adsorption of ions onto the heterogeneous surface of the adsorbent. The adsorbent showed the maximum adsorption capacities of 200.00 mg g−1 and 109.92 mg g−1 for Cu2+ and Ni2+ ions, respectively. Experimental results explore that the chemical and electrostatic interactions were responsible for the under-study model ions. The relative standard deviations assign to both metal ions adsorption was 1.63–3.78% representing the applicability of the composite for practical purposes. •Adoption of Ca–Al LDH/Fe3O4 composite as an adsorbent was examined for the removal of Cu2+ and Ni2+ ions from water samples.•CCD-RSM was used to assess and optimize the effects of various factors on the removal of copper (II) and nickel (II) ions from water.•Ca–Al LDH/Fe3O4 can be used as a versatile adsorbent for the removal of heavy metals and also other pollutants from different samples.</description><subject>Adsorption</subject><subject>Adsorption mechanism</subject><subject>Copper - analysis</subject><subject>Heavy metals</subject><subject>Hydrogen-Ion Concentration</subject><subject>Hydroxides - chemistry</subject><subject>Ions</subject><subject>Kinetics</subject><subject>Layered double hydroxide</subject><subject>Magnetic Phenomena</subject><subject>Nickel - analysis</subject><subject>Pollutants</subject><subject>Removal</subject><subject>Spectroscopy, Fourier Transform Infrared</subject><subject>Water Pollutants, Chemical - chemistry</subject><issn>0301-4797</issn><issn>1095-8630</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkc-O0zAQxiMEYsvCI4DmuBxSxo5jJ1zQquJPpQUucLbceLLrKo6DnXYpT8ejkWwKV04ee37zjT5_WfaS4Zohk2_26z31R2_6NUfO14wpxPpRtmJYl3klC3ycrbBAlgtVq4vsWUp7RCw4U0-zi0KWRcmEXGW_P5vbnkbXQGdOFMmCDYddR3B3sjH8dJagCX4IyY0EJkFP92BsCnFH_QhtiEBt6xo33zYHuNpuX4PpLXxxS-1CnyCSD0fTQRuDB_PjQOGQIBk_dJTewvUsN4wTCZ6aO9O75MH1R0qjuzUP77PiYKLxNFJMECbau18PvefZk9Z0iV6cz8vs-4f33zaf8puvH7eb65u8mcyOeU2c16y1QtStEFQQqpbVqJSUJAh5UXFOqqoqyXaykbXAokLDCuJYIgpTXGZXi-4Qw-Qgjdq71FDXmX62o7kqJeNc1GpCywVtYkgpUquH6LyJJ81Qz-HpvT6Hp-fw9BLeNPfqvOKw82T_Tf1NawLeLQBNRo-Ook7zzzdkXaRm1Da4_6z4A5KwsAg</recordid><startdate>20230301</startdate><enddate>20230301</enddate><creator>Taheri, Sahar</creator><creator>Sedghi-Asl, Mohammad</creator><creator>Ghaedi, Mehrorang</creator><creator>Mohammadi-Asl, Zarin</creator><creator>Rahmanian, Mohammad</creator><general>Elsevier Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20230301</creationdate><title>Magnetic layered double hydroxide composite as new adsorbent for efficient Cu (II) and Ni (II) ions removal from aqueous samples: Adsorption mechanism investigation and parameters optimization</title><author>Taheri, Sahar ; 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After fabrication, the adsorbent was identified and characterized via Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Field-emission scanning electron microscopy (FE-SEM), Energy-dispersive X-ray spectroscopy and vibrating sample magnetometer (VSM), while FE-SEM reveals and denote layered structure of present adsorbent. The magnetic strength of 20.34 emu g−1 supplies sufficient magnetic property which leads to a solution fast separation of the adsorbent from the sample solution by an external magnet. Then, central composite design (CCD) based on response surface methodology (RSM) was used to optimize the effects of various parameters on the removal process and accordingly best operational conditions was fixed at: 0.039 g of adsorbent, 6.31 min sonication, pH (8) and 17 mgl−1 of both copper (II) and nickel (II) ions concentrations, respectively. Moreover, the “Lack of Fit p-values” of analysis of variance were obtained to be 0.3758 and 0.8750 for nickel (II) and copper (II) ions, respectively which is not significant value denoting suitability of the current model. Amongst different isotherm and kinetic models, the current adsorption process followed the Freundlich and pseudo-second-order models, while the criterion for judgment is based on their higher correlation coefficients (more than 0.9) compared to other models. Kinetic judgment is based on the closeness of experimental and theoretical adsorption capacity and higher R2 values. The Freundlich model based on the multilayer process occurs owing to the adsorption of ions onto the heterogeneous surface of the adsorbent. The adsorbent showed the maximum adsorption capacities of 200.00 mg g−1 and 109.92 mg g−1 for Cu2+ and Ni2+ ions, respectively. Experimental results explore that the chemical and electrostatic interactions were responsible for the under-study model ions. The relative standard deviations assign to both metal ions adsorption was 1.63–3.78% representing the applicability of the composite for practical purposes. •Adoption of Ca–Al LDH/Fe3O4 composite as an adsorbent was examined for the removal of Cu2+ and Ni2+ ions from water samples.•CCD-RSM was used to assess and optimize the effects of various factors on the removal of copper (II) and nickel (II) ions from water.•Ca–Al LDH/Fe3O4 can be used as a versatile adsorbent for the removal of heavy metals and also other pollutants from different samples.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>36535146</pmid><doi>10.1016/j.jenvman.2022.117009</doi><tpages>1</tpages></addata></record>
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subjects Adsorption
Adsorption mechanism
Copper - analysis
Heavy metals
Hydrogen-Ion Concentration
Hydroxides - chemistry
Ions
Kinetics
Layered double hydroxide
Magnetic Phenomena
Nickel - analysis
Pollutants
Removal
Spectroscopy, Fourier Transform Infrared
Water Pollutants, Chemical - chemistry
title Magnetic layered double hydroxide composite as new adsorbent for efficient Cu (II) and Ni (II) ions removal from aqueous samples: Adsorption mechanism investigation and parameters optimization
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