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Gao Q, Tao D, Qi Z, Liu Y, Guo J, Yu Y. Amidoxime functionalized PVDF-based chelating membranes enable synchronous elimination of heavy metals and organic contaminants from wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 318:115643. [PMID: 35949092 DOI: 10.1016/j.jenvman.2022.115643] [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: 02/19/2022] [Revised: 06/23/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
Aiming at the synchronous elimination of heavy metals and organic contaminants from wastewater, the amidoxime functionalized PVDF-based chelating membrane was fabricated in this study. The structure and morphology of the chelating membrane were characterized using infrared spectroscopy (FT-IR), nuclear magnetic resonance spectrometer (NMR) and scanning electron microscopy (SEM). The SEM results show that the chemical modification with amidoxime groups did not damage the structure of the PVDF-based membrane. The chelating membrane has a high removal efficiency for Cu2+ (77.33%) and Pb2+ (79.23%) owing to the chemisorption through coordination bonds. However, the chelating membrane exhibits a low removal efficiency for Cd2+ (29.88%) due to the physical adsorption. The chelating membrane has a high rejection efficiency of BSA (95.17%) and lysozyme (70.09%), which is attributed to the sieving effect and increased hydrophobicity. Furthermore, the membrane performance for simultaneously removing metals and proteins from simulated wastewater was examined. The interaction of metal ions with proteins (BSA and lysozyme) can enhance the ion removal efficiency of the chelated membrane, but decrease the protein rejection efficiency due to the destructive effect. The amidoxime functionalized PVDF-based chelating membrane has a high potential for application in wastewater treatment.
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Affiliation(s)
- Qiang Gao
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, China
| | - Dawei Tao
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, China
| | - Zhibin Qi
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, China
| | - Yuanfa Liu
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, China.
| | - Jing Guo
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, China
| | - Yue Yu
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, China
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Selvan BK, Thiyagarajan K, Das S, Jaya N, Jabasingh SA, Saravanan P, Rajasimman M, Vasseghian Y. Synthesis and characterization of nano zerovalent iron-kaolin clay (nZVI-Kaol) composite polyethersulfone (PES) membrane for the efficacious As 2O 3 removal from potable water samples. CHEMOSPHERE 2022; 288:132405. [PMID: 34597639 DOI: 10.1016/j.chemosphere.2021.132405] [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: 07/20/2021] [Revised: 09/20/2021] [Accepted: 09/27/2021] [Indexed: 06/13/2023]
Abstract
In this study, Kaolin clay, a mining material, was used as an abundant and available mineral as zero-valent iron-kaolinite composites for As2O3 removal from the water samples. The composites were made by the sodium borohydrate reduction method. The existence of Fe0 in the produced composites was confirmed by X-ray diffraction (XRD) and Fourier-Transform Infrared Spectroscopy (FTIR) analysis. The membranes are prepared with zerovalent nano Iron-Kaolin and PES. The synthesized composites were then mixed with polyethersulfone to prepare the membranes S1, S2, and S3 with varying compositions. Field Emission Scanning Electron Microscopy (FESEM) analysis of the produced membranes showed the porous structure and the contact angle of membranes increased the hydrophilicity. The membranes were explored for the removal of As2O3 (AsIII) in potable water samples. The filtration studies were carried out using the syringe filtration setup. Analysis of the arsenic (III) solution was carried out, before and after the filtration process using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES), which showed a maximum of 50% reduction in its original concentration. The filtered membrane is analyzed for arsenic by Energy Dispersive X-ray (EDX) technique. Thus, the synthesized membrane effectively sieves the arsenic in water samples.
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Affiliation(s)
- B Karpanai Selvan
- Dravida Petroleum DMCC, ONGC BVG EPS, B-Athivaraganatham, Cuddalore, 608601, Tamil Nadu, India
| | - K Thiyagarajan
- Department of Nanoscience and Technology, University College of Engineering, BIT Campus, Anna University, Tiruchirappalli, 620 024, Tamil Nadu, India
| | - Soni Das
- Department of Biotechnology, University College of Engineering, BIT Campus, Anna University, Tiruchirappalli, 620 024, Tamil Nadu, India
| | - N Jaya
- Department of Petrochemical Technology, University College of Engineering, BIT Campus, Anna University, Tiruchirappalli, 620 024, Tamil Nadu, India.
| | - S Anuradha Jabasingh
- Process Engineering Division, School of Chemical and Bio Engineering, Addis Ababa Institute of Technology, Addis Ababa University, Ethiopia
| | - P Saravanan
- Department of Petrochemical Technology, University College of Engineering, BIT Campus, Anna University, Tiruchirappalli, 620 024, Tamil Nadu, India
| | - M Rajasimman
- Department of Chemical Engineering, Annamalai University, Annamalainagar, 60002, Tamil Nadu, India
| | - Yasser Vasseghian
- Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran
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Abdulkarem E, Ibrahim Y, Kumar M, Arafat HA, Naddeo V, Banat F, Hasan SW. Polyvinylidene fluoride (PVDF)-α-zirconium phosphate (α-ZrP) nanoparticles based mixed matrix membranes for removal of heavy metal ions. CHEMOSPHERE 2021; 267:128896. [PMID: 33187662 DOI: 10.1016/j.chemosphere.2020.128896] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 10/15/2020] [Accepted: 11/03/2020] [Indexed: 06/11/2023]
Abstract
The removal of heavy metal ions from industrial wastewater is essential as they pose serious threats to human health and the environment. In this study, novel poly(vinylidene fluoride) (PVDF)-alpha-zirconium phosphate (PVDF-α-ZrP) mixed matrix membranes (MMM) were prepared via the phase inversion method. Membranes with different α-ZrP nanoparticles (NPs) loadings (0.25, 0.50, 0.75, or 1.00 wt%) were fabricated. The impacts of α-ZrP NP loading on the membrane's morphology, functionality, surface charge, and hydrophilicity were evaluated. Fourier-transform infrared and the energy-dispersive X-ray spectroscopy were performed to verify the presence of α-ZrP NPs in the fabricated membranes. The PVDF membranes became more hydrophilic after incorporating the α-ZrP NPs. The thermal and mechanical stability and porosity of the PVDF-α-ZrP MMM were higher than those of the pristine PVDF membrane. The increased hydrophilicity, pore size and porosity and reduced surface roughness of the PVDF-α-ZrP membrane led to significant flux increase and reduced fouling propensity. The PVDF-α-ZrP membrane containing 1.00 wt% α-ZrP was capable of removing 42.8% (Cd2+), 93.1% (Cu2+), 44.4% (Ni2+), 91.2% (Pb2+), and 44.2% (Zn2+) from an aqueous solution at neutral pH during filtration.
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Affiliation(s)
- Elham Abdulkarem
- Center for Membranes and Advanced Water Technology (CMAT), Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Yazan Ibrahim
- Center for Membranes and Advanced Water Technology (CMAT), Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Mahendra Kumar
- Center for Membranes and Advanced Water Technology (CMAT), Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Hassan A Arafat
- Center for Membranes and Advanced Water Technology (CMAT), Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Vincenzo Naddeo
- Sanitary Environmental Engineering Division (SEED), Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II #132, 84084, Fisciano, SA, Italy
| | - Fawzi Banat
- Center for Membranes and Advanced Water Technology (CMAT), Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Shadi W Hasan
- Center for Membranes and Advanced Water Technology (CMAT), Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
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Zhao X, Li J, Mu S, He W, Zhang D, Wu X, Wang C, Zeng H. Efficient removal of mercury ions with MoS 2-nanosheet-decorated PVDF composite adsorption membrane. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115705. [PMID: 33035876 DOI: 10.1016/j.envpol.2020.115705] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 09/20/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
The exploitation of a new adsorbent with a high adsorption performance and recyclability is of great practical significance for the treatment of wastewater containing mercury ions. In this study, a novel membrane adsorbent was fabricated by blending MoS2 nanosheets into a PVDF polymer matrix (P-PVDF/MoS2) followed by non-solvent-induced phase conversion. This material was able to bind mercury ions and was not affected by the solution ionic strength, co-existing anions, or interfering heavy metal ions. The optimal pH range for mercury ion elimination was 4.5-6.0, and P-PVDF/MoS2 exhibited a maximum adsorption capacity of 578 mg g-1. The pseudo-second-order adsorption kinetics and Langmuir isotherm models best described the adsorption process. The adsorption mechanism was mainly monolayer chemisorption, for which the S groups were the major active sites. Furthermore, the membrane could be removed from the aqueous solution easily using tweezers, and the removal efficiency of mercury ions remained over 90% after ten cycles. This study suggests that the inexpensive and recyclable P-PVDF/MoS2 membranes can be used for the efficient removal of heavy metal ions from wastewater at a large scale.
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Affiliation(s)
- Xinghua Zhao
- Service Center of Public Technology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, PR China
| | - Jing Li
- Department of Chemistry and Applied Chemistry, Changji University, Changji, 831100, Xinjiang, PR China
| | - Shuyong Mu
- Service Center of Public Technology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, PR China
| | - Wei He
- Department of Chemistry and Applied Chemistry, Changji University, Changji, 831100, Xinjiang, PR China
| | - Dan Zhang
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xian, 710021, PR China
| | - Xia Wu
- Department of Chemistry and Applied Chemistry, Changji University, Changji, 831100, Xinjiang, PR China
| | - Chuanyi Wang
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xian, 710021, PR China
| | - Hehua Zeng
- Department of Chemistry and Applied Chemistry, Changji University, Changji, 831100, Xinjiang, PR China.
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A selective and sensitive procedure for magnetic solid-phase microextraction of lead(II) on magnetic cellulose nanoparticles from environmental samples prior to its flame atomic absorption spectrometric detection. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-02085-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Wehbi M, Mehdi A, Alaaeddine A, Jaber N, Ameduri B. Solid-Liquid Europium Ion Extraction via Phosphonic Acid-Functionalized Polyvinylidene Fluoride Siloxanes. Polymers (Basel) 2020; 12:polym12091955. [PMID: 32872346 PMCID: PMC7563938 DOI: 10.3390/polym12091955] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/20/2020] [Accepted: 08/25/2020] [Indexed: 12/20/2022] Open
Abstract
Novel triethoxysilane and dimethyl phosphonate functional vinylidene fluoride (VDF)-containing terpolymers, for potential applications in Eu ion extraction from water, were produced by conventional radical terpolymerization of VDF with vinyltriethoxylsilane (VTEOS) and vinyldimethylphosphonate (VDMP). Although initial attempts for the copolymerization of VTEOS and VDMP failed, the successful terpolymerization was initiated by peroxide to lead to multiple poly(VDF-ter-VDMP-ter-VTEOS) terpolymers, that had different molar percentages of VDF (70–90 mol.%), VTEOS (5–20 mol.%) and VDMP (10 mol.%) in 50–80% yields. The obtained terpolymers were characterized by 1H, 19F, 29Si and 31P NMR spectroscopies. The crosslinking of such resulting poly(VDF-ter-VDMP-ter-VTEOS) terpolymers was achieved by hydrolysis and condensation (sol–gel process) of the triethoxysilane groups in acidic media, to obtain a 3D network, which was analyzed by solid state 29Si and 31P NMR spectroscopies, TGA and DSC. The thermal stability of the terpolymers was moderately high (up to 300 °C under air), whereas they display a slight increase in their crystallinity-rate from 9.7% to 12.1% after crosslinking. Finally, the dimethyl phosphonate functions were hydrolyzed into phosphonic acid successfully, and the europium ion extraction capacity of terpolymer was studied. The results demonstrated a very high removal capacity of Eu(III) ions from water, up to a total removal at low concentrations.
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Affiliation(s)
- Mohammad Wehbi
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34095 Montpellier, France;
- Department of Chemistry and Biochemistry, Faculty of Sciences 1, Lebanese University, Rafic Hariri Campus—Hadath, Beirut 6573/14, Lebanon; (A.A.); (N.J.)
- Correspondence: (M.W.); (B.A.)
| | - Ahmad Mehdi
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34095 Montpellier, France;
| | - Ali Alaaeddine
- Department of Chemistry and Biochemistry, Faculty of Sciences 1, Lebanese University, Rafic Hariri Campus—Hadath, Beirut 6573/14, Lebanon; (A.A.); (N.J.)
| | - Nada Jaber
- Department of Chemistry and Biochemistry, Faculty of Sciences 1, Lebanese University, Rafic Hariri Campus—Hadath, Beirut 6573/14, Lebanon; (A.A.); (N.J.)
| | - Bruno Ameduri
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34095 Montpellier, France;
- Correspondence: (M.W.); (B.A.)
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PAN/PVDF chelating membrane for simultaneous removal of heavy metal and organic pollutants from mimic industrial wastewater. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116185] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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8
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Dense and robust aminopolycarboxylic acid-decorated porous monoliths for eliminating trace Cu(II) or Zn(II) from water. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124310] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Wang X, Liu P, Liu F, Wang X, Ji M, Song L. Adsorption of Pb(II) by a polyvinylidene fluoride membrane bearing chelating poly(amino phosphonic acid) and poly(amino carboxylic acid) groups. ADSORPT SCI TECHNOL 2018. [DOI: 10.1177/0263617418795531] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Pb(II) can cause a hazardous effect on ecosystem and public health due to its high biotoxicity. A polyvinylidene fluoride-type membrane bearing both poly(amino phosphonic acid) and poly(amino carboxylic acid) functional groups was fabricated for the purpose of Pb(II) removal from the aqueous solutions. The adsorption behaviors of the fabricated chelating membrane toward Pb(II) were studied by the series of static and continuous adsorption experiments. When the pH, adsorption equilibrium time, initial Pb(II) concentration, and temperature were 5.1, 300 min, 1.0 mmol g−1, and 298 K, respectively, Pb(II) uptake of the membrane was 1.1 mmol g−1. The presence of coexisting metal ions and complexing reagents decreased the Pb(II) uptake. The adsorption kinetic and isotherm adsorption followed pseudo-second-order equation and Langmuir model, respectively; this adsorption process showed a spontaneous and exothermic feature. The bed depth service time and Thomas models were suitable for describing obtained breakthrough curves.
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Affiliation(s)
| | | | - Fushun Liu
- Tangshan Haiqingyuan Science and Technology Co., Ltd, China; Yanshan University, China
| | | | - Min Ji
- Yanshan University, China
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Dzhardimalieva GI, Uflyand IE. Design Strategies of Metal Complexes Based on Chelating Polymer Ligands and Their Application in Nanomaterials Science. J Inorg Organomet Polym Mater 2018. [DOI: 10.1007/s10904-018-0841-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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DFT Investigation of the Effects of Coexisting Cations and Complexing Reagents on Ni(II) Adsorption by a Polyvinylidene Fluoride-Type Chelating Membrane Bearing Poly(Amino Phosphonic Acid) Groups. METALS 2017. [DOI: 10.3390/met7020061] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Li Z, Kang W, Wei N, Qiu J, Sun C, Cheng B. Preparation of a polyvinylidene fluoride tree-like nanofiber mat loaded with manganese dioxide for highly efficient lead adsorption. RSC Adv 2017. [DOI: 10.1039/c6ra27865e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel polyvinylidene fluoride tree-like structure nanofiber mat loaded with manganese dioxide as a highly efficient lead adsorbent was fabricated.
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Affiliation(s)
- Zongjie Li
- School of Textile
- Tianjin Polytechnic University
- Tianjin 300387
- PR China
| | - Weimin Kang
- School of Textile
- Tianjin Polytechnic University
- Tianjin 300387
- PR China
| | - Na Wei
- College of Packaging and Printing Engineering
- Tianjin Vocational Institute
- Tianjin 300387
- PR China
| | - Jiuan Qiu
- College of Packaging and Printing Engineering
- Tianjin Vocational Institute
- Tianjin 300387
- PR China
| | - Cheng Sun
- College of Packaging and Printing Engineering
- Tianjin Vocational Institute
- Tianjin 300387
- PR China
| | - Bowen Cheng
- State Key Laboratory of Separation Membranes and Membrane Processes
- Tianjin Polytechnic University
- Tianjin 300387
- PR China
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Fathy M, Abdel Moghny T, Mousa MA, El-Bellihi AHAA, Awadallah AE. Absorption of calcium ions on oxidized graphene sheets and study its dynamic behavior by kinetic and isothermal models. APPLIED NANOSCIENCE 2016. [DOI: 10.1007/s13204-016-0537-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Carica Papaya Seed as a Biosorbent for Removal of Cr (VI) and Ni (II) Ions from Aqueous Solution: Thermodynamics and Kinetic Analysis of Experimental Data. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2014. [DOI: 10.1515/ijcre-2013-0096] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The use of Carica papaya seeds as an adsorbent for decontamination of toxic metal ions like Ni (II) and Cr (VI) in solution was investigated. The maximum biosorption capacities of Cr (VI) and Ni (II) were observed at pH 2 and pH 6 respectively. The experimental isotherm data were analyzed using the Langmuir, Freundlich, Dubinin–Radushkevich and Temkin equations. In order to determine the best fit isotherm, five error analysis methods were used, namely the sum-of-squared errors (SSE), the composite functional error (HYBRID), the Marquardt’s percent standard deviation (MPSD), the average relative error (ARE) and the sum of absolute error (EABS). The error values demonstrated that the Langmuir isotherm model provided the best fit to the experimental data for Cr (VI) and the Freundlich model for Ni (II). Adsorption kinetics data were tested using pseudo-first-order and pseudo-second-order models. Kinetic studies showed that the adsorption followed a pseudo-second-order model. Thermodynamic parameters such as changes of standard free energy (ΔG), enthalpy (ΔH) and entropy (ΔS) were determined. The maximum metal uptake of 5.85 mgg–1 for Cr (VI) and 5.58 mgg–1 for Ni (II) from Langmuir model demonstrates the ability of Carica papaya seed to absorb heavy metals. Fourier transform infrared spectroscopy analysis was used to evaluate the binding characteristics of Carica papaya seed with metals.
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Repo E, Warchoł JK, Bhatnagar A, Mudhoo A, Sillanpää M. Aminopolycarboxylic acid functionalized adsorbents for heavy metals removal from water. WATER RESEARCH 2013; 47:4812-32. [PMID: 23863393 DOI: 10.1016/j.watres.2013.06.020] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 05/08/2013] [Accepted: 06/08/2013] [Indexed: 05/18/2023]
Abstract
Due to the excellent chelating properties of aminopolycarboxylic acid (APCAs), they can be used for the removal of metals from contaminated waters. This paper reviews the research results obtained for both commercial and self-prepared adsorbents functionalized with four most common APCAs: iminodiacetic acid (IDA), nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), and diethylenetriaminepentaacetic acid (DTPA). The structural characteristics and unique metal binding properties of these chelating adsorbents are presented. The theory of the adsorption phenomena is discussed based on the kinetics of adsorption, equilibrium adsorption isotherm models, and thermodynamic models. The most important applications of APCA-functionalized adsorbents are also described. APCA-functionalized adsorbents are found to be highly promising materials for metal removal from contaminated waters.
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Affiliation(s)
- Eveliina Repo
- Laboratory of Green Chemistry, LUT Savo Sustainable Technologies, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland.
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Xiang T, Zhang Z, Liu H, Yin Z, Li L, Liu X. Characterization of cellulose-based electrospun nanofiber membrane and its adsorptive behaviours using Cu(II), Cd(II), Pb(II) as models. Sci China Chem 2013. [DOI: 10.1007/s11426-012-4783-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Song L, Zhao X, Fu J, Wang X, Sheng Y, Liu X. DFT investigation of Ni(II) adsorption onto MA-DTPA/PVDF chelating membrane in the presence of coexistent cations and organic acids. JOURNAL OF HAZARDOUS MATERIALS 2012; 199-200:433-439. [PMID: 22152921 DOI: 10.1016/j.jhazmat.2011.11.046] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Revised: 11/11/2011] [Accepted: 11/11/2011] [Indexed: 05/31/2023]
Abstract
Melamine-diethylenetriaminepentaacetic acid/polyvinylidene fluoride (MA-DTPA/PVDF) chelating membrane bearing polyaminecarboxylate groups was used to remove Ni(II) from nickel plating effluents. Adsorption experiments were conducted to study the adsorption of the membrane towards Ni(II) in Ni(II)-Ca(II), Ni(II)-NH(4)(+), Ni(II)-Fe(III) binary systems, and Ni(II)-lactic acid, Ni(II)-succinic acid and Ni(II)-citric acid complex systems. For the ternary nickel plating processes, the effects of 3d transition metals including Fe(II), Co(II), Cu(II) and Zn(II) on Ni(II) adsorption were evaluated. The influences of the aforementioned coexistent cations and organic acids were elucidated by the continuum solvation model (COSMO)-corrected density functional theory (DFT) method. Geometries and complexation energies were analyzed for metal-MA-DTPA and Ni(II)-organic acid complexes. DFT results accord with the experimental data, indicating that DFT is helpful to evaluate the complexation between the membrane and metal cations. The coexistent Ca(II) tends to form more stable complex with MA-DTPA ligand than NH(4)(+) and Fe(III), and can interfere with the formation of Ni(II)-MA-DTPA complex. The complexing sequence of 3d metals with MA-DTPA ligand is Zn(II)<Co(II)<Ni(II)<Fe(II)<Cu(II). Therefore, both Fe(II) and Cu(II) have the considerable competition with Ni(II). The stabilities of Ni(II)-organic acid complexes follow the order of lactic acid<succinic acid<citric acid, but cannot be comparable to that of Ni(II)-MA-DTPA complex.
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Affiliation(s)
- Laizhou Song
- Department of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
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