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Peighambardoust SJ, Imani Zardkhaneh S, Foroughi M, Foroutan R, Azimi H, Ramavandi B. Effectiveness of polyacrylamide-g-gelatin/ACL/Mg-Fe LDH composite hydrogel as an eliminator of crystal violet dye. ENVIRONMENTAL RESEARCH 2024; 258:119428. [PMID: 38897437 DOI: 10.1016/j.envres.2024.119428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 05/23/2024] [Accepted: 06/13/2024] [Indexed: 06/21/2024]
Abstract
Cationic synthetic dyes are one of the hazards in aqueous solutions that can affect the health of humans and living organisms. In the current work, polyacrylamide (PAM)-g-gelatin hydrogel and modified PAM-g-gelatin hydrogel using activated carbon of Luffa cylindrica (ACL) and ACL/Mg-Fe LDH were applied to eliminate crystal violet (CV), a cationic dye, from water media. The hydrogels were synthesized using free radical polymerization approach, and the hydrogels were characterized using FTIR, XRD, TGA-DTG, BET, SEM, and EDX-Map. The surface area of ACL, ACL/Mg-Fe LDH, PAM-g-gelatin, PAM-g-gelatin/ACL, and PAM-g-gelatin/ACL/Mg-Fe LDH were 99.71, 141.99, 0.74, 1.47, and 1.65 m2/g, respectively, which shows that the presence of ACL and ACL/Mg-Fe LDH improved the area of the hydrogels. The maximum abatement of CV using PAM-g-gelatin (92.81%), PAM-g-gelatin/ACL (95.71%), and PAM-g-gelatin/ACL/Mg-Fe LDH (98.25%) was obtained at pH=9, temperature 25 °C, 10 mg/L CV, 60 min time, and adsorber dose of 2 g/L (for PAM-g-gelatin) and 1.5 g/L (other samples). The value of thermodynamic factors confirmed that the abatement process is exothermic and spontaneous. The kinetics data followed the pseudo-second kinetic (PSO) model. The Langmuir isotherm model had a more remarkable ability to describe the equilibrium data. The maximum adsorption capacity for PAM-g-gelatin, PAM-g-gelatin/ACL, and PAM-g-gelatin/ACL/Mg-Fe LDH was determined 35.45, 39.865, and 44.952 mg/g, respectively. Generally, the studied hydrogels can eliminate dyes from wastewater and be used as effective adsorbers.
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Affiliation(s)
| | | | - Mahsa Foroughi
- Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, 5166616471, Iran
| | - Rauf Foroutan
- Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, 5166616471, Iran.
| | - Hamidreza Azimi
- Chemical Engineering Department, Faculty of Engineering, Azarbaijan Shahid Madani University, Tabriz, 5375171379, Iran
| | - Bahman Ramavandi
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran.
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Chinnaswamy V, Mohan SG, Ramsamy KM, Tm S. Photocatalytic activity of ZnO doped Nano hydroxyapatite/GO derived from waste oyster shells for removal of Methylene blue. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:41990-42011. [PMID: 38858286 DOI: 10.1007/s11356-024-33894-7] [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: 01/10/2024] [Accepted: 05/30/2024] [Indexed: 06/12/2024]
Abstract
Hydroxyapatite (HAp) stands as an inorganic compound, recognized as a non-toxic, bioactive ceramic, and its composition closely resembles that of bone material. In this study, nHAp was prepared from waste oyster shells, which are biowaste rich in calcium carbonate. nHAp with its unique catalytic property can be used as an adsorbent in various fields, including wastewater treatment. nHAp with an exceptional surface adsorbent with excellent chemical stability, enabling its catalytic function. Nano hydroxyapatite doped with Zinc oxide (ZnO) by wet chemical precipitation and made into a composite with Graphene oxide (GO) by modified hummers method followed by grinding, which was taken as 9:1 ratio (nHAp/ZnO and GO) of weight, enhances its tensile and mechanical strength. The energy band gap of nHAp photocatalyst was evaluated as 3.39 eV and that of the in nHAp/ZnO/GO photocatalyst was narrowed to 1.77 eV. The ternary nanocomposites are very efficient in generating the photogenerated electrons and holes, thereby improving the degradation potential of dye effluents to by-products such as CO2 and H2O. The nanocomposites photocatalyst were characterized by FTIR, XRD, SEM, TEM, EDS, XPS, DRS, and BET techniques. The UV-visible study shows the complete dye degradation efficiency of the prepared nanocomposites photocatalyst. In this study, the prepared nanocomposites nHAp/ZnO/GO have studied their efficiency for the removal of MB dye in a batch process by varying the dosage from 0.1 to 0.5 g, and the effects of dosage variations, pH, kinetic, scavenger study were evaluated at a time interval of 30 min. The removal of dye was found to be 99% at 150 min of 0.3 g dosage and pH = 12 is most favorable as it reached the same percentage at 90 min. The as-prepared nanocomposite nHAp/ZnO/GO fits the kinetic rate constant equation and shows a pseudo-first-order reaction model. This study indicates the suitability for dye removal due to the synergistic effect and electrostatic interaction of the synthesized ternary nanocomposite, which shows the potential, socially active, low-cost-effective, eco-friendly, and safe for photocatalytic degradation of MB from wastewater.
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Affiliation(s)
- Vanitha Chinnaswamy
- PG and Research Department of Chemistry, R.V. Govt. Arts College, Chengalpattu, 603 001, Tamil Nadu, India
| | - Sundara Ganeasan Mohan
- Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai, 600 025, Tamil Nadu, India
| | - Kuppusamy Muniyan Ramsamy
- PG and Research Department of Chemistry, R.V. Govt. Arts College, Chengalpattu, 603 001, Tamil Nadu, India
| | - Sridhar Tm
- Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai, 600 025, Tamil Nadu, India.
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Natasha, Khan A, Rahman UU, Sadaf, Yaseen M, Abumousa RA, Khattak R, Rehman N, Bououdina M, Humayun M. Effective Removal of Nile Blue Dye from Wastewater using Silver-Decorated Reduced Graphene Oxide. ACS OMEGA 2024; 9:19461-19480. [PMID: 38708276 PMCID: PMC11064184 DOI: 10.1021/acsomega.4c00973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/06/2024] [Accepted: 04/10/2024] [Indexed: 05/07/2024]
Abstract
Nile blue (NB) dye is a highly toxic substance that when discharged into sewage presents a significant risk to the environment and human health. Carbon-based nanomaterials, such as graphene oxide (GO), reduced graphene oxide (rGO), and their nanocomposites, offer considerable potential for eliminating hazardous pollutants from aqueous systems. In this study, we have successfully fabricated bare GO and rGO, and then, the rGO was decorated with silver (Ag) nanoparticles to develop the Ag-rGO composite. The as-prepared materials were characterized by various techniques, such as UV-visible (UV-vis) and Fourier transform infrared (FTIR) spectroscopies, X-ray diffraction (XRD), energy-dispersive X-ray (EDX), and scanning electron microscopy (SEM) to elucidate their structure, morphology, and chemical composition. The pollutant removal performance of the as-prepared materials was evaluated through a batch approach under the effect of various experimental variables for removal of NB dye from wastewater. As obvious, the Ag-rGO composite revealed exceptional performance for NB dye removal from wastewater, with a maximum removal percentage of 94% within 60 min, which is remarkably higher than those of the rGO (i.e., 59%) and GO (i.e., 22%), under the same experimental conditions. The adsorption data was analyzed with thermodynamics, isotherms, and kinetics models to better understand the physicochemical mechanisms driving the effective removal of the NB dye. The results reveal that Ag-rGO nanocomposite exhibit excellent adsorption ability as well as favorable thermodynamic and kinetic parameters for NB dye removal. It was also found that the presence of light enhanced the adsorptive removal of NB while using Ag-rGO as an adsorbent. The present study noted significant reusability of the Ag-rGO nanocomposite, likely due to minimal Ag leaching and/or the robust stability of the Ag-rGO. It is suggested that Ag-rGO-based hybrid materials could serve as promising candidates for efficiently adsorbing and catalytically removing various toxic pollutants from wastewater.
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Affiliation(s)
- Natasha
- Department
of Chemistry, Abdul Wali Khan University
Mardan, Mardan 23200, Pakistan
| | - Abbas Khan
- Department
of Chemistry, Abdul Wali Khan University
Mardan, Mardan 23200, Pakistan
- Energy,
Water and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia
| | - Ubaid Ur Rahman
- Department
of Chemistry, Abdul Wali Khan University
Mardan, Mardan 23200, Pakistan
| | - Sadaf
- Department
of Chemistry, Abdul Wali Khan University
Mardan, Mardan 23200, Pakistan
| | - Muhammad Yaseen
- Department
of Chemistry, Abdul Wali Khan University
Mardan, Mardan 23200, Pakistan
| | - Rasha A. Abumousa
- Energy,
Water and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia
| | - Rozina Khattak
- Department
of Chemistry, Shaheed Benazir Bhutto Women
University Avenue, Larama Charsadda Road Peshawar, Peshawar 00384,Pakistan
| | - Noor Rehman
- Department
of Chemistry, Shaheed Benazir Bhutto University, Sheringal Dir(U), Dir Upper 18000,Pakistan
| | - Mohamed Bououdina
- Energy,
Water and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia
| | - Muhammad Humayun
- Energy,
Water and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia
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de Araujo CMB, Rios AG, Ferreira AFP, da Motta Sobrinho MA, Rodrigues AE, Ghislandi MG. Agar/graphene oxide hydrogels as nano-bioadsorbents: a comparative analysis for dye removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-31158-4. [PMID: 38055167 DOI: 10.1007/s11356-023-31158-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 11/17/2023] [Indexed: 12/07/2023]
Abstract
Nano-biocomposite hydrogel samples were produced using graphene oxide (GO) and agar and applied as adsorbents of organic components in water. The hydrogels were prepared by varying the wt% of Agar and GO. The samples were characterized, and batch adsorption experiments evaluated the effect of initial pH, equilibrium isotherms, and kinetics for the adsorption of the anionic dye Acid Orange 7 (AO) and the cationic dyes Nile Blue A (NB) and methylene blue (MB) in an aqueous medium. Overall, both hydrogel samples exhibited satisfactory results for removing NB and MB; however, there was no effective removal for the anionic dye AO. Adsorption equilibrium isotherms were obtained, and Freundlich, Langmuir, and Sips models were fitted to the experimental equilibrium data; moreover, kinetic data were adjusted to driving force models and particle mass balance. The maximum experimental adsorption capacities, 141.48 mg·g-1 (MB) and 284.69 mg·g-1 (NB), were obtained, on a dry basis, for the sample produced with 70 wt% of agar and 30 wt% of GO. Both hydrogels exhibited remarkable regenerative potential for NB and MB, with the adsorption capacity remaining constant, even after five adsorption/desorption cycles.
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Affiliation(s)
- Caroline Maria Bezerra de Araujo
- Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife, 50670-901, Brazil.
- Laboratory of Separation and Reaction Engineering, Faculty of Engineering of the University of Porto, R. Dr. Roberto Frias, S/N, 4200-465, Porto, Portugal.
| | - Albertina Gonçalves Rios
- Laboratory of Separation and Reaction Engineering, Faculty of Engineering of the University of Porto, R. Dr. Roberto Frias, S/N, 4200-465, Porto, Portugal
| | - Alexandre Filipe Porfírio Ferreira
- Laboratory of Separation and Reaction Engineering, Faculty of Engineering of the University of Porto, R. Dr. Roberto Frias, S/N, 4200-465, Porto, Portugal
| | | | - Alírio Egídio Rodrigues
- Laboratory of Separation and Reaction Engineering, Faculty of Engineering of the University of Porto, R. Dr. Roberto Frias, S/N, 4200-465, Porto, Portugal
| | - Marcos Gomes Ghislandi
- Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife, 50670-901, Brazil
- Federal Rural University of Pernambuco, R. Cento E Sessenta E Três, 300, Cabo de Sto. Agostinho, 54518-430, Brazil
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5
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Bößl F, Brandani S, Menzel VC, Rhodes M, Tovar-Oliva MS, Kirk C, Tudela I. Synergistic sono-adsorption and adsorption-enhanced sonochemical degradation of dyes in water by additive manufactured PVDF-based materials. ULTRASONICS SONOCHEMISTRY 2023; 100:106602. [PMID: 37741021 PMCID: PMC10523274 DOI: 10.1016/j.ultsonch.2023.106602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/28/2023] [Accepted: 09/14/2023] [Indexed: 09/25/2023]
Abstract
The present study proposes the first mechanistic model accounting for the most meaningful physico-chemical phenomena taking place in liquid phase adsorption processes under ultrasound. Initially, this study was aimed at developing an easy-to-make and easy-to-recover piezocatalyst for the degradation of RhB in water by combining the high piezocatalytical performance of BaTiO3 with a compatible piezoelectric support such as PVDF, manufactured by a customised additive manufacturing - direct ink writing system with in-situ poling. However, initial results showed that the resulting PVDF-BaTiO3 composite slabs performed worse than BaTiO3 piezocatalysts on their own, and that poling did not have any effect on their performance (82% RhB removal after 2 h when using either poled or unpoled PVDF-BaTiO3 composite slabs compared to 92% RhB removal after 2 h in presence of BaTiO3 piezocatalysts). Further investigation with pure PVDF materials demonstrated that, instead of piezocatalysis, synergistic ultrasound-assisted adsorption and sonochemical degradation were taking place, enabling the removal of >95% of the dye within 40 min of ultrasound treatment in the presence of 4 g L-1 of additive manufactured PVDF slabs. The results of this study and their evaluation with the mechanistic model proposed for liquid phase adsorption under ultrasound suggest that the adsorption of RhB on additive manufactured PVDF slabs was enhanced by the structure, higher specific surface ratio and higher volume of mesopores achieved through the 3D-printing process, as well as the minimisation of film resistance to mass transport due to ultrasound. Moreover, adsorption on additive manufactured PVDF enhanced the sonochemical degradation of the dye due to its high concentration in the adsorbed phase. This study demonstrates that adsorption processes, especially in the presence of PVDF materials, may be significantly more important in piezocatalysis than what has been reported to date, to the point that the synergistic combination of sono-adsorption and sonochemical degradation in presence of additive-manufactured PVDF slabs may be enough to achieve high removal rates of dyes in water.
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Affiliation(s)
- Franziska Bößl
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Sanderson Building, Robert Stevenson Road, Edinburgh EH9 3FB, UK; Edinburgh Electrochemical Engineering Group (e3 Group), The University of Edinburgh, Sanderson Building, Robert Stevenson Road, Edinburgh EH9 3FB, UK.
| | - Stefano Brandani
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Sanderson Building, Robert Stevenson Road, Edinburgh EH9 3FB, UK
| | - Valentin C Menzel
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Sanderson Building, Robert Stevenson Road, Edinburgh EH9 3FB, UK; Edinburgh Electrochemical Engineering Group (e3 Group), The University of Edinburgh, Sanderson Building, Robert Stevenson Road, Edinburgh EH9 3FB, UK
| | - Matilda Rhodes
- School of Chemistry, The University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, UK
| | - Mayra S Tovar-Oliva
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Sanderson Building, Robert Stevenson Road, Edinburgh EH9 3FB, UK; Edinburgh Electrochemical Engineering Group (e3 Group), The University of Edinburgh, Sanderson Building, Robert Stevenson Road, Edinburgh EH9 3FB, UK
| | - Caroline Kirk
- School of Chemistry, The University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, UK
| | - Ignacio Tudela
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Sanderson Building, Robert Stevenson Road, Edinburgh EH9 3FB, UK; Edinburgh Electrochemical Engineering Group (e3 Group), The University of Edinburgh, Sanderson Building, Robert Stevenson Road, Edinburgh EH9 3FB, UK.
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6
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Cerrahoğlu Kaçakgil E, Turanlı A, Dizman C. Polymeric Networks Derived from UV-Curing of Bio-Based Polyesters for Methyl Violet Removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:87129-87144. [PMID: 37420155 DOI: 10.1007/s11356-023-28599-2] [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: 03/09/2023] [Accepted: 06/30/2023] [Indexed: 07/09/2023]
Abstract
In this study, firstly, the syntheses and characterizations of biobased polyesters with different acid values obtained from the condensation reaction of biobased itaconic acid and polyethylene glycol were investigated. Then, UV curing was applied to form polymeric networks as adsorbent material from these polyesters containing different acids. Fourier transform infrared spectrometry (FTIR), Nuclear Magnetic Resonance Spectroscopy (NMR), X-ray Photoelectron Spectroscopy (XPS), Gel Permeation Chromatography (GPC) and scanning electron microscope (SEM) were used for the characterization of polymeric networks. The effects of the parameters of contact time, initial dye concentration, pH, temperature, amount of adsorbent on adsorption were investigated by batch method. In addition, adsorption equilibrium data were analyzed by Langmuir, Freundlich, Tempkin, Elovich, Redlich-Peterson, Harkin-Jura and Jossens adsorption models. Kinetic and thermodynamic studies were performed at 298, 308, 318 and 328 K and desorption studies were also examined. Comparison studies for the effects of the acid values of the adsorbent materials on the removal of methyl violet (MV) organic pollutant from aqueous solutions were analyzed. According to the pseudo-second-order model, the adsorption capacities were found to be ≥ 357.14 mg/g for the adsorbents. From the thermodynamic data, it was determined that the mechanism was exothermic and spontaneous. As a result of the third reuse, it was found that the adsorbents had a removal efficiency of ≥ 72.36%. According to the results observed the increase in the acidities in the chemical structure of bio-based polymeric networks enhances the adsoption properties.
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Affiliation(s)
| | - Aleyna Turanlı
- İzel Kimya Research and Development Center, Dilovası, Kocaeli, Turkey
| | - Cemil Dizman
- İzel Kimya Research and Development Center, Dilovası, Kocaeli, Turkey
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7
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Karimi S, Saraji M. Synthesis and characterization of g-C 3N 4-modified zeolite and its application as a methyl violet 6b cationic dye sorbent. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:748. [PMID: 37246186 DOI: 10.1007/s10661-023-11301-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 04/25/2023] [Indexed: 05/30/2023]
Abstract
This paper reports a novel, low-cost, and facile approach to prepare a hybrid material consisting of zeolite, Fe3O4, and graphitic carbon nitride as a sorbent to remove methyl violet 6b (MV) from aqueous solutions. To improve the performance of the zeolite for the removal of MV, graphitic carbon nitride (with different C-N bonds and conjugated π region) was used. Also, to perform an easy and fast separation of sorbent from aqueous media, magnetic nanoparticles were incorporated into the sorbent. The prepared sorbent was characterized by different analytical techniques such as X-ray diffraction analysis, Fourier transform infrared, field emission scanning electron microscopy, and energy-dispersive X-ray analysis. The effects of four parameters of initial pH, initial concentration of MV, contact time, and the adsorbent amount on the removal process were investigated and optimized by the central composite design method. The removal efficiency of MV was modeled as a function of the experimental parameters. Affording to the proposed model, the values of 10 mg, 28 mg L-1, and 2 min were selected as optimum condition for adsorbent amount, initial concentration, and contact time, respectively. Under this condition, the optimal removal efficiency was 86% ± 2.8 which were close to the predicted value of the model (89%). Therefore, the model could fit and predict the data. The maximal adsorption capacity of sorbent derived from Langmuir's isotherm was 384.6 mg g-1. The applied composite can efficiently remove MV from various wastewater samples (paint, textile industries, pesticide production wastewater samples, and municipal wastewater).
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Affiliation(s)
- Somayeh Karimi
- Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Mohammad Saraji
- Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
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Parlayıcı Ş, Pehlivan E. An ecologically sustainable specific method using new magnetic alginate-biochar from acorn cups (Quercus coccifera L.) for decolorization of dyes. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04609-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hussain D, Khan SA, Khan TA, Alharthi SS. Efficient liquid phase confiscation of nile blue using a novel hybrid nanocomposite synthesized from guar gum-polyacrylamide and erbium oxide. Sci Rep 2022; 12:14656. [PMID: 36038589 PMCID: PMC9424225 DOI: 10.1038/s41598-022-18591-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 08/16/2022] [Indexed: 12/26/2022] Open
Abstract
In recent times, biopolymer-metal oxide nanocomposites have gained prominent importance in the attenuation of environmental toxicants from aqueous phase. But lanthanide oxide-based biopolymer nanocomposites have scantly been evaluated for their adsorption potential. A novel guar gum-polyacrylamide/erbium oxide nanocomposite (GG-PAAm/Er2O3 NC) adsorbent was synthesized by copolymerization of guar gum (GG) and acrylamide (AAm) utilizing N-N′-methylenebisacrylamide as a crosslinker and Er2O3 as a reinforcing agent. The adsorptive efficacy of GG-PAAm/Er2O3 nanocomposite was evaluated using nile blue (NB) as a model pollutant dye from aquatic system. The prepared adsorbent was characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) analysis, Brunauer–Emmett–Teller (BET) analysis, thermogravimetric analysis, scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM–EDX), and high-resolution transmission electron microscopy (HRTEM). The optimal process parameters, which include dosage (0.8 g/L), agitation time (40 min), initial solution pH (6), and initial NB concentration (80 mg/L) were determined by batch methodology. The equilibrium data for NB confiscation was better expressed by Langmuir isotherm model, with maximal adsorption effectiveness (Qm) of 225.88 mg NB/g demonstrating the actively monolayer adsorption onto homogeneous surface of GG-PAAm/Er2O3 NC. The kinetics of NB sorption process onto GG-PAAm/Er2O3 NC was reliable with pseudo-second order model. Thermodynamic parameters such as ΔH° (15–17 kJ/mol) and ΔS° (0.079–0.087 kJ/mol/K), and − ΔG° (8.81–10.55 kJ/mol) for NB validated the endothermic, an increased randomness at the GG-PAAm/Er2O3–NB interface, and spontaneity and feasibility of the process, respectively. The spent nanocomposite was effectively regenerated with NaOH, and could be reused proficiently for five runs demonstrating the high reusability potential of the nanocomposite. The commendable removal efficiency and high reusability of GG-PAAm/Er2O3 NC recommended it to be a highly competent adsorbent for cationic dyes particularly NB diminution from aqueous waste.
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Affiliation(s)
- Daud Hussain
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110 025, India
| | - Suhail Ayoub Khan
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110 025, India
| | - Tabrez Alam Khan
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110 025, India.
| | - Salman S Alharthi
- Department of Chemistry, College of Science, Taif University, P.O. Box 110999, Taif, 21944, Saudi Arabia
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10
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Activated carbon (AC)-metal-organic framework (MOF) composite: Synthesis, characterization and dye removal. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-022-1100-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Li L, Li Y, Yang K, Li M, Luan X, Sun Y, Wang H, Sun Q, Tang K, Zheng H, Cui M, Xu W. Adsorption of methylene blue by Nicandra physaloides(L.) Gaertn seed gum/graphene oxide aerogel. ENVIRONMENTAL TECHNOLOGY 2022; 43:2342-2351. [PMID: 33446065 DOI: 10.1080/09593330.2021.1877361] [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: 09/26/2020] [Accepted: 01/09/2021] [Indexed: 06/12/2023]
Abstract
In this study, a novel composite aerogel of Nicandra physaloides(L.) Gaertn seed, gum/graphene oxide (NPG/GO), was prepared by using a vacuum freeze drying method for methylene blue (MB) adsorption. The techniques, including Brunauer-Emmett-Teller (BET), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), were adopted for studying the structure and surface characteristics of NPG/GO, with thermogravimetric analysis (TGA) being adopted for testing thermal properties. The effects of pH value, initial dye concentration, temperature and adsorbent dosage on adsorption performance were elaborately analysed. The adsorption kinetic studies showed that the process of adsorption follows Langmuir isotherm and a pseudo-second-order kinetic model. When the mass ratio of NPG to GO was 1.25:1, the adsorption capacity was the highest. According to Langmuir isotherm, the maximum adsorption capacity of 408.16 mg/g was higher than that of NPG. The specific surface area and average pore diameter of NPG/GO was measured as 2.70 m2/g and 4.8 nm, respectively. Thermodynamic analysis revealed that the adsorption process of methylene blue on NPG/GO was a spontaneous and endothermic process. In general, the prepared nanocomposites were excellent candidates for adsorption and removal process because of simple synthesis, low cost, high efficiency, non-toxicity, environment protection and degradability.
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Affiliation(s)
- Liubo Li
- State Key Laboratory of Bio-fibers and Eco-textiles, College of Mechanical and Electrical Engineering, Qingdao University, Qingdao, People's Republic of China
| | - Yanhui Li
- State Key Laboratory of Bio-fibers and Eco-textiles, College of Mechanical and Electrical Engineering, Qingdao University, Qingdao, People's Republic of China
- College of Materials Science and Engineering, Qingdao University, Qingdao, People's Republic of China
| | - Kai Yang
- College of Materials Science and Engineering, Qingdao University, Qingdao, People's Republic of China
| | - Meixiu Li
- College of Materials Science and Engineering, Qingdao University, Qingdao, People's Republic of China
| | - Xinyu Luan
- State Key Laboratory of Bio-fibers and Eco-textiles, College of Mechanical and Electrical Engineering, Qingdao University, Qingdao, People's Republic of China
| | - Yong Sun
- State Key Laboratory of Bio-fibers and Eco-textiles, College of Mechanical and Electrical Engineering, Qingdao University, Qingdao, People's Republic of China
| | - Huimin Wang
- State Key Laboratory of Bio-fibers and Eco-textiles, College of Mechanical and Electrical Engineering, Qingdao University, Qingdao, People's Republic of China
| | - Qinye Sun
- College of Materials Science and Engineering, Qingdao University, Qingdao, People's Republic of China
| | - Kaili Tang
- State Key Laboratory of Bio-fibers and Eco-textiles, College of Mechanical and Electrical Engineering, Qingdao University, Qingdao, People's Republic of China
| | - Heng Zheng
- College of Materials Science and Engineering, Qingdao University, Qingdao, People's Republic of China
| | - Mingfei Cui
- State Key Laboratory of Bio-fibers and Eco-textiles, College of Mechanical and Electrical Engineering, Qingdao University, Qingdao, People's Republic of China
| | - Wenshuo Xu
- State Key Laboratory of Bio-fibers and Eco-textiles, College of Mechanical and Electrical Engineering, Qingdao University, Qingdao, People's Republic of China
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12
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You X, Zhou R, Zhu Y, Bu D, Cheng D. Adsorption of dyes methyl violet and malachite green from aqueous solution on multi-step modified rice husk powder in single and binary systems: Characterization, adsorption behavior and physical interpretations. JOURNAL OF HAZARDOUS MATERIALS 2022; 430:128445. [PMID: 35150995 DOI: 10.1016/j.jhazmat.2022.128445] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/28/2022] [Accepted: 02/05/2022] [Indexed: 06/14/2023]
Abstract
A novel modified rice husk (MRH) has been prepared for removing cationic dyes in both single system and binary system. SEM-EDS, FT-IR, XRD and XPS were used to characterize the physical and chemical properties of MRH. It showed that the maximum adsorption capacity of MRH for methyl violet (MV) and malachite green (MG) in single system was 154.49 and 996.97 mg g-1, while in binary system was 530.94 and 408.58 mg g-1, respectively. The experimental results showed that the pseudo-second-order kinetic model was better to describe the kinetic behavior of MV and MG adsorption. By using double layer adsorption model, we found that the nD for MV adsorption were 2.52, 2.65 and 3.34 at 298, 308 and 318 K, respectively, and the nD for MG adsorption were 4.59, 4.85 and 4.30, respectively. These results illustrated that multiple dye molecules were adsorbed on one adsorption site in non-parallel direction, indicating that the adsorption of dyes is multi-molecular mechanism. Furthermore, synergistic and antagonistic adsorption might be existed simultaneously in binary system. In summary, MRH has been shown well adsorption properties and reusability and our finding might provide a new idea for developing low-cost, efficient and reusable adsorbent to remove dyes from wastewater.
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Affiliation(s)
- Xun You
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, China; Engineering Research Center of Food Biotechnology of Chinese Ministry of Education, Tianjin University of Science and Technology, Tianjin, China
| | - Rui Zhou
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, China; Engineering Research Center of Food Biotechnology of Chinese Ministry of Education, Tianjin University of Science and Technology, Tianjin, China
| | - Yinxia Zhu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, China; Engineering Research Center of Food Biotechnology of Chinese Ministry of Education, Tianjin University of Science and Technology, Tianjin, China
| | - Dingdong Bu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, China; Engineering Research Center of Food Biotechnology of Chinese Ministry of Education, Tianjin University of Science and Technology, Tianjin, China
| | - Dai Cheng
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, China; Engineering Research Center of Food Biotechnology of Chinese Ministry of Education, Tianjin University of Science and Technology, Tianjin, China.
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13
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de Araujo CMB, Ghislandi MG, Rios AG, da Costa GRB, do Nascimento BF, Ferreira AFP, da Motta Sobrinho MA, Rodrigues AE. Wastewater treatment using recyclable agar-graphene oxide biocomposite hydrogel in batch and fixed-bed adsorption column: Bench experiments and modeling for the selective removal of organics. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128357] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Safarzadeh H, Peighambardoust SJ, Mousavi SH, Mohammadi R, Peighambardoust SH. Adsorption of methyl violet dye from wastewater using poly(methacrylic acid-co-acrylamide)/bentonite nanocomposite hydrogels. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02956-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Kamali M, Esmaeili H, Tamjidi S. Synthesis of Zeolite Clay/Fe-Al Hydrotalcite Composite as a Reusable Adsorbent for Adsorption/Desorption of Cationic Dyes. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-06580-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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16
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Adsorption of cationic dyes onto chemically modified activated carbon: Kinetics and thermodynamic study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118227] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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17
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Ahmad R, Ansari K. Enhanced sequestration of methylene blue and crystal violet dye onto green synthesis of pectin modified hybrid (Pect/AILP-Kal) nanocomposite. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.10.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Vishnu D, Dhandapani B. Synthesis of novel adsorbent by incorporation of plant extracts in amino-functionalized silica-coated magnetic nanomaterial for the removal of Zn 2+and Cu 2+from aqueous solution. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2021; 19:1413-1424. [PMID: 34900276 PMCID: PMC8617123 DOI: 10.1007/s40201-021-00696-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Accepted: 06/21/2021] [Indexed: 06/14/2023]
Abstract
UNLABELLED Magnetic nanoparticles owing to their superparamagnetic behaviour and specific reactive sites are facilitated to regenerate and reuse. Our present study determines the cointegration of the plant extracts of Cynodon dactylon and Muraya koenigii with the magnetic nanoparticle coated with silica layer and surface engineered with a specific amine group. The cointegrated magnetic nano adsorbent is characterized for its analytical feature and batch studies are performed to remove zinc (Zn2+) copper (Cu2+) metal ions. Fourier transform infrared spectroscopy reveals the presence of functional entities such as NH2, Si-O-Si, C=C. The size of the cointegrated nano adsorbent (12-30 nm) was confirmed by field emission scanning electron microscopy whereas, a high-resolution transmission electron microscope affirms the nanosize of the particle constituted around 20 nm. Energy dispersive x-ray analysis confirms the presence of elements like Fe, N, Si and was confirmed by X-ray diffraction analysis and vibrating sample magnetometer affirms the superparamagnetic nature with the high magnetic saturation value (Ms - 30 emug-1). The cointegrated nano adsorbent reveals the maximum adsorption capacity of Zn2+ as 78.24 mg.g-1 and Cu2+ as 81.76 mg.g-1 of the adsorbent under the optimized conditions of contact time 45 min, pH 6.0 and temperature 35 °C. Kinetics such as pseudo-first-order, pseudo-second-order, Elovich, intraparticle diffusion and isotherm studies like Langmuir, Freundlich, Dubinin-Radushkevich and Temkin were performed to understand the mechanism of interaction between the nanoadsorbent and metal ions. The reaction system follows the pseudo-second-order kinetics and Langmuir isotherm model for both the Cu2+ and Zn2+ metal ions. To determine the reusing capacity of the cointegrated nanoadsorbent, the adsorption efficiency was studied for continuous twelve cycles with 80% recovery after subsequent acid treatment. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s40201-021-00696-9.
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Affiliation(s)
- Dhanya Vishnu
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110 India
| | - Balaji Dhandapani
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110 India
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19
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Foroutan R, Peighambardoust SJ, Hemmati S, Khatooni H, Ramavandi B. Preparation of clinoptilolite/starch/CoFe 2O 4 magnetic nanocomposite powder and its elimination properties for cationic dyes from water and wastewater. Int J Biol Macromol 2021; 189:432-442. [PMID: 34450143 DOI: 10.1016/j.ijbiomac.2021.08.144] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 08/09/2021] [Accepted: 08/18/2021] [Indexed: 02/06/2023]
Abstract
A new magnetic nanocomposite clinoptilolite (CLT)/Starch/CoFe2O4 was synthesized using co-precipitation method. The prepared magnetic composite powder was utilized for decontamination of methylene blue dye (MBD), methyl violet dye (MVD), and crystal violet dye (CVD) from water media. The BET analysis showed that CLT modification using starch and CoFe2O4 nanoparticles improved its specific surface and the amount of specific surface area for CLT, CoFe2O4, and CLT/Starch/CoFe2O4 powder was reported to be 18.82 m2.g-1, 151.4 m2.g-1, and 104.75 m2.g-1, respectively. Experimental results showed that pH 9 had a vital role in the adsorption process of all three types. Langmuir and Redlich-Petersen isotherm models were well fitted with experimental data. Also, the maximum adsorption capacity of CVD, MBD, and MVD to the desired composite was determined as 32.84 mg.g-1, 31.81 mg.g-1, and 31.15 mg.g-1, respectively. In addition, the kinetic data of the removal process followed a pseudo-first order (PFO) kinetic model. Negative thermodynamic parameters were indicated that the process is spontaneous and exothermic. Finally, ad(de)sorption experiments' results showed that the synthesized nanocomposite adsorbent has an excellent ability to adsorb cationic dyes after several consecutive cycles.
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Affiliation(s)
- Rauf Foroutan
- Faculty of Chemical & Petroleum Engineering, University of Tabriz, Tabriz 5166616471, Iran
| | | | - Saeed Hemmati
- Department of Chemical Engineering, Bushehr Branch, Islamic Azad University, Bushehr, Iran
| | - Hamzeh Khatooni
- Faculty of Chemical & Petroleum Engineering, University of Tabriz, Tabriz 5166616471, Iran
| | - Bahman Ramavandi
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran.
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20
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Yadav A, Bagotia N, Sharma AK, Kumar S. Advances in decontamination of wastewater using biomass-basedcomposites: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 784:147108. [PMID: 33892326 DOI: 10.1016/j.scitotenv.2021.147108] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 06/12/2023]
Abstract
Contaminant removal from wastewater using natural biosorbents has been widely studied as a suitable and environmentally benign alternative for conventional techniques. Currently, researchers are working on various biomass-based composites for wastewater remediation to improve the performance of natural biosorbents. This review takes into focus a wide range of biomass-based composites like hydrogel composites, metal oxide composites, magnetic composites, polymer composites, carbon nanotubes (CNTs) and graphene composites, metal organic framework composites (MOFs) and clay composites for the removal of various contaminants from wastewater. It is evident from the literature survey that the composite fabrication involves the modification of morphological and textural features of the biomass which results in significant enhancement of adsorption capacity. Apart from this, regeneration of the used biomass-based composite is also studied in depth in order to overcome the problem of solid waste generation. This review would prove to be beneficial for researchers who are currently focusing on the development of cost-effective, easily available, recyclable biomass-based composites with enhanced adsorption capacities for wastewater treatment.
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Affiliation(s)
- Aruna Yadav
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani 127021, Haryana, India
| | - Nisha Bagotia
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani 127021, Haryana, India
| | - Ashok K Sharma
- Department of Chemistry, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonepat 131039, Haryana, India
| | - Surender Kumar
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani 127021, Haryana, India.
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21
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Huang L, Li D, Zhang D, Peng H, Ren Y. Facile preparation of taurine modified magnetic chitosan nanocomposites as biodegradable adsorbents toward methylene blue. ENVIRONMENTAL TECHNOLOGY 2021; 42:3191-3204. [PMID: 32003648 DOI: 10.1080/09593330.2020.1725140] [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: 09/17/2019] [Accepted: 01/26/2020] [Indexed: 06/10/2023]
Abstract
A novel magnetic Fe3O4@chitosan@taurine adsorbent (MCT) was prepared by surface modification of magnetic chitosan nano-composites with taurine-glutaraldehyde solution. The adsorbents were characterized by FTIR, SEM, TEM, XRD, TGA and VSM techniques, respectively. According to the FTIR spectrum of MCT, the characteristic peaks of the SO3-group on MCT were observed to have a shift after adsorption of the cationic dye, which indicates that there may be electrostatic attraction between the MCT and the cationic dye. Moreover, the saturation magnetization of MCT was found to be 20.797 emu g-1, suggesting that MCT has sufficient magnetic response to meet the need of magnetic separation. The adsorption properties of cationic dyes by MCT were further investigated by using methylene blue (MB) as a representative. The adsorption behaviour of MB by MCT was well described by the pseudo-second order kinetic model and the Langmuir isotherm model, respectively. The maximum adsorption capacity of MB calculated from the Langmuir model fitting was 204.1 mg g-1 at pH 5 and 384.6 mg g-1 at pH 9, respectively, and the adsorption equilibrium could be reached within 10 min. Besides, the negative values of ΔG° and ΔH° suggested that the adsorption process was spontaneous and exothermic, and the good reusability indicated that MCT could act as a recyclable adsorbent for dye adsorption. All of these results illustrate that MCT has great potential for practical application in removal of cationic dyes from aqueous solutions.
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Affiliation(s)
- Long Huang
- China Tobacco Hubei Industrial Co. Ltd., Wuhan, People's Republic of China
| | - Dan Li
- China Tobacco Hubei Industrial Co. Ltd., Wuhan, People's Republic of China
| | - Duntie Zhang
- China Tobacco Hubei Industrial Co. Ltd., Wuhan, People's Republic of China
| | - Hong Peng
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yong Ren
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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22
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Pashaei-Fakhri S, Peighambardoust SJ, Foroutan R, Arsalani N, Ramavandi B. Crystal violet dye sorption over acrylamide/graphene oxide bonded sodium alginate nanocomposite hydrogel. CHEMOSPHERE 2021; 270:129419. [PMID: 33418222 DOI: 10.1016/j.chemosphere.2020.129419] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/19/2020] [Accepted: 12/22/2020] [Indexed: 05/07/2023]
Abstract
The synthesis of acrylamide bonded sodium alginate (AM-SA) hydrogel and acrylamide/graphene oxide bonded sodium alginate (AM-GO-SA) nanocomposite hydrogel was successfully performed using the free radical method. The AM-SA and AM-GO-SA hydrogels were applied as composited adsorbents in crystal violet (CV) dye removal. The adsorption process experiments were performed discontinuously and the acquired data showed that the efficiency is more dependent on pH than other factors. The C-O, CO, and CC groups were detected in the produced hydrogels. The amount of surface area was computed to be 44.689 m2/g, 0.0392 m2/g, and 6.983 m2/g for GO, AM-SA, and AM-GO-SA nanocomposite hydrogel, respectively. The results showed that the experimental data follow the Redlich-Peterson isotherm model. Also, the maximum adsorption capacity of monolayer for CV dye adsorption was determined using AM-SA hydrogel and AM-GO-SA nanocomposite hydrogel 62.07 mg/g and 100.30 mg/g, respectively. In addition, the parameters RL, n, and E showed that the processes of adsorption of CV dye using both types of adsorbents are physical and desirable. Thermodynamically, the CV elimination was exothermic and spontaneous. Besides, thermodynamic results showed that the adsorption process is better proceeding at low temperatures. The experimental data followed a pseudo- second- order (PSO) kinetic model. Also, the Elovich model showed that AM-GO-SA nanocomposite hydrogel has more ability to absorb CV dye. Therefore, according to the obtained results, it can be stated that the produced hydrogels are efficient and viable composited adsorbent in removing CV dye from aqueous solution.
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Affiliation(s)
| | | | - Rauf Foroutan
- Faculty of Chemical & Petroleum Engineering, University of Tabriz, Tabriz, Iran
| | - Nasser Arsalani
- Research Laboratory of Polymer, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Bahman Ramavandi
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran.
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23
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Nizam NUM, Hanafiah MM, Mahmoudi E, Halim AA, Mohammad AW. The removal of anionic and cationic dyes from an aqueous solution using biomass-based activated carbon. Sci Rep 2021; 11:8623. [PMID: 33883637 PMCID: PMC8060261 DOI: 10.1038/s41598-021-88084-z] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 04/08/2021] [Indexed: 01/06/2023] Open
Abstract
In this study, two biomass-based adsorbents were used as new precursors for optimizing synthesis conditions of a cost-effective powdered activated carbon (PAC). The PAC removed dyes from an aqueous solution using carbonization and activation by KOH, NaOH, and H2SO4. The optimum synthesis, activation temperature, time and impregnation ratio, removal rate, and uptake capacity were determined. The optimum PAC was analyzed and characterized using Fourier-transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), a field emission scanning electron microscope (FESEM), Zeta potential, and Raman spectroscopy. Morphological studies showed single-layered planes with highly porous surfaces, especially PAC activated by NaOH and H2SO4. The results showed that the experimental data were well-fitted with a pseudo-second-order model. Based on Langmuir isotherm, the maximum adsorption capacity for removing methylene blue (MB) was 769.23 mg g−1 and 458.43 mg g−1 for congo red (CR). Based on the isotherm models, more than one mechanism was involved in the adsorption process, monolayer for the anionic dye and multilayer for the cationic dye. Elovich and intraparticle diffusion kinetic models showed that rubber seed shells (RSS) has higher α values with a greater tendency to adsorb dyes compared to rubber seed (RS). A thermodynamic study showed that both dyes’ adsorption process was spontaneous and exothermic due to the negative values of the enthalpy (ΔH) and Gibbs free energy (ΔG). The change in removal efficiency of adsorbent for regeneration study was observed in the seventh cycles, with a 3% decline in the CR and 2% decline in MB removal performance. This study showed that the presence of functional groups and active sites on the produced adsorbent (hydroxyl, alkoxy, carboxyl, and π − π) contributed to its considerable affinity for adsorption in dye removal. Therefore, the optimum PAC can serve as efficient and cost-effective adsorbents to remove dyes from industrial wastewater.
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Affiliation(s)
- Nurul Umairah M Nizam
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Marlia M Hanafiah
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia. .,Centre for Tropical Climate Change System, Institute of Climate Change, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
| | - Ebrahim Mahmoudi
- Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Azhar A Halim
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Abdul Wahab Mohammad
- Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.,Research Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
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24
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Sillanpää M, Mahvi AH, Balarak D, Khatibi AD. Adsorption of Acid orange 7 dyes from aqueous solution using Polypyrrole/nanosilica composite: Experimental and modelling. INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY 2021. [DOI: 10.1080/03067319.2020.1855338] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mika Sillanpää
- Department of Civil and Environmental Engineering, Florida International University, Miami, FL, USA
| | - Amir Hossein Mahvi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Department of Environmental Health Engineering, Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Davoud Balarak
- Department of Environmental Health, Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Aram Dokht Khatibi
- Department of Environmental Health, Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
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25
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Gong Y, Liu G, Wang Q, Zhu A, Liu P, Wu Q. Synthesis of a novel mesoporous Fe3O4@SiO2/CTAB-SiO2 composite material and its application in the efficient removal of bisphenol A from water. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-020-04801-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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26
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Hoijang S, Wangkarn S, Ieamviteevanich P, Pinitsoontorn S, Ananta S, Randall Lee T, Srisombat L. Silica-coated magnesium ferrite nanoadsorbent for selective removal of methylene blue. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125483] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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27
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Foroutan R, Peighambardoust SJ, Aghdasinia H, Mohammadi R, Ramavandi B. Modification of bio-hydroxyapatite generated from waste poultry bone with MgO for purifying methyl violet-laden liquids. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:44218-44229. [PMID: 32761348 DOI: 10.1007/s11356-020-10330-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
In the present work, biological hydroxyapatite (Bio-HAp) was generated from waste poultry bone and modified with magnesium oxide (MgO) nanoparticles (Bio-HAp/MgO) and used in the adsorption process of methyl violet (MV). The Bio-HAp and Bio-HAp/MgO mesoporous composites were characterized using physicochemical techniques. Bio-HAp and Bio-HAp/MgO composites had crystalline and mesoporous structures. The specific surface area of Bio-HAp/MgO mesoporous composites (14.7 m2/g) was higher and lower than that of Bio-HAp (4.6 m2/g) and MgO (154.9 m2/g), respectively. The effect of pH (2-10), temperature (25-45 °C), contact time (10-50 min), initial MV concentration (5-25 mg/L), and Bio-HAp/MgO quantity (0.5-2.5 g/L) on the adsorption efficiency was optimized through response surface methodology-central composite design (RSM-CCD). Among four isotherm models, the Freundlich isotherm (R2 > 0.98) was better matched with the equilibrium data. Based on the isotherm parameters (E, n, and RL), the MV adsorption process using Bio-HAp particles and Bio-HAp/MgO mesoporous composites is physical and desirable. The pseudo-second-order (R2 > 0.97) was more potent than the other models for modeling kinetic data. According to the thermodynamic investigation, the MV adsorption was an exothermic and spontaneous process. The mesoporous composite had good reusability to remove MV dye from liquid media up to 5 steps. Bio-HAp particles and Bio-HAp/MgO mesoporous composites were tested for treatment, which significantly reduced the dye content of the real sample.
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Affiliation(s)
- Rauf Foroutan
- Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, 51666-16471, Iran
| | | | - Hassan Aghdasinia
- Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, 51666-16471, Iran
| | - Reza Mohammadi
- Polymer Research Laboratory, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Bahman Ramavandi
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran.
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran.
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28
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Noroozi R, Gholami M, Farzadkia M, Jonidi Jafari A. Catalytic potential of CuFe 2O 4/GO for activation of peroxymonosulfate in metronidazole degradation: study of mechanisms. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2020; 18:947-960. [PMID: 33312615 PMCID: PMC7721943 DOI: 10.1007/s40201-020-00518-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 08/03/2020] [Indexed: 05/11/2023]
Abstract
Application of magnetite nanoparticles (CuFe2O4/GO) were anchored on graphene oxide (GO), as a Heterogeneous nanocomposite for activating of peroxymonosulfate (PMS) into Metronidazole (MNZ) destruction. The effect of solution pH, reaction time, effectiveness of water matrix components and trapping factors, different catalyst concentrations, PMS and contaminants were evaluated as operating factors on the efficiency of MNZ degradation. Also, mineralization, stability, reactivity and Recycling tests of the catalyst, and the degradation kinetics were performed. MNZ degradation and mineralization were obtained under optimal conditions (0.2 g/L catalyst, pH = 5, 30 mg/L MNZ and 2 mM PMS), 100% and 41.02%, respectively over 120 min. Leaching of Fe and Cu was found <0.2 mg/L for CuFe2O4/GO showed a high stability of catalyst, and a significant recyclability was achieved CuFe2O4/GO within 5 times consecutive use. MNZ degradation affected by anions was reduced as follows: HCO3 - > NO3 - > Cl- > SO4 2-. The experimental data were very good agreement with pseudo-first-order kinetic model, and during quenching tests SO4 •- radicals played a dominant role in the degradation process of MNZ. As a result, the CuFe2O4/GO/PMS system can be described as a promising activation of PMS in MNZ degradation, due to its high stability, reusability and good catalyst reactivity, and the production of reactive species simultaneously.
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Affiliation(s)
- Roghayeh Noroozi
- Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran
| | - Mitra Gholami
- Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Farzadkia
- Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
| | - Ahmad Jonidi Jafari
- Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
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Ruiz C, Vera M, Rivas BL, Sánchez S, Urbano BF. Magnetic methacrylated gelatin- g-polyelectrolyte for methylene blue sorption. RSC Adv 2020; 10:43799-43810. [PMID: 35519716 PMCID: PMC9058399 DOI: 10.1039/d0ra08188d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 11/23/2020] [Indexed: 12/21/2022] Open
Abstract
The presence of organic dyes in wastewater is a problem of growing interest due to its effect on the environment and human health. The aim of this work was to obtain magnetic hydrogels of methacrylated gelatin-g-polyelectrolyte to be used for the removal of methylene blue (MB) used as a model contaminant dye. Grafted gelatins with two degrees of functionalization (48% and 76%) were obtained and subsequently crosslinked using 2-acrylamido-2-methyl-1-propansulfonic acid (AMPS) and sodium 4-vinylbenzenesulfonate (SSNa) monomers. Magnetic nanoparticles were formed by an in situ precipitation method to easily remove the hydrogel from the adsorption medium. Our data show that the hydrogel with a low degree of methacrylation displayed a high degree of swelling and decreased stiffness due to its less connected polymer network. MB adsorption experiments showed that neither the low degree of methacrylation nor the presence of the aromatic group in the PSSNa polyelectrolyte generated an increase in the adsorption capacity of the hydrogel. However, a significant increase in the adsorption capacity was observed when dry hydrogels were combined compared to that of previously swollen hydrogel. The experimental data were non-linearly fitted to the pseudo-first and pseudo-second order models and in both cases, the highest qe values were obtained for the GelMA-HF/PAMPS and GelMA-LF/PAMPS hydrogels. The Freundlich isotherm model was the one with the best correlation with the data (r2 > 0.9700). Higher kf values were obtained for the GelMA-HF/PAMPS and GelMA-LF/PAMPS hydrogels at 20 °C. The results obtained from this study demonstrated that magnetic polyelectrolyte-grafted gelatins are an efficient option for the removal of contaminant dyes from aqueous solutions. Magnetic methacrylated gelatin grafted with anionic polyelectrolytes hydrogels removes methylene blue efficiently and easily separate with a magnet.![]()
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Affiliation(s)
- Carla Ruiz
- Departmento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción Concepción Chile
| | - Myleidi Vera
- Departmento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción Concepción Chile
| | - Bernabé L Rivas
- Departmento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción Concepción Chile
| | - Susana Sánchez
- Departmento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción Concepción Chile
| | - Bruno F Urbano
- Departmento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción Concepción Chile
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Performance of montmorillonite/graphene oxide/CoFe2O4 as a magnetic and recyclable nanocomposite for cleaning methyl violet dye-laden wastewater. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.08.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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31
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Peighambardoust SJ, Aghamohammadi-Bavil O, Foroutan R, Arsalani N. Removal of malachite green using carboxymethyl cellulose-g-polyacrylamide/montmorillonite nanocomposite hydrogel. Int J Biol Macromol 2020; 159:1122-1131. [DOI: 10.1016/j.ijbiomac.2020.05.093] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/05/2020] [Accepted: 05/13/2020] [Indexed: 12/29/2022]
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Esmaeili H, Tamjidi S. Ultrasonic-assisted synthesis of natural clay/Fe 3O 4/graphene oxide for enhance removal of Cr (VI) from aqueous media. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:31652-31664. [PMID: 32500498 DOI: 10.1007/s11356-020-09448-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 05/25/2020] [Indexed: 05/21/2023]
Abstract
In this study, Fe3O4/graphene oxide (GO)/clay composite was used to remove chromium (VI) ion from aqueous media. The structure and characteristics of the Fe3O4/GO/clay composite were investigated using FT-IR, SEM, EDX/Map, VSM, BET, and XRD analyses. The BET analysis indicated that the specific surface area and mean pore size of the Fe3O4/GO/clay composite were calculated as 61.64 m2/g and 16.2 nm respectively, which indicate that the composite has a mesoporous structure. Also, the VSM analysis showed that the Fe3O4/GO/clay composite has a superparamagnetic property. Moreover, the highest removal efficiency of Cr (VI) from aqueous media was obtained to be 98.84%, which achieved at pH 3, Cr (VI) ion concentration of 10 mg/L, the composite dosage of 1 g/L, contact time of 60 min, and temperature of 25 °C. Furthermore, the kinetic and equilibrium studies showed that the quasi second-order kinetic model and the Langmuir model could better describe the sorption behavior of the clay and the Fe3O4/clay composite, while the behavior of the Fe3O4/GO/clay composite can be better explained by the Freundlich model. Besides, the maximum sorption capacities of the clay, Fe3O4/clay, and Fe3O4/GO/clay composite were obtained to be 49.61, 62.26, and 71.47 mg/g, respectively, which shows that the maximum sorption capacity of the clay increases with improving the surface properties of the clay. Also, the thermodynamic study indicated that the Cr (VI) sorption process was exothermic and spontaneous in nature. In general, the results indicated that the Fe3O4/GO/clay composite was more effective than the clay and the Fe3O4/clay in Cr (VI) ion removal.
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Affiliation(s)
- Hossein Esmaeili
- Department of Chemical Engineering, Bushehr Branch, Islamic Azad University, Bushehr, Iran.
| | - Sajad Tamjidi
- Department of Chemical Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran
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Fabrication of carboxymethyl functionalized β-cyclodextrin-modified graphene oxide for efficient removal of methylene blue. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.07.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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34
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Nano-magnetically modified activated carbon prepared by oak shell for treatment of wastewater containing fluoride ion. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.06.015] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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35
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Dzhardimalieva GI, Baimuratova RK, Knerelman EI, Davydova GI, Kudaibergenov SE, Kharissova OV, Zhinzhilo VA, Uflyand IE. Synthesis of Copper(II) Trimesinate Coordination Polymer and Its Use as a Sorbent for Organic Dyes and a Precursor for Nanostructured Material. Polymers (Basel) 2020; 12:E1024. [PMID: 32369992 PMCID: PMC7284901 DOI: 10.3390/polym12051024] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/23/2020] [Accepted: 04/25/2020] [Indexed: 12/11/2022] Open
Abstract
Several important synthesis pathways for metal-organic frameworks (MOFs) were applied to determine how the synthesis methods and conditions affect the structure and adsorption capacity of the resulting samples. In the present work, three different synthesis routes were used to obtain copper trimesinate coordination polymer: Slow evaporation (A), solvothermal synthesis using a polyethylene glycol (PEG-1500) modulator (B), and green synthesis in water (C). This MOF was characterized by elemental analysis, infrared spectrometry, X-ray diffraction, scanning electron microscopy, thermogravimetry and volumetric nitrogen adsorption/desorption. The samples have permanent porosity and a microporous structure with a large surface area corresponding to the adsorption type I. The obtained MOF was tested as a sorbent to remove organic dyes methylene blue (МВ), Congo red (CR) and methyl violet (MV) as examples. Dye adsorption followed pseudo-first-order kinetics. The equilibrium data were fitted to the Langmuir and Freundlich isotherm models, and the isotherm constants were determined. Thermodynamic parameters, such as changes in the free energy of adsorption (ΔG0), enthalpy (ΔH0), and entropy (ΔS0), were calculated. Thermolysis of copper trimesinate leads to the formation of carbon materials Cu@C with a high purity.
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Affiliation(s)
- Gulzhian I. Dzhardimalieva
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, Moscow Region 142432, Russia; (R.K.B.); (E.I.K.); (G.I.D.)
- Moscow Aviation Institute (National Research University), Moscow 125993, Russia
| | - Rose K. Baimuratova
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, Moscow Region 142432, Russia; (R.K.B.); (E.I.K.); (G.I.D.)
| | - Evgeniya I. Knerelman
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, Moscow Region 142432, Russia; (R.K.B.); (E.I.K.); (G.I.D.)
| | - Galina I. Davydova
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, Moscow Region 142432, Russia; (R.K.B.); (E.I.K.); (G.I.D.)
| | - Sarkyt E. Kudaibergenov
- Institute of Polymer Materials and Technology, Almaty 050019, Kazakhstan;
- Laboratory of Engineering Profile, Satbayev University, Almaty 050013, Kazakhstan
| | - Oxana V. Kharissova
- Universidad Autónoma de Nuevo León, 66455 San Nicolás de los Garza, Nuevo León, Mexico;
| | - Vladimir A. Zhinzhilo
- Department of Chemistry, Southern Federal University, Rostov-on-Don 344090, Russia; (V.A.Z.); (I.E.U.)
| | - Igor E. Uflyand
- Department of Chemistry, Southern Federal University, Rostov-on-Don 344090, Russia; (V.A.Z.); (I.E.U.)
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Foroutan R, Peighambardoust SJ, Mohammadi R, Omidvar M, Sorial GA, Ramavandi B. Influence of chitosan and magnetic iron nanoparticles on chromium adsorption behavior of natural clay: Adaptive neuro-fuzzy inference modeling. Int J Biol Macromol 2020; 151:355-365. [DOI: 10.1016/j.ijbiomac.2020.02.202] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 02/15/2020] [Accepted: 02/18/2020] [Indexed: 01/20/2023]
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37
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Surface oxidized and un-oxidized activated carbon derived from Ziziphus jujube Stem, and its application in removal of Cd(II) and Pb(II) from aqueous media. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2578-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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