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Dakave S, Bhinge G, Kanamadi C. Dual-capable spinel cobalt oxide nanoparticles for electrocatalytic oxygen evolution and water contaminant removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34682-z. [PMID: 39145907 DOI: 10.1007/s11356-024-34682-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 08/07/2024] [Indexed: 08/16/2024]
Abstract
This study investigates the synthesis and electrocatalytic performance of cobalt oxide (Co3O4) nanoparticles for the oxygen evolution reaction (OER) and their role in water treatment as contaminant removal agents. Cobalt oxide nanoparticles are recognized as promising materials in electrocatalysis due to their tunable properties and nanoscale engineering potential. Here, fine cobalt oxide nanoparticles are synthesized using the sol-gel method followed by various sintering temperatures to achieve precise control over surface morphology, size, and shape. Characterization via high-resolution scanning electron microscopy (HRSEM) and high-resolution transmission electron microscopy (HRTEM) elucidates the impact of sintering temperature on nanoparticle properties. Thin film electrodes of cobalt oxide are fabricated using the doctor blade method and evaluated using linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS). Among the tested sintering temperatures, cobalt oxide electrodes sintered at 600 °C exhibit superior catalytic activity, demonstrating an overpotential of 258 mV (vs RHE) at 10 mA cm-2 current density and a Tafel slope of 17.33 mV dec-1. Furthermore, these electrodes demonstrate excellent stability, maintaining OER performance for 10 h in 1 M NaOH electrolyte. Additionally, the role of cobalt oxide nanoparticles in water treatment is explored using inductively coupled plasma atomic emission spectrometry (ICP-AES). Experimental results reveal that lower sintering temperatures enhance the electrocatalytic properties of cobalt oxide nanoparticles, highlighting their potential contribution to sustainable energy and water treatment technologies. This work underscores the significance of cobalt oxide nanoparticles as dual-functional materials for advancing electrocatalysis and water purification applications, thus paving the way for the development of efficient and environmentally friendly technologies.
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Affiliation(s)
- Siddhi Dakave
- Magnetic and Multifunctional Materials Research Division, Department of Physics, Devchand College, Arjunnagar, 591 237, Maharashtra, India
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India, 603203
| | - Guruprasad Bhinge
- Magnetic and Multifunctional Materials Research Division, Department of Physics, Devchand College, Arjunnagar, 591 237, Maharashtra, India
| | - Chidanand Kanamadi
- Magnetic and Multifunctional Materials Research Division, Department of Physics, Devchand College, Arjunnagar, 591 237, Maharashtra, India.
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Trieu TND, Nguyen NTT, Nguyen TTT, Nguyen DTC, Tran TV. A comparative study on the malachite green dye adsorption of chemically synthesized and green MgFe 2O 4 nanoparticles using gerbera floral waste extract. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:41638-41655. [PMID: 37743447 DOI: 10.1007/s11356-023-29779-w] [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: 06/20/2023] [Accepted: 09/04/2023] [Indexed: 09/26/2023]
Abstract
The situation of discharging a large amount of dyes from the textile industries has caused many adverse effects on human health and the ecosystems. Emerging bio-nanomaterials represent a new trend in efficient dye removal in aqueous media. Herein, we mention that MgFe2O4 bioprepared using gerbera extract has been successfully used to adsorb malachite green (MG) in water. A comparison was made to determine the dye removal efficiency between biogenic MgFe2O4 (MFOB) and chemical MgFe2O4 (MFOC). The spherical MFOB material exhibited a large surface area of 85.0 m2 g-1 and high crystallinity. The obtained outcomes showed that the highest adsorption capacity of MG dye was 584.49 mg g-1 at a MFOB dose of 0.05 g L-1 and MG concentration of 10 mg L-1. Higher correlation coefficients in the Langmuir isotherm suggested monolayer adsorption of MG. The Box-Behnken design and response surface method were established to optimize MG removal percentage under the conditions, i.e., initial MG concentration (10-30 mg L-1), adsorbent dose (0.02-0.08 g L-1), and pH of dye solution (6-8). MFOB had good reusability with high removal efficiencies after three continuous cycles. Post reuse, this adsorbent still showed excellent stability through the verification of their structural properties in comparison with fresh MFOB, showing potential for practical applications.
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Affiliation(s)
- Thuy Ngoc Doan Trieu
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Vietnam
- Department of Chemical Engineering and Processing, Nong Lam University, Thu Duc District, Ho Chi Minh City, 700000, Vietnam
| | - Ngoan Thi Thao Nguyen
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Vietnam
| | - Thuy Thi Thanh Nguyen
- Department of Chemical Engineering and Processing, Nong Lam University, Thu Duc District, Ho Chi Minh City, 700000, Vietnam
| | - Duyen Thi Cam Nguyen
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Vietnam
| | - Thuan Van Tran
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Vietnam.
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Islam MS, Roy H, Ahmed T, Firoz SH, Chang SX. Surface-modified graphene oxide-based composites for advanced sequestration of basic blue 41 from aqueous solution. CHEMOSPHERE 2023; 340:139827. [PMID: 37586493 DOI: 10.1016/j.chemosphere.2023.139827] [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: 05/04/2023] [Revised: 08/11/2023] [Accepted: 08/13/2023] [Indexed: 08/18/2023]
Abstract
Advanced materials for the efficient treatment of textile wastewater need to be developed for the sustainable growth of the textile industry. In this study, graphene oxide (GO) was modified by the incorporation of natural clay (bentonite) and mixed metal oxide (copper-cobalt oxide) to produce GO-based binary and ternary composites. Two binary composites, GO/bentonite and GO/Cu-Co Ox (oxide), and one ternary composite, GO/bentonite/Cu-Co Ox, were characterized by Fourier transform-infrared spectroscopy (FTIR), scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and Brunauer-Emmett-Teller (BET) analysis. The adsorption efficiency of these composites was evaluated against a cationic dye, Basic Blue 41 (BB41). The composites had several surface functional groups, and the ternary composite had tubular porous structures formed by the cross-linking of the bentonite and GO planes. The BET surface area of the ternary composite was 50% higher than that of the GO. The BB41 removals were 92, 89, 80, and 69% for GO/bentonite/Cu-Co oxide, GO/bentonite, GO and GO/Cu-Co oxide, respectively. The pseudo-2nd-order and intraparticle diffusion models best describe the kinetics results, indicating chemisorption and slow pore diffusion-controlled adsorption processes. The Langmuir isotherm-derived adsorption capacity of GO/bentonite/Cu-Co oxide was 351.1 mg/g, which was very close to the measured value. After five consecutive cycles, the ternary composite retained 90% BB41 removal efficiency compared to its 1st cycle. Electrostatic interaction and pore diffusion were predicted to be the controlling mechanisms for the adsorption of the BB41. The GO-based ternary composite can be a feasible and scalable adsorbent for BB41 in wastewater treatment.
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Affiliation(s)
- Md Shahinoor Islam
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh.
| | - Hridoy Roy
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
| | - Tasnim Ahmed
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
| | - Shakhawat H Firoz
- Department of Chemistry, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
| | - Scott X Chang
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada.
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Ma A, Qian H, Liu H, Ren S. Degradation of malachite green by g-C 3N 4-modified magnetic attapulgite composites under visible-light conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:96360-96375. [PMID: 37572254 DOI: 10.1007/s11356-023-29201-5] [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: 03/08/2023] [Accepted: 08/02/2023] [Indexed: 08/14/2023]
Abstract
Water resources are seriously threatened by dye wastewater, and the removal of the dye molecules from the wastewater has garnered considerable interest. People have favored photocatalytic technology in recent years for the treatment of dye wastewater. In this work, attapulgite (ATP) was used as a carrier, Fe3O4 and g-C3N4 were grafted onto ATP, and the surface was then modified with polyethyleneimine (PEI) to produce photocatalyst ATP-Fe3O4-g-C3N4-PEI, which was used in Malachite green (MG) dye wastewater. The structure and surface properties of the composites were analyzed and characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray spectrum (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Uv-vis spectrum analysis, zeta potential measurement, and vibrating-sample magnetometry (VSM) analysis. The removal performance of ATP-Fe3O4-gC3N4-PEI for MG was studied, and the removal mechanism was explored and revealed. It has been shown that the heterojunction formed by Fe3O4 and g-C3N4 can inhibit the compounding of photogenerated electrons and holes, effectively improving the performance of the ATP-Fe3O4-g-C3N4-PEI. Electron paramagnetic resonance (EPR) analysis confirmed that ATP-Fe3O4-g-C3N4-PEI could generate hydroxyl radicals (·OH) and superoxide radicals (·O2-) to degrade the MG. It was believed that ATP-Fe3O4-g-C3N4-PEI could generate hydroxyl radicals (·OH) through the photocatalysis and the Fenton reaction of the composite materials. Under the action of H+, ·O2-, and ·OH, the removal rate of MG by ATP-Fe3O4-g-C3N4-PEI exceeded 98 % at an optimal condition. The intermediate products and degradation pathways of MG degradation were also inferred by LC-MS analysis. These results showed that the prepared photocatalyst has excellent degradation performance for MG and could be used in dye wastewater treatment.
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Affiliation(s)
- Aishun Ma
- Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, People's Republic of China
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, People's Republic of China
| | - Hanlin Qian
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, People's Republic of China
| | - Hongxia Liu
- Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, People's Republic of China
| | - Sili Ren
- Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, People's Republic of China.
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, People's Republic of China.
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Rudayni HA, Shemy MH, Aladwani M, Alneghery LM, Abu-Taweel GM, Allam AA, Abukhadra MR, Bellucci S. Synthesis and Biological Activity Evaluations of Green ZnO-Decorated Acid-Activated Bentonite-Mediated Curcumin Extract (ZnO@CU/BE) as Antioxidant and Antidiabetic Agents. J Funct Biomater 2023; 14:jfb14040198. [PMID: 37103288 PMCID: PMC10146122 DOI: 10.3390/jfb14040198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/01/2023] [Accepted: 03/07/2023] [Indexed: 04/28/2023] Open
Abstract
Green ZnO-decorated acid-activated bentonite-mediated curcumin extract (ZnO@CU/BE) was prepared as a multifunctional antioxidant and antidiabetic agent based on the extract of curcumin, which was used as a reducing and capping reagent. ZnO@CU/BE showed notably enhanced antioxidant properties against nitric oxide (88.6 ± 1.58%), 1,1-diphenyl-2-picrylhydrazil (90.2 ± 1.76%), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid (87.3 ± 1.61%), and superoxide (39.5 ± 1.12%) radicals. These percentages are higher than the reported values of ascorbic acid as a standard and the integrated components of the structure (CU, BE/CU, and ZnO). This signifies the impact of the bentonite substrate on enhancing the solubility, stability, dispersion, and release rate of the intercalated curcumin-based phytochemicals, in addition to enhancing the exposure interface of ZnO nanoparticles. Therefore, effective antidiabetic properties were observed, with significant inhibition effects on porcine pancreatic α-amylase (76.8 ± 1.87%), murine pancreatic α-amylase (56.5 ± 1.67%), pancreatic α-glucosidase (96.5 ± 1.07%), murine intestinal α-glucosidase (92.5 ± 1.10%), and amyloglucosidase (93.7 ± 1.55%) enzymes. These values are higher than those determined using commercial miglitol and are close to the values measured using acarbose. Hence, the structure can be applied as an antioxidant and antidiabetic agent.
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Affiliation(s)
- Hassan Ahmed Rudayni
- Department of Biology, College of Science, Imam Muhammad bin Saud Islamic University, Riyadh 11623, Saudi Arabia
| | - Marwa H Shemy
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
- Materials Technologies and Their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65214, Egypt
| | - Malak Aladwani
- Department of Biology, College of Science, Imam Muhammad bin Saud Islamic University, Riyadh 11623, Saudi Arabia
| | - Lina M Alneghery
- Department of Biology, College of Science, Imam Muhammad bin Saud Islamic University, Riyadh 11623, Saudi Arabia
| | - Gasem M Abu-Taweel
- Department of Biology, College of Science, Jazan University, P.O. Box 2079, Jazan 45142, Saudi Arabia
| | - Ahmed A Allam
- Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Mostafa R Abukhadra
- Materials Technologies and Their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65214, Egypt
- Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65214, Egypt
| | - Stefano Bellucci
- INFN-Laboratori Nazionali di Frascati, Via. E. Fermi 54, 00044 Frascati, Italy
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Kumar Ben S, Gupta S, Kumar Raj K, Chandra V. Adsorption of Malachite Green from Polyaniline Facilitated Cobalt Phosphate Nanocomposite from Aqueous Solution. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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Cao Y, Guo Q, Miao Z, Tang B, Ma Y, Zhao J, Song H. Cr(VI) removal from contaminated waters using ultra-thin layered meixnerite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:9725-9737. [PMID: 36063270 DOI: 10.1007/s11356-022-22713-6] [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: 04/23/2022] [Accepted: 08/21/2022] [Indexed: 06/15/2023]
Abstract
Cr(VI) is of great concern to public health and environmental safety due to its high toxicity. Here, we report a low-cost yet highly efficient method to prepare a novel LDH, ultra-thin layered meixnerite, which performed superiorly in treatment of aqueous Cr(VI) with little secondary pollution being induced. The produced ultra-thin layered meixnerite was composed of nanoparticles with a thickness of around 7 nm, less than 9 times the thickness of a single LDH layer. The XRD patterns of the ultra-thin layered meixnerite, in which the characteristic diffraction peaks of a typical LDH were weakened or even disappeared, confirmed the successful delamination. This special morphology of the ultra-thin layered meixnerite was not only helpful to its full dispersion in the Cr(VI)-bearing solutions but also facilitated the formation of more active sorption sites on its external surface. As a result, the maximum sorption capacity of UTLM for Cr(VI) removal was 480.9 mg g-1, far higher than that of OM (196.9 mg g-1). In addition to electrostatic attraction and anion exchange, the ultra-thin layered meixnerite could also become restacked during removal of aqueous Cr(VI) to generate inner-sphere complexation, finally inducing an enhanced Cr(VI) uptake. Furthermore, XPS analysis characterized the promotion of the break of Al-OH bond with the increase in temperature, and the Cr-O peak increased correspondingly from 29.69% at 25 °C to 48.77% at 85 °C, resulting that the ultra-thin layered meixnerite could remove Cr(VI) more effectively at higher reaction temperatures. Therefore, ultra-thin layered meixnerite is very suitable for future application in treatment of industrial wastewaters with elevated temperatures.
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Affiliation(s)
- Yaowu Cao
- State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, 430074, Wuhan, Hubei, People's Republic of China
| | - Qinghai Guo
- State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, 430074, Wuhan, Hubei, People's Republic of China.
| | - Zheyan Miao
- State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, 430074, Wuhan, Hubei, People's Republic of China
| | - Baochun Tang
- Institute of Hydrogeology, Engineering and Environmental Geology Survey of Qinghai Province, Key Laboratory of Hydrogeology and Geothermal Geology of Qinghai Province, 810008, Xining, Qinghai, People's Republic of China
| | - Yuehua Ma
- Institute of Hydrogeology, Engineering and Environmental Geology Survey of Qinghai Province, Key Laboratory of Hydrogeology and Geothermal Geology of Qinghai Province, 810008, Xining, Qinghai, People's Republic of China
| | - Jie Zhao
- State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, 430074, Wuhan, Hubei, People's Republic of China
| | - Hongyu Song
- State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, 430074, Wuhan, Hubei, People's Republic of China
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Zhang Y, Haris M, Zhang L, Zhang C, Wei T, Li X, Niu Y, Li Y, Guo J, Li X. Amino-modified chitosan/gold tailings composite for selective and highly efficient removal of lead and cadmium from wastewater. CHEMOSPHERE 2022; 308:136086. [PMID: 35998726 DOI: 10.1016/j.chemosphere.2022.136086] [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: 05/18/2022] [Revised: 07/30/2022] [Accepted: 08/14/2022] [Indexed: 06/15/2023]
Abstract
In this work, a novel amino-modified chitosan/tailings composite (CS-PEI-nGT) was successfully synthesized from gold tailings particle treated by ball milling (nGT), chitosan (CS) and polyethyleneimine (PEI) as raw materials, for Lead (Pb(Ⅱ)) and Cadmium (Cd(Ⅱ)) removal from aqueous solutions. The CS-PEI-nGT was characterized by using FTIR, XRD, SEM, BET, TGA and XPS techniques. The results showed that CS-PEI-nGT had maximum adsorption capacity of 192.78 mg·g-1 and 99.46 mg·g-1 for Pb(Ⅱ) and Cd(Ⅱ) respectively at pH 5. The adsorption kinetics was described well by pseudo-second-order kinetic adsorption model, and suggested that chemisorption as the rate-controlling step for adsorption of Pb(Ⅱ) and Cd(Ⅱ). The isotherm data was accurately explained by Langmuir model with higher correlation coefficient (R2) of 0.9911 and 0.9642 for Pb(Ⅱ) and Cd(Ⅱ) respectively. In addition, CS-PEI-nGT retained its selective adsorption capacity for Pb(Ⅱ) and Cd(Ⅱ), compared to other metals such as Zn(Ⅱ), Mn(Ⅱ), Mg(Ⅱ) and Al(Ⅲ). The mechanism of the adsorption was investigated and the results revealed that amino (-NH2), silicon oxide groups (Si-O) and hydroxyl (-OH) functional groups on composite surface were accountable for metals adsorption, suggesting surface complexation, electrostatic interactions and ion exchange. Our work presents a promising strategy for tailings recycling and highly efficient removal of toxic metals ions from wastewater.
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Affiliation(s)
- Yi Zhang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Muhammad Haris
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Lei Zhang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Chao Zhang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Ting Wei
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Xiang Li
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Yuhua Niu
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Yongtao Li
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China; College of Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China
| | - Junkang Guo
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China.
| | - Xiaojing Li
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China.
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Maria Jose L, Anna Thomas S, Aravind A, Ma YR, Anil Kadam S. Effect of Ni Doping on the Adsorption and Visible light Photocatalytic Activity of ZnO Hexagonal Nanorods. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Rostamzadeh D, Sadeghi S. Ni doped zinc oxide nanoparticles supported bentonite clay for photocatalytic degradation of anionic and cationic synthetic dyes in water treatment. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Khalaj M, Zarandi M. A Cu(ii) complex supported on Fe 3O 4@SiO 2 as a magnetic heterogeneous catalyst for the reduction of environmental pollutants. RSC Adv 2022; 12:26527-26541. [PMID: 36275142 PMCID: PMC9486508 DOI: 10.1039/d2ra04787j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/03/2022] [Indexed: 11/21/2022] Open
Abstract
Today, the presence of pollutants in the environment has become one of the serious problems and concerns of human beings. To eliminate these pollutants, researchers have made many efforts. One of the most important of these efforts is the reduction of such contaminants in the presence of effective catalysts. Two of the most important and widespread types of these pollutants are nitro compounds and organic dyes. In this paper, we report the synthesis of an efficient and reusable magnetic catalyst using Fe3O4@SiO2 core-shell nanoparticles (NPs), N-(4-bromophenyl)-N'-benzoylthiourea, and copper(ii). Specifically, the Cu(ii)-N-(4-bromophenyl)-N'-benzoylthiourea complex supported on Fe3O4-core magnetic NPs (CM)/SiO2-shell (SS) (CM@SS-BBTU-Cu(ii)) has been prepared. CM@SS-BBTU-Cu(ii) was characterized by FT-IR (Fourier transform infrared spectroscopy), XRD (X-ray diffraction), TEM (transmission electron microscopy), HRTEM (high resolution transmission electron microscopy), FFT (fast Fourier transform), VSM (vibrating sample magnetometry), TG-DTA (thermogravimetry-differential thermal analysis), STEM (scanning transmission electron microscopy), EDS (energy-dispersive X-ray spectroscopy), and elemental mapping. The synthesized CM@SS-BBTU-Cu(ii) was applied for the reduction of 4-nitrophenol (4-NP), Congo red (CR), and methylene blue (MB) in the presence of NaBH4 (sodium borohydride) at room temperature. CM@SS-BBTU-Cu(ii) can be recycled and reused 5 times. Our results displayed that the performance of the catalyst was not significantly reduced by recycling.
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Affiliation(s)
- Mehdi Khalaj
- Department of Chemistry, Islamic Azad University Buinzahra Branch Buinzahra Iran +98 2834226118 +98 2834226112
| | - Maryam Zarandi
- Department of Chemistry, Islamic Azad University Buinzahra Branch Buinzahra Iran +98 2834226118 +98 2834226112
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Removal of Malachite Green Dye from Water Using MXene (Ti3C2) Nanosheets. SUSTAINABILITY 2022. [DOI: 10.3390/su14105996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In the present study, new emerging 2D Mxene nanosheets (MXNSs) were synthesized from MAX phase powders of Ti3AlC2 and then characterized using a scanning electron microscope (SEM) and X-ray diffraction (XRD) to explore the chemical and physical properties of the prepared MXNS. The characterization of the synthesized MXNS indicated the formation of exfoliated 2D MXene nanosheets (Ti3C2) as a result of the HF treatment of the MAX phase, which was confirmed by XRD measurements, as the characteristic peaks of 2D MXene nanosheets were only observed. The synthesized MXNS was then used as a solid adsorbent for removing malachite green dye (MG) from water. The effects of different operational factors such as MXNS dose, solution temperature, time, MG concentration, solution pH, and ionic strength have also been evaluated. The adsorption results showed that the temperature of the solution, as well as its pH, significantly influenced MG removal when using MXNS. The optimum removal was obtained within 150 min, with 20 mg of MXNS at ambient temperature and a pH value of 6.0. The maximum removal capacity obtained was 4.6 mg MG per g of MXNS using 5 mg of MXNS with a removal efficacy of 46.0%, and the minimum removal capacity obtained was 2.5 mg MG per g of MXNS using 20 mg of MXNS with a removal efficacy of 99.1%. Finally, the results displayed that the MXNS solid adsorbent was able to absorb a high percentage of MG and maintained reasonable efficiency for four consecutive cycles, indicating that MXNS could be a promising adsorbent in wastewater remediation and environmental sustainability.
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Abukhadra MR, Saad I, Othman SI, Allam AA, Fathallah W. Synthesis of Co3O4 @ Organo/Polymeric Bentonite Structures as Environmental Photocatalysts and Antibacterial Agents for Enhanced Removal of Methyl Parathion and Pathogenic Bacteria. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02346-5] [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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14
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Li K, Zhang Y, Zhang X, Ni BJ, Wei Y, Xu B, Hao D. A readily synthesized bismuth oxyiodide/attapulgite for the photodegradation of tetracycline under visible light irradiation. CrystEngComm 2022. [DOI: 10.1039/d2ce00205a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Bismuth oxyiodide and attapulgite have proven to be potential materials for the removal of emerging contaminants in wastewater.
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Affiliation(s)
- Kuangjun Li
- School of Science, China University of Geosciences: Beijing, Beijing, 100083, China
| | - Yuxi Zhang
- School of Science, China University of Geosciences: Beijing, Beijing, 100083, China
| | - Xiuli Zhang
- School of Science, China University of Geosciences: Beijing, Beijing, 100083, China
| | - Bing-Jie Ni
- Centre for Technology in Water and Wastewater (CTWW), School of Civil and Environmental Engineering, University of Technology Sydney (UTS), Ultimo, NSW 2007, Australia
| | - Yunxia Wei
- College of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou, Gansu, 730070, China
| | - Bentuo Xu
- School of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang, 325035, China
| | - Derek Hao
- Centre for Technology in Water and Wastewater (CTWW), School of Civil and Environmental Engineering, University of Technology Sydney (UTS), Ultimo, NSW 2007, Australia
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15
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Arshad A, Nisar TQ, Zulqurnain M, Niazi RK, Mansoor Q. SnO 2nanorods/graphene nanoplatelets nanocomposites: towards fast removal of malachite green and pathogen control. NANOTECHNOLOGY 2021; 33:115101. [PMID: 33946055 DOI: 10.1088/1361-6528/abfdef] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
The world is facing alarming challenges of environmental pollution due to uncontrolled water contamination and multiple drug resistance of pathogens. However, these challenges can be addressed by using novel nanocomposites materials such as, SnO2/graphene nanopaletelets (GNPs) nanocomposites remarkably. In this work, we have prepared SnO2nanorods and SnO2/GNPs nanocomposites (GS-I and GS-II) with size of 25 ± 6 nm in length and 4 ± 2 nm in diameter. The optical bandgap energies change from 3.14 eV to 2.80 eV in SnO2and SnO2/GNPs nanocomposite. We found that SnO2/GNPs nanocomposite (GS-II) completely removes (99.11%) malachite green in 12 min, under UV light exposure, while under same conditions, SnO2nanorods removes only 37% dye. Moreover, visible light exposure resulted in 99.01% removal of malachite green in 15 min by GSII as compared to 24.7% removal by SnO2. In addition, GS-II nanocomposite inhibits 79.57% and 78.51% growth ofP. aeruginosaandS. aureusrespectively. A synchronized contribution of SnO2and GNPs makes SnO2/GNPs nanocomposites (GS-II) an innovative multifunctional material for simultaneous fast and complete removal of malachite green and inhibition of drug resistant pathogens.
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Affiliation(s)
- Aqsa Arshad
- Department of Physics, International Islamic University, Islamabad, Pakistan
- Cambridge Graphene Centre, The University of Cambridge, 9 JJ Thomson Avenue Cambridge CB3 0FA, United Kingdom
| | - Tahira Qamar Nisar
- Department of Physics, International Islamic University, Islamabad, Pakistan
| | - Muhammad Zulqurnain
- Department of Physics, The University of Cambridge, 9 JJ Thomson Avenue Cambridge CB3 0FA, United Kingdom
| | - Robina Khan Niazi
- Department of Biological Sciences, International Islamic University, Islamabad, Pakistan
| | - Qaisar Mansoor
- Institute of Biomedical and Genetic Engineering, Islamabad, Pakistan
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16
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Bi J, Tao Q, Huang X, Wang J, Wang T, Hao H. Simultaneous decontamination of multi-pollutants: A promising approach for water remediation. CHEMOSPHERE 2021; 284:131270. [PMID: 34323782 DOI: 10.1016/j.chemosphere.2021.131270] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 05/08/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
Water remediation techniques have been extensively investigated due to the increasing threats of soluble pollutants posed on the human health, ecology and sustainability. Confronted with the complex composition matrix of wastewater, the simultaneous elimination of coexisting multi-pollutants remains a great challenge due to their different physicochemical properties. By integrating multi-contaminants elimination processes into one unit operation, simultaneous decontamination attracted more and more attention under the consideration of versatile applications and economical benefits. In this review, the state-of-art simultaneous decontamination methods were systematically summarized as chemical precipitation, adsorption, photocatalysis, oxidation-reduction, biological removal and membrane filtration. Their applications, mechanisms, mutual interactions, sustainability and recyclability were outlined and discussed in detail. Finally, the prospects and opportunities for future research were proposed for further development of simultaneous decontamination. This work could provide guidelines for the design and fabrication of well-organized simultaneous decontaminating system.
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Affiliation(s)
- Jingtao Bi
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Qingqing Tao
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Xin Huang
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Co-Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China.
| | - Jingkang Wang
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Co-Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China; State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou, China
| | - Ting Wang
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Co-Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| | - Hongxun Hao
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Co-Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China; State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou, China.
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17
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Hassan W, Ahmed EA, Moneim MA, Shaban MS, El-Sherbeeny AM, Siddiqui N, Shim JJ, Abukhadra MR. Sulfonation of Natural Carbonaceous Bentonite as a Low-Cost Acidic Catalyst for Effective Transesterification of Used Sunflower Oil into Diesel; Statistical Modeling and Kinetic Properties. ACS OMEGA 2021; 6:31260-31271. [PMID: 34841170 PMCID: PMC8613855 DOI: 10.1021/acsomega.1c05021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 11/08/2021] [Indexed: 06/13/2023]
Abstract
Bentonite sample enriched in organic matters (oil shale) was functionalized with -SO3H sulfonated carbonaceous bentonite (S-CB) by sulfonation process as a low-cost and effective acidic catalyst for the transesterification spent sunflower oil (SFO). The sulfonation effect was followed by several analytic techniques including X-ray diffraction, Fourier transform infrared, and scanning electron microscopy analysis. The catalytic performance of the sulfonated product was evaluated based on a statistical design which was built according to the response surface methodology and the central composite rotatable design. Using the S-CB acidic catalyst in the transesterification of spent SFO resulted in an actual biodiesel yield of 96% at studied conditions of 85 min at reaction interval, 50 °C as temperature,15:1 as methanol/oil ratio, and 3.5 wt % as S-CB loading. Moreover, the optimization function suggested enhancement to obtained yield up to 97.9% by selecting the values of temperature at 62 °C, the time at 98.5 min, the methanol/SFO ratio at 14.4:1, and S-CB loading at 3.4 wt %. The technical evaluation of the SFO biodiesel reflected the suitability of the product to be used as biofuels according to international standards. The kinetic behavior of the SFO transesterification reaction over S-CB is of pseudo-first order properties and of low activation energy. Finally, the synthetic S-CB as a solid acidic catalyst is of significant reusability and was reused five times with remarkable biodiesel yields.
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Affiliation(s)
- Walaa
A. Hassan
- Geology
Department, Faculty of Science, Assiut University, Assiut 71515, Egypt
| | - Ezzat A. Ahmed
- Geology
Department, Faculty of Science, Assiut University, Assiut 71515, Egypt
| | - Mohamed A. Moneim
- Geology
Department, Faculty of Science, Assiut University, Assiut 71515, Egypt
| | - Mohamed S. Shaban
- Geology
Department, Faculty of Science, New Valley
University, El-Kharga 72511, Egypt
| | - Ahmed M. El-Sherbeeny
- Industrial
Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
| | - Nahid Siddiqui
- Amity
Institute of Biotechnology, Amity University, Noida 201301, India
| | - Jae-Jin Shim
- School
of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Republic of Korea
| | - Mostafa R. Abukhadra
- Geology Department,
Faculty of Science, Beni-Suef University, Beni Suef 62511, Egypt
- Materials
Technologies and Their Applications Lab, Geology Department, Faculty
of Science, Beni-Suef University, Beni Suef 62511, Egypt
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18
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Qaiyum MA, Mohanta J, Kumari R, Samal PP, Dey B, Dey S. Alkali treated water chestnut (Trapa natans L.) shells as a promising phytosorbent for malachite green removal from water. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 24:822-830. [PMID: 34592852 DOI: 10.1080/15226514.2021.1977912] [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] [Indexed: 06/13/2023]
Abstract
Search for eco-friendly adsorbents for sustainable dye treatment is on the rise. The present study demonstrated the enhanced removal of malachite green (MG) with alkali-modified shells of water chestnut (AWCN) under optimized physio-chemical parameters. Alkali treatment significantly reduces the lignocellulosic components which in turn increased the water stability. The material was been characterized by pHzpc, FTIR, FESEM-EDAX, and BET surface area analysis. pH-dependent adsorption was noticed and the maximum adsorption capacity was determined as 136.46 mg/g. Adsorption followed pseudo-second-order kinetics (R2=0.99) and Langmuir isotherm model (R2=0.99). Thermodynamic parameters suggested that the adsorption process is spontaneous (ΔG°= -2.99 kJ/mol), favorable and endothermic (ΔH°=34.72 kJ/mol). Simple regeneration allows multi-cycle use with minimal loss of activity. The mechanism has been proposed to be a combination of electrostatic interaction, H-bonding, and π-π stacking between AWCN and MG. In conclusion, alkali modification of Trapa natans L. shells provides excellent removal of MG from water.
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Affiliation(s)
- Md Atif Qaiyum
- Department of Chemistry, Central University of Jharkhand, Ranchi, India
| | - Jhilirani Mohanta
- Department of Chemistry, Central University of Jharkhand, Ranchi, India
| | - Roshni Kumari
- Department of Chemistry, Central University of Jharkhand, Ranchi, India
| | | | - Banashree Dey
- Department of Chemistry, The Graduate School College for Women, Jamshedpur, India
| | - Soumen Dey
- Department of Chemistry, Central University of Jharkhand, Ranchi, India
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19
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Wang Q, Zhang X, Wang F, Xie Y, Wang C, Zhao J, Yang Q, Chen Z. Egg yolk/ZIF-8/CLPAA composite aerogel: Preparation, characterization and adsorption properties for organic dyes. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122158] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Mg-Al/Biochar Composite with Stable Structure for Malachite Green Adsorption from Aqueous Solutions. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2021. [DOI: 10.9767/bcrec.16.1.10270.149-160] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Mg-Al-layered double hydroxide (LDH) was fabricated using a coprecipitation method at pH 10. Thereafter, Mg-Al-LDH was impregnated with biochar to manufacture a Mg-Al/Biochar composite. The composite was characterized using powder X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, N2 adsorption—desorption, thermogravimetry-differential thermal analysis (TG-DTA), and scanning electron microscopy (SEM) experiments, and was subsequently used for malachite green (MG) adsorption. MG adsorption experiments were performed in a batch system, and the effects of temperature and adsorption kinetic and isotherm parameters on the adsorption process were analyzed. The stability of Mg-Al/Biochar was evaluated using regeneration experiments over three cycles. The peaks at 11.47° (003), 22.86° (002), 34.69° (012), and 61.62° (116), in the XRD profile of Mg-Al/Biochar suggested that Mg-Al/Biochar was successfully fabricated. The surface area of Mg-Al/Biochar was up to five times larger than that of pristine Mg-Al-LDH. The adsorption of MG on Mg-Al/Biochar was dominated by interactions at the surface of the adsorbent and was classified as physical adsorption; moreover the maximum adsorption capacity ofMg-Al/Biochar was 70.922 mg/g. Furthermore, the MG removal of Mg-Al/Biochar during three successive adsorption cycles (i.e. 66.73%, 65.57%, and 65.77% for the first, second, and third adsorption cycle) did not change significantly, which indicated the stable structure of the adsorbent. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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21
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Palapa NR, Taher T, Mohadi R, Rachmat A, Mardiyanto M, Miksusanti M, Lesbani A. NiAl-layered double hydroxide intercalated with Keggin polyoxometalate as adsorbent of malachite green: kinetic and equilibrium studies. CHEM ENG COMMUN 2021. [DOI: 10.1080/00986445.2021.1895773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- N. R. Palapa
- Graduate School of Mathematics and Natural Sciences Faculty, Sriwijaya University, Ogan Ilir, South Sumatra, Indonesia
| | - T. Taher
- Department of Environmental Engineering, Institut Teknologi Sumatera, Jalan Terusan Ryacudu, Way Hui, Kecamatan Jati Agung, Lampung Selatan 35365
| | - R. Mohadi
- Research Center of Inorganic Materials and Coordination Complexes, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Ogan Ilir, Indonesia
| | - A. Rachmat
- Graduate School of Mathematics and Natural Sciences Faculty, Sriwijaya University, Ogan Ilir, South Sumatra, Indonesia
| | - M. Mardiyanto
- Department of Pharmacy, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Ogan Ilir, South Sumatra, Indonesia
| | - M. Miksusanti
- Graduate School of Mathematics and Natural Sciences Faculty, Sriwijaya University, Ogan Ilir, South Sumatra, Indonesia
| | - A. Lesbani
- Graduate School of Mathematics and Natural Sciences Faculty, Sriwijaya University, Ogan Ilir, South Sumatra, Indonesia
- Research Center of Inorganic Materials and Coordination Complexes, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Ogan Ilir, Indonesia
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22
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Low-cost Zeolite/TiO2 composite for the photocatalytically enhanced adsorption of Cd2+ from aqueous solution. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2021. [DOI: 10.1007/s13738-021-02179-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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23
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AbuKhadra MR, Eid MH, Allam AA, Ajarem JS, Almalki AM, Salama Y. Evaluation of different forms of Egyptian diatomite for the removal of ammonium ions from Lake Qarun: A realistic study to avoid eutrophication. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115277. [PMID: 32777697 DOI: 10.1016/j.envpol.2020.115277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/18/2020] [Accepted: 07/23/2020] [Indexed: 06/11/2023]
Abstract
Three types of diatomite-based adsorbents-diatomaceous earth (DE), purified diatomite (PD), and diatomite@MgO/CaO (D@MgO) were used for adsorption decontamination of ammonium from Lake Qarun water (28.7 mg/L). The adsorption properties of the three diatomite-based adsorbents were evaluated by both batch and fixed-bed column adsorption studies. The kinetic results demonstrated removal percentages of 97.2%, 69.5%, and 100% using DE, PD, and D@MgO, respectively, at a 1 g/L adsorbent dosage. The adsorption results using DE and D@MgO showed the best fitness with pseudo-first-order kinetic and Langmuir isotherm models, while the obtained results using PD demonstrate better fitness with the Freunlidich model. The recognised fitting results with the pseudo-first-order model and estimated adsorption energies demonstrated physical uptake of ammonium by DE (5.93 kJ/mol), PD (4.05 kJ/mol), and D@MgO (7.81 kJ/mol). The theoretical maximum ammonium uptake capacity of DE, PD, and D@MgO were 63.16 mg/g, 59.5 mg/g, and 78.3 mg/g, respectively. Using synthetic adsorbents in a fixed-bed column system for treating ammonium ions in Lake Qarun water resulted in removal percentages of 57.4%, 53.3%, and 62.6% using a DE bed, PD bed, and D@MgO bed, respectively, after treating approximately 7.2 L of Lake Qarun water using a bed thickness of 3 cm, a flow rate of 5 mL/min, pH 8, and the determined ammonium concentration in Lake Qarun water (28.7 mg/L). The curves demonstrated breakthrough times of 900 min, 900 min, and 960 min for the DE bed, PD bed, and D@MgO bed, respectively, with 1440 min as the saturation time. The columns' performances also were studied based on the Thomas model, the Adams-Bohart model, and the Yoon-Nelson model.
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Affiliation(s)
- Moustafa R AbuKhadra
- Geology Department, Faculty of Science, Beni-suef University, Beni-Suef, 65211, Egypt; Materials Technologies and Their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef City, Egypt.
| | - Mohamd Hamdy Eid
- Geology Department, Faculty of Science, Beni-suef University, Beni-Suef, 65211, Egypt; Materials Technologies and Their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef City, Egypt
| | - Ahmed Aly Allam
- Department of Zoology, Faculty of Science, Beni-suef University, Beni-Suef, 65211, Egypt
| | - Jamaan S Ajarem
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Ahmed M Almalki
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Yasser Salama
- Geology Department, Faculty of Science, Beni-suef University, Beni-Suef, 65211, Egypt
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