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Şahin HG, Temel M, Koçak G, Mardani A, Kara A. Effect of nano-TiO 2 size and utilization ratio on the performance of photocatalytic concretes; self-cleaning, fresh, and hardened state properties. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:37109-37124. [PMID: 38760607 PMCID: PMC11182830 DOI: 10.1007/s11356-024-33660-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 05/08/2024] [Indexed: 05/19/2024]
Abstract
In this study, photocatalysis technology was used to reduce water pollution. Decolorization of Reactive Black 5 using nano-TiO2 (NT) as a photocatalyst was investigated by adsorption and degradation experiments. Effects of NT particle size and utilization ratio on the time-dependent flow performance, compressive-flexural strength, and Bohme abrasion resistance of cementitious systems were investigated. In addition to the NT-free control mixture, a total of six photocatalytic self-cleaning mortar mixtures (PSCM) were prepared using NT in two different particle sizes (28 and 38 nm) and three different ratios (0.5%, 1%, and 1.5%). The PSCM sample containing 38 nm NT exhibited superior performance in terms of photocatalytic properties compared to the 28 nm state. It was observed that the flow performance of PSCM mixtures with NT substitution is adversely affected regardless of the NT type. Mixtures containing NT with a lower particle size (28 nm) had higher compressive and flexural strengths.
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Affiliation(s)
| | - Müge Temel
- Department of Civil Engineering, Bursa Uludag University, Bursa, Turkey
| | - Gözde Koçak
- Department of Chemistry, Bursa Uludag University, Bursa, Turkey
| | - Ali Mardani
- Department of Civil Engineering, Bursa Uludag University, Bursa, Turkey.
| | - Ali Kara
- Department of Chemistry, Bursa Uludag University, Bursa, Turkey
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Fauzia, Khan MA, Chaman M, Azam A. Antibacterial and sunlight-driven photocatalytic activity of graphene oxide conjugated CeO 2 nanoparticles. Sci Rep 2024; 14:6606. [PMID: 38503811 PMCID: PMC10951321 DOI: 10.1038/s41598-024-54905-0] [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: 10/10/2023] [Accepted: 02/18/2024] [Indexed: 03/21/2024] Open
Abstract
This work focuses on the structural, morphological, optical, photocatalytic, antibacterial properties of pure CeO2 nanoparticles (NPs) and graphene oxide (GO) based CeO2 nanocomposites (GO-1/CeO2, GO-5/CeO2, GO-10/CeO2, GO-15/CeO2), synthesized using the sol-gel auto-combustion and subsequent sonication method, respectively. The single-phase cubic structure of CeO2 NPs was confirmed by Rietveld refined XRD, HRTEM, FTIR and Raman spectroscopy. The average crystallite size was calculated using Debye Scherrer formula and found to increase from 20 to 25 nm for CeO2 to GO-15/CeO2 samples, respectively. The related functional groups were observed from Fourier transform infrared (FTIR) spectroscopy, consistent with the outcomes of Raman spectroscopy. The optical band gap of each sample was calculated by using a Tauc plot, which was observed to decrease from 2.8 to 1.68 eV. The valence state of Ce (Ce3+ and Ce4+) was verified using X-ray photoelectron spectroscopy (XPS) for CeO2 and GO-10/CeO2. The poisonous methylene blue (MB) dye was used to evaluate the photocatalytic activity of each sample in direct sunlight. The GO-15/CeO2 nanocomposite showed the highest photocatalytic activity with rate constant (0.01633 min-1), and it degraded the MB dye molecules by 100% within 120 min. The high photocatalytic activity of this material for degrading MB dye establishes it as an outstanding candidate for wastewater treatment. Further, these nanocomposites also demonstrated excellent antimicrobial activity against Pseudomonas aeruginosa PAO1.
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Affiliation(s)
- Fauzia
- Department of Applied Physics, Z.H. College of Engineering & Technology, Aligarh Muslim University, Aligarh, 202002, India
| | - Mo Ahamad Khan
- Department of Microbiology, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, UP, 202002, India
| | - Mohd Chaman
- Mewat Engineering College, Nuh, Mewat, Haryana, 122107, India
| | - Ameer Azam
- Department of Applied Physics, Z.H. College of Engineering & Technology, Aligarh Muslim University, Aligarh, 202002, India.
- Department of Physics, Faculty of Science, Islamic University of Madinah, 42351, Madinah, Saudi Arabia.
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Abdel-Raouf MS, Farag RK, Farag AA, Keshawy M, Abdel-Aziz A, Hasan A. Optimization, Kinetics, and Isotherm Studies of Methyl Thioninium Chloride Removal from Simulated Solutions Using Chitosan Derivatives. ACS OMEGA 2023; 8:33580-33592. [PMID: 37744862 PMCID: PMC10515362 DOI: 10.1021/acsomega.3c03735] [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: 05/27/2023] [Accepted: 08/23/2023] [Indexed: 09/26/2023]
Abstract
Methylene blue (MB) dye or methyl thioninium chloride is one of the hazardous cationic dyes that are discharged into the textile effluent causing a highly negative environmental impact. The present work targets the investigation of the adsorption performance of some chitosan-modified products toward the MB dye from simulated solutions. The claimed chitosan derivatives were prepared, characterized, and applied for the removal of lead and copper cations from an aqueous medium in a previous work. These include: N,O-carboxymethyl chitosan (N,O-CM/Cs), chitosan grafted with glutaraldehyde (Cs/GA), chitosan cross-linked with GA/epichlorohydrin (Cs/GA/ECH), and chitosan cross-linked with glutaraldehyde/methylene bis(acrylamide) (Cs/GA/MBA). The modified chitosan derivatives in this study displayed outstanding mechanical qualities, exceptional reusability, and a significant amount of adsorption capacity. The ability of prepared Cs derivatives to eradicate MB was as follows: N,O-CM/Cs (95.1 mg/g) < Cs/GA (120.1 mg/g) < Cs/GA/ECH (220.1 mg/g) < Cs/GA/MBA (270.0 mg/g). The swelling performance of the prepared sorbents was verified under different experimental conditions, and the data revealed that the maximum swelling was attained at pH = 9, temperature 55 °C, and after 24 h. The produced Cs derivatives showed exceptional reusability by maintaining higher adsorption effectiveness throughout five cycles. The MB dye was adsorbed onto the modified derivatives according to pseudo-second-order kinetics and the Langmuir model. Moreover, the adsorption process was monitored via atomic force microscopy to verify the differences between the dye-free and dye-loaded adsorbents.
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Affiliation(s)
| | - Reem Kamal Farag
- Egyptian Petroleum Research Institute, 1 Ahmed El-Zomor, Nasr City 11727, Cairo, Egypt
| | - Ahmed A. Farag
- Egyptian Petroleum Research Institute, 1 Ahmed El-Zomor, Nasr City 11727, Cairo, Egypt
| | - Mohamed Keshawy
- Egyptian Petroleum Research Institute, 1 Ahmed El-Zomor, Nasr City 11727, Cairo, Egypt
| | - Alaa Abdel-Aziz
- Egyptian Petroleum Research Institute, 1 Ahmed El-Zomor, Nasr City 11727, Cairo, Egypt
| | - Abdulraheim Hasan
- Egyptian Petroleum Research Institute, 1 Ahmed El-Zomor, Nasr City 11727, Cairo, Egypt
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Effect of Direct yellow 50 removal from an aqueous solution using Nano bentonite; Adsorption isotherm, kinetic analysis and also thermodynamic behavior. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Rahimi AA, Alihosseini F. Application of dye saturated clay adsorbent from dyeing wastewater as textile printing pigment. JOURNAL OF CHEMICAL TECHNOLOGY & BIOTECHNOLOGY 2022; 97:3152-3162. [DOI: 10.1002/jctb.7183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 07/05/2022] [Indexed: 09/02/2023]
Abstract
AbstractBackgroundAdsorption by cheap materials (like clay and activated carbon) is one of the most effective methods for treating dye wastewaters, especially for cationic dyes. Although activated carbon has a black residue, the unique nanostructure of clay adsorbs dye molecules between its layers and produces a colored sludge. Dye intercalated clays were also introduced as possible coloring pigments. This work tries to combine the wastewater treatment and hybrid pigment production processes so that the remaining sludge of the process can be used as a printing pigment.ResultsBentonite clay was examined for treating real dye wastewater from the textile industry containing four cationic dyes. The adsorption mechanism of all dyes was studied individually, and the results show that bentonite has a minimum adsorption capacity of 467 mg/g for Basic Red 46 dye based on the Langmuir model. The adsorption process decreased the turbidity by about 86% and reduced the total dissolved solids (TDS) and chemical oxygen demand (COD) of wastewater. The produced hybrid showed a nano‐layer structure according to the field emission scanning electron microscopy (FESEM). Differential thermal analysis (DTA) shows that the thermal stability of the pigment improved by about 30 °C compared to the pristine dye. Fourier transform infrared (FTIR) and thermogravimetric analysis (TGA) showed that the dye: bentonite ratio should be adjusted at a medium level to control the hydrophilicity of the hybrid and improve its miscibility in binders.ConclusionThe produced pigment was printed on cotton fabric with a desirable visual color appearance and showed acceptable rubbing and light fastnesses. The result indicates that wastewater sludge from this adsorption process could be applicable as an industrial pigment. © 2022 Society of Chemical Industry (SCI).
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Affiliation(s)
- Abd Allah Rahimi
- Department of Textile Engineering Isfahan University of Technology Isfahan Iran
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Brahimi B, Mekatel E, Kenfoud H, Berrabah SE, Trari M. Efficient removal of the antibiotic Cefixime on Mg 0.3Zn 0.7O under solar light: kinetic and mechanism studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:75512-75524. [PMID: 35655019 DOI: 10.1007/s11356-022-20626-y] [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: 01/06/2022] [Accepted: 04/30/2022] [Indexed: 06/15/2023]
Abstract
The heterogeneous photocatalysis is known to provide significant degradation and mineralization of emerging contaminants including antibiotics. For this, nanosized Mg0.3Zn0.7O (MZO) was prepared by nitrate route to be used as photocatalyst. The single-phase was confirmed by X-ray diffraction with a crystallite size of 33 nm. The morphology was visualized by scanning electron microscope/energy-dispersive X-ray analysis. The physicochemical properties were studied by the FTIR, XPS, and optical analyses. The diffuse reflectance gives a direct forbidden band of 3.26 eV. The electrochemical characterization showed an n-type semiconductor with a flat band of - 0.56 VAg/AgCl. The photodegradation of Cefixime (CFX) was carried out under solar light; the operating parameters such as the catalyst dose, solution pH, and initial CFX concentration (Co) were optimized. The best performance occurs at neutral pH ~ 6 within 4 h with an abatement of 94% for an initial CFX concentration of 5 mg/L and MZO dose of 0.75 g/L. The photodegradation follows a first-order kinetic with an apparent rate constant of 0.012 min-1. The effects of scavenging agents indicated the dominant role of hydroxyl •OH followed by the holes (h+). The results showed the potentiality of MZO as an environmentally friendly photocatalyst for CFX photodegradation.
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Affiliation(s)
- Billal Brahimi
- Laboratory of Transfer Phenomena, Faculty of Mechanical Engineering and Process Engineering, USTHB, BP 32, Algiers, Algeria.
| | - Elhadj Mekatel
- Laboratory of Transfer Phenomena, Faculty of Mechanical Engineering and Process Engineering, USTHB, BP 32, Algiers, Algeria
| | - Hamza Kenfoud
- Laboratory of Reaction Engineering, Faculty of Mechanical Engineering and Process Engineering, USTHB, 32, Algiers, BP, Algeria
| | - Salah Eddine Berrabah
- Laboratory of Electrochemistry-Corrosion, Metallurgy and Mineral Chemistry (L.E.C.M.C.M), Faculty of Chemistry, USTHB, BP 32, Algiers, Algeria
| | - Mohamed Trari
- Laboratory of Storage and Valorization of Renewable Energies, Faculty of Chemistry, USTHB, BP 32, Algiers, Algeria
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Lian S, Fan S, Yang Y, Yu B, Dai C, Qu Y. Selenium nanoparticles with photocatalytic properties synthesized by residual activated sludge. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 809:151163. [PMID: 34699821 DOI: 10.1016/j.scitotenv.2021.151163] [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: 07/03/2021] [Revised: 10/18/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
The treatment and disposal of residual activated sludge is a worldwide problem and the research on its reuse is still only in the earliest stages. Selenite is a toxic pollutant, while selenium nanoparticles (SeNPs) are environmentally friendly and have promising application prospects. At present, the reduction mechanism of selenite under the complex system is still poorly understood. In order to explore the mechanism of SeNPs synthesis by activated sludge resource utilization, SeNPs were synthesized by activated sludge extracts of domestic sewage (DSeNPs) and coking sewage (CSeNPs), respectively. The synthesis process, zeta potential and morphology size of SeNPs were changed by pH value, extract concentration and extract composition. Under the same synthesis conditions, the morphologies of DSeNPs and CSeNPs were mainly spherical and pseudo-spherical, while CSeNPs also contained pseudo-rod shape particles. The sizes and crystal grains of CSeNPs were smaller than those of DSeNPs. Compared with DSeNPs, a specific protein (~35 kDa) was found on the surface of CSeNPs using SDS-PAGE. By analyzing the fluorescence images of the two SeNPs, it was found that the relative contents of proteins, α-d-glucopyranose polysaccharides, and β-d-glucopyranose polysaccharides on their surfaces were obviously different (P < 0.05). The present study demonstrated that proteins, polysaccharides, humic-like and fulvic acid-like substances cooperated in the formation and stabilization of SeNPs. Furthermore, CSeNPs (bandgap: 1.68 eV) had more desirable photocatalytic performance than DSeNPs (bandgap: 1.84 eV). Under the light condition, CSeNPs could degrade Rhodamine B faster without adding hydrogen peroxide. This experiment provided a new insight into the resource utilization of activated sludge and a reference for the synthesis of nanometer selenium with excellent performance.
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Affiliation(s)
- Shengyang Lian
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Shuling Fan
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Ying Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Bin Yu
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Chunxiao Dai
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yuanyuan Qu
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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Lv B, Xu K, Fang C, Yang Q, Li N, Jiang P, Wang W. Study on the performance of laterite in removing graphene oxide contaminants from aqueous solution. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198211060481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To remove graphene oxide contaminant from aqueous solution, laterite was used as an adsorbent to conduct batch adsorption experiments on graphene oxide aqueous solutions. The effects of pH, adsorbent mass, graphene oxide initial concentration, contact time, and temperature on graphene oxide adsorption by laterite were studied predominantly. The results show that graphene oxide adsorption by laterite strongly depends on pH, the kinetic data conforms to the second-order kinetic model, and the isotherm data are in line with Langmuir and Freundlich models. Moreover, temperature increment is more conducive to improving the adsorption capacity. Combined with scanning electron microscopy, transmission electron microscopy, atomic force microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman microscopic tests, the internal changes of samples before and after adsorption were further revealed. The comprehensive analysis of the above experimental results shows that laterite is a good material, which can effectively remove graphene oxide contamination from aqueous solutions.
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Affiliation(s)
- Beifeng Lv
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Kaitong Xu
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Chulei Fang
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Qingqian Yang
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Na Li
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Ping Jiang
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Wei Wang
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
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Taheri N, Dinari M. Amino-Functionalized Magnetic Porous Organic Polymer for Selective Removal of Toxic Cationic Dyes from Textile Wastewater. NEW J CHEM 2022. [DOI: 10.1039/d2nj01754g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Porous organic polymers (POPs) with fascinating porous properties are promising candidates for the removal of organic dyes from textile wastewater. In this research work, an amino-functionalized magnetic POP (FC-POP-EDA@Fe3O4) containing...
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Taleghani MS, Tabrizi NS, Sangpour P. Enhanced visible-light photocatalytic activity of titanium dioxide doped CNT-C aerogel. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.01.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ahmouda K, Benhaoua B. Preferential and enhanced adsorption of methyl green on different greenly synthesized magnetite nanoparticles: investigation of the influence of the mediating plant extract’s acidity. RSC Adv 2022; 12:14593-14609. [PMID: 35702240 PMCID: PMC9100377 DOI: 10.1039/d2ra01085b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 04/26/2022] [Indexed: 12/27/2022] Open
Abstract
Four magnetite nanoparticle (NP) samples have been greenly synthesized using four aqueous plant extracts, which are Artemisia herba-alba (L), Rosmarinus officinalis (L), Matricaria pubescens (L), and Juniperus phoenicia (L). The pH of these extracts are acidic (5.25, 5.05, 4.63, and 3.69, respectively). The synthesized samples were characterized by XRD, SEM, ATR-FTIR, and UV-Vis. This work aimed to study the preferential and enhanced adsorption of methyl green (MG) on the four greenly synthesized Fe3O4 surfaces by coupling three processes: MG adsorption in ambient dark conditions as the first process, followed by the thermocatalysis of the MG/Fe3O4 residual solution in the second process, and finally photocatalysis by the UV irradiation of MG/Fe3O4 residual solution after carrying out thermocatalysis. The novelty of this study lies in highlighting the influence of the mediating plant extract’s acidity on the magnetite NPs’ physicochemical characteristics, which impact the preferential and enhanced MG adsorption. The studied physicochemical characteristics are the functional hydroxyl group density on the magnetite surface, grain size, and band gap energy. It was found that the plant extract’s acidity has a clear effect on the studied physicochemical properties. The analysis of the FTIR spectra showed that the hydroxyl group densities differ on the four magnetite samples. Furthermore, the calculated grain sizes of the magnetite samples based on XRD spectra data vary from 29.27 to 41.49 nm. The analysis of the UV-Vis spectra of the four magnetite samples showed that the estimated direct band gap energies vary from 2.87 to 2.97 eV. The obtained results showed that the decrease of the mediating plant extract’s acidity leads to an increase in the hydroxyl group density on magnetite surfaces, which resulted in an increase in the MG adsorption capacities and yields in the first process of adsorption. Thus, MG adsorption was more preferred on greenly synthesized magnetite surfaces mediated by plant extracts with low acidity (Artemisia herba-alba (L) and Rosmarinus officinalis (L)). Furthermore, the increase of the plant extract’s acidity leads to a decrease in the particle size and an increase in the band gap energy and, therefore, to the decrease of the electron/hole pair recombination speed upon electron excitation. So, magnetite greenly synthesized from a more acidic mediating plant extract showed higher thermo- and photocatalytic activities for MG adsorption (Juniperus phoenicia (L) and Matricaria pubescens (L)). However, under photocatalysis, the enhancement is even more significant compared to thermocatalysis. Magnetite NP samples synthesized from less acidic plant extracts have more dense active sites and prefer adsorbing more MG. The increase of plant extract acidity leads to the increase of the thermo- and photocatalytic activities of Fe3O4 NPs.![]()
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Affiliation(s)
- Kaouthar Ahmouda
- Department of Process Engineering and Petrochemistry, Faculty of Technology, University of El Oued, El Oued, 39000, Algeria
- Renewable Energy in Arid Zones Research Unit, University of El Oued, El Oued, 39000, Algeria
| | - Boubaker Benhaoua
- Department of Physics, Faculty of Exact Sciences, University of El Oued, El Oued, 39000, Algeria
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Kinetic and mechanism studies of tetracycline photodegradation using synthesized ZnAl2O4. REACTION KINETICS MECHANISMS AND CATALYSIS 2021. [DOI: 10.1007/s11144-021-02114-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Adsorption Behavior of Methylene Blue Dye by Novel CrossLinked O-CM-Chitosan Hydrogel in Aqueous Solution: Kinetics, Isotherm and Thermodynamics. Polymers (Basel) 2021; 13:polym13213659. [PMID: 34771216 PMCID: PMC8588159 DOI: 10.3390/polym13213659] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/10/2021] [Accepted: 10/13/2021] [Indexed: 11/27/2022] Open
Abstract
The chemical cross-linking of carboxymethyl chitosan (O-CM-chitosan), as a method for its modification, was performed using trimellitic anhydride isothiocyanate to obtain novel cross-linked O-CM-chitosan hydrogel. Its structure was proven using FTIR, XRD and SEM. Its adsorption capacity for the removal of Methylene Blue (MB) dye from aqueous solution was studied. The effects of different factors on the adsorption process, such as the pH, temperature and concentration of the dye, in addition to applications of the kinetic studies of the adsorption process, adsorption isotherm and thermodynamic parameters, were studied. It was found that the amount of adsorbed MB dye increases with increasing temperature. A significant increase was obtained in the adsorption capacities and removal percentage of MB dye with increasing pH values. An increase in the initial dye concentration increases the adsorption capacities, and decreases the removal percentage. It was found that the pseudo-second-order mechanism is predominant, and the overall rate of the dye adsorption process appears to be controlled by more than one step. The Langmuir model showed high applicability for the adsorption of MB dye onto O-CM-chitosan hydrogel. The value of the activation energy (Ea) is 27.15 kJ mol−1 and the thermodynamic parameters were evaluated. The regeneration and reuse of the investigated adsorbent was investigated.
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Isik B, Ugraskan V, Cankurtaran O. Effective biosorption of methylene blue dye from aqueous solution using wild macrofungus (Lactarius piperatus). SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.1956540] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Birol Isik
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, Turkey
| | - Volkan Ugraskan
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, Turkey
| | - Ozlem Cankurtaran
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Istanbul, Turkey
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Sackey EA, Song Y, Yu Y, Zhuang H. Biochars derived from bamboo and rice straw for sorption of basic red dyes. PLoS One 2021; 16:e0254637. [PMID: 34260652 PMCID: PMC8279399 DOI: 10.1371/journal.pone.0254637] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 07/01/2021] [Indexed: 11/19/2022] Open
Abstract
The primary purpose of this study is to eliminate Basic Red 46 dye from aqueous solutions utilizing batch experiments by adsorption on biochars prepared from bamboo and rice straw biomass. Biochars prepared from bamboo (B), and rice straw (R) was pyrolyzed at 500°C (B500 and R500). Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR) Spectroscopy, X-ray Diffraction (XRD), and surface area and porosity analyzers were used to characterize the B500 and R500 samples. The characterization results indicated that the biochars possessed an amorphous porous structure with many functional groups consisting primarily of silicates. The adsorption rate of BR46 was evaluated using two kinetic models (pseudo-first-order and pseudo-second-order), and the results indicated that the pseudo-second-order model fitted to the experimental data well (R2>0.99). Nearly 24 h was sufficient to achieve equilibrium with the dye adsorption for the two biochars. R500 had a greater adsorption efficiency than B500. As pH levels increased, the dye's adsorption capability increased as well. The Langmuir and Freundlich isotherm models were used to investigate the equilibrium behavior of BR46 adsorption, and the equilibrium data fitted well with the Langmuir model (R2>0.99) compared to the Freundlich model (R2>0.89). The maximum adsorption capacities of BR46 are 9.06 mg/g for B500 and 22.12 mg/g for R500, respectively. Additionally, adsorption capacity increased as temperature increased, indicating that adsorption is favored at higher temperatures. The electrostatic interaction is shown to be the dominant mechanism of BR46 adsorption, and BR46 acts as an electron-acceptor, contributing to n-π EDA (Electron Donor-Acceptor) interaction. Thermodynamic parameters for the dye-adsorbent system revealed that the adsorption process is spontaneous and feasible. The values of the adsorption coefficient (Kd) were on the order of 102-103. Kd of R500 was greater than that of B500, indicating that R500 had a greater adsorption capacity. The results showed that R500 could be used as a low-cost alternative adsorbent for removing BR46 from effluents.
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Affiliation(s)
- Ebenezer Ampofo Sackey
- School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China
| | - Yali Song
- School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China
- Key Laboratory of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China
| | - Ya Yu
- School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China
| | - Haifeng Zhuang
- School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China
- Key Laboratory of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China
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Ferfera-Harrar H, Benhalima T, Sadi A. Development of functional chitosan-based superabsorbent hydrogel nanocomposites for adsorptive removal of Basic Red 46 textile dye. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03795-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Fabrication of iron nanoparticles using Parthenium: A combinatorial eco-innovative approach to eradicate crystal violet dye and phosphate from the aqueous environment. ACTA ACUST UNITED AC 2021. [DOI: 10.1016/j.enmm.2021.100426] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Jadhav S, Jaspal D. Elimination of cationic azodye from aqueous media using doped polyaniline (PANI): adsorption optimization and modeling. CAN J CHEM 2020. [DOI: 10.1139/cjc-2020-0165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An adsorbent doped polyaniline (PANI) has been explored for the elimination of a cationic azodye, basic red 46 (BR-46), from textile effluent. Essential factors from batch mode have been studied to investigate their effect on the removal of BR-46. The investigated data have been applied to two prevalent adsorption isothermal models (i.e., Langmuir and Freundlich). In addition to the coefficients of determination, six different statistical error functions have been used to identify the most appropriate model for the existing process. The Langmuir model has been shown to be the best adsorption isotherm with minimum error values and a high coefficient of determination value (R2 > 0.999). The maximum monolayer adsorption capacity observed was 1.83 × 10−4 mol g−1 at 50 °C. Thermodynamic parameters of Gibb’s free energy, enthalpy, and entropy were found to be –30.06 KJ mol−1, 374 J mol−1, and 97.25 J mol−1 K−1, respectively. The positive values of enthalpy and entropy indicate the process to be endothermic. The amount of the dye adsorbed increased from 1.02 to 5.42 × 10−5 g in moving from 30 to 50 °C. The measured energy of activation was 17.467 kJ mol−1. The maximum percent removal of BR-46 from wastewater has been 93% at pH 8.
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Affiliation(s)
- Smita Jadhav
- Symbiosis Institute of Technology (SIT), Symbiosis International (Deemed University) (SIU), Gram: Lavale, Tal-Mulshi, Maharashtra, Pune 412115, India; Bharati Vidyapeeth’s College of Engineering for Women, Pune 411043, India
| | - Dipika Jaspal
- Symbiosis Institute of Technology (SIT), Symbiosis International (Deemed University) (SIU), Gram: Lavale, Tal-Mulshi, Maharashtra, Pune 412115, India
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Adsorption of Direct Red 23 dye from aqueous solution by means of modified montmorillonite nanoclay as a superadsorbent: Mechanism, kinetic and isotherm studies. KOREAN J CHEM ENG 2020. [DOI: 10.1007/s11814-020-0629-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Shi J, Xing C, Chen Y, Xu Z, Du Q, Cui Y. Pb 2+ adsorption on TiO 2 @HF-waste building bricks: Kinetics, thermodynamics, and mechanisms. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2019; 91:788-796. [PMID: 30929294 DOI: 10.1002/wer.1109] [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: 01/31/2019] [Revised: 03/26/2019] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Abstract
Pb2+ pollution poses severe threats to human health and ecosystem. In this study, based on the waste building bricks (WBB), the TiO2 @HF-WBB was prepared for Pb2+ adsorption removal from wastewater. The adsorption of Pb2+ on TiO2 @HF-WBB followed the pseudo-second-order kinetics and the Freundlich isotherm model. The thermodynamic parameters indicated that the adsorption process was endothermic, spontaneous, and irreversible, and also included physical adsorption and chemical adsorption simultaneously. Ca2+ and Mg2+ had little effect on Pb2+ adsorption. The effluent of fixed-bed was below 3 μg/L within 1,000 BV. The desorption rate could reach 90% by simple operation. The possible mechanisms included the electrostatic interaction and the complexation. PRACTITIONER POINTS: Waste building bricks were utilized for Pb2+ removal from wastewater. The effluent of fixed-bed was below 3 μg/L within 1,000 BV. TiO2 @HF-WBB has excellent adsorption property and desorption property. Possible mechanisms are electrostatic interaction and the complexation.
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Affiliation(s)
- Jing Shi
- School of Engineering, China Pharmaceutical University, Nanjing, China
| | - Chao Xing
- School of Engineering, China Pharmaceutical University, Nanjing, China
| | - Yating Chen
- School of Environmental Science & Engineering, Nanjing University of Information Science and Technology, Nanjing, China
| | - Zhengwen Xu
- School of Environmental Science & Engineering, Nanjing University of Information Science and Technology, Nanjing, China
| | - Qiong Du
- School of Engineering, China Pharmaceutical University, Nanjing, China
| | - Yixin Cui
- School of Engineering, China Pharmaceutical University, Nanjing, China
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