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Radwan EK, Omar RA, Moursy AS. Rapid adsorption of benzotriazole onto oxidized carbon cloth as an easily separable adsorbent. Sci Rep 2023; 13:17030. [PMID: 37813910 PMCID: PMC10562377 DOI: 10.1038/s41598-023-44067-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 10/03/2023] [Indexed: 10/11/2023] Open
Abstract
A commercial carbon cloth (CC) was oxidized by HNO3 acid and the features of the plain and oxidized CC were evaluated. The results of characterization illustrated that HNO3 oxidization duplicated the oxygen-containing functional groups and the surface area of the CC. The adsorption performance of the plain and oxidized CC (Oxi-CC) toward benzotriazole (BTR) was compared. The results disclosed that the uptake of BTR by oxidized CC was greater than the plain CC. Thence, the affinity of oxidized CC toward BTR was assessed at different conditions. It was found that the adsorption was quick, occurred at pH 9 and improved by adding NaCl or CaCl2 to the BTR solution. The kinetic and isotherm studies revealed that the surface of Oxi-CC is heterogeneous and the adsorption of BTR follows a physical process and forms multilayer over the Oxi-CC surface. The regenerability and reusability study illustrated that only deionized water can completely regenerate the Oxi-CC and that the Oxi-CC can be reused for five cycles without any loss of performance. The high maximum adsorption capacity of Dubinin-Radushkevich isotherm model (252 mg/g), ease of separation and regeneration, and maintaining the adsorption capacity for several cycles revealed the high efficiency and economical and environmental feasibility of Oxi-CC as an adsorbent for BTR.
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Affiliation(s)
- Emad K Radwan
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt.
| | - Rehab A Omar
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt
| | - Ahmed S Moursy
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt
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Mansor ES, El Shall FN, Radwan EK. Simultaneous decolorization of anionic and cationic dyes by 3D metal-free easily separable visible light active photocatalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:10775-10788. [PMID: 36083362 PMCID: PMC9898404 DOI: 10.1007/s11356-022-22838-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
To overcome the hard and costly post-treatment separation of ultrathin graphitic carbon nitride nanosheets (UGCN), it was supported on polyurethane foam (PUF). The ratio of PUF/UGCN was optimized for the removal of a mixture of methylene blue (MB) and methyl orange (MO) dyes. The characteristics of the composite photocatalyst and its photocatalytic performance were detailly studied. The X-ray diffraction and Fourier transform infrared results proved the successful preparation of UGCN and PUF and that the PUF/UGCN composite combines the features of both pure materials. The transmission electron microscopy illustrated the ultrathin nanosheet shape of the UGCN, while the scanning electron microscope showed the highly porous 3D-hierarchical structure of PUF. Compared to the pure components, the composite photocatalyst with PUF/UGCN mass ratio of 4 achieved better decolorization of MO and almost same decolorization of MB as UGCN. Neutral pH and 1 g/L of the composite photocatalyst were the optimum conditions for MB/MO mixture decolorization. The composite photocatalyst kept its efficiency for five successive cycles. Hydroxyl radicals were the dominant in the degradation of MB, while superoxide radicals were the most influencer in MO degradation. Conclusively, supporting UGCN onto PUF kept the photocatalytic efficiency of UGCN toward MB decolorization and improved its efficiency toward MO. Moreover, it enabled the reuse of the composite photocatalyst and facilitated the post-treatment separation process.
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Affiliation(s)
- Eman S Mansor
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt
| | - Fatma N El Shall
- Dyeing, Printing and Textile Auxiliary Department, Textile Research and Technology Institute, National Research Centre, El-Buhouth St. 33, Dokki, Cairo, 12622, Egypt
| | - Emad K Radwan
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt.
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Isik B, Avci S, Cakar F, Cankurtaran O. Adsorptive removal of hazardous dye (crystal violet) using bay leaves (Laurus nobilis L.): surface characterization, batch adsorption studies, and statistical analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:1333-1356. [PMID: 35915311 DOI: 10.1007/s11356-022-22278-4] [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: 03/21/2022] [Accepted: 07/24/2022] [Indexed: 06/15/2023]
Abstract
In this study, the surface properties of Laurus nobilis L. were determined by inverse gas chromatography. From this, the surface of Laurus nobilis L. was found to be an acidic ([Formula: see text]). Then, the adsorption of hazardous crystal violet dye on Laurus nobilis L. was examined. For the adsorption process, the optimum conditions were determined as contact time (60 min), adsorbent dosage (1.0 g/L), agitation rate (200 rpm), and initial pH (≅ 7). The efficiencies of initial concentration, contact time, temperature, and their binary combinations on the improvement of adsorption percentage were statistically investigated via three different two-way ANOVA analyses. Adsorption data were applied to different isotherms, and it was determined that the Langmuir isotherm (r2 = 0.9998) was the most suitable isotherm for the adsorption process. The [Formula: see text] value was calculated as 400.0 mg/g at 25 °C from the Langmuir isotherm. According to kinetic models, it was observed that the adsorption occurred in three steps. According to enthalpy (+ 7.52 kJ/mol), activation energy (+ 8.91 kJ/mol), and Gibbs free energy (- 30.0 kJ/mol) values, it was determined that the adsorption occurred endothermically and spontaneously. As a result of reusability studies, it was determined that the adsorbent could be used repeatedly.
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Affiliation(s)
- Birol Isik
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Esenler, Istanbul, 34220, Turkey
| | - Selen Avci
- Department of Industrial Engineering, Kocaeli University, Izmit, 41380, Turkey
| | - Fatih Cakar
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Esenler, Istanbul, 34220, Turkey
| | - Ozlem Cankurtaran
- Department of Chemistry, Faculty of Arts & Sciences, Yildiz Technical University, Esenler, Istanbul, 34220, Turkey.
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Isotherm, Thermodynamics, and Kinetics of Methyl Orange Adsorption onto Magnetic Resin of Chitosan Microspheres. Int J Mol Sci 2022; 23:ijms232213839. [PMID: 36430316 PMCID: PMC9692306 DOI: 10.3390/ijms232213839] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022] Open
Abstract
Severe environmental pollution problems arising from toxic dyestuffs (e.g., methyl orange) are receiving increasing attention. Therefore, dyes' safe removal has become a research hotspot. Among the many physical-chemical removal techniques, adsorption using renewable biological resources has proved to be more advantageous over others due to its effectiveness and economy. Chitosan is a natural, renewable biopolymer obtained by deactivated chitin. Thus, the magnetic resin of chitosan microspheres (MRCM), prepared by reversed-phase suspension cross-linking polymerization, was used to remove methyl orange from a solution in a batch adsorption system. The main results are as follows: (1) The results of physical and swelling properties of MRCM indicated that MRCM was a type of black spherical, porous, water-absorbing, and weak alkali exchange resin, and it had the ability to adsorb methyl orange when it was applied in solutions above pH 2.0. (2) In batch adsorption studies, the maximum adsorption capacity was obtained at pH 5; the adsorption equilibrium time was 140 min; and the maximum adsorption was reached at 450 mg/L initial concentration. (3) Among the three isotherm adsorption models, Langmuir achieved the best fit for the adsorption of methyl orange onto MRCM. (4) The adsorption thermodynamics indicated that the adsorption was spontaneous, with increasing enthalpy, and was driven by the entropy. (5) The pseudo-second-order kinetics equation was most suitable to describe the adsorption kinetics, and the adsorption kinetics was also controlled by the liquid-film diffusion dynamics. Consequently, MRCM with relatively higher methyl orange adsorption exhibited the great efficiency for methyl orange removal as an environment-friendly sorbent. Thus, the findings are useful for methyl orange pollution control in real-life wastewater treatment applications.
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Radwan EK, Rashdan HRM, Hemdan BA, Koryam AA, El-Naggar ME. A dual-functional sulfone biscompound containing 1,2,3-triazole moiety for decolorization and disinfection of contaminated water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:77238-77252. [PMID: 35676578 PMCID: PMC9581830 DOI: 10.1007/s11356-022-20932-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 05/13/2022] [Indexed: 05/28/2023]
Abstract
Water decontamination from toxic dyes and pathogenic microorganisms is critical for life on Earth. Herein, we report the synthesis of sulfone biscompound containing 1,2,3-triazole moiety and evaluation of its dye decolorization and biocidal and disinfection efficiencies. The decolorization efficiency was tested under different experimental conditions, while the biocidal action was examined against various types of waterborne pathogens, and the disinfection of some pathogenic microbes was executed in artificially contaminated water. The findindgs illustrated that the solution initial pH (pHi) affected the decolorization efficiency significantly. About complete removal of 10 mg/L malachite green (MG) dye was achieved after 10 min using 3 g/L of the sulfone biscompound at pHi 6. The pseudo-second-order equation suited the adsorption kinetics accurately, while the equilibrium data was suited by Langmuir isotherm model. Electrostatic, n-π, and π-π interactions brought about the adsorption of MG onto the sulfone biscompound. The biocidal results indicated that the sulfone biscompound had a powerful antibacterial potential against the tested bacterial species. Likewise, the distinction trail revealed that after 70-90 min of direct contact with an effective dose, the tested pathogens could be completely eliminated (6-log reduction). Overall, the newly synthesized sulfone biscompound can efficiently remove cationic dyes and disinfect contaminated water.
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Affiliation(s)
- Emad K Radwan
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt.
| | - Huda R M Rashdan
- Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt
| | - Bahaa A Hemdan
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt
| | - Asmaa A Koryam
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt
| | - Mehrez E El-Naggar
- Institute of Textile Research and Technology, National Research Centre, 33 El Bohouth St, Dokki, Giza, 12622, Egypt.
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Koryam A, El-Wakeel ST, Radwan EK, Darwish ES, Abdel Fattah AM. One-Step Room-Temperature Synthesis of Bimetallic Nanoscale Zero-Valent FeCo by Hydrazine Reduction: Effect of Metal Salts and Application in Contaminated Water Treatment. ACS OMEGA 2022; 7:34810-34823. [PMID: 36211085 PMCID: PMC9535644 DOI: 10.1021/acsomega.2c03128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 09/09/2022] [Indexed: 05/25/2023]
Abstract
The effect of initial salt composition on the formation of zero-valent bimetallic FeCo was investigated in this work. Pure crystalline zero-valent FeCo nanoparticles (NPs) were obtained using either chloride or nitrate salts of both metals. Smaller NPs can be obtained using nitrate salts. Comparing the features of the FeCo prepared at room temperature and the solvothermal method revealed that both materials are almost identical. However, the room-temperature method is simpler, quicker, and saves energy. Energy-dispersive X-ray (EDX) analysis of the FeCo NPs prepared using nitrate salts at room temperature demonstrated the absence of oxygen and the presence and uniform distribution of Fe and Co within the structure with the atomic ratio very close to the initially planned one. The particles were sphere-like with a mean particle size of 7 nm, saturation magnetization of 173.32 emu/g, and surface area of 30 m2/g. The removal of Cu2+ and reactive blue 5 (RB5) by FeCo in a single-component system was conformed to the pseudo-first-order and pseudo-second-order models, respectively. The isotherm study confirmed the ability of FeCo for the simultaneous removal of Cu2+ and RB5 with more selectivity toward Cu2+. The RB5 has a synergistic effect on Cu2+ removal, while Cu2+ has an antagonistic effect on RB5 removal.
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Affiliation(s)
- Asmaa
A. Koryam
- Water
Pollution Research Department, National
Research Centre, 33 El Buhouth St, Dokki, 12622 Giza, Egypt
| | - Shaimaa T. El-Wakeel
- Water
Pollution Research Department, National
Research Centre, 33 El Buhouth St, Dokki, 12622 Giza, Egypt
| | - Emad K. Radwan
- Water
Pollution Research Department, National
Research Centre, 33 El Buhouth St, Dokki, 12622 Giza, Egypt
| | - Elham S. Darwish
- Department
of Chemistry, Faculty of Science, University
of Cairo, 12613 Giza, Egypt
| | - Azza M. Abdel Fattah
- Department
of Chemistry, Faculty of Science, University
of Cairo, 12613 Giza, Egypt
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El-Naggar ME, Radwan EK, Rashdan HRM, El-Wakeel ST, Koryam AA, Sabt A. Simultaneous removal of Pb 2+ and direct red 31 dye from contaminated water using N-(2-hydroxyethyl)-2-oxo-2 H-chromene-3-carboxamide loaded chitosan nanoparticles. RSC Adv 2022; 12:18923-18935. [PMID: 35873340 PMCID: PMC9241362 DOI: 10.1039/d2ra02526d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 06/24/2022] [Indexed: 11/21/2022] Open
Abstract
This study reports the preparation of a new material that can remove synthetic dyes and trace metals simultaneously. A new coumarin derivative was synthesized and its chemical structure was inferred from spectral data (FT-IR, 1H-NMR, 13C-NMR). Meanwhile, chitosan nanoparticles (CsNPs) were prepared then used as a carrier for two different concentrations of the coumarin derivative (C1@CsNPs and C2@CsNPs). The TEM, SEM and DLS findings illustrated that the prepared nanocomposites exhibited spherical shape and small size (less than 200 nm). The performance of the prepared material for the removal of an anionic dye (direct red 31, DR31) and cationic trace metal (Pb2+) was evaluated in unary and binary systems. The results revealed that complete removal of 10 mg L−1 of DR31 and Pb2+ in unary system was achieved at pHo 3.0 and 5.5 using 0.5 and 2.0 g L−1, respectively, of C2@CsNPs. The adsorption of DR31 and Pb2+ followed different mechanisms as deduced from the effect of pHo, kinetic, isotherm and binary adsorption studies. The adsorption of DR31 followed the Langmuir isotherm model and the pseudo-first-order kinetic model. While, the adsorption of Pb2+ followed Freundlich isotherm model and Elovich kinetic model. In the binary system, the co-presence of DR31 and Pb2+ did not affect the adsorption of each other's. Overall, the prepared material showed promising results for the removal of anionic dyes and cations trace metals from contaminated water. This study reports the preparation of a new material that can remove synthetic dyes and trace metals simultaneously.![]()
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Affiliation(s)
- Mehrez E El-Naggar
- Institute of Textile Research and Technology, National Research Centre 33 El Buhouth St, Dokki Giza 12622 Egypt
| | - Emad K Radwan
- Water Pollution Research Department, National Research Centre 33 El Buhouth St, Dokki 12622 Giza Egypt
| | - Huda R M Rashdan
- Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre 33 El Buhouth St Dokki 12622 Egypt
| | - Shaimaa T El-Wakeel
- Water Pollution Research Department, National Research Centre 33 El Buhouth St, Dokki 12622 Giza Egypt
| | - Asmaa A Koryam
- Water Pollution Research Department, National Research Centre 33 El Buhouth St, Dokki 12622 Giza Egypt
| | - Ahmed Sabt
- Department of Natural Compounds Chemistry, Pharmaceutical and Drug Industries Research Institute, National Research Centre 33 El Buhouth St, Dokki 12622 Giza Egypt
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