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Moslehi MH, Eslami M, Ghadirian M, Nateq K, Ramavandi B, Nasseh N. Photocatalytic decomposition of metronidazole by zinc hexaferrite coated with bismuth oxyiodide magnetic nanocomposite: Advanced modelling and optimization with artificial neural network. CHEMOSPHERE 2024; 356:141770. [PMID: 38554866 DOI: 10.1016/j.chemosphere.2024.141770] [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: 10/18/2023] [Revised: 02/10/2024] [Accepted: 03/20/2024] [Indexed: 04/02/2024]
Abstract
The objective of the present study was to employ a green synthesis method to produce a sustainable ZnFe12O19/BiOI nanocomposite and evaluate its efficacy in the photocatalytic degradation of metronidazole (MNZ) from aqueous media. An artificial neural network (ANN) model was developed to predict the performance of the photocatalytic degradation process using experimental data. More importantly, sensitivity analysis was conducted to explore the relationship between MNZ degradation and various experimental parameters. The elimination of MNZ was assessed under different operational parameters, including pH, contaminant concentration, nanocomposite dosage, and retention time. The outcomes exhibited high a desirability performance of the ANN model with a coefficient correlation (R2) of 0.99. Under optimized circumstances, the MNZ elimination efficiency, as well as the reduction in chemical oxygen demand (COD) and total organic carbon (TOC), reached 92.71%, 70.23%, and 55.08%, respectively. The catalyst showed the ability to be regenerated 8 times with only a slight decrease in its photocatalytic activity. Furthermore, the experimental data obtained demonstrated a good agreement with the predictions of the ANN model. As a result, this study fabricated the ZnFe12O19/BiOI nanocomposite, which gave potential implication value in the effective decontamination of pharmaceutical compounds.
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Affiliation(s)
| | - Mostafa Eslami
- Mechanical Engineering Department, University of Tehran, Iran
| | | | - Kasra Nateq
- Department of Chemical Engineering, Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran
| | - Bahman Ramavandi
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Negin Nasseh
- Department of Health Education and Promotion, School of Health, Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran.
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2
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Heidarinejad F, Kamani H, Khtibi A. Magnetic Fe-doped TiO 2@Fe 3O 4 for metronidazole degradation in aqueous solutions: Characteristics and efficacy assessment. Heliyon 2023; 9:e21414. [PMID: 38027846 PMCID: PMC10643255 DOI: 10.1016/j.heliyon.2023.e21414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/10/2023] [Accepted: 10/20/2023] [Indexed: 12/01/2023] Open
Abstract
Antibiotics present in aquatic environments can contribute to the emergence of antibiotic-resistant bacterial strains, posing potential threats to public health. Therefore, efficient strategies to remove these compounds from water systems are essential to reduce both ecological and human health risks. This research aimed to assess the photocatalytic removal efficiency of metronidazole (MET) from an aqueous solution using a 15-W bare UVC lamp and magnetic nanocatalysts (Fe-doped TiO2@Fe3O4), which were synthesized using the sol-gel technique. Furthermore, scanning electron microscopy with integrated energy dispersive X-ray analysis (SEM/EDX), X-ray diffractometry (XRD), Differential reflectance spectroscopy (DRS), vibrating sample magnetometer (VSM), and Fourier transform infrared spectroscopy (FTIR) analysis were carried out to characterize the synthesized nanocatalysts. The influence of several factors, such as pH, initial MET, and nanocatalysts concentrations during reaction times of 15-120 min, was studied. The characterization results confirmed that Fe and Ti were successfully integrated into the Fe- doped TiO2@Fe3O4 nanocomposite. Highest MET degradation efficiency (99.37 %) was observed at a pH of 3, with an initial MET concentration of 60 mg/L, nanoparticle dosage of 800 mg/L, and a reaction time of 90 min. The stability of the nanocatalyst was acceptable. The results suggest that OH ions may play a crucial role in the degradation of MET demonstrating photocatalytic degradation can be an effective way to remove MET from water resources. This research sets a precedent for future endeavors aimed at harnessing photocatalysis for environmental remediation of pharmaceutical pollutants.
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Affiliation(s)
- Farnaz Heidarinejad
- Infectious Diseases and Tropical Medicine Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Zahedan,Iran
| | - Hossein Kamani
- Infectious Diseases and Tropical Medicine Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Zahedan,Iran
| | - Aramdokht Khtibi
- Infectious Diseases and Tropical Medicine Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Zahedan,Iran
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3
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Annam Renita A, Sathish S, Kumar PS, Prabu D, Manikandan N, Mohamed Iqbal A, Rajesh G, Rangasamy G. Emerging aspects of metal ions-doped zinc oxide photocatalysts in degradation of organic dyes and pharmaceutical pollutants - A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118614. [PMID: 37454449 DOI: 10.1016/j.jenvman.2023.118614] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
In recent periods, a broad assortment of continual organic contaminants has been released into our natural water resources. Indeed, it is exceedingly poisonous and perilous to living things; thus, the elimination of these organic pollutants before release into the water bodies is vital. A variety of techniques have been utilized to remove these organic pollutants with advanced oxidation photocatalytic methods with zinc oxide (ZnO) nanoparticles being commonly used as a capable catalyst for contaminated water treatment. Nevertheless, its broad energy gap, which can be only stimulated under an ultraviolet (UV) light source, and high recombination pairs of electrons and holes limit their photocatalytic behaviors. However, numerous methods have been suggested to decrease its energy gap for visible regions. Including, the doping ZnO with metal ions (dopant) can be considered as an effectual route not only the reason for a movement of the absorption edges toward the higher (visible light) region but also to lower the electron-hole pair (e--h+) recombination. This review concentrated on the impact of dissimilar types of metal ions (dopants) on the advancement in the degradation performance of ZnO. So, this work demonstrates a vital review of contemporary attainments in the alteration of ZnO nanoparticles for organic pollutants eliminations. Besides, the effect of doping ions including transition metals, rare earth metals, and metal ions (substitutional and interstitial) concerning numerous types of altered ZnO are summarized. The photodegradation mechanisms for pristine and metal-modified ZnO nanoparticles are also conferred.
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Affiliation(s)
- A Annam Renita
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - S Sathish
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603 110, Tamil Nadu, India; Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali 140413, India.
| | - D Prabu
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - N Manikandan
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - A Mohamed Iqbal
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - G Rajesh
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603 110, Tamil Nadu, India
| | - Gayathri Rangasamy
- School of Engineering, Lebanese American University, Byblos, Lebanon; Department of Sustainable Engineering, Institute of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
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4
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Kawabata K, Miyoshi A, Nishi H. Cocrystallization with nicotinamide promotes naproxen photodegradation in the solid-state. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2023. [DOI: 10.1016/j.jpap.2023.100172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
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5
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Qin Y, Yuan J, Hu H, Shen Q, Hu S, Liu J, Luo X, Xu D. Construction of PANI‐ZnFe
2
O
4
/FAC materials with fly ash cenospheres beads as a carrier to enhance the degradation of Methylene Blue. ChemistrySelect 2023. [DOI: 10.1002/slct.202204488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Yu Qin
- School of Chemistry and Chemical Engineering Chongqing University of Science and Technology Chongqing No. 20 East University Town Road, Shapingba District Chongqing 401331 P.R. China
| | - Jinhai Yuan
- School of Chemistry and Chemical Engineering Chongqing University of Science and Technology Chongqing No. 20 East University Town Road, Shapingba District Chongqing 401331 P.R. China
| | - Haikun Hu
- School of Chemistry and Chemical Engineering Chongqing University of Science and Technology Chongqing No. 20 East University Town Road, Shapingba District Chongqing 401331 P.R. China
| | - Qiqi Shen
- School of Chemistry and Chemical Engineering Chongqing University of Science and Technology Chongqing No. 20 East University Town Road, Shapingba District Chongqing 401331 P.R. China
| | - Shiyue Hu
- School of Chemistry and Chemical Engineering Chongqing University of Science and Technology Chongqing No. 20 East University Town Road, Shapingba District Chongqing 401331 P.R. China
| | - Junhong Liu
- School of Chemistry and Chemical Engineering Chongqing University of Science and Technology Chongqing No. 20 East University Town Road, Shapingba District Chongqing 401331 P.R. China
| | - Xuanlan Luo
- School of Chemistry and Chemical Engineering Chongqing University of Science and Technology Chongqing No. 20 East University Town Road, Shapingba District Chongqing 401331 P.R. China
| | - Di Xu
- School of Chemistry and Chemical Engineering Chongqing University of Science and Technology Chongqing No. 20 East University Town Road, Shapingba District Chongqing 401331 P.R. China
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6
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Yeganeh M, Sobhi HR, Esrafili A. Efficient photocatalytic degradation of metronidazole from aqueous solutions using Co/g-C 3N 4/Fe 3O 4 nanocomposite under visible light irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:25486-25495. [PMID: 34843049 DOI: 10.1007/s11356-021-17077-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/12/2021] [Indexed: 06/13/2023]
Abstract
Herein, the efficient degradation of a highly consumed antibiotic known as metronidazole (MNZ) in aqueous solutions using Co/g-C3N4/Fe3O4 nanocomposite under visible light irradiation was accomplished. Initially, the photocatalyst (Co/g-C3N4/Fe3O4) was synthesized by a simple hydrothermal method and then characterized by several analytical techniques, namely EDS, SEM, XRD, UV-vis DRS, and FTIR. The efficiency of the synthesized photocatalyst with regard to the degradation of the studied antibiotic (MNZ) under visible light irradiation was fully evaluated. The influential operational parameters affecting the efficiency of the degradation process such as pH (2-10), nanocomposite dosage (0.2-1 g/L), MNZ concentration (5-20 mg/L), and irradiation time (0-80 min) were optimized. The results revealed that the maximum degradation efficiency for MNZ was obtained under the following conditions: irradiation time of 60 min, pH = 8, MNZ concentration of 5 mg/L, and photocatalyst dosage of 0.7 g/L. In addition, the degradation of MNZ followed the pseudo-first-order kinetic model. The best rate constant (k) value was determined to be 0.0102 min-1 with the correlation coefficient (R2) of 0.992. According to the results of the quenching tests, it was found out that hydroxyl radicals (OH°) were the main species responsible for the MNZ degradation. Furthermore, the applied photocatalyst (Co/g-C3N4/Fe3O4) exhibited a high level of recovery and stability after five cycles of reuse. Co/g-C3N4/Fe3O4/Vis system exhibited an excellent performance in the treatment of wastewater and real water samples. Finally, it was concluded that the synthesized nanocomposite could be potentially used as a promising and suitable photocatalyst in the degradation of other antibiotics.
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Affiliation(s)
- Mojtaba Yeganeh
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
| | | | - Ali Esrafili
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran.
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7
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Rajan MS, John A, Thomas J. Nanophotocatalysis for the Removal of Pharmaceutical Residues from
Water Bodies: State of Art and Recent Trends. CURR ANAL CHEM 2022. [DOI: 10.2174/1573411017666210412095354] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
Background:
The occurrence of pharmaceuticals in surface and drinking water is ubiquitous
and is a major concern of researchers. These compounds cause a destructive impact on
aquatic and terrestrial life forms, and the removal of these compounds from the environment is a
challenging issue. Existent conventional wastewater treatment processes are generally inefficacious
because of their low degradation efficiency and inadequate techniques associated with the disposal
of adsorbed pollutants during comparatively effective methods like the adsorption process.
Remediation Method:
Semiconductor-mediated photocatalysis is an attractive technology for the
efficient removal of pharmaceutical compounds. Among various semiconductors, TiO2 and ZnObased
photocatalysts gained much interest during the last years because of their efficiency in decomposing
and mineralizing the lethal organic pollutants with the utilization of UV-visible light.
Incessant efforts are being undertaken for tuning the physicochemical, optical, and electronic properties
of these photocatalysts to strengthen their overall photocatalytic performance with good recycling
efficiency.
Results:
This review attempts to showcase the recent progress in the rational design and fabrication
of nanosized TiO2 and ZnO photocatalysts for the removal of pollutants derived from the pharmaceutical
industry and hospital wastes.
Conclusion:
Photocatalysis involving TiO2 and ZnO provides a positive impact on pollution management
and could be successfully applied to remove pharmaceuticals from wastewater streams.
Structure modifications, the introduction of heteroatoms, and the integration of polymers with
these nano photocatalysts offer leapfrogging opportunities for broader applications in the field of
photocatalysis.
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Affiliation(s)
- Mekha Susan Rajan
- Research Department of Chemistry, Kuriakose Elias College, Mannanam, Kottayam, Kerala 686561,India
| | - Anju John
- Research Department of Chemistry, Kuriakose Elias College, Mannanam, Kottayam, Kerala 686561,India
| | - Jesty Thomas
- Research Department of Chemistry, Kuriakose Elias College, Mannanam, Kottayam, Kerala 686561,India
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8
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Hosseinzadeh G, Ghasemian N, Zinatloo-Ajabshir S. TiO2/graphene nanocomposite supported on clinoptilolite nanoplate and its enhanced visible light photocatalytic activity. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2021.109144] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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9
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Niaki ZM, Ghorbani M, Ghoreishi SA. Synthesis of ZnFe 2O 4@Uio-66 nanocomposite for the photocatalytic degradation of metronidazole antibiotic under visible light irradiation. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2021; 19:1583-1596. [PMID: 34900290 PMCID: PMC8617125 DOI: 10.1007/s40201-021-00713-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 07/12/2021] [Indexed: 06/14/2023]
Abstract
UNLABELLED In this study, the application of ZnFe2O4, Uio-66 nanoparticles and ZnFe2O4@Uio-66 photocatalytic nanocomposites, with different ratios of each component was synthesized and applied for the photocatalytic degradation of metronidazole (MNZ) antibiotic. The samples were characterized with (FTIR), (XRD), (SEM), (DLS), (VSM), and UV-Vis spectroscopy. The photocatalytic process was performed under visible light in an aqueous solution. The optical studies revealed that the addition of ZnFe2O4 nanoparticles could stimulate the activation wavelength of the nanocomposite, effectively shifting it to the visible light region, and correspondingly reduce the bandgap. To evaluate the ability of ZnFe2O4@Uio-66 magnetic nanocatalyst to degrade metronidazole, effective parameters such as the initial concentration of MNZ in aqueous solution(10-90 mg/L), pH(2-10), the illumination and darkness time and photocatalyst dosage(0.01-0.05 g) were investigated and optimized. It was observed that when ZnFe2O4 concentration was twice that of Uio-66, the degradation efficiency increased. The optimum degradation conditions, at which 93.7% degradation efficiency was achieved, were determined at 120 min brightness, 40 min darkness, pH = 8, initial concentration of 10 ppm, and photocatalyst content of 0.03 g. Based on the results of photocatalytic degradation kinetics, all the samples followed the Langmuir-Hinshelwood pseudo-first-order kinetics model. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s40201-021-00713-x.
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Affiliation(s)
- Zahra Mohammadi Niaki
- Faculty of Chemical Engineering, BabolNoshirvani University of Technology, Shariati Ave, Babol, 47148-71167 Iran
| | - Mohsen Ghorbani
- Faculty of Chemical Engineering, BabolNoshirvani University of Technology, Shariati Ave, Babol, 47148-71167 Iran
| | - Seyyed Aliasghar Ghoreishi
- Faculty of Chemical Engineering, BabolNoshirvani University of Technology, Shariati Ave, Babol, 47148-71167 Iran
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10
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Tahir D, Ilyas S, Rahmat R, Heryanto H, Fahri AN, Rahmi MH, Abdullah B, Hong CC, Kang HJ. Enhanced Visible-Light Absorption of Fe 2O 3 Covered by Activated Carbon for Multifunctional Purposes: Tuning the Structural, Electronic, Optical, and Magnetic Properties. ACS OMEGA 2021; 6:28334-28346. [PMID: 34723030 PMCID: PMC8552456 DOI: 10.1021/acsomega.1c04526] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 10/04/2021] [Indexed: 06/06/2023]
Abstract
Visible-light absorption is a critical factor for photocatalyst activity and absorption of electromagnetic (EM) interference application. The band gap of Fe2O3 is 2 eV, which can be increased by doping with a high-band-gap material such as carbon from activated carbon (AC) with a band gap of 4.5 eV for increased visible-light absorption. The porosity decreases from 88 to 81.6%, and the band gap increases from 2.14 to 2.64 eV by increasing the AC from 10 to 25%, respectively. The photocatalytic activity takes 120 min to produce a harmless product for 10-20% AC, but 25% AC shows 89.5% degradation in only 90 min and the potential to attenuate the EM wave up to 99% due to the RL being below -20 dB. The second- and third-cycle degradation achieved by the composite Fe2O3-AC having 25% AC is 88.2 and 86.5% in 90 min, respectively. The pore of the surface state of AC contains a trapped charge, and interaction occurs between the charge (electron/hole) and O2 or H2O to produce OH and superoxide (O2 -) radicals. These radicals move inside the molecule of the pollutant (methylene blue (MB)) to break up the bond, with the final products being H2O and CO2. The X-ray photoelectron (XPS) spectra show that oxygen plays a key role in the interatomic bonding with Fe, C, and MB atoms. The best absorption of EM interference is -21.43 dB, with degradation reaching 89.51% in only 90 min for 25% AC due to its higher band gap and anisotropy constant. Fe2O3-carbon is a multifunctional material for the green environment because of its electromagnetic interference absorption and photodegradation of wastewater.
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Affiliation(s)
- Dahlang Tahir
- Department
of Physics, Hasanuddin University, Makassar 90245 Indonesia
| | - Sultan Ilyas
- Department
of Physics, Hasanuddin University, Makassar 90245 Indonesia
| | - Roni Rahmat
- Department
of Physics, Hasanuddin University, Makassar 90245 Indonesia
| | - Heryanto Heryanto
- Department
of Physics, Hasanuddin University, Makassar 90245 Indonesia
| | - Ahmad Nurul Fahri
- Department
of Physics, Hasanuddin University, Makassar 90245 Indonesia
| | - Mufti Hatur Rahmi
- Department
of Fisheries, Hasanuddin University, Makassar 90245 Indonesia
| | - Bualkar Abdullah
- Department
of Physics, Hasanuddin University, Makassar 90245 Indonesia
| | - Chol Chae Hong
- Center
for Research Instruments and Experimental Facilities, Chungbuk National University, Cheongju 28644, Korea
| | - Hee Jae Kang
- Department
of Physics, Chungbuk National University, Cheongju 28644 Korea
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11
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Parmar N, Srivastava JK. Degradation of pharmaceutical antibiotic (ciprofloxacin) by photocatalysis process using sol-gel based titanium dioxide nanoparticles. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2021. [DOI: 10.1515/ijcre-2021-0076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
This study is an attempt to the removal of Ciprofloxacin (CIP) antibiotic from simulated wastewater using a photocatalytic process. The photocatalytic process was carried out in a photocatalytic reactor in the presence of TiO2 nanoparticles. TiO2 nanoparticles were successfully prepared in a laboratory scale using sol-gel method with titanium-isopropoxide (TTIP) as titanium precursor. Prepared material was found very effective to the removal of CIP antibiotic. The maximum removal efficiency of 87.95% of ciprofloxacin from aqueous solution was achieved at the pH 5, catalyst doze of 40 mg L−1 with initial concentration of ciprofloxacin 5 mg L−1, and the reaction time of 100 min additionally; material characterization of TiO2 was presented in detail in terms of XRD, SEM, UV, and FTIR. It has been found that at the optimum condition the total operating cost indicated for the removal of ciprofloxacin from aqueous solution is 786.56 (INR/kg of CIP removal). This technique demonstrated that photocatalytic reaction in presence of TiO2 nanoparticles is well applicable to treat pharmaceutical wastewater.
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Affiliation(s)
- Nitesh Parmar
- Department of Chemical Engineering , Ujjain Engineering College , Ujjain , Madhya Pradesh , India
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12
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Dual-stimuli-responsive CuS-based micromotors for efficient photo-Fenton degradation of antibiotics. J Colloid Interface Sci 2021; 603:685-694. [PMID: 34225072 DOI: 10.1016/j.jcis.2021.06.142] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/17/2021] [Accepted: 06/24/2021] [Indexed: 01/28/2023]
Abstract
Antibiotics as emerging pollutants in water pose great risks to human health. Due to their persistence in the environment, advanced oxidation processes (AOPs) have been proposed for the degradation of antibiotics. Therefore, developing efficient catalysts for AOPs becomes critical for the removal of antibiotics. Herein, we develop self-propelled CuS-based micromotors (CuS@Fe3O4/Pt) as active heterogenous catalysts for efficient photo-Fenton degradation of antibiotics. Combining the merits of conventional heterogenous and homogenous catalysts, the prepared micromotors are easy to recycle and free of secondary pollution risks, while demonstrating high degradation efficiency due to self-induced intensification of mass transfer via autonomous motion and microbubble generation. The H2O2 in the Fenton reagents can serve as the fuel for the micromotors to drive their self-propulsion by bubbles generated from catalytic decomposition of H2O2 by the platinum layer. The dual-stimuli-responsiveness of the micromotors to magnetic field and light irradiation allows multi-modes of propulsion and guidance in different systems. The efficient photothermal effect of CuS enables the micromotors to achieve collective phototactic motion toward light, whereas magnetic responsiveness facilitates the recovery and collection of the micromotors. The synergistic effect of CuS and Fe3O4 NPs in H2O2 under visible light irradiation generates a large amount of OH· and ·O2- to effectively degrade tetracycline within several minutes. With these advantages, the dual-stimuli-responsive CuS-based micromotors provide a new strategy for enhanced degradation of antibiotics in water purification applications.
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13
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Investigation of copper plates as anode and TiO2/glycine/ZnFe2O4 stabilized on graphite as cathode for textile dyes degradation from aqueous solution under visible light. J APPL ELECTROCHEM 2021. [DOI: 10.1007/s10800-021-01580-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Azalok KA, Oladipo AA, Gazi M. Hybrid MnFe-LDO-biochar nanopowders for degradation of metronidazole via UV-light-driven photocatalysis: Characterization and mechanism studies. CHEMOSPHERE 2021; 268:128844. [PMID: 33187651 DOI: 10.1016/j.chemosphere.2020.128844] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/25/2020] [Accepted: 10/29/2020] [Indexed: 05/27/2023]
Abstract
A cost-competitive MnFe-LDO-biochar hybrid catalyst was successfully synthesized via a simple yet efficient technique for the decomposition of metronidazole (MZ). MnFe-LDO-biochar was characterized by various techniques and the results revealed that it has a bandgap of 2.85 eV, high photocurrent response of 3.8 μA cm-2 and can be separated rapidly from the bulk solution by an external magnet due to its saturation magnetization of 28.5 emu g-1. Initially, in the dark condition, 20% of MZ was removed after 30 min when 20 mg L-1 MZ solution was treated with 50 mg MnFe-LDO-biochar in the presence of 6 mM H2O2. The MZ degradation increased remarkably to ∼98% upon exposure to a UV light for 60 min. Under various processes, UV/MnFe-LDO-biochar/H2O2 presented high degradation rate constant of 0.226 min-1 and lowest energy consumption cost of 0.38$ at 7.56 kWh m-3 which is ∼13 times lower than the degradation of MZ by the photolytic process under similar conditions. The MZ photocatalytic decomposition trend revealed a multiprocess mechanism influenced majorly by •OH and partly by h+ and •O2-. Note that in MnFe-LDO-biochar/UV system; 5% of MZ degradation was observed after 120 min and reached 13% after 300 min. MnFe-LDO-biochar maintained ∼88% reuse efficiency after three consecutive recycling tests.
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Affiliation(s)
- Khawla Abdulmutalib Azalok
- Polymeric Materials Research Laboratory, Department of Chemistry, Faculty of Arts and Sciences, Eastern Mediterranean University, Famagusta TR North Cyprus, Via Mersin 10, Turkey
| | - Akeem Adeyemi Oladipo
- Polymeric Materials Research Laboratory, Department of Chemistry, Faculty of Arts and Sciences, Eastern Mediterranean University, Famagusta TR North Cyprus, Via Mersin 10, Turkey.
| | - Mustafa Gazi
- Polymeric Materials Research Laboratory, Department of Chemistry, Faculty of Arts and Sciences, Eastern Mediterranean University, Famagusta TR North Cyprus, Via Mersin 10, Turkey.
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15
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Abukhadra MR, Basyouny MG, El-Sherbeeny AM, El-Meligy MA, Luqman M. Insights into the green doping of clinoptilolite with Na + ions (Na +/Clino) as a nanocatalyst in the conversion of palm oil into biodiesel; optimization and mechanism. NANOTECHNOLOGY 2021; 32:155702. [PMID: 33511967 DOI: 10.1088/1361-6528/abd7b0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The critical demand for eco-friendly, renewable, and safe energy resources is an essential issue encountered in the contemporary world. The catalytic transesterification of plant oils into biodiesel was assessed as promising a technique for providing new forms of clean and safe fuel. Natural clinoptilolite was doped with Na+ ions by green chemical reactions between sodium nitrite and green tea extract, producing a novel modified structure (Na+/Clino). The Na+/Clino product had an enhanced total basicity (6.41 mmol OH/g), ion exchange capacity (387 meq/100 g), and surface area (312.7 m2 g-1), which qualified it to be used as a potential basic catalyst for the transesterification of palm oil. Transesterification tests were statistically assessed using a response surface methodology and a central composite design. Considering the effect of how the significant factors interact with each other, the synthetic Na+/Clino achieved a 96.4% experimental biodiesel yield after 70 min at 100 °C in the presence of 2.75 wt% catalyst loading and a 12.5:1 methanol-to-palm-oil ratio. Based on the optimization function of the statistical model, the performance of Na+/Clino can theoretically be enhanced to increase the yield to 98.2% by expanding the test time to 85 min and the loading value to 3 wt%. The product yielded by the Na+/ClinO process is of adequate technical properties, considering the international levels for standard biodiesel (EN 14214 and ASTM D-6751). Finally, the prepared green Na+ doped clinoptilolite had excellent recyclability as a heterogeneous basic catalyst and displayed higher efficiency than several species of previously studied heterogeneous and homogenous catalysts.
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Affiliation(s)
- Mostafa R Abukhadra
- Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef City, Egypt. Materials Technologies and their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef City, Egypt
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Abukhadra MR, Basyouny MG, El-Sherbeeny AM, El-Meligy MA, Luqman M. Sonocogreen Decoration of Clinoptilolite by CaO Nanorods as Ecofriendly Catalysts in the Transesterification of Castor Oil into Biodiesel; Response Surface Studies. ACS OMEGA 2021; 6:1556-1567. [PMID: 33490815 PMCID: PMC7818616 DOI: 10.1021/acsomega.0c05371] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 12/28/2020] [Indexed: 06/12/2023]
Abstract
A CaO/clinoptilolite green nanocomposite (CaO/Clino) was synthesized by a green modification technique using calcium nitrate and green tea extract. The CaO/Clino nanocomposite promises a total basicity of 4.82 mmol OH/g, surface area of 252.4 m2/g, and ion exchange capacity of 134.3 mequiv/100 g, which qualifies the product as an effective catalyst in the transesterification of castor oil. The transesterification performance of the CaO/Clino catalyst was addressed statistically based on the response surface methodology and central composite rotatable design, considering the essential experimental parameters. Based on the interaction effect between the studied variables, the CaO/Clino catalyst can achieve an experimental biodiesel yield of 93.8% after 2.5 h at 120 °C with 3.5 wt % catalyst loading and 15:1 ethanol/castor oil molar ratio. The optimization function of the design suggested enhancement in the performance of the CaO/Clino catalyst to achieve a yield of 95.4% if the test time interval increased to 2.65 h and the ethanol content increased to 16:1 as a molar ratio to castor oil. The produced biodiesel over CaO/ClinO has acceptable technical qualifications according to the international requirements (EN 14214 and ASTM D-6751). The synthetic green CaO/Clino nanocomposite has better recyclability as a heterogeneous catalyst and higher activity than some investigated catalysts in literature.
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Affiliation(s)
- Mostafa R. Abukhadra
- Geology
Department, Faculty of Science, Beni-Suef
University, Beni-Suef City 62511, Egypt
- Materials
Technologies and Their Applications Lab, Geology Department, Faculty
of Science, Beni-Suef University, Beni-Suef City 62511, Egypt
| | - Mohamed Gameel Basyouny
- Materials
Technologies and Their Applications Lab, Geology Department, Faculty
of Science, Beni-Suef University, Beni-Suef City 62511, Egypt
- Physics
Department, Faculty of Science, Beni-Suef
University, Beni-Suef City 62511, Egypt
| | - Ahmed M. El-Sherbeeny
- Industrial
Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
| | | | - Monis Luqman
- Mechanical
Engineering Department, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia
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Metronidazole and Cephalexin degradation by using of Urea/TiO2/ZnFe2O4/Clinoptiloite catalyst under visible-light irradiation and ozone injection. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112764] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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