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Muthukumar C, Panchal J, Reddy K, B G PK. Synergistic photocatalytic degradation of ciprofloxacin under natural sunlight using hot dip galvanization and medical incineration waste residues. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 360:124692. [PMID: 39127335 DOI: 10.1016/j.envpol.2024.124692] [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: 01/20/2024] [Revised: 08/01/2024] [Accepted: 08/05/2024] [Indexed: 08/12/2024]
Abstract
To improve the photodegradation capacity, for the first time, a simple yet efficient photocatalyst was prepared by solely employing hot dip galvanization waste (GW) and fly ash (FA) disposed from medical waste incinerators. Impressively, the as-synthesized photocatalyst (GW-FA) in the ratio 3:1 displayed an outstanding ciprofloxacin degradation efficiency of 98.3% under natural sunlight within 60 min and possessed superior reusability. Herein, adjusting the amount of GW evidenced effective tuning of the electronic band structure and increased active sites. Detailed microscopic morphology, chemical structure, magnetic, and optical properties of GW-FA were studied by UV-DRS, FESEM-EDX, HRTEM, XRD, XPS, ESR, VSM, and AFM, which confirmed the successful fabrication of GW-FA and their outstanding ability to reduce the recombination rate. Besides, the effects of crucial experimental parameters (concentration, pH, and photocatalyst loading) on ciprofloxacin degradation were examined using RSM-BBD. Further, OH• was manifested to be the main active species for the photodegradation of ciprofloxacin. Eventually, GC-MS analysis was employed to deduce plausible photodegradation pathways, and ICP-AES analysis proved that the concentration of leached heavy metals was lower than that of the standard limits for irrigation water. This work establishes a new route for effectively reutilizing waste generated from medical waste incinerators and galvanization industries as a photocatalyst, which otherwise would be disposed in landfills.
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Affiliation(s)
- Chandhini Muthukumar
- Department of Chemical Engineering, BITS Pilani, Dubai Campus, International Academic City, Dubai, United Arab Emirates
| | - Jayesh Panchal
- Cleanco Waste Treatment LLC, Abu Dhabi, United Arab Emirates
| | - Kiran Reddy
- Cleanco Waste Treatment LLC, Abu Dhabi, United Arab Emirates
| | - Prakash Kumar B G
- Department of Chemical Engineering, BITS Pilani, Dubai Campus, International Academic City, Dubai, United Arab Emirates.
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Vijayarengan P, Panchangam SC, Stephen A, Bernatsha G, Murali GK, Loka SS, Manoharan SK, Vemula V, Karri RR, Ravindran G. Highly efficient visible light active iron oxide-based photocatalysts for both hydrogen production and dye degradation. Sci Rep 2024; 14:18299. [PMID: 39112730 PMCID: PMC11306337 DOI: 10.1038/s41598-024-69413-4] [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: 02/16/2024] [Accepted: 08/05/2024] [Indexed: 08/10/2024] Open
Abstract
Photocatalysis is essential for wastewater cleanup and clean energy, and in this current study, we have synthesized nanomaterials (iron oxide-based) for photocatalytic pollution degradation and hydrogen production. The performance of aluminium oxide/ferric oxide (Al2O3/Fe2O3), samarium oxide/ferric oxide (Sm2O3/Fe2O3) and yttrium oxide/ferric oxide (Y2O3/Fe2O3) were compared for the production of hydrogen (H2) and degradation of dye under natural sunlight. Various characterisation equipment was used to characterize these photocatalysts' structure, morphology, elemental content, binding energy and band gap. The hydrogen recovery efficiency of iron oxide-based photocatalysts from sulphide-containing wastewater is assessed. Y2O3/Fe2O3 has shown the highest hydrogen production of 340 mL/h. The influence of operating factors such as sulphide ion concentration, catalyst quantity, and photocatalyst photolytic solution volume on hydrogen production is studied. The optimal values were 0.25 M, 0.2 g/L, and 1L, respectively. The developed photocatalyst passed multiple cycles of stability testing. Fe2O3 has shown the highest Rhodamine B (RhB) dye degradation efficiency of 94% under visible light.
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Affiliation(s)
- Preethi Vijayarengan
- Department of Civil Engineering, Hindustan Institute of Technology and Science, Chennai, 603103, India.
- Department of Civil Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India.
| | - Sri Chandana Panchangam
- Department of Civil Engineering, Annamacharya Institute of Technology and Sciences, Kadapa, 516003, India.
| | - Ananth Stephen
- Department of Physics, KPR Institute of Engineering and Technology, Coimbatore, 641407, India
| | - Gokulanandhan Bernatsha
- Department of Civil Engineering, Hindustan Institute of Technology and Science, Chennai, 603103, India
| | - Gokul Krishnan Murali
- Department of Civil Engineering, Hindustan Institute of Technology and Science, Chennai, 603103, India
| | - Subramanyam Sarma Loka
- Nanoelectrochemistry Laboratory, Department of Chemistry, Yogi Vemana University, Kadapa, 516003, India
| | - Sathish Kumar Manoharan
- Department of Biotechnology, Anand Institute of Higher Technology, OMR, Kazhipattur, Chennai, 603103, India
| | - Venkatramu Vemula
- Department of Physics, Yogi Vemana University, Kadapa, 516 005, India
| | - Rama Rao Karri
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan, BE1410, Brunei Darussalam.
| | - Gobinath Ravindran
- Department of Civil Engineering, SR University, Warangal, Telangana, 506371, India
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Chaieb K, Kouidhi B, Ayed L, Bakr Hosawi S, Abdulbaqi Abdulhakim J, Hajri A, Altayb HN. Enhanced textile dye removal from wastewater using natural biosorbent and Shewanella algae B29: Application of Box Behnken design and genomic approach. BIORESOURCE TECHNOLOGY 2023; 374:128755. [PMID: 36801445 DOI: 10.1016/j.biortech.2023.128755] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/10/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
In this study, Box-Behnken design combining seven factors at three levels were used to optimize the elimination of CI Reactive Red 66 in artificial seawater, by the combination of eco-friendly bio-sorbents and acclimated halotolerant microbial strain. Results showed that macro-algae and cuttlebone (2 %) were the best natural bio-sorbent. Additionally, the selected halotolerant strain able to rapidly remove dye was identified as Shewanella algae B29. The optimization process revealed that decolourization of CI Reactive Red 66 yields reached 91.04 % under the following variable values: dyes concentration (100 mg/l), salinity (30 g/l), peptone (2 %), pH (5), algae C (3 %), cuttlebone (1.5 %) and agitation (150 rpm). The whole genome analysis of S. algae B29 demonstrated the presence of several genes coding for valuable enzymes involved in textile dyes biotransformation, adaptation to stress as well as biofilm formation implying its potential use in biological textile wastewater treatment.
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Affiliation(s)
- Kamel Chaieb
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Bochra Kouidhi
- Laboratory of Analysis, Treatment and Valorization of Pollutants of the Environmental and Products, Faculty of Pharmacy, University of Monastir, Tunisia
| | - Lamia Ayed
- Laboratory of Analysis, Treatment and Valorization of Pollutants of the Environmental and Products, Faculty of Pharmacy, University of Monastir, Tunisia
| | - Salman Bakr Hosawi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | - Azhar Hajri
- Laboratory of Functional Physiology and Valorization of Bio-resources (UR17ES27), Higher Institute of Biotechnology of Beja, Jendouba University, Tunisia
| | - Hisham N Altayb
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia; Center of Artificial Intelligence in Precision Medicines, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Das D, Das BK, Sarkar R, Mukherjee S, Chattopadhyay KK. Highly exfoliated graphitic carbon nitride for efficient removal of wastewater pollutants: Insights from DFT and statistical modelling. ENVIRONMENTAL RESEARCH 2023; 221:115263. [PMID: 36640940 DOI: 10.1016/j.envres.2023.115263] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
The present work entails the synthesis of thermally modified graphitic carbon nitride (GCN) using a two-step thermal treatment procedure and its subsequent use in the photocatalytic reduction of toxic pollutants such as rhodamine B dye (RhB) and chromium (VI) (Cr(VI)) from aquatic environments. The as-synthesised exfoliated GCN (GCNX) is characterised by X-ray diffraction (XRD) analysis, Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDS), Brunauer-Emmett-Teller analysis (BET), diffuse reflectance spectroscopy (DRS), photoluminescence spectroscopy (PL), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). These characterisations helped to elucidate the phase formation, chemical structure, composition, surface area, optical properties, and morphology of the sample. With assistance from a visible light source, GCNX can degrade RhB dye within 30 min in the presence of hydrogen peroxide (H2O2) and reduce Cr(VI) to Cr(III) in under 2 h in the presence of formic acid (FA/HCOOH). Variations in different catalytic parameters, including catalyst amount, pH of the solution, initial RhB or Cr(VI) concentration, and variation in H2O2 or FA concentration, are performed to inspect their effects on the photodegradation activity of GCNX. Moreover, the GCNX catalyst exhibits impressive stability and reusability. A thorough statistical evaluation follows the response surface methodology to understand the complex interaction between the factors contributing to the catalytic activity. The band alignment of differently functionalised GCN blocks in their pristine form and their H2O2/FA-adsorbed states is investigated using first-principles calculations to provide a further understanding of the RhB and Cr(VI) reduction mechanisms. The modified GCN can thus be effectively employed as a low-cost material for removing contamination from aquatic environments.
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Affiliation(s)
- Dimitra Das
- School of Materials Science and Nanotechnology, Jadavpur University, 188, Raja S.C. Mallick Road, Kolkata, 700032, India
| | - Bikram Kumar Das
- Department of Physics, Jadavpur University, 188, Raja S.C. Mallick Road, Kolkata, 700032, India
| | - Ratna Sarkar
- Department of Physics, Jadavpur University, 188, Raja S.C. Mallick Road, Kolkata, 700032, India
| | - Somnath Mukherjee
- Department of Civil Engineering, Jadavpur University, 188, Raja S.C. Mallick Road, Kolkata, 700032, India
| | - Kalyan Kumar Chattopadhyay
- School of Materials Science and Nanotechnology, Jadavpur University, 188, Raja S.C. Mallick Road, Kolkata, 700032, India; Department of Physics, Jadavpur University, 188, Raja S.C. Mallick Road, Kolkata, 700032, India.
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Vijayakumar N, Venkatraman SK, Imthiaz S, Drweesh EA, Elnagar MM, Koppala S, Swamiappan S. Synthesis and characterization of calcium and magnesium based oxides and titanates for photocatalytic degradation of rhodamine B: a comparative study. Sci Rep 2023; 13:3615. [PMID: 36869055 PMCID: PMC9984380 DOI: 10.1038/s41598-023-30013-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 02/14/2023] [Indexed: 03/05/2023] Open
Abstract
The current investigation deals with the simple and ecological synthesis of CaO, MgO, CaTiO3, and MgTiO3 for the photocatalytic dilapidation of rhodamine B dye. CaO was procured from chicken eggshell waste by calcination process, while MgO was produced by solution combustion method using urea as a fuel source. Furthermore, CaTiO3 and MgTiO3 were synthesized through an easy and simple solid-state method by mixing thoroughly the synthesized CaO or MgO with TiO2 before calcination at 900 °C. XRD and EDX investigations confirmed the phase formation of the materials. Moreover, FTIR spectra revealed the existence of Ca-Ti-O, Mg-Ti-O, and Ti-O which resembles the chemical composition of the proposed materials. SEM micrographs revealed that the surface of CaTiO3 is rougher with relatively dispersed particles compared to MgTiO3, reflecting a higher surface area of CaTiO3. Diffuse reflectance spectroscopy investigations indicated that the synthesized materials can act as photocatalysts under UV illumination. Accordingly, CaO and CaTiO3 effectively degraded rhodamine B dye within 120 min with a photodegradation activity of 63% and 72%, respectively. In contrast, the photocatalytic degradation activity of MgO and MgTiO3 was much lower, since only 21.39 and 29.44% of the dye were degraded, respectively after 120 min of irradiation. Furtheremore, the photocatalytic activity of the mixture from both Ca and Mg titanates was 64.63%. These findings might be valuable for designing potential and affordable photocatalysts for wastewater purification.
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Affiliation(s)
- Naveensubramaniam Vijayakumar
- grid.412813.d0000 0001 0687 4946Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu 632014 India
| | - Senthil Kumar Venkatraman
- grid.412813.d0000 0001 0687 4946Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu 632014 India
| | - Syed Imthiaz
- grid.412813.d0000 0001 0687 4946Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu 632014 India
| | - Elsayed A. Drweesh
- grid.419725.c0000 0001 2151 8157Department of Inorganic Chemistry, National Research Centre, 33 El Bohouth St. (Former EltahrirSt.), Dokki, Giza, 12622 Egypt
| | - Mohamed M. Elnagar
- grid.419725.c0000 0001 2151 8157Department of Inorganic Chemistry, National Research Centre, 33 El Bohouth St. (Former EltahrirSt.), Dokki, Giza, 12622 Egypt
| | - Sivasankar Koppala
- grid.218292.20000 0000 8571 108XFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093 China
| | - Sasikumar Swamiappan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
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Bina B, Fatehizadeh A, Taheri E, Heydari M, Darvishmotevalli M, Bazmeh A. Atenolol removal from aqueous solutions using Bi 2O 3/TiO 2 under UV-C and visible light irradiations. INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY 2022:1-22. [DOI: 10.1080/03067319.2022.2085045] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 05/25/2022] [Indexed: 09/21/2023]
Affiliation(s)
- Bijan Bina
- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Environmental Health Engineering Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, School of Health, Isfahan University of Medical Sciences, Isfahan Iran
| | - Ali Fatehizadeh
- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Environmental Health Engineering Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, School of Health, Isfahan University of Medical Sciences, Isfahan Iran
| | - Ensiyeh Taheri
- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Environmental Health Engineering Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, School of Health, Isfahan University of Medical Sciences, Isfahan Iran
| | - Maryam Heydari
- Department of Environmental Health Engineering, School of Health, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Mohammad Darvishmotevalli
- Research Center for Health, Safety and Environment (RCHSE), Alborz University of Medical Sciences, Karaj, Iran
| | - Asiyeh Bazmeh
- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Environmental Health Engineering, Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan
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Phang SJ, Lee J, Wong VL, Tan LL, Chai SP. Synergistic effects of the hybridization between boron-doped carbon quantum dots and n/n-type g-C 3N 4 homojunction for boosted visible-light photocatalytic activity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:41272-41292. [PMID: 35088270 DOI: 10.1007/s11356-021-18253-0] [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: 08/24/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
Dye wastewater has raised a prevalent environmental concern due to its ability to prevent the penetration of sunlight through water, thereby causing a disruption to the aquatic ecosystem. Carbon quantum dots (CQDs) are particularly sought after for their highly tailorable photoelectrochemical and optical properties. Simultaneously, graphitic carbon nitride (g-C3N4) has gained widespread attention due to its suitable band gap energy as well as excellent chemical and thermal stabilities. Herein, a novel boron-doped CQD (BCQD)-hybridized g-C3N4 homojunction (CN) nanocomposite was fabricated via a facile hydrothermal route. The optimal photocatalyst sample, 1-BCQD/CN (with a 1:3 mass ratio of boron to CQD) accomplished a Rhodamine B (RhB, 10 mg/L) degradation efficiency of 96.8% within 4 h under an 18 W LED light irradiation. The kinetic rate constant of 1.39 × 10-2 min-1 achieved by the optimum sample was found to be 3.6- and 2.8-folds higher than that of pristine CN and un-doped CQD/CN, respectively. The surface morphology, crystalline structure, chemical composition and optical properties of photocatalyst samples were characterized via TEM, FESEM-EDX, XRD, FTIR, UV-Vis DRS and FL spectrometer. Based on the scavenging tests, it was revealed that the photogenerated holes (h+), superoxide anions (∙O2-) and hydroxyl radicals (∙OH) were the primary reactive species responsible for the photodegradation process. Overall, the highly efficient 1-BCQD/CN composite with excellent photocatalytic activity could provide a cost-effective and robust means to address the increasing concerns over global environmental pollution.
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Affiliation(s)
- Sue Jiun Phang
- School of Engineering and Physical Sciences, Heriot-Watt University Malaysia, Jalan Venna P5/2, Precinct 5, 62200, Putrajaya, Malaysia
| | - Jiale Lee
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500, Bandar Sunway, Selangor, Malaysia
| | - Voon-Loong Wong
- School of Engineering and Physical Sciences, Heriot-Watt University Malaysia, Jalan Venna P5/2, Precinct 5, 62200, Putrajaya, Malaysia
| | - Lling-Lling Tan
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500, Bandar Sunway, Selangor, Malaysia.
| | - Siang-Piao Chai
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500, Bandar Sunway, Selangor, Malaysia
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Optimization of solar photocatalytic biodegradability of seawater using statistical modelling. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Kamali SR, Chen CN, Agrawal DC, Wei TH. Sulfur-doped carbon dots synthesis under microwave irradiation as turn-off fluorescent sensor for Cr(III). J Anal Sci Technol 2021. [DOI: 10.1186/s40543-021-00298-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
AbstractThis study synthesized a facile and high sensitive fluorescent probe based on sulfur-doped carbon dots (S-CDs) using a one-step microwave irradiation method. The probe exhibited a strong blue emission and a high quantum yield (QY) of 36.40%. In the detection, the presence of trivalent chromium (Cr(III)) strongly quenched the PL intensity of S-CDs by the inner filter effect (IFE) quenching mechanism of Cr(III) on the S-CDs. The S-CDs exhibited good sensitivity to turn-off Cr(III) detection with a linear range concentration of 0–45 μM and a detection limit of 0.17 μM. Furthermore, the proposed method has been successfully applied for Cr(III) detection in natural water samples with the 93.68–106.20% recoveries.
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