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Zubrik A, Jáger D, Mačingová E, Matik M, Hredzák S. Spontaneous degradation of methylene blue adsorbed on magnetic biochars. Sci Rep 2023; 13:14773. [PMID: 37679438 PMCID: PMC10484945 DOI: 10.1038/s41598-023-39976-9] [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: 05/12/2023] [Accepted: 08/02/2023] [Indexed: 09/09/2023] Open
Abstract
Methylene blue (MB) is one of the most widely studied organic molecules in the treatment of wastewater. Sorption, biodegradation, photodegradation, electrochemical oxidation, ozonation, and other advanced oxidative processes are frequently used to remove this dye from water solutions. The unexpected degradation of MB adsorbed on magnetic biochar from aqueous solution was observed. We found that the conditions of handling, such as drying temperature and storage period, substantially influenced the stability of the dye fixed on the (magnetic) carbon adsorbents. Twelve substances were identified by mass spectrometry as products of decomposition, mostly demethylated, oxidated, and hydroxylated substances. The decomposition of MB was further investigated using non-magnetic carbon biochars and aluminosilicate mineral zeolite. Our findings of the spontaneous decomposition of MB and the identification of the species of degradation offer a new approach to evaluate the mechanism of adsorption, the process of regeneration, and the toxicity of treated solutions.
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Affiliation(s)
- Anton Zubrik
- Institute of Geotechnics of the Slovak Academy of Sciences, Watsonova 45, 04001, Kosice, Slovakia.
| | - Dávid Jáger
- Institute of Geotechnics of the Slovak Academy of Sciences, Watsonova 45, 04001, Kosice, Slovakia
| | - Eva Mačingová
- Institute of Geotechnics of the Slovak Academy of Sciences, Watsonova 45, 04001, Kosice, Slovakia
| | - Marek Matik
- Institute of Geotechnics of the Slovak Academy of Sciences, Watsonova 45, 04001, Kosice, Slovakia
| | - Slavomír Hredzák
- Institute of Geotechnics of the Slovak Academy of Sciences, Watsonova 45, 04001, Kosice, Slovakia
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BARTLOVÁ M, ZIÓŁKOWSKA D, POSPIECH M, SHYICHUK A, TREMLOVÁ B. Determination of carrageenan in jellies with new methylene blue dye using spectrophotometry, smartphone-based colorimetry and spectrophotometric titration. FOOD SCIENCE AND TECHNOLOGY 2021. [DOI: 10.1590/fst.01220] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Marie BARTLOVÁ
- University of Veterinary and Pharmaceutical Sciences Brno, Czech Republic
| | | | - Matej POSPIECH
- University of Veterinary and Pharmaceutical Sciences Brno, Czech Republic
| | | | - Bohuslava TREMLOVÁ
- University of Veterinary and Pharmaceutical Sciences Brno, Czech Republic
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Matos J, Arcibar-Orozco J, Poon PS, Pecchi G, Rangel-Mendez JR. Influence of phosphorous upon the formation of DMPO- OH and POBN-O2¯ spin-trapping adducts in carbon-supported P-promoted Fe-based photocatalysts. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112362] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Reddy KR, Reddy CV, Nadagouda MN, Shetti NP, Jaesool S, Aminabhavi TM. Polymeric graphitic carbon nitride (g-C 3N 4)-based semiconducting nanostructured materials: Synthesis methods, properties and photocatalytic applications. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 238:25-40. [PMID: 30844543 DOI: 10.1016/j.jenvman.2019.02.075] [Citation(s) in RCA: 138] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 02/12/2019] [Accepted: 02/16/2019] [Indexed: 05/06/2023]
Abstract
In recent years, various facile and low-cost methods have been developed for the synthesis of advanced nanostructured photocatalytic materials. These catalysts are required to mitigate the energy crisis, environmental deterioration, including water and air pollution. Among the various semiconductors explored, recently novel classes of polymeric graphitic carbon nitride (g-C3N4)-based heterogeneous photocatalysts have established much greater importance because of their unique physiochemical properties, large surface area, low price, and long service life, ease of synthesis, product scalability, controllable band gap properties, low toxicity, and high photocatalytic activity. The present comprehensive review focuses on recent achievements in a number of facile chemical synthesis methods for semiconducting polymeric carbon nitrides and their heterogeneous nanohybrids with various dopants, nanostructured metals, metal oxides, and nanocarbons, as well as the parameters influencing their physiochemical properties and photocatalytic efficiency, which are discussed with reference to various catalytic applications such as air (NOx) purification, wastewater treatment, hydrogen generation, CO2 reduction, and chemical transformation. The mechanisms for the superior photocatalytic activity of polymeric g-C3N4-based heterogeneous photocatalysts are also discussed. Finally, the challenges, prospects, and future directions for photocatalytic polymeric g-C3N4-based semiconducting materials are described.
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Affiliation(s)
- Kakarla Raghava Reddy
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Ch Venkata Reddy
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea
| | - Mallikarjuna N Nadagouda
- Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45324, United States
| | - Nagaraj P Shetti
- Department of Chemistry, K. L. E. Institute of Technology, Gokul, Hubballi, 580030, Affiliated to Visvesvaraya Technological University, Karnataka, India
| | - Shim Jaesool
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea.
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Elmorsi RR, El-Wakeel ST, Shehab El-Dein WA, Lotfy HR, Rashwan WE, Nagah M, Shaaban SA, Sayed Ahmed SA, El-Sherif IY, Abou-El-Sherbini KS. Adsorption of Methylene Blue and Pb 2+ by using acid-activated Posidonia oceanica waste. Sci Rep 2019; 9:3356. [PMID: 30833622 PMCID: PMC6399213 DOI: 10.1038/s41598-019-39945-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 02/04/2019] [Indexed: 12/01/2022] Open
Abstract
Dead leaves of seagrass Posidonia oceanica were activated by using one mol L-1 acetic acid and used as an eco-adsorbent for the removal of methylene blue (MB) and Pb2+ from aqueous solutions. The seagrass was characterized by chemical and physical measurements that confirmed the acid-activation of seagrass. The favourable conditions for MB and Pb2+ adsorption onto the activated seagrass (SGa) were determined to be a pH range of 2-12 and ≥6, an adsorbent dosage of 3.0 and 0.5 g L-1, respectively, and a shaking time of 30 min, which are suitable for a wide range of wastewaters. The equilibrium data were analysed using the Langmuir, Freundlich and Dubinin-Raduskavich-Kaganer (DRK) adsorption isotherm models. The Freundlich and DRK models best describe the adsorption processes of MB and Pb2+, on SGa with capacities of 2681.9 and 631.13 mg g-1, respectively. The adsorption isotherm fitting and thermodynamic studies suggest that the adsorption mechanism of MB may combine electrostatic and physical multilayer adsorption processes, in which MB may be present as monomers as well as dimers and trimers which were confirmed from UV spectroscopy whereas Pb2+ is chemically adsorbed onto SGa. The pseudo-2nd-order kinetic model was utilized to investigate the kinetics of adsorption processes. The removal process was successfully applied for MB-spiked brackish waste water from Manzala Lake, Egypt, with removal efficiencies of 91.5-99.9%.
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Affiliation(s)
- Randa R Elmorsi
- Marine Chemistry Lab., National Institute of Oceanography and Fisheries, Suez branch, Adabiyah-Suez road, Attaqa district, Suez, Egypt
| | - Shaimaa T El-Wakeel
- Department of Water Research, National Research Centre, 33 El Bohouth st. (former Eltahrir st.), P.O. 12622, Dokki, Giza, Egypt
| | - Waleed A Shehab El-Dein
- Department of Mathematics & Engineering Physics, Faculty of Engineering, Mansoura University, El-Mansoura, Egypt
| | - Hesham R Lotfy
- Basic Sciences Department, Faculty of Engineering, Delta University for Science and Technology, Coastal High Way, Gamasa, Al-Dakahlia, Egypt.
| | - Wafaa E Rashwan
- Department of Physical Chemistry, National Research Centre, 33 El Bohouth st. (former Eltahrir st.), P.O. 12622, Dokki, Giza, Egypt
| | - Mohammed Nagah
- Department of Microbial Chemistry, National Research Centre, 33 El Bohouth st. (former Eltahrir st.), P.O. 12622, Dokki, Giza, Egypt
| | - Seham A Shaaban
- Department of Catalysis, Petroleum Refining Division, Egyptian Petroleum Research Institute, Cairo, Egypt
| | - Sohair A Sayed Ahmed
- Department of Physical Chemistry, National Research Centre, 33 El Bohouth st. (former Eltahrir st.), P.O. 12622, Dokki, Giza, Egypt
| | - Iman Y El-Sherif
- Department of Water Research, National Research Centre, 33 El Bohouth st. (former Eltahrir st.), P.O. 12622, Dokki, Giza, Egypt
| | - Khaled S Abou-El-Sherbini
- Department of Inorganic Chemistry, National Research Centre, 33 El Bohouth st. (former Eltahrir st.), P.O. 12622, Dokki, Giza, Egypt.
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Stîngă G, Băran A, Iovescu A, Aricov L, Anghel DF. Monitoring the confinement of methylene blue in pyrene labeled poly(acrylic acid). J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.10.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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