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Song T, Wang Z, Jiang Y, Yang S, Deng Q. Research Progress on the Degradation of Organic Pollutants in Wastewater via Ultrasound/Periodate Systems: A Review. Molecules 2024; 29:2562. [PMID: 38893438 PMCID: PMC11173537 DOI: 10.3390/molecules29112562] [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: 04/21/2024] [Revised: 05/23/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
In recent years, the efficient removal of organic pollutants from wastewater has emerged as a critical area of global research interest. Against this backdrop, an array of innovative technologies for wastewater treatment has been developed. Among numerous advanced oxidation processes (AOPs), periodate (PI), an emerging oxidizing agent in AOPs, has garnered significant attention from researchers. Particularly, the integration of ultrasound (US)-activated PI systems has been recognized as an exceptionally promising approach for the synergistic degradation of organic pollutants in wastewater. In this paper, we conducted a thorough analysis of the mechanisms underlying the degradation of organic pollutants using the US/PI system. Furthermore, we comprehensively delineated the effects of ultrasonic power, periodate concentration, temperature, pH, coexisting inorganic ions, and dissolved organic matter on the removal efficiency of organic pollutants and summarized application cases of the US/PI system for the degradation of different pollutants. Finally, we also offered prospective discussions on the future trajectories of US/PI technology development.
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Affiliation(s)
- Tiehong Song
- Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, China; (Z.W.)
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Yang N, Jun BM, Choi JS, Park CM, Jang M, Son A, Nam SN, Yoon Y. Ultrasonic treatment of dye chemicals in wastewater: A review. CHEMOSPHERE 2024; 354:141676. [PMID: 38462187 DOI: 10.1016/j.chemosphere.2024.141676] [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: 01/23/2024] [Revised: 03/07/2024] [Accepted: 03/08/2024] [Indexed: 03/12/2024]
Abstract
The existence of pollutants, such as toxic organic dye chemicals, in water and wastewater raises concerns as they are inadequately eliminated through conventional water and wastewater treatment methods, including physicochemical and biological processes. Ultrasonic treatment has emerged as an advanced treatment process that has been widely applied to the decomposition of recalcitrant organic contaminants. Ultrasonic treatment has several advantages, including easy operation, sustainability, non-secondary pollutant production, and saving energy. This review examines the elimination of dye chemicals and categorizes them into cationic and anionic dyes based on the existing literature. The objectives include (i) analyzing the primary factors (water quality and ultrasonic conditions) that influence the sonodegradation of dye chemicals and their byproducts during ultrasonication, (ii) assessing the impact of the different sonocatalysts and combined systems (with ozone and ultraviolet) on sonodegradation, and (iii) exploring the characteristics-based removal mechanisms of dyes. In addition, this review proposes areas for future research on ultrasonic treatment of dye chemicals in water and wastewater.
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Affiliation(s)
- Narae Yang
- Department of Environmental Science and Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Byung-Moon Jun
- Radwaste Management Center, Korea Atomic Energy Research Institute (KAERI), 111 Daedeok-Daero 989beon-gil, Yuseong-Gu, Daejeon 34057, Republic of Korea
| | - Jong Soo Choi
- Department of Environmental Science and Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, 447-1 Wolgye-dong Nowon-gu, Seoul, Republic of Korea
| | - Ahjeong Son
- Department of Environmental Science and Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Seong-Nam Nam
- Military Environmental Research Center, Korea Army Academy at Yeongcheon, 495 Hoguk-ro, Gogyeong-myeon, Yeongcheon-si, Gyeongsangbuk-do, 38900, Republic of Korea.
| | - Yeomin Yoon
- Department of Environmental Science and Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea.
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Ben SK, Gupta S, Harit AK, Raj KK, Chandra V. Enhanced photocatalytic degradation of Reactive Red 120 dye under solar light using BiPO 4@g-C 3N 4 nanocomposite photocatalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:84325-84344. [PMID: 35779219 DOI: 10.1007/s11356-022-21675-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
Azo dyes such as Reactive Red 120 raise great concerns about their increased harmfulness. Photocatalytic degradation is considered to be one of the most efficient techniques for Reactive Red 120 degradation. Herein, a highly solar active graphitic carbon nitride-assisted bismuth phosphate nanocomposite (BiPO4@g-C3N4) was synthesized by the thermal decomposition of melamine followed by the co-precipitation method. Various analytical techniques were utilized to characterize the prepared BiPO4, g-C3N4, and BiPO4@g-C3N4 nanocomposites. Scanning electron microscopy (SEM) shows the nanorods and particle morphology of the bare BiPO4 and g-C3N4 respectively. Furthermore, the optical band gap energies of the BiPO4, g-C3N4, and BiPO4@g-C3N4 nanocomposite have been calculated to be 4.20, 2.66, and 2.68 eV respectively. Under sunlight, the BiPO4@g-C3N4 nanocomposite showed higher photocatalytic activity towards the degradation of RR120. The BiPO4@g-C3N4 nanocomposite efficiently degrades the RR120 under sunlight with a higher first-order reaction rate constant of 0.0145 min-1. This is seven times higher than that of bare BiPO4 (0.0019 min-1) nanorods and four times greater than g-C3N4 (0.0036 min-1). The photocatalytic efficiency was found to be maximum at pH 4 and decreased as the pH of the solution increased. Even after five recycle runs, the catalyst performance of the RR120 dye has decreased by less than 5%, indicating the high stability of the BiPO4@g-C3N4 nanocomposite. Furthermore, the radical trapping experiment demonstrates that the active species in the dye degradation process are holes and hydroxide radicals. The photocatalytic mechanism was proposed for the BiPO4@g-C3N4 nanocomposite and further validated by the electrochemical impedance spectroscopy analysis.
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Affiliation(s)
- Sachin Kumar Ben
- Department of Chemistry, Dr. Harisingh Gour University, Sagar, M.P., 470003, India
| | - Sakshi Gupta
- Department of Chemistry, Dr. Harisingh Gour University, Sagar, M.P., 470003, India
| | - Amit Kumar Harit
- Department of Chemistry, Dr. Harisingh Gour University, Sagar, M.P., 470003, India
| | - Krishna Kumar Raj
- Department of Chemistry, Dr. Harisingh Gour University, Sagar, M.P., 470003, India
| | - Vimlesh Chandra
- Department of Chemistry, Dr. Harisingh Gour University, Sagar, M.P., 470003, India.
- Centre for Applied Chemistry, School of Applied Material Sciences, Central University of Gujarat, Gandhinagar, India.
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Joya-Cárdenas DR, Rodríguez-Caicedo JP, Gallegos-Muñoz A, Zanor GA, Caycedo-García MS, Damian-Ascencio CE, Saldaña-Robles A. Graphene-Based Adsorbents for Arsenic, Fluoride, and Chromium Adsorption: Synthesis Methods Review. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3942. [PMID: 36432228 PMCID: PMC9698471 DOI: 10.3390/nano12223942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/13/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Water contamination around the world is an increasing problem due to the presence of contaminants such as arsenic, fluoride, and chromium. The presence of such contaminants is related to either natural or anthropogenic processes. The above-mentioned problem has motivated the search for strategies to explore and develop technologies to remove these contaminants in water. Adsorption is a common process employed for such proposals due to its versatility, high adsorption capacity, and lower cost. In particular, graphene oxide is a material that is of special interest due to its physical and chemical properties such as surface area, porosity, pore size as well as removal efficiency for several contaminants. This review shows the advances, development, and perspectives of materials based on GO employed for the adsorption of contaminants such as arsenite, arsenate, fluoride, and hexavalent chromium. We provided a detailed discussion of the synthesis techniques and their relationship with the adsorption capacities and other physical properties as well as pH ranges employed to remove the contaminants. It is concluded that the adsorption capacity is not proportional to the surface area in all the cases; instead, the synthesis method, as well as the functional groups, play an important role. In particular, the sol-gel synthesis method shows better adsorption capacities.
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Affiliation(s)
| | | | | | - Gabriela A. Zanor
- Graduate Program in Biosciences, University of Guanajuato, Irapuato 36500, Mexico
- Department of Environmental Engineering, University of Guanajuato, Irapuato 36500, Mexico
| | - Maya S. Caycedo-García
- Facultad de Ingenierías y Tecnologías, Instituto de Investigación Xerira, Universidad de Santander, Bucaramanga 680003, Colombia
| | | | - Adriana Saldaña-Robles
- Graduate Program in Biosciences, University of Guanajuato, Irapuato 36500, Mexico
- Department of Agricultural Engineering, University of Guanajuato, Irapuato 36500, Mexico
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5
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Thangavel S, Pazhamalai P, Krishnamoorthy K, Sivalingam Y, Arulappan D, Mohan V, Kim SJ, Venugopal G. Ferroelectric-semiconductor BaTiO 3-Ag 2O nanohybrid as an efficient piezo-photocatalytic material. CHEMOSPHERE 2022; 292:133398. [PMID: 34954192 DOI: 10.1016/j.chemosphere.2021.133398] [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: 05/13/2021] [Revised: 11/30/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
Piezo-photocatalysis is a new concept of utilizing nanohybrids comprising piezoelectric and photocatalytic materials for enhancement in advanced oxidation process under the presence of light and mechanical energy. In this study, we explored the effectiveness of piezo-photocatalysis via examining their catalytic activity towards the degradation of azo dye (Rhodamine-B) and standard pollutant (Phenol) catalyzed by ferroelectric-semiconductor (BaTiO3-Ag2O) nanohybrids. Further, the enhancement in piezo-photocatalysis has been achieved via persulfate activation and the role of free radicals was examined by quenchers. A plausible mechanism for the improved piezo-photocatalysis of BaTiO3-Ag2O nanohybrid using persulfate activation has been discussed in detail. The removal mechanism of Rhodamine-B has been investigated using analytical techniques such as HPLC and EPR. Our experimental study demonstrated that the combination of piezo-photocatalysis with persulfate activation will provide higher reaction rate which will be beneficial towards the degradation of complex molecular pollutants derived from industrial sectors.
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Affiliation(s)
- Sakthivel Thangavel
- Nanomaterials & System Lab, Major of Mechatronics Engineering, Faculty of Applied Energy System, Jeju National University, Jeju, 63243, South Korea; State Key Laboratory for Mechanical Behavior of Materials, Xian Jiaotong University, Xi'an, 710049, Shaanxi, China
| | - Parthiban Pazhamalai
- Nanomaterials & System Lab, Major of Mechatronics Engineering, Faculty of Applied Energy System, Jeju National University, Jeju, 63243, South Korea
| | - Karthikeyan Krishnamoorthy
- Nanomaterials & System Lab, Major of Mechatronics Engineering, Faculty of Applied Energy System, Jeju National University, Jeju, 63243, South Korea
| | - Yuvaraj Sivalingam
- Laboratory for Sensors, Energy and Electronic Devices, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - Durairaj Arulappan
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Vigneshwaran Mohan
- Nanomaterials & System Lab, Major of Mechatronics Engineering, Faculty of Applied Energy System, Jeju National University, Jeju, 63243, South Korea; Department of Materials Science, School of Technology, Central University of Tamil Nadu, Thiruvarur, 610 005, Tamil Nadu, India
| | - Sang-Jae Kim
- Nanomaterials & System Lab, Major of Mechatronics Engineering, Faculty of Applied Energy System, Jeju National University, Jeju, 63243, South Korea; Nanomaterials & System Lab, Major of Mechanical System Engineering, College of Engineering, Jeju National University, Jeju, 63243, South Korea; Research Institute of Energy New Industry, Jeju National University, Jeju, 63243, South Korea.
| | - Gunasekaran Venugopal
- Department of Materials Science, School of Technology, Central University of Tamil Nadu, Thiruvarur, 610 005, Tamil Nadu, India.
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6
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Green chemistry approach for the functionalization of reduced graphene and ZnO as efficient supercapacitor application. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130704] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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7
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Behura R, Sakthivel R, Das N. Synthesis of cobalt ferrite nanoparticles from waste iron ore tailings and spent lithium ion batteries for photo/sono-catalytic degradation of Congo red. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.03.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Avashthi G, Singh M. Ultrasound accelerated near-edge functionalized heterogeneous graphene oxide sonocatalyst for surface optical bandwidth efficacy and in situ sonothermocatalysis. NEW J CHEM 2021. [DOI: 10.1039/d0nj06079h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Ultrasound-accelerated optically active heterogeneous catalyst and sonochemical time driven thermodynamic dye catalysis.
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Affiliation(s)
- Gopal Avashthi
- School of Chemical Sciences
- Central University of Gujarat
- Gandhinagar-382030
- India
| | - Man Singh
- School of Chemical Sciences
- Central University of Gujarat
- Gandhinagar-382030
- India
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9
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Ahmadi S, Rahdar A, Igwegbe CA, Mortazavi-Derazkola S, Banach AM, Rahdar S, Singh AK, Rodriguez-Couto S, Kyzas GZ. Praseodymium-doped cadmium tungstate (CdWO4) nanoparticles for dye degradation with sonocatalytic process. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114792] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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10
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Venugopal G, Thangavel S, Vasudevan V, Zoltán K. Efficient visible-light piezophototronic activity of ZnO-Ag8S hybrid for degradation of organic dye molecule. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 2020. [DOI: 10.1016/j.jpcs.2020.109473] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Chen Z, Liu X, Huang C, Li J, Shen X. Artificial Cytochrome c Mimics: Graphene Oxide-Fe(III) Complex-Coated Molecularly Imprinted Colloidosomes for Selective Photoreduction of Highly Toxic Pollutants. ACS APPLIED MATERIALS & INTERFACES 2020; 12:6615-6626. [PMID: 31904207 DOI: 10.1021/acsami.9b19186] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Our previous works showed that the molecularly imprinted TiO2 photocatalyst has been one of the most efficient materials for selective photooxidation of highly toxic organic pollutants (HTOPs) from complicated wastewater. However, some highly toxic pollutants (e.g., heavy metals) are very stable under the oxidizing environment. Therefore, the design of enzyme-like catalysts to selectively reduce highly toxic pollutants is extremely needed. In this work, inspired by the bioreduction ability of cytochrome c (cyt c, a heme containing metalloprotein), we presented a simple and efficient way to generate an artificial cyt c mimic (ACM) using graphene oxide (GO)-Fe(III) complex-coated molecularly imprinted colloidosomes. Prior to loading of Fe(III) centers to GO for constructing ACMs, GO-coated molecularly imprinted colloidosomes were synthesized via Pickering emulsion polymerization. Similar to a nature cyt c, the ACM contained both the molecular recognition element (molecularly imprinted cavity) and the non-heme electron sink (GO-Fe(III) complex), which resulted in the ACMs having good selectivity toward the enzyme-like reduction of the highly toxic target Cr(VI). Moreover, by using HepG2 cells as model cells, the Cr(VI) solution after treating by ACMs was proved to be safe and nontoxic. To confirm that the present method was universal for constructing ACMs, various GO-Fe(III) complex-coated molecularly imprinted colloidosomes, which could selectively photoreduce other highly toxic inorganic ions and organic pollutants, were also investigated. The ACMs described herein will act as a vector that encourages the design of more functional non-heme enzymes in sensing, environmental separation, clinical diagnose, and delivery of therapeutic agents.
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Affiliation(s)
- Zhiliang Chen
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health , Tongji Medical College, Huazhong University of Science and Technology , #13 Hangkong Road , Wuhan , Hubei 430030 , China
- Department of Forensic Medicine , Huazhong University of Science and Technology , #13 Hangkong Road , Wuhan , Hubei 430030 , China
| | - Xiaojie Liu
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health , Tongji Medical College, Huazhong University of Science and Technology , #13 Hangkong Road , Wuhan , Hubei 430030 , China
| | - Chuixiu Huang
- Department of Forensic Medicine , Huazhong University of Science and Technology , #13 Hangkong Road , Wuhan , Hubei 430030 , China
| | - Jilai Li
- Institute of Theoretical Chemistry , Jilin University , Changchun , Jilin 130023 , China
| | - Xiantao Shen
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health , Tongji Medical College, Huazhong University of Science and Technology , #13 Hangkong Road , Wuhan , Hubei 430030 , China
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12
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Gholami P, Khataee A, Vahid B. Integration of Polydopamine and Fe3O4 Nanoparticles with Graphene Oxide to Fabricate an Efficient Recoverable Catalyst for the Degradation of Sulfadiazine. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05130] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Peyman Gholami
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
- Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
| | - Behrouz Vahid
- Department of Chemical Engineering, Tabriz Branch, Islamic Azad University, 51579-44533 Tabriz, Iran
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Gholami P, Khataee A, Soltani RDC, Bhatnagar A. A review on carbon-based materials for heterogeneous sonocatalysis: Fundamentals, properties and applications. ULTRASONICS SONOCHEMISTRY 2019; 58:104681. [PMID: 31450341 DOI: 10.1016/j.ultsonch.2019.104681] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/04/2019] [Accepted: 07/08/2019] [Indexed: 06/10/2023]
Abstract
Contamination of water resources by refractory organic pollutants is of great environmental and health concern because these compounds are not degraded in the conventional wastewater treatment plants. In recent years, sonocatalytic treatment has been considered as a promising advanced oxidation technique for the acceptable degradation and mineralization of the recalcitrant organic compounds. For this purpose, various sonocatalysts have been utilized in order to accelerate the degradation process. The present review paper provides a summary of published studies on the sonocatalytic degradation of various organic pollutants based on the application of carbon-based catalysts, including carbon nanotubes (CNTs), graphene (GR), graphene oxide (GO), reduced graphene oxide (rGO), activated carbon (AC), biochar (BC), graphitic carbon nitride (g-C3N4), carbon doped materials, buckminsterfullerene (C60) and mesoporous carbon. The mechanism of sonocatalytic degradation of different organic compounds by the carbon-based sonocatalysts has been well assessed based on the literature. Moreover, the details of experimental conditions such as sonocatalyst dosage, solute concentration, ultrasound power, applied frequency, initial pH and reaction time related to each study have also been discussed in this review. Finally, concluding remarks as well as future challenges in this research field regarding new areas of study are also discussed and recommended.
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Affiliation(s)
- Peyman Gholami
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Materials Science and Nanotechnology Engineering, Near East University, 99138 Nicosia, North Cyprus, Mersin 10, Turkey.
| | - Reza Darvishi Cheshmeh Soltani
- Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, 38196-93345 Arak, Iran
| | - Amit Bhatnagar
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
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14
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Cherifi Y, Addad A, Vezin H, Barras A, Ouddane B, Chaouchi A, Szunerits S, Boukherroub R. PMS activation using reduced graphene oxide under sonication: Efficient metal-free catalytic system for the degradation of rhodamine B, bisphenol A, and tetracycline. ULTRASONICS SONOCHEMISTRY 2019; 52:164-175. [PMID: 30477793 DOI: 10.1016/j.ultsonch.2018.11.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 10/27/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
This study addresses the influence of ultrasound irradiation on the activation of peroxymonosulfate (PMS) using reduced graphene oxide (rGO) under metal-free conditions for the catalytic degradation of rhodamine B (RhB), bisphenol A (BPA) and tetracycline (TC). Our results revealed that the combination of PMS/rGO and ultrasonication enhanced significantly the degradation rate, reaching full degradation in relatively short times with total organic carbon (TOC) removal exceeding 85% of the investigated pollutants. In contrast, under these experimental conditions, rGO/ultrasound and PMS/ultrasound achieved less than 20% degradation of the same pollutants. Electron paramagnetic resonance (EPR) studies along with quenching experiments suggested that hydroxyl radicals (OH) are the dominant reactive species in the degradation process. Furthermore, inductively coupled plasma atomic emission spectroscopy (ICP-AES) and EPR data revealed the presence of trace manganese (Mn) in rGO. To elucidate the role of Mn on the degradation process, rGO was subjected to hot acid treatment for 48 h to remove trace Mn. While the chemical composition of rGO was not significantly altered by this chemical treatment, the degradation efficiency decreased upon Mn dissolution. The result suggests that trace metal in rGO might account for the efficiency of PMS activation. Finally, plausible degradation pathways were proposed based on LC-MS analysis of the reaction intermediates.
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Affiliation(s)
- Yacine Cherifi
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France; Laboratoire de Chimie Appliquée et Génie Chimique de l'Université Mouloud Mammeri de Tizi-Ouzou, Algeria
| | - Ahmed Addad
- Univ. Lille, CNRS, UMR 8207 - UMET, F-59000 Lille, France
| | - Hervé Vezin
- Univ. Lille, UMR CNRS 8516-LASIR Laboratoire de Spectrochimie Infrarouge et Raman 59655 Villeneuve d'Ascq, France
| | - Alexandre Barras
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France
| | - Baghdad Ouddane
- Univ. Lille, UMR CNRS 8516-LASIR Laboratoire de Spectrochimie Infrarouge et Raman 59655 Villeneuve d'Ascq, France
| | - Ahcène Chaouchi
- Laboratoire de Chimie Appliquée et Génie Chimique de l'Université Mouloud Mammeri de Tizi-Ouzou, Algeria
| | - Sabine Szunerits
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France.
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15
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Sarma GK, Sen Gupta S, Bhattacharyya KG. Nanomaterials as versatile adsorbents for heavy metal ions in water: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:6245-6278. [PMID: 30623336 DOI: 10.1007/s11356-018-04093-y] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 12/27/2018] [Indexed: 05/21/2023]
Abstract
Over the years, heavy metal pollution has become a very serious environmental problem worldwide. Even though anthropogenic sources are believed to be the major cause of heavy metal pollution, they can also be introduced into the environment from natural geogenic sources. Heavy metals, because of their toxicity and carcinogenicity, are considered to be the most harmful contaminants of groundwater as well as surface water, a serious threat to both human and aquatic life. Nanomaterials due to their size and higher surface area to volume ratio show some unique properties compared to their bulk counterpart and have drawn significant attention of the scientific community in the last few decades. This large surface area can make these materials as effective adsorbents in pollution remediation studies. In this review, an attempt has been made to focus on the applicability of different types of nanomaterials, such as clay-nanocomposites, metal oxide-based nanomaterials, carbon nanotubes, and various polymeric nanocomposites as adsorbents for removal of variety of heavy metals, such as As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Sn, U, V, and Zn, from water as reported during the last few years. This work tries to analyze the metal-nanomaterial interactions, the mechanism of adsorption, the adsorption capacities of the nanomaterials, and the kinetics of adsorption under various experimental conditions. The review brings forward the relation between the physicochemical properties of the nanomaterials and heavy metal adsorption on them.
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Affiliation(s)
- Gautam Kumar Sarma
- Department of Chemistry, Rajiv Gandhi University, Doimukh, Arunachal Pradesh, 791112, India.
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Lee G, Chu KH, Al-Hamadani YAJ, Park CM, Jang M, Heo J, Her N, Kim DH, Yoon Y. Fabrication of graphene-oxide/β-Bi 2O 3/TiO 2/Bi 2Ti 2O 7 heterojuncted nanocomposite and its sonocatalytic degradation for selected pharmaceuticals. CHEMOSPHERE 2018; 212:723-733. [PMID: 30179837 DOI: 10.1016/j.chemosphere.2018.08.137] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/22/2018] [Accepted: 08/27/2018] [Indexed: 06/08/2023]
Abstract
A graphene-oxide (GO)/β-Bi2O3/TiO2/Bi2Ti2O7 heterojuncted nanocomposite, designated as GBT, was synthesized via a two-step hydrothermal process. The sonocatalytic activity of the GBT was evaluated at several frequencies (28, 580, and 970 kHz) and compared with Bi-doped GO (GB) and Ti-doped GO (GT). Transmission electron microscopy images showed heterojuncted crystal structures of Bi and Ti on GO, and X-ray diffraction patterns verified that the crystal structures consisted of β-Bi2O3, TiO2, and Bi2Ti2O7 nanocomposites. Energy-dispersive X-ray spectroscopy revealed a higher proportion of metal on GBT surfaces compared with GB and GT surfaces. The energy band gaps of GT, GB, and GBT were 3.0, 2.8, and 2.5 eV, respectively. Two pharmaceuticals (PhACs; carbamazepine [CBZ] and acetaminophen [ACE]) were selected and treated under sonolytic conditions at frequencies of 28, 580, and 970 kHz at a power level of 180 W L-1. The selected pharmaceuticals, present at initial concentrations of 20 μM, were reduced by over 99% by ultrasonic irradiation in the presence of GBT. The 580 kHz treatment achieved the most rapid organic removal among the frequencies tested. The removal kinetic of CBZ was higher than that of ACE owing to its relatively high hydrophobicity. High sonocatalytic activity of GBT was observed through measurement of H2O2 in solution. Because of its low band gaps and high surface activity, GBT exhibited higher sonolytic activity in removing selected PhACs than GT or GB.
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Affiliation(s)
- Gooyong Lee
- Green Technology Center, NamsanSquare Bldg., 173, Toegye-ro, Jung-gu, Seoul, 04554, Republic of Korea
| | - Kyoung Hoon Chu
- School of Civil, Environmental and Architectural Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Yasir A J Al-Hamadani
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC, 29208, USA
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, 447-1Wolgye-Dong Nowon-Gu, Seoul, 01897, Republic of Korea
| | - Jiyong Heo
- Department of Civil and Environmental Engineering, Korea Army Academy at Young-cheon, 495 Hogook-ro, Kokyungmeon, Young-Cheon, Gyeongbuk, 38900, Republic of Korea
| | - Namguk Her
- Department of Civil and Environmental Engineering, Korea Army Academy at Young-cheon, 495 Hogook-ro, Kokyungmeon, Young-Cheon, Gyeongbuk, 38900, Republic of Korea
| | - Do-Hyung Kim
- Korea Environmental Industry & Technology Institute, 215 Jinheungno, Eunpyeong-gu, Seoul, Republic of Korea.
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC, 29208, USA.
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17
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Catalytic performance of ZnFe2O4 nanoparticles prepared from the [ZnFe2O(CH3COO)6(H2O)3]·2H2O complex under microwave irradiation. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3607-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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Zahed M, Parsamehr PS, Tofighy MA, Mohammadi T. Synthesis and functionalization of graphene oxide (GO) for salty water desalination as adsorbent. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.08.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Mirzazadeh H, Lashanizadegan M. Binary semiconductor oxide nanoparticles on graphene oxide (CdO/CeO2/RGO) for the treatment of hazardous organic water pollutants. KOREAN J CHEM ENG 2018. [DOI: 10.1007/s11814-017-0299-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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20
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Zhang N, Xian G, Li X, Zhang P, Zhang G, Zhu J. Iron Based Catalysts Used in Water Treatment Assisted by Ultrasound: A Mini Review. Front Chem 2018; 6:12. [PMID: 29473033 PMCID: PMC5810252 DOI: 10.3389/fchem.2018.00012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 01/15/2018] [Indexed: 11/13/2022] Open
Abstract
The characteristics and performances of catalyst are the key in catalytic ultrasonic treatment of wastewater, and iron based catalysts are known for low cost, high accessibility and safety. This paper reviewed the current research status of iron-based catalysts in water treatment assisted by ultrasound. Zero valent iron, Fe3O4 and iron composited with other metals were analyzed, their behaviors in catalytic sonochemistry were summarized, and the potential catalytic mechanisms were discussed in details. Finally, the future development in this field was proposed.
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Affiliation(s)
- Nan Zhang
- School of Construction and Environment Engineering, Shenzhen Polytechnic, Shenzhen, China.,School of Environment and Natural Resource, Renmin University of China, Beijing, China
| | - Guang Xian
- School of Environment and Natural Resource, Renmin University of China, Beijing, China
| | - Xuemei Li
- School of Environment and Natural Resource, Renmin University of China, Beijing, China
| | - Panyue Zhang
- School of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
| | - Guangming Zhang
- School of Environment and Natural Resource, Renmin University of China, Beijing, China
| | - Jia Zhu
- School of Construction and Environment Engineering, Shenzhen Polytechnic, Shenzhen, China
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21
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Ganguly S, Das P, Bose M, Das TK, Mondal S, Das AK, Das NC. Sonochemical green reduction to prepare Ag nanoparticles decorated graphene sheets for catalytic performance and antibacterial application. ULTRASONICS SONOCHEMISTRY 2017; 39:577-588. [PMID: 28732982 DOI: 10.1016/j.ultsonch.2017.05.005] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 05/04/2017] [Accepted: 05/05/2017] [Indexed: 05/24/2023]
Abstract
The emerging popularity and wide acceptance of green chemistry and environmentally benign/ecofriendly approaches have comprehensively considered for catalyst synthesis methods. Natural resource derived carbogenic quantum dots has been used in assistance with ultrasonic shock wave to graphene oxide (GO) aqueous dispersion in order to prepare reduced graphene oxide decorated with silver nanoparticles following the 'top-down' method. The total reduction process is done without using any toxic external reducing agents and any surfactants or stabilizers, thus it can be accepted as green method. Sonochemical destratification of the GO layers provides green attributes due to scalable, non-hazardous and relatively fast reduction to enhance surface area of the GO. Arresting the silver nanoparticles onto basal planes of graphene oxide can act as an efficient solid state support catalyst for fast reduction of toxic nitro aryls. Besides this work also reports bactericidal feature exhibited by the catalyst. Thus a dual functioning nanomaterial has been successfully developed which can be a suitable alternative for reductive forthcoming specialty/multifunctional membrane and other high-end medicinal or industrial applications.
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Affiliation(s)
- Sayan Ganguly
- Rubber Technology Centre, Indian Institute of Technology, Kharagpur, 721302, India
| | - Poushali Das
- School of Nanoscience and Technology, Indian Institute of Technology, Kharagpur, 721302, India
| | - Madhuparna Bose
- Department of Biotechnology, Indian Institute of Technology, Kharagpur, 721302, India
| | - Tushar Kanti Das
- Rubber Technology Centre, Indian Institute of Technology, Kharagpur, 721302, India
| | - Subhadip Mondal
- Rubber Technology Centre, Indian Institute of Technology, Kharagpur, 721302, India
| | - Amit Kumar Das
- Department of Biotechnology, Indian Institute of Technology, Kharagpur, 721302, India
| | - Narayan C Das
- Rubber Technology Centre, Indian Institute of Technology, Kharagpur, 721302, India; School of Nanoscience and Technology, Indian Institute of Technology, Kharagpur, 721302, India.
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22
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Modified natural zeolite using ammonium quaternary based material for Acid red 18 removal from aqueous solution. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 2017. [DOI: 10.1016/j.jece.2017.06.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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23
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Li G, Zhang H, Wei C, Huang Y, Dou X, Wang Y, Wang J, Song Y. Preparation of (5.0%)Er 3+:Y 3Al 5O 12/Pt-(TiO 2-Ta 2O 5) nanocatalysts and application in sonocatalytic decomposition of ametryn in aqueous solution. ULTRASONICS SONOCHEMISTRY 2017; 34:763-773. [PMID: 27773303 DOI: 10.1016/j.ultsonch.2016.07.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 07/13/2016] [Accepted: 07/14/2016] [Indexed: 06/06/2023]
Abstract
(5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) powder, as a high effective sonocatalyst, was prepared using sol-gel and calcination method. Then it was characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX). In order to evaluate the sonocatalytic activity of the prepared (5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) powder, the sonocatalytic decomposition of ametryn was studied. In addition, some influencing factors such as different Ti/Ta molar ratios on the sonocatalytic activity of the prepared (5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) powder, catalyst added amount with ultrasonic irradiation time and used times on the sonocatalytic decomposition efficiency were examined by using ion chromatogram determination. The experimental results showed that the best sonocatalytic decomposition ratio of ametryn were 77.50% based on the N atom calculation and 95.00% based on the S atom calculation, respectively, when the conditions of 10.00mg/L initial concentration, 1.00g/L prepared (5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) powder (Ti/Ta=1.00:0.25 heat-treated at 550°C for 3.0h) added amount, 150min ultrasonic irradiation (40kHz frequency and 300W output power), 100mL total volume and 25-28°C temperature were adopted. Therefore, the (5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) composite nanoparticles could be considered as an effective sonocatalyst for decomposition of ametryn in aqueous solution.
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Affiliation(s)
- Guanshu Li
- College of Environment, Liaoning University, Shenyang 110036, PR China
| | - Hongbo Zhang
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Chunsheng Wei
- College of Chemistry, Liaoning University, Shenyang 110036, PR China; National Police University of China, Shenyang 110854, PR China
| | - Yingying Huang
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Xuekai Dou
- College of Environment, Liaoning University, Shenyang 110036, PR China
| | - Yidi Wang
- College of Environment, Liaoning University, Shenyang 110036, PR China
| | - Jun Wang
- College of Environment, Liaoning University, Shenyang 110036, PR China; College of Chemistry, Liaoning University, Shenyang 110036, PR China.
| | - Youtao Song
- College of Environment, Liaoning University, Shenyang 110036, PR China.
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Gandhi MR, Vasudevan S, Shibayama A, Yamada M. Graphene and Graphene-Based Composites: A Rising Star in Water Purification - A Comprehensive Overview. ChemistrySelect 2016. [DOI: 10.1002/slct.201600693] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | | | - Atsushi Shibayama
- Department of Earth Resource Engineering and Environmental Science, Graduate School of International Resource Sciences; Akita University; 1-1 Tegatagakuen-machi Akita 010-8502 Japan
| | - Manabu Yamada
- Research Center for Engineering Science, Graduate School of Engineering Science; Akita University; 1-1 Tegatagakuen-machi Akita 010-8502 Japan
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25
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Rahimi S, Ayati B, Rezaee A. Kinetic modeling and determination role of sono/photo nanocatalyst-generated radical species on degradation of hydroquinone in aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:12185-12198. [PMID: 26971517 DOI: 10.1007/s11356-016-6408-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 03/02/2016] [Indexed: 06/05/2023]
Abstract
Experimental findings of sonophotocatalytic process were used in degradation of hydroquinone to assess kinetic modeling and determine the effect of various active radical species. First, the effects of three photocatalytic, sonocatalytic, and sonophotocatalytic processes were studied for hydroquinone removal to determine kinetic constants and calculate the activation energy of reactions, and then the selected process was evaluated to determine active radical species. The reactor was composed of two parts, one included ultrasonic probe (sonocatalytic part) with powers 22, 80, and 176 W and the second part was the location of UV lamp (photocatalytic part) with tubular flow and power 15 W. After three systems were examined and the efficient system was selected, the role of different active species such as hydroxyl radical (OH(·)), superoxide radical (O2 (·-)), hole (h(+)), electrons (e (-)), and single oxygen molecule ((1)O2) and contribution of each of them were determined in hydroquinone degradation. According to tests, the results of this study showed that sonophotocatalytic integrated method as selected system among three systems studied followed the first-order equation for hydroquinone degradation and active hydroxyl species with 45 % and electron and hole with 15 and 10 %, respectively, had the highest and lowest contributions to conversion of hydroquinone. The findings showed that dissolved oxygen increases the capability of active radical formation so that 28.2 % of hydroquinone removal was increased under aeration compared to without aeration. Also, removal efficiency decreased 62 % with N2 injection due to the withdrawal of oxygen from the sample. By adding 25 Mm of sodium azide (NaN3) to stock solution, 46.5 % reduction was developed because single oxygen ((1)O2) played the role of an active species. The advantages of integrated sonocatalytic and photocatalytic method are the generation of active radical species with more variety and ultimately the formation of higher amounts of powerful hydroxyl radical that increases degradation rates of refractory compounds and low-risk internal and final products. It has an appropriate performance in the degradation of refractory compounds by optimizing effective operational factors.
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Affiliation(s)
- Sajad Rahimi
- Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran
| | - Bita Ayati
- Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran.
| | - Abbas Rezaee
- Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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26
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Taufik A, Tju H, Saleh R. Comparison of Catalytic Activities for Sonocatalytic, Photocatalytic and Sonophotocatalytic Degradation of Methylene Blue in the Presence of Magnetic Fe3O4/CuO/ZnO Nanocomposites. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1742-6596/710/1/012004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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27
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Das L, Chatterjee S, Naik DB, Adhikari S. Role of surfactant derived intermediates in the efficacy and mechanism for radiation chemical degradation of a hydrophobic azo dye, 1-phenylazo-2-naphthol. JOURNAL OF HAZARDOUS MATERIALS 2015; 298:19-27. [PMID: 26001620 DOI: 10.1016/j.jhazmat.2015.04.084] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 04/10/2015] [Accepted: 04/28/2015] [Indexed: 06/04/2023]
Abstract
A combined methodology involving gamma and pulse radiolysis, product analysis and toxicity studies has been adopted to comprehend the degradation process of a model hydrophobic azo dye, 1-phenylazo-2-naphthol, emphasizing the role of the surfactant, which is an integral part of textile waste. Two new and important findings are underlined in this article. The first is the direct attestation of the hydrazyl radical-parent adduct, formed in the reaction of the dye with e(-)aq followed by protonation and subsequent addition to the unreacted dye molecule. This has been confirmed from concentration dependent studies. Secondly, we have clearly shown that in the reaction of hydroxyl radical with the dye in Triton X-100 media, the initially produced TX radicals cause reductive degradation of the dye. Identification and detailed analysis of HPLC and GCMS data reveals that similar products are formed in both the reactions of e(-)aq and OH radicals. Moreover, the cytotoxicity of 10(-4)moldm(-3) dye was found to be reduced significantly after irradiation. Thus, the present study not only depicts new pathways for the degradation of hydrophobic azo dye, but also demonstrates the role of a surfactant in the entire process.
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Affiliation(s)
- Laboni Das
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | | | - Devidas B Naik
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Soumyakanti Adhikari
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
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Gopalakrishnan A, Krishnan R, Thangavel S, Venugopal G, Kim SJ. Removal of heavy metal ions from pharma-effluents using graphene-oxide nanosorbents and study of their adsorption kinetics. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2015.06.005] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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