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Medellín-Castillo NA, González-Fernández LA, Ocampo-Pérez R, Leyva-Ramos R, Luiz-Dotto G, Flores-Ramírez R, Navarro-Frómeta AE, Aguilera-Flores MM, Carrasco-Marín F, Hernández-Mendoza H, Aguirre-Contreras S, Sánchez-Polo M, Ocaña-Peinado FM. Efficient removal of triclosan from water through activated carbon adsorption and photodegradation processes. ENVIRONMENTAL RESEARCH 2024; 246:118162. [PMID: 38218517 DOI: 10.1016/j.envres.2024.118162] [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: 11/15/2023] [Revised: 12/29/2023] [Accepted: 01/07/2024] [Indexed: 01/15/2024]
Abstract
This study investigated the application of adsorption with activated carbons (ACs) and photodegradation to reduce the concentration of triclosan (TCS) in aqueous solutions. Concerning adsorption, ACs (Darco, Norit, and F400) were characterised and batch experiments were performed to elucidate the effect of pH on equilibrium. The results showed that at pH = 7, the maximum adsorption capacity of TCS onto the ACs was 18.5 mg g-1 for Darco, 16.0 mg g-1 for Norit, and 15.5 mg g-1 for F400. The diffusional kinetic model allowed an adequate interpretation of the experimental data. The effective diffusivity varied and increased with the amount of TCS adsorbed, from 1.06 to 1.68 × 10-8 cm2 s-1. In the case of photodegradation, it was possible to ensure that the triclosan molecule was sensitive to UV light of 254 nm because the removal was over 80 % using UV light. The removal of TCS increased in the presence of sulfate radicals. It was possible to identify 2,4-dichlorophenol as one of the photolytic degradation products of triclosan, which does not represent an environmental hazard at low concentrations of triclosan in water. These results confirm that the use of AC Darco, Norit, and F400 and that photodegradation processes with UV light and persulfate radicals are effective in removing TCS from water, reaching concentration levels that do not constitute a risk to human health or environmental hazard. Both methods effectively eliminate pollutants with relatively easy techniques to implement.
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Affiliation(s)
- Nahum Andrés Medellín-Castillo
- Faculty of Engineering, Autonomous University of San Luis Potosi, Av. Dr. Manuel Nava No. 8, Zona Universitaria, 78290, San Luis Potosi, SLP, Mexico; Autonomous University of San Luis Potosi, Multidisciplinary Graduate Program in Environmental Sciences, Av. Dr. Manuel Nava 201, Zona Universitaria, 78210, San Luis Potosi, SLP, Mexico
| | - Lázaro Adrián González-Fernández
- Faculty of Engineering, Autonomous University of San Luis Potosi, Av. Dr. Manuel Nava No. 8, Zona Universitaria, 78290, San Luis Potosi, SLP, Mexico; Autonomous University of San Luis Potosi, Multidisciplinary Graduate Program in Environmental Sciences, Av. Dr. Manuel Nava 201, Zona Universitaria, 78210, San Luis Potosi, SLP, Mexico.
| | - Raúl Ocampo-Pérez
- Faculty of Chemical Sciences, Autonomous University of San Luis Potosi, Av. Dr. Manuel Nava No.6, Zona Universitaria, 78210, San Luis Potosi, SLP, Mexico
| | - Roberto Leyva-Ramos
- Faculty of Chemical Sciences, Autonomous University of San Luis Potosi, Av. Dr. Manuel Nava No.6, Zona Universitaria, 78210, San Luis Potosi, SLP, Mexico
| | - Guilherme Luiz-Dotto
- Universidade Federal de Santa Maria, Av. Roraima N° 1000, Cidade Universitária Bairro Camobi, Santa Maria, RS, CEP: 97105-900, Brazil
| | - Rogelio Flores-Ramírez
- Coordination for Innovation and Application of Science and Technology, Av. Sierra Leona #550, Lomas 2a, Sección, 78210, San Luis Potosi, SLP, Mexico
| | - Amado Enrique Navarro-Frómeta
- Technological University of Izucar de Matamoros, De Reforma 168, Campestre La Paz, 74420, Izucar de Matamoros, Puebla, Mexico
| | - Miguel Mauricio Aguilera-Flores
- Autonomous University of San Luis Potosi, Multidisciplinary Graduate Program in Environmental Sciences, Av. Dr. Manuel Nava 201, Zona Universitaria, 78210, San Luis Potosi, SLP, Mexico; National Polytechnic Institute, Blvd. Del Bote 202, Cerro Del Gato Ejido La Escondida, Ciudad Administrativa, 98160, Zacatecas, Mexico
| | | | - Héctor Hernández-Mendoza
- Desert Zones Research Institute, Altair No. 200, Col. Del Llano, 78377, San Luis Potosí, SLP, Mexico
| | - Samuel Aguirre-Contreras
- Faculty of Chemical Sciences, Autonomous University of San Luis Potosi, Av. Dr. Manuel Nava No.6, Zona Universitaria, 78210, San Luis Potosi, SLP, Mexico
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Wang X, Cheng S, Liu C, Zhang Y, Su M, Rong X, Zhu H, Yu M, Sheng W, Zhu B. Discovery of a highly selective and ultra-sensitive colorimetric fluorescent probe for malononitrile and its applications in living cells and zebrafish. NEW J CHEM 2022. [DOI: 10.1039/d1nj04815e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A selective and ultra-sensitive colorimetric fluorescent probe was discovered to detect malononitrile in living cells and zebrafish.
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Affiliation(s)
- Xin Wang
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Siyu Cheng
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Caiyun Liu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Yan Zhang
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Meijun Su
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Xiaodi Rong
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Hanchuang Zhu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Miaohui Yu
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
| | - Wenlong Sheng
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
| | - Baocun Zhu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
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Zhang Y, Yang DH, Qiao S, Han BH. Synergistic Catalysis of Ionic Liquid-Decorated Covalent Organic Frameworks with Polyoxometalates for CO 2 Cycloaddition Reaction under Mild Conditions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10330-10339. [PMID: 34461724 DOI: 10.1021/acs.langmuir.1c01426] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The cycloaddition of carbon dioxide (CO2) with epoxides to yield highly value-added cyclic carbonates is an effective way to chemically utilize and convert CO2. Here, a heterogeneous catalyst of imidazole ionic liquid-decorated covalent organic framework with polyoxometalates (POM@ImTD-COF) was constructed by the covalent modification of ionic liquids to COFs and the electrostatic interaction between POMs and ionic liquids. The obtained POM@ImTD-COF shows high catalytic activity for CO2 cycloaddition reaction under mild conditions (1 atm and 80 °C) in the presence of a co-catalyst, and the catalytic activity of POM@ImTD-COF has no obvious decrease during reusing five times. The excellent catalytic performance is mainly attributed to the synergistic effect of ionic liquids, POMs, and COFs. In the cycloaddition process, ionic liquids and the co-catalyst weaken the C-O bond of epoxides and promote the ring opening of epoxides. POMs as the Lewis acids facilitate the insertion of CO2 to form reaction intermediates. The multiple activation effect of ionic liquids and POMs together with the CO2 adsorption effect and well-dispersed active sites in COFs contribute to the remarkable catalytic performance.
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Affiliation(s)
- Yunrui Zhang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- College of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Dong-Hui Yang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Shanlin Qiao
- College of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Bao-Hang Han
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Science, Beijing 100049, China
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