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Duong TTH, Ding S, Sebek M, Lund H, Bartling S, Peppel T, Le TS, Steinfeldt N. Effect of Bi 2MoO 6 Morphology on Adsorption and Visible-Light-Driven Degradation of 2,4-Dichlorophenoxyacetic Acid. Molecules 2024; 29:3255. [PMID: 39064834 PMCID: PMC11278676 DOI: 10.3390/molecules29143255] [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: 05/08/2024] [Revised: 07/01/2024] [Accepted: 07/04/2024] [Indexed: 07/28/2024] Open
Abstract
The development of highly efficient and stable visible-light-driven photocatalysts for the removal of herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) from water is still a challenge. In this work, Bi2MoO6 (BMO) materials with different morphology were successfully prepared via a simple hydrothermal method by altering the solvent. The morphology of the BMO material is mainly influenced by the solvent used in the synthesis (H2O, ethanol, and ethylene glycol or their mixtures) and to a lesser extent by subsequent thermal annealing. BMO with aggregated spheres and nanoplate-like structures hydrothermally synthesized in ethylene glycol (EG) and subsequently calcined at 400 °C (BMO-400 (EG)) showed the highest adsorption capacity and photocatalytic activity compared to other synthesized morphologies. Complete degradation of 2,4-D on BMO upon irradiation with a blue light-emitting diode (LED, λmax = 467 nm) was reached within 150 min, resulting in 2,4-dichlorophenol (2,4-DCP) as the main degradation product. Holes (h+) and superoxide radicals (⋅O2-) are assumed to be the reactive species observed for the rapid conversion of 2,4-D to 2,4-DCP. The addition of H2O2 to the reaction mixture not only accelerates the degradation of 2,4-DCP but also significantly reduces the total organic carbon (TOC) content, indicating that hydroxyl radicals are crucial for the rapid mineralization of 2,4-D. Under optimal conditions, the TOC value was reduced by 84.5% within 180 min using BMO-400 (EG) and H2O2. The improved degradation performance of BMO-400 (EG) can be attributed to its particular morphology leading to lower charge transfer resistance, higher electron-hole separation, and larger specific surface area.
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Affiliation(s)
- Thi Thanh Hoa Duong
- Leibniz Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Street 29a, 18059 Rostock, Germany; (T.T.H.D.); (S.D.); (M.S.); (H.L.); (S.B.); (T.P.)
| | - Shuoping Ding
- Leibniz Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Street 29a, 18059 Rostock, Germany; (T.T.H.D.); (S.D.); (M.S.); (H.L.); (S.B.); (T.P.)
| | - Michael Sebek
- Leibniz Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Street 29a, 18059 Rostock, Germany; (T.T.H.D.); (S.D.); (M.S.); (H.L.); (S.B.); (T.P.)
| | - Henrik Lund
- Leibniz Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Street 29a, 18059 Rostock, Germany; (T.T.H.D.); (S.D.); (M.S.); (H.L.); (S.B.); (T.P.)
| | - Stephan Bartling
- Leibniz Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Street 29a, 18059 Rostock, Germany; (T.T.H.D.); (S.D.); (M.S.); (H.L.); (S.B.); (T.P.)
| | - Tim Peppel
- Leibniz Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Street 29a, 18059 Rostock, Germany; (T.T.H.D.); (S.D.); (M.S.); (H.L.); (S.B.); (T.P.)
| | - Thanh Son Le
- Faculty of Chemistry, VNU University of Science, Hanoi 100000, Vietnam;
| | - Norbert Steinfeldt
- Leibniz Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Street 29a, 18059 Rostock, Germany; (T.T.H.D.); (S.D.); (M.S.); (H.L.); (S.B.); (T.P.)
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Kurmysheva AY, Yanushevich O, Krikheli N, Kramar O, Vedenyapina MD, Podrabinnik P, Solís Pinargote NW, Smirnov A, Kuznetsova E, Malyavin VV, Peretyagin P, Grigoriev SN. Adsorption Ability of Graphene Aerogel and Reduced Graphene Aerogel toward 2,4-D Herbicide and Salicylic Acid. Gels 2023; 9:680. [PMID: 37754362 PMCID: PMC10529785 DOI: 10.3390/gels9090680] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/19/2023] [Accepted: 08/22/2023] [Indexed: 09/28/2023] Open
Abstract
Within this work, new aerogels based on graphene oxide are proposed to adsorb salicylic acid (SA) and herbicide 2,4-Dichlorophenoxyacetic acid (2,4-D) from aqueous media. Graphene oxide aerogel (GOA) and reduced graphene oxide aerogel (rGOA) were obtained by freeze-drying processes and then studied by Raman spectroscopy, Fourier-transform infrared spectroscopy (FT-IR), and Brunauer-Emmett-Teller (BET) analysis. The influence of contact time and the concentration of the adsorbates were also assessed. It was found that equilibrium for high adsorption is reached in 150 min. In a single system, the pseudo-first-order, pseudo-second-order kinetic models, Intraparticle diffusion, and Elovich models were used to discuss the detail of the aerogel adsorbing pollutant. Moreover, the Langmuir, Freundlich, and Temkin adsorption models were applied to describe the equilibrium isotherms and calculate the isotherm constants.
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Affiliation(s)
- Alexandra Yu. Kurmysheva
- Laboratory of Electric Current Assisted Sintering Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia; (P.P.); (N.W.S.P.); (A.S.); (E.K.); (P.P.); (S.N.G.)
| | - Oleg Yanushevich
- Scientific Department, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Delegatskaya St., 20, p. 1, 127473 Moscow, Russia; (O.Y.); (N.K.); (O.K.)
| | - Natella Krikheli
- Scientific Department, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Delegatskaya St., 20, p. 1, 127473 Moscow, Russia; (O.Y.); (N.K.); (O.K.)
| | - Olga Kramar
- Scientific Department, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Delegatskaya St., 20, p. 1, 127473 Moscow, Russia; (O.Y.); (N.K.); (O.K.)
| | - Marina D. Vedenyapina
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia;
| | - Pavel Podrabinnik
- Laboratory of Electric Current Assisted Sintering Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia; (P.P.); (N.W.S.P.); (A.S.); (E.K.); (P.P.); (S.N.G.)
| | - Nestor Washington Solís Pinargote
- Laboratory of Electric Current Assisted Sintering Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia; (P.P.); (N.W.S.P.); (A.S.); (E.K.); (P.P.); (S.N.G.)
| | - Anton Smirnov
- Laboratory of Electric Current Assisted Sintering Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia; (P.P.); (N.W.S.P.); (A.S.); (E.K.); (P.P.); (S.N.G.)
| | - Ekaterina Kuznetsova
- Laboratory of Electric Current Assisted Sintering Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia; (P.P.); (N.W.S.P.); (A.S.); (E.K.); (P.P.); (S.N.G.)
| | - Vladislav V. Malyavin
- Laboratory of Petroleum Chemistry and Petrochemical Synthesis, Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, 119991 Moscow, Russia;
| | - Pavel Peretyagin
- Laboratory of Electric Current Assisted Sintering Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia; (P.P.); (N.W.S.P.); (A.S.); (E.K.); (P.P.); (S.N.G.)
- Scientific Department, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Delegatskaya St., 20, p. 1, 127473 Moscow, Russia; (O.Y.); (N.K.); (O.K.)
| | - Sergey N. Grigoriev
- Laboratory of Electric Current Assisted Sintering Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia; (P.P.); (N.W.S.P.); (A.S.); (E.K.); (P.P.); (S.N.G.)
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Beig SUR, Shah SA. Adsorption of Cr(VI) by NaOH-modified microporous activated carbons derived from the wastes of Amaranthus retroflexus, Magnolia soulangeana, and Tanacetum Vulgar L.: mechanism, isotherms, and kinetic studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:35808-35837. [PMID: 36538220 DOI: 10.1007/s11356-022-24616-y] [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: 07/26/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
The study was designed to synthesize microporous activated carbons from the wastes of three medicinal herbs by NaOH as an activator followed by pyrolysis. The prepared microporous activated carbons R. Weed (Amaranthus retroflexus Redroot pigweed modified with NaOH), S. Bod Magnolia soulangeana Soul-Bod treated with NaOH) and S. TY (Tanacetum Vulgar L. (Tansy) treated with NaOH) were deployed for dangerous Cr(VI) ion remediation from the aquatic system. The synthesized modified biosorbents were described by FT-IR, SEM, EDAX, and BET. Furthermore, it was found that biosorbent made from R. Weed seems to have a surface area of 588.155 m2/g and micropore volume of 0.331Cm3/g whereas biosorbent made from S. Bod and S. TY does have a surface area of 489.613 and 445.615 m2/g respectively. The effects of several variables such as pH, temperature, and contact time were explored. The kinetic studies were accomplished and it was noticed that equilibrium was confirmed at 6 min for R. Weed while at 8 and 10 min for S. Bod and S. TY respectively. The pertinence of different adsorption isotherms like Langmuir, Freundlich, and Temkin was explored. The optimum adsorption capacity for each adsorbent material in respect of monolayer coverage (Qmax) was calculated. The Qmax of Redroot pigweed (R. Weed), Soul-Bod (S. Bod), and Tansy (S. TY) biosorbents were 326.62, 181.69, and 108.14 mg/g respectively. The adsorption kinetics was described using pseudo-first-order and pseudo-second-order equations. Furthermore, it was found that each adsorbent material followed the pseudo-second-order kinetics which affirmed the chemosorption nature of adsorption. The thermodynamic variables that include ΔG, ΔH, and ΔS were determined for each adsorbent material. Moreover, the manufactured R. Weed biosorbent seems to have high recyclability. It will remediate Cr(VI) ions with a maximum remediation efficiency of up to 81% during six cycles of regeneration.
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Affiliation(s)
- Sajad Ur Rehman Beig
- Department of Chemistry, National Institute of Technology, Srinagar Hazratbal, Srinagar, J&K, 190006, India.
| | - Shakeel A Shah
- Department of Chemistry, National Institute of Technology, Srinagar Hazratbal, Srinagar, J&K, 190006, India
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Bose S, Senthil Kumar P, Rangasamy G, Prasannamedha G, Kanmani S. A review on the applicability of adsorption techniques for remediation of recalcitrant pesticides. CHEMOSPHERE 2023; 313:137481. [PMID: 36529165 DOI: 10.1016/j.chemosphere.2022.137481] [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: 09/15/2022] [Revised: 11/22/2022] [Accepted: 12/03/2022] [Indexed: 06/17/2023]
Abstract
Pesticide has revolutionised the agricultural industry by reducing yield losses and by enhancing productivity. But indiscriminate usage of such chemicals can negatively impact human health and ecosystem balance as certain pesticides can be recalcitrant in nature. Out of some of the suggested sustainable techniques to remove the pesticide load from the environment, adsorption is found to be highly efficient and can also be implemented on a large scale. It has been observed that natural adsorption that takes place after the application of the pesticide is not enough to reduce the pesticide load, hence, adsorbents like activated carbon, plant-based adsorbents, agricultural by-products, silica materials, polymeric adsorbents, metal organic framework etc are being experimented upon. It is becoming increasingly important to choose adsorbents which will not leave any secondary pollutant after treatment and the cost of production of such adsorbent should be feasible. In this review paper, it has been established that certain adsorbent like biochar, hydrochar, resin, metal organic framework etc can efficiently remove pesticides namely chlorpyrifos, diazinon, 2,4-Dichlorophenoxyacetic Acid, atrazine, fipronil, imidacloprid etc. The mechanism of adsorption, thermodynamics and kinetic part have been discussed in detail with respect to the pesticide and adsorbent under discussion. The reason behind choosing an adsorbent for the removal of a particular pesticide have also been explained. It is further highly recommended to carry out a cost analysis before implementing an absorbent because inspite of its efficacy, it might not be cost effective to use it for a particular type of pesticide or contaminant.
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Affiliation(s)
- Sanchali Bose
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India.
| | - Gayathri Rangasamy
- Department of Sustainable Engineering, Institute of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - G Prasannamedha
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India
| | - S Kanmani
- Centre for Environmental Studies, Department of Civil Engineering, Anna University, Chennai, 600025, India
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Salcedo MF, Mansilla AY, Colman SL, Iglesias MJ, Alvarez VA, Casalongué CA. Efficacy of an organically modified bentonite to adsorb 2,4-dichlorophenoxyacetic acid (2,4-D) and prevent its phytotoxicity. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 297:113427. [PMID: 34346399 DOI: 10.1016/j.jenvman.2021.113427] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/25/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
The herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) is widely used due to it selective action, and preferential control of dicotyledonous weeds affecting cereal crops. Physiological responses of sensitive dicotyledonous plants to 2,4-D include growth retardation, senescence, and cell death. Due to soil and water contamination by agricultural practices, 2,4-D constitutes a potential risk to non-target plant species. In this work, the potential advantage of using organic modified bentonite (Bent) to adsorb 2,4-D and therefore mitigate damage produced by this herbicide on sensitive not-target vegetable species was investigated. Dodecylamine (DDA) was used as an organic modifier to change the hydrophilic nature of Bent into an organophilic matrix. The adsorption performances of 2,4-D by Bent-DDA were analyzed. The maximum adsorptions of 2,4-D (22.1 mg/L) from aqueous solution containing 1.0 or 2.5 mg/mL Bent-DDA were 40 and 80 %, respectively. The physical interaction of Bent-DDA with 2,4-D was characterized by Wide Angle X-ray Scattering (WAXS) and thermogravimetric analysis (TGA). The biological functionality of Bent-DDA matrix as 2,4-D adsorbent was tested in a bioassay in the Arabidopsis thaliana plant model system. The primary root growth of Arabidopsis seedlings is strongly inhibited by low concentrations of 2,4-D. Arabidopsis seedlings submitted to Bent-DDA pre-treated herbicide aqueous solution showed similar root growth than 2,4-D non-treated seedlings. Finally, the ability of Bent-DDA to prevent 2,4-D phytotoxicity was exploratory investigated in lettuce plants. Lettuce plants pre-treated with 20 μg/mL Bent-DDA showed reduced sensitivity to 2,4-D including an increment on chlorophyll content and biomass compared with non-treated plants. Our findings revealed a promising scenario for the application of Bent-DDA as an effective adsorbent of 2,4-D at productive scale.
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Affiliation(s)
- M F Salcedo
- Instituto de Investigaciones Biológicas (IIB). UE CONICET-UNMDP, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata (UNMDP) y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Deán Funes, 3250, (7600), Mar del Plata, Argentina
| | - A Y Mansilla
- Instituto de Investigaciones Biológicas (IIB). UE CONICET-UNMDP, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata (UNMDP) y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Deán Funes, 3250, (7600), Mar del Plata, Argentina.
| | - S L Colman
- Instituto de Investigaciones Biológicas (IIB). UE CONICET-UNMDP, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata (UNMDP) y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Deán Funes, 3250, (7600), Mar del Plata, Argentina
| | - M J Iglesias
- Instituto de Investigaciones Biológicas (IIB). UE CONICET-UNMDP, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata (UNMDP) y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Deán Funes, 3250, (7600), Mar del Plata, Argentina; Laboratorio de Fisiología y Biología Molecular, Departamento de Fisiología, Biología Molecular y Celular, IFIBYNE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
| | - V A Alvarez
- Grupo de Materiales Compuestos Termoplásticos (CoMP), Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA). UE CONICET-UNMDP, Facultad de Ingeniería, Universidad Nacional de Mar del Plata (UNMDP) y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Colón, 10850, (7600), Mar del Plata, Argentina
| | - C A Casalongué
- Instituto de Investigaciones Biológicas (IIB). UE CONICET-UNMDP, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata (UNMDP) y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Deán Funes, 3250, (7600), Mar del Plata, Argentina
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Kodali J, Arunraj B, Sathvika T, Krishna Kumar AS, Nagarathnam R. Prospective application of diethylaminoethyl cellulose (DEAE-cellulose) with a high adsorption capacity toward the detoxification of 2,4-dichlorophenoxyacetic acid (2,4-D) from water. RSC Adv 2021; 11:22640-22651. [PMID: 35480475 PMCID: PMC9034331 DOI: 10.1039/d1ra03037j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/15/2021] [Indexed: 11/21/2022] Open
Abstract
Detoxification of pesticide residues requires effective methods. In this regard, the adsorption efficiency of diethylaminoethyl cellulose (DEAE-cellulose) as an adsorbent material for the removal of 2,4-dichlorophenoxyacetic acid (2,4-D) from water at different concentrations, times, pH and temperature was evaluated comprehensively. The obtained results showed that DEAE-cellulose has greater efficacy to eliminate 2,4-D from water with a high Langmuir maximum adsorption capacity of 429.18 mg g-1 at pH 7.0. Kinetic models and thermodynamics were investigated at length. The adsorption mechanism was understood by way of electrostatic, hydrogen bonding, and Lewis acid-base type interactions. Extensive analytical characterization of the DEAE-cellulose adsorbent before and after 2,4-D adsorption was performed and liquid chromatography with a tandem mass spectrometer (LC-MS/MS) was used for the quantification of 2,4-D. The regeneration of DEAE-cellulose was achievable using dilute formic acid and the DEAE-cellulose adsorbent showed high ability in the removal of 2,4-D from the agriculture run-off water.
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Affiliation(s)
- Jagadeesh Kodali
- Department of Chemistry, Birla Institute of Technology and Science, Pilani-Hyderabad Campus Jawahar Nagar, Shameerpet Mandal Hyderabad 500 078 India +91 40 66303998 +91 40 66303503
| | - Balasubramanian Arunraj
- Department of Chemistry, Birla Institute of Technology and Science, Pilani-Hyderabad Campus Jawahar Nagar, Shameerpet Mandal Hyderabad 500 078 India +91 40 66303998 +91 40 66303503
| | - T Sathvika
- Department of Chemistry, Birla Institute of Technology and Science, Pilani-Hyderabad Campus Jawahar Nagar, Shameerpet Mandal Hyderabad 500 078 India +91 40 66303998 +91 40 66303503
| | - A Santhana Krishna Kumar
- Department of Chemistry, National Sun Yat-sen University No. 70, Lien-hai Road, Gushan District Kaohsiung 80424 Taiwan
| | - Rajesh Nagarathnam
- Department of Chemistry, Birla Institute of Technology and Science, Pilani-Hyderabad Campus Jawahar Nagar, Shameerpet Mandal Hyderabad 500 078 India +91 40 66303998 +91 40 66303503
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Amiri F, Dehghani M, Amiri Z, Yousefinejad S, Azhdarpoor A. Photocatalytic degradation of 2,4-dichlorophenoxyacetic acid from aqueous solutions by Ag 3PO 4/TiO 2 nanoparticles under visible light: kinetic and thermodynamic studies. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 83:3110-3122. [PMID: 34185703 DOI: 10.2166/wst.2021.193] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Between the countless chemical substances applied in agriculture, 2,4-dichlorophenoxyacetic acid (2,4-D) herbicide is considered as a toxic and carcinogenic pollutant which is difficult to remove from water due to its biological and chemical stability and high solubility. The goal of this study was photocatalytic degradation of 2,4-D, using Ag3PO4/TiO2 nanoparticles under visible light. The Ag3PO4/TiO2 nanoparticles were characterized using XRD, FESEM and EDS analysis to investigate its crystal structure and elemental compounds. The effect of operating parameters such as pH, contact time, catalyst dose, and initial concentration of herbicide on the efficiency of the process was studied. Increasing the pH and initial concentration of herbicide led to the reduction of the efficiency of removing the herbicide, while increasing contact time and catalyst dose increased the efficiency. The best result (98.4% removal efficiency) was achieved at pH = 3, 1 g/L catalyst dose, 60 min contact time, and 10 mg/L initial concentration of 2,4-D. According to the results, 2,4-D removal efficiency with Ag3PO4/TiO2 photocatalyst reached 96.1% from 98.4% after 5 cycles of reaction. The pseudo-first-order kinetics was the best fit for the 2,4-D degradation by Ag3PO4/TiO2 with correlation coefficients (R2 = 0.9945). The results demonstrated that the photocatalytic process using Ag3PO4/TiO2 nanoparticles in the presence of visible light had a relatively good efficiency in removing 2,4-D. Moreover, Ag3PO4/TiO2 can be used as a reusable photocatalyst for the degradation of such toxins from polluted water and wastewater.
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Affiliation(s)
- Fatemeh Amiri
- Department of Environmental Health Engineering, School of Health, Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mansooreh Dehghani
- Research Center for Health Sciences, Department of Environmental Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran E-mail:
| | - Zeinab Amiri
- Department of Chemistry, School of Chemistry, Shiraz University, Shiraz, Iran
| | - Saeed Yousefinejad
- Research Center for Health Sciences, Department of Occupational Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Aboolfazl Azhdarpoor
- Department of Environmental Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
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Aswani MT, Kumar MVP. Acid‐Thermally Modified
Merremia vitifolia
for the Removal of 2,4‐Dichlorophenoxyacetic Acid. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202000524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Mansab S, Rafique U. In situ remediation of 2,4-dicholrophenoxyacetic acid herbicide using amine-functionalized imidazole coordination complexes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:15099-15113. [PMID: 33230788 DOI: 10.1007/s11356-020-11741-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 11/17/2020] [Indexed: 06/11/2023]
Abstract
Demand of clean water is always a major concern due to continuous use of toxic pesticides and herbicides to overcome food scarcity. In Asian countries, wide use of ionizable 2,4-D herbicide has worsen problem due to its less binding ability with soil and can easily contaminate drinking water that causes potential risks to humans and environment. The present research focused on synthesis of amino-factionalized coordination complexes using imidazole-based amino benzoic acid ligands for remediation of acidic 2,4-D herbicide. Coordination complexes characterized with FTIR, 1H-NMR, elemental analysis, thermogravimetric analysis, powder XRD, and BET revealed successful incorporation of functionalized groups with high thermal stability and surface area that make them suitable for adsorption experiments. Batch adsorption experiments conducted at different temperature conditions depicted the spontaneous physisorption process (- ∆G) having endothermic nature (∆H, ∆S). The removal efficiency of the amino-functionalized coordination complex is found to be higher (73%) compared to non-functionalized (35%) and acetic anhydride-functionalized coordination complex (42%). Kinetic studies supported pseudo 2nd-order kinetics with three phases of adsorption depicted by intra-particle diffusion model. Amino-functionalized complexes favored Langmuir isotherm while Freundlich isotherm is best fitted for non-functionalized complexes. The synthesized adsorbents were also proven to be effective for removal of herbicide from irrigated wastewater with average percent removal of 56% for amino functionalized, acetic anhydride functionalized (23%), and non-functionalized (20%).
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Affiliation(s)
- Saira Mansab
- Department of Environmental Sciences, Fatima Jinnah Women University, The Mall, Rawalpindi, Pakistan.
| | - Uzaira Rafique
- Department of Environmental Sciences, Fatima Jinnah Women University, The Mall, Rawalpindi, Pakistan
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Ejeta SY, Imae T. Photodegradation of pollutant pesticide by oxidized graphitic carbon nitride catalysts. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112955] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Hu Y, Muhammad T, Wu B, Wei A, Yang X, Chen L. A simple on-line detection system based on fiber-optic sensing for the realtime monitoring of fixed bed adsorption processes of molecularly imprinted polymers. J Chromatogr A 2020; 1622:461112. [PMID: 32386708 DOI: 10.1016/j.chroma.2020.461112] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 04/01/2020] [Accepted: 04/03/2020] [Indexed: 02/07/2023]
Abstract
Fixed bed adsorption is widely used for separations and purifications of active components in medicine, and for wastewater treatment. At present, fixed bed adsorption breakthrough curve is generally obtained by manual sampling and off-line detection. In this study, we proposed a method for on-line monitoring of fixed bed adsorption process using a self-assembled fiber-optic sensing (FOS) system. The adsorption of 2,4-dichlorophenoxyacetic acid (2,4-D) on the fixed bed packed with molecularly imprinted polymers (MIPs) and non-imprinted polymers (NIPs) were studied. The reproducibility and precision of the system was investigated. The relative standard deviation (RSD) of the system was less than 1.54%, which indicates that the system has a good reproducibility. The effects of initial concentration, flow rate, adsorbent mass and particle size on the breakthrough curves were investigated. Through screening, it was found that adsorption kinetics of the polymer materials fit to Thomas and Yoon-Nelson models. The MIPs showed high binding capacity, good selectivity, fast adsorption rate, indicating a great potential for the treatment of 2,4-D contaminated water. Moreover, this study has identified that the detection method has the advantages of being on-line, realtime, simple, and accurate. The on-line method can facilitate the study of fixed bed adsorption processes and accelerate the understanding of adsorption kinetics.
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Affiliation(s)
- Yiting Hu
- College of Chemistry & Chemical Engineering, Xinjiang University, Xinjiang Key laboratory of Oil and Gas Fine Chemicals, Urumqi 830046, PR China
| | - Turghun Muhammad
- College of Chemistry & Chemical Engineering, Xinjiang University, Xinjiang Key laboratory of Oil and Gas Fine Chemicals, Urumqi 830046, PR China.
| | - Beibei Wu
- College of Chemistry & Chemical Engineering, Xinjiang University, Xinjiang Key laboratory of Oil and Gas Fine Chemicals, Urumqi 830046, PR China
| | - Aixia Wei
- College of Chemistry & Chemical Engineering, Xinjiang University, Xinjiang Key laboratory of Oil and Gas Fine Chemicals, Urumqi 830046, PR China
| | - Xiaoxia Yang
- College of Chemistry & Chemical Engineering, Xinjiang University, Xinjiang Key laboratory of Oil and Gas Fine Chemicals, Urumqi 830046, PR China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environment Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, PR China; School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, PR China
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12
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Wu G, Ma J, Li S, Wang S, Jiang B, Luo S, Li J, Wang X, Guan Y, Chen L. Cationic metal-organic frameworks as an efficient adsorbent for the removal of 2,4-dichlorophenoxyacetic acid from aqueous solutions. ENVIRONMENTAL RESEARCH 2020; 186:109542. [PMID: 32353788 DOI: 10.1016/j.envres.2020.109542] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 04/07/2020] [Accepted: 04/15/2020] [Indexed: 05/19/2023]
Abstract
Metal-organic frameworks (MOFs) material with high surface area, good chemical stability and multi-functionality, has become an emerging adsorbent for water treatment. A novel kind of quaternary amine anionic-exchange MOFs UiO-66 namely UiO-66-NMe3+ was firstly synthesized for adsorptive removal of a widely used toxic herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) from aqueous solutions. The well-prepared UiO-66-NMe3+ MOFs were fully characterized, and then the main parameters affecting the adsorption process including solution pH, adsorbent dosage and coexisting anions were systematically investigated. The maximum adsorption capacity of UiO-66-NMe3+ toward 2,4-D reached as high as 279 mg g-1, much higher than that of pristine UiO-66 and aminated UiO-66. The adsorption mechanism could be attributed to the electrostatic interactions efficiently enhanced by the functionalization of quaternary amine groups, combining with the π-π conjugations between the linkers in MOFs and 2,4-D molecules, leading to the better adsorption performance of UiO-66-NMe3+. Additionally, the UiO-66-NMe3+ could be well regenerated by simple solvent washing and exhibited a slight decline of adsorption capacity after seven successive recycle. Furthermore, satisfactory adsorption capacity and reusability of the MOFs in environmental water samples were attained. Comparing with reported activated carbon and resin materials, the UiO-66-NMe3+ MOFs possessed higher adsorption capacity and shorter equilibrium time, as well as good reusability and practicality. The developed ion-exchange functionalized MOFs provided an ideal alternative for efficient adsorptive-removal of 2,4-D from complicated aqueous environment.
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Affiliation(s)
- Gege Wu
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, China
| | - Jiping Ma
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, China.
| | - Shuang Li
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, China
| | - Shasha Wang
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, China
| | - Bo Jiang
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, China
| | - Siyi Luo
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, China
| | - Jinhua Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; Shandong Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
| | - Xiaoyan Wang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; School of Pharmacy, Binzhou Medical University, Yantai, 264003, China
| | - Yafeng Guan
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; School of Pharmacy, Binzhou Medical University, Yantai, 264003, China; Shandong Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China.
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13
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Meftaul I, Venkateswarlu K, Dharmarajan R, Annamalai P, Megharaj M. Movement and Fate of 2,4-D in Urban Soils: A Potential Environmental Health Concern. ACS OMEGA 2020; 5:13287-13295. [PMID: 32548515 PMCID: PMC7288697 DOI: 10.1021/acsomega.0c01330] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 05/12/2020] [Indexed: 05/13/2023]
Abstract
The fate and movement of 2,4-dichlorophenoxyacetic acid (2,4-D), in terms of sorption-desorption and leaching potential, were evaluated in urban soils following the batch experimental method. The sorption kinetics of 2,4-D in soils followed both "fast" and "slow" sorption processes that could be well described by a pseudo-second-order kinetics model, suggesting that 2,4-D was partitioned into soil organic matter and clay surfaces, and eventually diffused into soil micropores. The sorption isotherms were linear, following both Langmuir and Freundlich models. Partially decomposed or undecomposed organic matter present in urban soils decreased sorption and increased desorption of 2,4-D. Also, sorption of 2,4-D increased with an increase in the contents of clay and Al and Fe oxides, whereas sand and alkaline pH increased the desorption process. The lower calculated K d values suggest that 2,4-D is highly mobile in urban soils than in agricultural soils. The calculated values of groundwater ubiquity score, leachability index, and hysteresis index indicated that the herbicide is highly prone to leach out from surface soil to groundwater which might affect the quality of potable water. The present study clearly suggests that 2,4-D must be judiciously applied in the urban areas in order to minimize the potential health and environmental risks.
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Affiliation(s)
- Islam
Md Meftaul
- Global
Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, New South Wales 2308, Australia
- Department
of Agricultural Chemistry, Sher-e-Bangla
Agricultural University, Dhaka 1207, Bangladesh
| | - Kadiyala Venkateswarlu
- Formerly
Department of Microbiology, Sri Krishnadevaraya
University, Anantapuramu 515003, India
| | - Rajarathnam Dharmarajan
- Global
Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Prasath Annamalai
- Global
Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Mallavarapu Megharaj
- Global
Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, New South Wales 2308, Australia
- Cooperative
Research Centre for Contamination Assessment and Remediation of the
Environment (CRC CARE), The University of
Newcastle, Callaghan, New South Wales 2308, Australia
- . Phone: +61 411126857
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14
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Toprakçı İ, Pekel AG, Kurtulbaş E, Şahin S. Special designed menthol-based deep eutectic liquid for the removal of herbicide 2,4-dichlorophenoxyacetic acid through reactive liquid–liquid extraction. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01218-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Amiri MJ, Roohi R, Arshadi M, Abbaspourrad A. 2,4-D adsorption from agricultural subsurface drainage by canola stalk-derived activated carbon: insight into the adsorption kinetics models under batch and column conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:16983-16997. [PMID: 32146664 DOI: 10.1007/s11356-020-08211-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 02/24/2020] [Indexed: 06/10/2023]
Abstract
In this study, the experimental and kinetic modeling investigations were performed to evaluate the ability of mesoporous and microporous canola stalk-derived activated carbon (CSAC) on 2,4-dichlorophenoxyacetic acid (2,4-D) removal from synthetic and natural water in both batch and continuous systems. Three empirical models (pseudo-first-order equation (PFOE), pseudo-second-order equation (PSOE), and the Elovich equation (EE)) and three theoretical models (film diffusion model (FDM), particle diffusion model (PDM), and second-order chemical reaction rate model (SOCRRM)) were compared in terms of diffusion coefficients, maximum 2,4-D adsorption, and rate constants at various operating conditions. CSAC was prepared at 600 °C and activated with water steam under a controlled flow and subsequently characterized by various analytical methods. The results showed that the maximum 2,4-D uptake by CSAC was achieved as 135.8 mg g-1 under a pH of 2 and an initial 2,4-D concentration of 150 mg L-1. The CSAC removed 38.3% of Na+, 43.49% of K+, 8.96% of Mg2+, 45.14% of Ca2+, 17.2% of Cl-1, 39.48% of HCO3-, 63.74% of SO42-, and 100% of the herbicide from agricultural subsurface drainage water and also retained its usability after regenerated by acetone for five cycles. It was concluded that the 2,4-D was adsorbed on the surface of the CSAC through its aromatic ring interaction with the reactive functional groups of the adsorbent. The model result indicated that the PDM is the best-fitting kinetic model for the adsorption of 2,4-D by CSAC, followed by FDM, SOCRRM, PSOE, PFOE, and EE. The mass balance equation based on PDM describes the dynamic behavior of the column satisfactorily. Graphical abstract.
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Affiliation(s)
- Mohammad Javad Amiri
- Department of Water Engineering, Faculty of Agriculture, Fasa University, Fasa, 74616-86131, Iran.
| | - Reza Roohi
- Department of Mechanical Engineering, Faculty of Engineering, Fasa University, Fasa, 74616-86131, Iran
| | - Mohammad Arshadi
- Department of Food Science, College of Agricultural and Life Science, Cornell University, 243 Stocking Hall, Ithaca, NY, 14853, USA
| | - Alireza Abbaspourrad
- Department of Food Science, College of Agricultural and Life Science, Cornell University, 243 Stocking Hall, Ithaca, NY, 14853, USA
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16
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Process Parameters Optimization of Gallic Acid Removal from Water by MIEX Resin Based on Response Surface Methodology. Processes (Basel) 2020. [DOI: 10.3390/pr8030273] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
In this work, the response surface methodology was used to optimize the process parameters of gallic acid adsorption on magnetic ion exchange (MIEX) resin. Based on Box-Behnken Design, a quadratic polynomial model equation including solution pH, gallic acid concentration, MIEX resin dosage and adsorption time was established. The reliability of the established regression equation was tested by variance analysis. Based on the regression equation, the technical parameters for gallic acid adsorption on MIEX resin were optimized and the effects of interaction between variables on the removal of gallic acid were analyzed. The results showed that the established regression equation was reliable and could effectively predict the removal of gallic acid. The optimal technical parameters were determined to be a pH of 9.17, a gallic acid concentration of 8.07 mg/L, a resin dosage of 0.98 mL/L and an adsorption time of 46.43 min. The removal efficiency of gallic acid was 97.93% under the optimal parameters. The interaction between pH and adsorption time had the most significant effect on the removal of gallic acid. The results of this study demonstrated that MIEX resin can remove gallic acid efficiently and relatively quickly under the condition of optimal technical parameters.
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17
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Urbano BF, Bustamante S, Palacio DA, Vera M, Rivas BL. Polymer supports for the removal and degradation of hazardous organic pollutants: an overview. POLYM INT 2020. [DOI: 10.1002/pi.5961] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Bruno F Urbano
- Departamento de Polímeros, Facultad de Ciencias QuímicasUniversidad de Concepción Concepción Chile
| | - Saúl Bustamante
- Departamento de Polímeros, Facultad de Ciencias QuímicasUniversidad de Concepción Concepción Chile
| | - Daniel A Palacio
- Departamento de Polímeros, Facultad de Ciencias QuímicasUniversidad de Concepción Concepción Chile
| | - Myleidi Vera
- Departamento de Polímeros, Facultad de Ciencias QuímicasUniversidad de Concepción Concepción Chile
| | - Bernabé L Rivas
- Departamento de Polímeros, Facultad de Ciencias QuímicasUniversidad de Concepción Concepción Chile
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18
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Agú UA, Mendieta SN, Gerbaldo MV, Crivello ME, Casuscelli SG. Highly Active Heterogeneous Fenton-like System Based on Cobalt Ferrite. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04042] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ulises A. Agú
- Centro de Investigación y Tecnología Química, UTN-CONICET, Facultad Regional Córdoba, Maestro López esq. Cruz Roja Argentina, S/N, X5016ZAA, Córdoba, Argentina
| | - Silvia N. Mendieta
- Centro de Investigación y Tecnología Química, UTN-CONICET, Facultad Regional Córdoba, Maestro López esq. Cruz Roja Argentina, S/N, X5016ZAA, Córdoba, Argentina
| | - María V. Gerbaldo
- Centro de Investigación y Tecnología Química, UTN-CONICET, Facultad Regional Córdoba, Maestro López esq. Cruz Roja Argentina, S/N, X5016ZAA, Córdoba, Argentina
| | - Mónica E. Crivello
- Centro de Investigación y Tecnología Química, UTN-CONICET, Facultad Regional Córdoba, Maestro López esq. Cruz Roja Argentina, S/N, X5016ZAA, Córdoba, Argentina
| | - Sandra G. Casuscelli
- Centro de Investigación y Tecnología Química, UTN-CONICET, Facultad Regional Córdoba, Maestro López esq. Cruz Roja Argentina, S/N, X5016ZAA, Córdoba, Argentina
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19
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Abdollah F, Borghei SM, Moniri E, Kimiagar S, Panahi HA. Laser irradiation for controlling size of TiO 2-Zeolite nanocomposite in removal of 2,4-dichlorophenoxyacetic acid herbicide. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 80:864-873. [PMID: 31746793 DOI: 10.2166/wst.2019.333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study focused on the synthesis of TiO2-Zeolite nanocomposite through a sol-gel approach. The decrease in the size of the nanocomposite is considered a primary parameter to improve photocatalytic activity. In this regard, fabricated samples were exposed to laser irradiation (532 nm) for four different time intervals in order to investigate the size variation of the nanocomposite. FTIR, UV-Vis, XRD, DLS, SEM and EDX analyses were applied to characterize and determine the size of the products. An optimized nanocomposite sample, in term of the particle size, was used for photodegradation of 2,4-D herbicide from aqueous solution. Photodegradation was carried out under UV irradiation (12 W) and Xe lamp irradiation (200 W). The obtained results showed that laser irradiation time has a substantial effect on controlling the size of the nanocomposite. Results from the photocatalyst study indicated that the elimination of 2,4-D under the Xe lamp irradiation was higher compared with the UV irradiation. Also, the final synthesized nanocomposite exhibited higher catalytic activity for photodegradation of 2,4-D compared with pure Zeolite and pure anatase TiO2 samples. The reusability of TiO2-Zeolite nanocomposite was studied in four successive cycles to evaluate the removal of 2,4-D under UV irradiation.
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Affiliation(s)
- Fatemeh Abdollah
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Seyed Mehdi Borghei
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Elham Moniri
- Department of Chemistry, Varamin (Pishva) Branch, Islamic Azad University, Pishva, Iran E-mail:
| | - Salimeh Kimiagar
- Nano Research Laboratory (NRL), Physics Department, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Homayon Ahmad Panahi
- Department of Chemistry, Central Tehran Branch, Islamic Azad University, Tehran, Iran
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20
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de Souza FM, Dos Santos OAA, Vieira MGA. Adsorption of herbicide 2,4-D from aqueous solution using organo-modified bentonite clay. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:18329-18342. [PMID: 31041700 DOI: 10.1007/s11356-019-05196-w] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 04/15/2019] [Indexed: 06/09/2023]
Abstract
This study analyzed the performance of organophilic clays obtained from the chemical modification of sodium bentonite clay when applied to the adsorption of herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). Kinetic curves and equilibrium isotherms were obtained in order to determine time and adsorption capacity of the material, as well as understand the mechanisms involved in this phenomenon. The results showed that the most predictive kinetic model for experimental data was of pseudo-second order (R2 > 0.98), and that external mass transfer is the dominant factor in the time of operation. Isotherms were obtained at temperatures of 298, 308, and 318 K, under which the Dubinin-Radushkevich model was shown to have a good fit to data (R2 > 0.96), according to mathematical adjustments. The maximum adsorption capacity obtained experimentally was 50.36 mg g-1, found at a temperature of 298 K, being higher or compatible with other materials reported in the literature. With help of the thermodynamic studies on the process, it was observed that the adsorption of 2,4-D in organophilic clays refers to a spontaneous (ΔG°ads < 0), exothermal (ΔH°ads = - 9.99 kJ mol-1) process of physical nature. Lastly, it was observed that the adsorbent can be easily regenerated when subjected to eluents such as mixtures containing fractions of ethanol/water (desorption = 95%).
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Affiliation(s)
- Fernando Manzotti de Souza
- Department of Chemical Engineering, State University of Maringá, Av. Colombo 5790, Maringá, Paraná, Brazil.
| | | | - Melissa Gurgel Adeodato Vieira
- School of Chemical Engineering, University of Campinas, Av. Albert Einstein, no. 500, Campinas, São Paulo, 13083-852, Brazil
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21
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Amiri MJ, Bahrami M, Beigzadeh B, Gil A. A response surface methodology for optimization of 2,4-dichlorophenoxyacetic acid removal from synthetic and drainage water: a comparative study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:34277-34293. [PMID: 30291615 DOI: 10.1007/s11356-018-3327-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 09/24/2018] [Indexed: 06/08/2023]
Abstract
The potential of a granular activated carbon (GAC), a rice husk biochar (BRH), and multi-walled carbon nanotubes (MWCNTs) for removing 2,4-dichlorophenoxyacetic acid (2,4-D) from simulated wastewater and drainage water has been evaluated. In this regard, a response surface methodology (RSM) with a central composite design (CCD) (CCD-RSM design) was used to optimize the removal of 2,4-D from simulated wastewater under different operational parameters. The maximum adsorption capacities followed the order GAC > BRH > MWCNTs, whereas the equilibrium time increased in the order MWCNTs < GAC < BRH. In the case of GAC and BRH, the 2,4-D removal percentage increased significantly upon increasing the adsorbent dosage and temperature and decreased upon increasing the initial 2,4-D concentration and pH. The results showed that the contact time and temperature were not important as regards the adsorption efficiency of 2,4-D by MWCNTs, whereas rapid removal of 2,4-D from simulated wastewater was achieved within the first 5 min of contact with the MWCNTs. The results confirmed that the Freundlich isotherm model with the highest coefficient of determination (R2) and the lowest standard error of the estimate (SEE) satisfactorily fitted the 2,4-D experimental data. In addition, successful usage of the three adsorbents investigated was observed for removal of 2,4-D from drainage water from an agricultural drainage system. An economic analysis with a rate of return (ROR) method indicated that BRH could be used as an eco-friendly, low-cost, versatile, and high adsorption capacity alternative to GAC and MWCNTs for the removal of 2,4-D.
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Affiliation(s)
- Mohammad Javad Amiri
- Department of Water Engineering, College of Agriculture, Fasa University, Fasa, 74617-81189, Iran.
| | - Mehdi Bahrami
- Department of Water Engineering, College of Agriculture, Fasa University, Fasa, 74617-81189, Iran
| | - Bahareh Beigzadeh
- Department of Water Engineering, College of Agriculture, Fasa University, Fasa, 74617-81189, Iran
| | - Antonio Gil
- INAMAT-Department of Sciences, Campus of Arrosadia, Public University of Navarra, 31006, Pamplona, Spain
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22
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López-Ortiz CM, Sentana-Gadea I, Varó-Galvañ PJ, Maestre-Pérez SE, Prats-Rico D. Effect of magnetic ion exchange (MIEX ®) on removal of emerging organic contaminants. CHEMOSPHERE 2018; 208:433-440. [PMID: 29885510 DOI: 10.1016/j.chemosphere.2018.05.194] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 05/27/2018] [Accepted: 05/31/2018] [Indexed: 06/08/2023]
Abstract
In this study, the removal of nine emerging organic contaminants was investigated by using anion exchange resins. The selected compounds were carbamazepine, atrazine, simazine, estrone, bisphenol A, methylparaben, ethylparaben, propylparaben and butylparaben. Two different magnetic anionic exchanger resins were tested: MIEX® DOC and MIEX® GOLD. The optimal resin dose (40 mL/L) and contact time (20 min) had been previously determined. Once these optimum parameters were set, the effect of the initial concentration of contaminants on the removal efficiency of the contaminants by the resins was studied. The study was carried out using mono and multicomponent systems, with distilled water and natural waters, to which contaminants had been previously added, in order to evaluate the competitive and matrix effects. Results showed that the average removal percentages obtained with the MIEX® DOC resin were: 51%, 61%, 68% and 80% for methyl-, ethyl-, propyl-, and butylparaben, respectively. For bisphenol A the result was similar, i.e., 66%, whereas for the rest of the compounds studied, removal efficiencies lower than 15% were obtained. The MIEX® GOLD resin achieved lower elimination rates than the MIEX® DOC resin in all cases.
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Affiliation(s)
- C M López-Ortiz
- University Institute of Water and Environmental Sciences, University of Alicante, 03690, San Vicente del Raspeig, Alicante, Spain
| | - I Sentana-Gadea
- University Institute of Water and Environmental Sciences, University of Alicante, 03690, San Vicente del Raspeig, Alicante, Spain
| | - P J Varó-Galvañ
- University Institute of Water and Environmental Sciences, University of Alicante, 03690, San Vicente del Raspeig, Alicante, Spain
| | - S E Maestre-Pérez
- Analytical Chemistry, Nutrition and Food Science Department, University of Alicante, 03690, San Vicente del Raspeig, Alicante, Spain.
| | - D Prats-Rico
- University Institute of Water and Environmental Sciences, University of Alicante, 03690, San Vicente del Raspeig, Alicante, Spain
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23
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Żółtowska-Aksamitowska S, Bartczak P, Zembrzuska J, Jesionowski T. Removal of hazardous non-steroidal anti-inflammatory drugs from aqueous solutions by biosorbent based on chitin and lignin. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 612:1223-1233. [PMID: 28892866 DOI: 10.1016/j.scitotenv.2017.09.037] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 09/04/2017] [Accepted: 09/04/2017] [Indexed: 06/07/2023]
Abstract
The use of chitin modified with kraft lignin as an effective sorbent of ibuprofen and acetaminophen is described for the first time. It was determined how the parameters (contact time, pH, mass of sorbent and temperature) influence the effectiveness of the adsorption process. The adsorption kinetics were calculated using pseudo-first-order, pseudo-second-order (types 1-4) and intra-particle diffusion models, and thermodynamic parameters were determined. The experimental data better correspond to a pseudo-second-order kinetic model of type 1 in the case of both tested pharmaceuticals (r2=0.999). The negative values of ΔH° show the adsorption to be exothermic (-5.515kJ/mol and -5.161kJ/mol for ibuprofen and acetaminophen respectively). Adsorption isotherms, using Langmuir isotherms of types 1-4 and Freundlich model, were also determined. The experimental data better correspond to the Langmuir type 1 model in the case of ibuprofen, and to the Freundlich model in the case of acetaminophen. Desorption tests were carried out to confirm the possibility of reusing the chitin/lignin system. A mechanism of adsorption of ibuprofen and acetaminophen on the chitin/lignin system was also proposed.
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Affiliation(s)
- Sonia Żółtowska-Aksamitowska
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland
| | - Przemysław Bartczak
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland
| | - Joanna Zembrzuska
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemistry and Technical Electrochemistry, Berdychowo 4, PL-60965 Poznan, Poland
| | - Teofil Jesionowski
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland.
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Tan L, Shuang C, Wang Y, Wang J, Su Y, Li A. Effect of pore structure on the removal of clofibric acid by magnetic anion exchange resin. CHEMOSPHERE 2018; 191:817-824. [PMID: 29080542 DOI: 10.1016/j.chemosphere.2017.10.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Revised: 06/14/2017] [Accepted: 10/01/2017] [Indexed: 06/07/2023]
Abstract
The effect of pore structure of resin on clofibric acid (CA) adsorption behavior was investigated by using magnetic anion exchange resins (ND-1, ND-2, ND-3) with increasing pore diameter by 11.68, 15.37, 24.94 nm. Resin with larger pores showed faster adsorption rates and a higher adsorption capacity because the more opened tunnels provided by larger pores benefit the CA diffusion into the resin matrix. The ion exchange by the electrostatic interactions between Cl-type resin and CA resulted in chloride releasing to the solution, and the ratio of released chloride to CA adsorption amount decreased from 0.90 to 0.65 for ND-1, ND-2 and ND-3, indicating that non-electrostatic interactions obtain a larger proportional part of the adsorption into the pores. Co-existing inorganic anions and organic acids reduced the CA adsorption amounts by the competition effect of electrostatic interaction, whereas resins with more opened pore structures weakened the negative influence on CA adsorption because of the existence of non-electrostatic interactions. 85.2% and 65.1% adsorption amounts decrease are calculated for resin ND-1 and ND-3 by the negative influence of 1 mmol L-1 NaCl. This weaken effect of organic acid is generally depends on its hydrophobicity (Log Kow) for carboxylic acid and its ionization degree (pKb) for sulfonic acid. The resins could be reused with the slightly decreases by 1.9%, 3.2% and 5.4% after 7 cycles of regeneration, respectively for ND-1, ND-2 and ND-3, suggesting the ion exchange resin with larger pores are against its reuse by the brine solution regeneration.
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Affiliation(s)
- Liang Tan
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
| | - Chendong Shuang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China.
| | - Yunshu Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
| | - Jun Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
| | - Yihong Su
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
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Bartczak P, Klapiszewski Ł, Wysokowski M, Majchrzak I, Czernicka W, Piasecki A, Ehrlich H, Jesionowski T. Treatment of model solutions and wastewater containing selected hazardous metal ions using a chitin/lignin hybrid material as an effective sorbent. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 204:300-310. [PMID: 28898751 DOI: 10.1016/j.jenvman.2017.08.059] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 07/31/2017] [Accepted: 08/31/2017] [Indexed: 06/07/2023]
Abstract
A chitin/lignin material with defined physicochemical and morphological properties was used as an effective adsorbent of environmentally toxic metals from model systems. Particularly significant is its use in the neutralization of real industrial wastes. The ions Ni2+, Cu2+, Zn2+ and Pb2+ were adsorbed on the functional sorbent, confirming the high sorption capacity of the newly obtained product, primarily due to the presence on its surface of numerous active functional groups from the component biopolymers. The kinetics of the process of ion adsorption from model solution were investigated, and the experimental data were found to fit significantly better to a type 1 pseudo-second-order kinetic model, as confirmed by the high correlation coefficient of 0.999 for adsorption of both nickel(II) copper(II) zinc(II) and lead(II) ions. The experimental data obtained on the basis of adsorption isotherms corresponded to the Langmuir model. The sorption capacity of the chitin/lignin material was measured at 70.41 mg(Ni2+)/g, 75.70 mg(Cu2+)/g, 82.41 mg(Zn2+)/g and 91.74 mg(Pb2+)/g. Analysis of thermodynamic parameters confirmed the endothermic nature of the process. It was also shown that nitric acid is a very effective desorbing (regenerating) agent, enabling the chitin/lignin material to be reused as an effective sorbent of metal ions. The sorption abilities of the chitin/lignin system with respect to particular metal ions can be ordered in the sequence Ni2+<Cu2+<Zn2+<Pb2+. Tests were also performed with the adsorption of ions of nickel(II), copper(II), zinc(II) and lead(II) from wastewater obtained from galvanization and battery production plants, confirming the ability of the chitin/lignin sorbent to adsorb harmful ions from real industrial wastes.
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Affiliation(s)
- Przemysław Bartczak
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965, Poznan, Poland
| | - Łukasz Klapiszewski
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965, Poznan, Poland
| | - Marcin Wysokowski
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965, Poznan, Poland
| | - Izabela Majchrzak
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965, Poznan, Poland
| | - Weronika Czernicka
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965, Poznan, Poland
| | - Adam Piasecki
- Poznan University of Technology, Faculty of Mechanical Engineering and Management, Institute of Materials Science and Engineering, Jana Pawla II 24, PL-60965, Poznan, Poland
| | - Hermann Ehrlich
- TU Bergakademie Freiberg, Institute of Experimental Physics, Leipziger 23, D-09599, Freiberg, Germany
| | - Teofil Jesionowski
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965, Poznan, Poland.
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Application of modified magnetic nanoparticles with amine groups as an efficient solid sorbent for simultaneous removal of 2,4-Dichlorophenoxyacetic acid and 2-methyl-4-chlorophenoxyacetic acid from aqueous solution: optimization and modeling. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1243-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Preparation of Cationic MOFs with Mobile Anions by Anion Stripping to Remove 2,4-D from Water. MATERIALS 2017; 10:ma10080879. [PMID: 28773239 PMCID: PMC5578245 DOI: 10.3390/ma10080879] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 07/18/2017] [Accepted: 07/24/2017] [Indexed: 11/18/2022]
Abstract
A cationic porous framework with mobile anions (MIL-101(Cr)-Cl) was easily and successfully synthesized by utilizing the stronger affinity of F− to Al3+ than Cr3+ in the charge-balanced framework of MIL-101(Cr). The structure, morphology and porosity of MIL-101(Cr)-Cl were characterized. The obtained new materials retain the high surface area, good thermostability, and structure topology of MIL-101(Cr). With the mobile Cl− anion, MIL-101(Cr)-Cl can be used as an ion-exchange material for anionic organic pollutions. In this work, 2,4-dichlorophenoxyacetic acid (2,4-D) was used as a model to test the absorption performance of this new material. This new material exhibited improved adsorbability compared to that of the original metal-organic frameworks (MOFs). At the same time, this material also shows high anti-interference performance with changing solution pH.
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Wang T, Pan X, Ben W, Wang J, Hou P, Qiang Z. Adsorptive removal of antibiotics from water using magnetic ion exchange resin. J Environ Sci (China) 2017; 52:111-117. [PMID: 28254029 DOI: 10.1016/j.jes.2016.03.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 03/22/2016] [Accepted: 03/24/2016] [Indexed: 06/06/2023]
Abstract
The occurrence of antibiotics in the environment has recently raised serious concern regarding their potential threat to aquatic ecosystem and human health. In this study, the magnetic ion exchange (MIEX) resin was applied for removing three commonly-used antibiotics, sulfamethoxazole (SMX), tetracycline (TCN) and amoxicillin (AMX) from water. The results of batch experiments show that the maximum adsorption capacities on the MIEX resin for SMX, TCN and AMX were 789.32, 443.18 and 155.15μg/mL at 25°C, respectively, which were 2-7 times that for the powdered activated carbon. The adsorption kinetics of antibiotics on the MIEX resin could be simulated by the pseudo-second-order model (R2=0.99), and the adsorption isotherm data were well described by the Langmuir model (R2=0.97). Solution pH exhibited a remarkable impact on the adsorption process and the absorbed concentrations of the tested antibiotics were obtained around the neutral pH. The MIEX resin could be easily regenerated by 2mol/L NaCl solution and maintained high adsorption removal for the tested antibiotics after regeneration. Anion exchange mechanism mainly controlled the adsorption of antibiotic and the formation of hydrogen binding between the antibiotic and resin can also result in the increase of adsorption capacity. The high adsorption capacity, fast adsorption rate and prominent reusability make the MIEX resin a potential adsorbent in the application for removing antibiotics from water.
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Affiliation(s)
- Tianyue Wang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Chemical and Environmental Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China
| | - Xun Pan
- Foreign Economic Cooperation Office, Ministry of Environmental Protection, Beijing 100035, China
| | - Weiwei Ben
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Jianbing Wang
- School of Chemical and Environmental Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China
| | - Pin Hou
- School of Chemical and Environmental Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China
| | - Zhimin Qiang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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29
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Qiu P, Yao J, Chen H, Jiang F, Xie X. Enhanced visible-light photocatalytic decomposition of 2,4-dichlorophenoxyacetic acid over ZnIn2S4/g-C3N4 photocatalyst. JOURNAL OF HAZARDOUS MATERIALS 2016; 317:158-168. [PMID: 27267690 DOI: 10.1016/j.jhazmat.2016.05.069] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 05/19/2016] [Accepted: 05/22/2016] [Indexed: 06/06/2023]
Abstract
ZnIn2S4/g-C3N4 heterojunction photocatalyst was successfully synthesized via a simple hydrothermal method and applied to visible-light photocatalytic decomposition of 2,4-dichlorophenoxyacetic acid (2,4-D) from aqueous phase. The flower-like ZnIn2S4 particles were dispersed on the surface of g-C3N4 nanosheets in the ZnIn2S4/g-C3N4 composite. The composite showed higher separation rate of electron-hole pairs as compared to ZnIn2S4 and g-C3N4. Consequently, the ZnIn2S4/g-C3N4 composite exhibited enhanced visible light photocatalytic decomposition efficiency of 2,4-D, within 20% ZnIn2S4/g-C3N4 composite owning the highest photocatalytic efficiency and initial rate. The initial rates of 2,4-D degradation on g-C3N4, ZnIn2S4, and 20% ZnIn2S4/g-C3N4 were 1.23, 0.57 and 3.69mmol/(gcath), respectively. The h(+) and O2(-) were found to be the dominant active species for 2,4-D decomposition. The photocatalytic degradation pathways of 2,4-D by ZnIn2S4/g-C3N4 under visible light irradiation were explored. The ZnIn2S4/g-C3N4 composite displayed high photostability in recycling tests, reflecting its promising potential as an effective visible light photocatalyst for 2,4-D treatment.
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Affiliation(s)
- Pengxiang Qiu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, Engineering Research Center for Chemical Pollution Control, Ministry of Education, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jinhua Yao
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, Engineering Research Center for Chemical Pollution Control, Ministry of Education, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Huan Chen
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, Engineering Research Center for Chemical Pollution Control, Ministry of Education, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Fang Jiang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, Engineering Research Center for Chemical Pollution Control, Ministry of Education, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Xianchuan Xie
- State Key Laboratory of Pollution Control and Resource Reuse, Center for Hydrosciences Research, School of the Environment, Nanjing University, Nanjing 210094, China
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30
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31
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Lu X, Shao Y, Gao N, Chen J, Zhang Y, Wang Q, Lu Y. Adsorption and removal of clofibric acid and diclofenac from water with MIEX resin. CHEMOSPHERE 2016; 161:400-411. [PMID: 27448753 DOI: 10.1016/j.chemosphere.2016.07.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 07/05/2016] [Accepted: 07/07/2016] [Indexed: 06/06/2023]
Abstract
This study demonstrates the use of MIEX resin as an efficient adsorbent for the removal of clofibric acid (CA) and diclofenac (DCF). The adsorption performance of CA and DCF are investigated by a batch mode in single-component or bi-component adsorption system. Various factors influencing the adsorption of CA and DCF, including initial concentration, contact time, adsorbent dosage, initial solution pH, agitation speed, natural organic matter and coexistent anions are studied. The Langmuir model can well describe CA adsorption in single-component system, while the Freundlich model gives better fitting in bi-component system. The DCF adsorption can be well fitted by the Freundlich model in both systems. Thermodynamic analyses show that the adsorption of CA and DCF is an endothermic (ΔH(o) > 0), entropy driven (ΔS(o) > 0) process and more randomness exists in the DCF adsorption process. The values of Gibbs free energy (ΔG(o) < 0) indicate the adsorption of DCF is spontaneous but nonspontaneous (ΔG(o) > 0) for CA adsorption. The kinetic data suggest the adsorption of CA and DCF follow the pseudo-first-order model in both systems and the intra-particle is not the unique rate-limiting step. The adsorption process is controlled simultaneously by external mass transfer and surface diffusion according to the surface diffusion modified Biot number (Bis) ranging from 1.06 to 26.15. Moreover, the possible removal mechanism for CA and DCF is respectively proposed based on the ion exchange stoichiometry.
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Affiliation(s)
- Xian Lu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Yisheng Shao
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China; China Academy of Urban Planning & Design, Beijing, China.
| | - Naiyun Gao
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Juxiang Chen
- College of Architecture and Civil Engineering, Xinjiang University, Urumqi, China
| | - Yansen Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Qiongfang Wang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Yuqi Lu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
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32
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Application of rice husk nanosorbents containing 2,4-dichlorophenoxyacetic acid herbicide to control weeds and reduce leaching from soil. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.03.024] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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33
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Conte LO, Schenone AV, Alfano OM. Photo-Fenton degradation of the herbicide 2,4-D in aqueous medium at pH conditions close to neutrality. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 170:60-9. [PMID: 26800432 DOI: 10.1016/j.jenvman.2016.01.002] [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: 10/05/2015] [Revised: 12/29/2015] [Accepted: 01/03/2016] [Indexed: 05/23/2023]
Abstract
A theoretical and experimental study of the photo-Fenton degradation of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) in water is presented. A kinetic model derived from a reaction sequence is proposed using the ferrioxalate complex as iron source for conditions of pH = 5. The kinetic model was employed to predict the concentrations of 2,4-D, 2,4-dichlorophenol (2,4-DCP), hydrogen peroxide (HP) and oxalate (Ox) in a flat plate laboratory reactor irradiated with a solar simulator. Two types of incident irradiation levels were tested by different combinations of attenuation filters. The effects of the oxalate/Fe(+3) molar ratio (Ox/Fe), the reaction temperature (T) and the 2,4-D/HP molar ratio (R) on the photo-Fenton process were also investigated. For low radiation level and operating conditions of R = 50 and T = 50 °C, a 2,4-D conversion of 95.6% was obtained after 180 min. Moreover, the 2,4-D conversion was almost 100% in only 120 min when the system was operated under the same operating conditions and high radiation level. From the proposed model and the experimental data, the corresponding kinetic parameters were estimated applying a nonlinear regression method. A good agreement between the kinetic model and experimental data, for a wide range of simulated solar operating conditions, was observed. For 2,4-D, 2,4-DCP, HP and Ox concentrations, the calculated RMSE were 1.21 × 10(-2), 5.45 × 10(-3), 2.86 × 10(-1) and 2.65 × 10(-2) mM, respectively.
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Affiliation(s)
- Leandro O Conte
- INTEC (CONICET-UNL), Ruta Nacional Nº 168, 3000, Santa Fe, Argentina
| | | | - Orlando M Alfano
- INTEC (CONICET-UNL), Ruta Nacional Nº 168, 3000, Santa Fe, Argentina.
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Santiago CC, Fernández MA, Torres Sánchez RM. Adsorption and characterization of MCPA on DDTMA- and raw-montmorillonite: Surface sites involved. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2016; 51:245-253. [PMID: 26786275 DOI: 10.1080/03601234.2015.1120618] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The 4-chloro-2-methylphenoxy acid (MCPA) is an herbicide widely used in agriculture, which generates a great concern about contamination of surface water and serious consequences for human health and the environment. In this work, the adsorption of MCPA on an Argentine montmorillonite (MMT) and its organo-montmorillonite product (OMMT) with different dodecyl trimethyl ammonium loading was investigated. MCPA adsorption on OMMT increases at least 3 times, with respect to the amount determined for MMT. X-ray diffraction and zeta potential analyses indicated the inner (interlayer) and outer surface participate as adsorption sites. Changes in surface electric charge and also interlayer expansion suggest that dimethyl amine (MCPA counterion) was also surface-adsorbed. The larger aggregates of OMMT, without and with MCPA, obtained compared to those of MMT samples, generate an improvement in the coagulation efficiency. This property, particularly after MCPA retention, allows an easier separation of the solids from the solution and enables a simple technological process application.
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Affiliation(s)
- Cintia C Santiago
- a Technology Center of Mineral Resources and Ceramics , M. B. Gonnet , Argentina
| | - Mariela A Fernández
- a Technology Center of Mineral Resources and Ceramics , M. B. Gonnet , Argentina
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35
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Liu C, He S, Sun Z, Wang J, Chen W. Removal efficiency of MIEX® pretreatment on typical proteins and amino acids derived from Microcystis aeruginosa. RSC Adv 2016. [DOI: 10.1039/c6ra11109b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Main categories of typical proteins and amino acids derived fromM. aeruginosawere identified and their removal by MIEX® was discussed.
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Affiliation(s)
- Cheng Liu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes
- Ministry of Education
- Hohai University
- Nanjing 210098
- China
| | - Siyuan He
- College of Environment
- Hohai University
- Nanjing 210098
- China
| | - Zhehao Sun
- College of Environment
- Hohai University
- Nanjing 210098
- China
| | - Jie Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes
- Ministry of Education
- Hohai University
- Nanjing 210098
- China
| | - Wei Chen
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes
- Ministry of Education
- Hohai University
- Nanjing 210098
- China
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36
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Lu X, Shao Y, Gao N, Chen J, Wang Q, Zhu Y. Control of disinfection by-product derived from humic acid using MIEX process: optimization through response surface methodology. RSC Adv 2016. [DOI: 10.1039/c6ra17022f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Response surface methodology (RSM) was used to optimize humic acid (HA) removal by MIEX resin for controlling the disinfection by-product (DBP) formation.
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Affiliation(s)
- Xian Lu
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Yisheng Shao
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Naiyun Gao
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Juxiang Chen
- College of Architecture and Civil Engineering
- Xinjiang University
- Urumqi
- China
| | - Qiongfang Wang
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Yanping Zhu
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
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37
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Removal of cadmium(II) and lead(II) ions from model aqueous solutions using sol–gel-derived inorganic oxide adsorbent. ADSORPTION 2015. [DOI: 10.1007/s10450-015-9703-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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38
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Peng D, Li X, Zhang L, Gong J. Novel visible-light-responsive photoelectrochemical sensor of 2,4-dichlorophenoxyacetic acid using molecularly imprinted polymer/BiOI nanoflake arrays. Electrochem commun 2014. [DOI: 10.1016/j.elecom.2014.07.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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39
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Investigation of 2,4-dichlorophenoxyacetic acid adsorption onto MIEX resin: Optimization using response surface methodology. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.02.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Removal of dissolved organic carbon from surface water by anion exchange and adsorption: Bench-scale testing to simulate a two-stage countercurrent process. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2013.12.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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