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Yadav K, Raut SS, Patro TU, Abhyankar AC, Kulkarni PS. Annealing Temperature- and Morphology-Controlled Development of Nickel Cobaltite Nanoneedles for Photocatalytic Degradation of Nitroaromatics. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c05046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kaumudi Yadav
- Department of Metallurgical & Materials Engineering, Ministry of Defence, Defence Institute of Advanced Technology (DU), Pune 411 025, India
| | - Sandesh S. Raut
- Energy and Environment Laboratory, Department of Applied Chemistry, Ministry of Defence, Defence Institute of Advanced Technology (DU), Pune 411 025, India
| | - T. Umasankar Patro
- Department of Metallurgical & Materials Engineering, Ministry of Defence, Defence Institute of Advanced Technology (DU), Pune 411 025, India
| | - Ashutosh C. Abhyankar
- Department of Metallurgical & Materials Engineering, Ministry of Defence, Defence Institute of Advanced Technology (DU), Pune 411 025, India
| | - Prashant S. Kulkarni
- Energy and Environment Laboratory, Department of Applied Chemistry, Ministry of Defence, Defence Institute of Advanced Technology (DU), Pune 411 025, India
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Goutham R, Rohit P, Vigneshwar SS, Swetha A, Arun J, Gopinath KP, Pugazhendhi A. Ionic liquids in wastewater treatment: A review on pollutant removal and degradation, recovery of ionic liquids, economics and future perspectives. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118150] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Raut SS, Kamble SP, Kulkarni PS. Improved photocatalytic efficiency of TiO 2 by doping with tungsten and synthesizing in ionic liquid: precise kinetics-mechanism and effect of oxidizing agents. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:17532-17545. [PMID: 33400106 DOI: 10.1007/s11356-020-12107-x] [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: 07/02/2020] [Accepted: 12/14/2020] [Indexed: 06/12/2023]
Abstract
The degradation of nitroaromatics/toxic energetic compounds contaminated water is a major cause of concern. W-doped TiO2 nanoparticles (NPs) were synthesized in ionic liquid, ethyl methyl imidazolium dicyanamide (EMIM-DCA) by a solvothermal method. The developed NPs were sintered at 500 °C and characterized by UV-Vis-DRS, FT-IR, FE-SEM, XRD, XPS, and BET techniques. The 30-40-nm-sized NPs were subjected to photocatalytic degradation of the toxic energetic compound, tetryl (2,4,6-trinitrophenylmethylnitramine) under UV-Vis light. Various operating parameters such as the effect of concentration of catalyst, pH of feed phase, oxidizing agents, and recycling of catalyst were studied in detail. For the first time, the degradation-mechanism pathway and kinetics of tetryl were evaluated. The degradation products were precisely analyzed by using HPLC, GC-MS, and TOC techniques. The USEPA has prescribed a drinking water limit of 0.02 mg L-1, and it was found that 0.5 g of 4% W-TiO2 could totally degrade tetryl (50 mg L-1) within 8 h. The kinetic rate constant of 4% W-TiO2 was 0.356 h-1, whereas pure TiO2 showed 0.207 h-1.
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Affiliation(s)
- Sandesh S Raut
- Energy and Environment Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DU), Ministry of Defence, Pune, 411025, India
| | - Sanjay P Kamble
- Chemical Engineering and Process Development Division, National Chemical Laboratory (NCL), CSIR, Pune, 411008, India
| | - Prashant S Kulkarni
- Energy and Environment Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DU), Ministry of Defence, Pune, 411025, India.
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Fojtášková J, Koutník I, Vráblová M, Sezimová H, Maxa M, Obalová L, Pánek P. Antibacterial, Antifungal and Ecotoxic Effects of Ammonium and Imidazolium Ionic Liquids Synthesized in Microwaves. Molecules 2020; 25:E5181. [PMID: 33172179 PMCID: PMC7664430 DOI: 10.3390/molecules25215181] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 10/27/2020] [Accepted: 11/04/2020] [Indexed: 11/16/2022] Open
Abstract
Ionic liquids are increasingly used for their superior properties. Four water-immiscible ionic liquids (butyltriethylammonium bis(trifluoromethylsulfonyl)imide, octyltriethylammonium bis(trifluoromethylsulfonyl)imide, dodecyltriethylammonium bis(trifluoromethylsulfonyl)imide, butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide) and their water miscible precursors (bromides) were synthesized in a microwave reactor and by conventional heating. The best conditions for microwave-assisted synthesis concerning the yield and the purity of the product are proposed. The heating in the microwave reactor significantly shortened the reaction time. Biocide and ecotoxic effects of synthesized ionic liquids and their precursors were investigated. All tested compounds had at least a little effect on the growth or living of microorganisms (bacteria or mold). The precursor dodecyltriethylammonium bromide was found to be the strongest biocide, but posed a risk to the aquatic environment due to its relatively high EC50 value in the test with Vibrio fischeri. We assumed that apart from the alkyl chain length, the solubility in water, duration of action, or type of anion can influence the final biocide and ecotoxic effect.
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Affiliation(s)
- Jana Fojtášková
- Institute of Environmental Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (J.F.); (I.K.); (L.O.); (P.P.)
- Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
| | - Ivan Koutník
- Institute of Environmental Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (J.F.); (I.K.); (L.O.); (P.P.)
- Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
| | - Martina Vráblová
- Institute of Environmental Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (J.F.); (I.K.); (L.O.); (P.P.)
| | - Hana Sezimová
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic;
| | - Milan Maxa
- TECHEM CZ, Ltd., Ondříčkova 1300/48, 130 05 Praha 3, Czech Republic;
| | - Lucie Obalová
- Institute of Environmental Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (J.F.); (I.K.); (L.O.); (P.P.)
| | - Petr Pánek
- Institute of Environmental Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (J.F.); (I.K.); (L.O.); (P.P.)
- Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
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Isosaari P, Srivastava V, Sillanpää M. Ionic liquid-based water treatment technologies for organic pollutants: Current status and future prospects of ionic liquid mediated technologies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 690:604-619. [PMID: 31301501 DOI: 10.1016/j.scitotenv.2019.06.421] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/25/2019] [Accepted: 06/25/2019] [Indexed: 05/19/2023]
Abstract
Water scarcity motivated the scientific researcher to develop efficient technologies for the wastewater treatment for its reuse. Ionic liquids have been applied to many industrial and analytical separation processes, but their applications in the wastewater treatment, especially in the removal of organic pollutants, are still not well explored. Potential applications of ionic liquids include solvent extraction, solvent membrane technologies and ionic liquid-modified materials that are mainly used as adsorbents. Aforementioned technologies have been examined for the abatement of phenol, chloro- and nitrophenols, toluene, bisphenol A, phthalates, pesticides, dyes, and pharmaceuticals etc. Present review enlightens the application of different ionic liquids in wastewater treatment and suggests the versatility of ionic liquids in the development of rapid, effective and selective removal processes for the variety of organic pollutants. Implementation of ionic liquid based technologies for wastewater treatment have lots of challenges including the selection of non-hazardous ionic liquids, technological applications, high testing requirements for individual uses and scaling-up of the entire pollutant removal, disposal, and ionic liquid regeneration process. Toxicity assessment of water soluble ionic liquids (ILs) is the major issue due to the widespread application of ILs and hence more exposure of environment by ILs. The development of effective technologies for the recovery/treatment of wastewater contaminated with ILs is necessary from the environmental point of view. Furthermore, the cost factor is the major challenge associated with ionic liquid-based technologies.
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Affiliation(s)
- Pirjo Isosaari
- Department of Green Chemistry, School of Engineering Science, Lappeenranta-Lahti University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland
| | - Varsha Srivastava
- Department of Green Chemistry, School of Engineering Science, Lappeenranta-Lahti University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland.
| | - Mika Sillanpää
- Department of Green Chemistry, School of Engineering Science, Lappeenranta-Lahti University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland
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Raut SS, Adpa SK, Jambhale A, Abhyankar AC, Kulkarni PS. Enhanced Photocatalytic Activity of Magnetic BaFe12O19 Nanoplatelets than TiO2 with Emphasis on Reaction Kinetics, Mechanism, and Reusability. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02859] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sandesh S. Raut
- Energy and Environment Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DU), Ministry of Defence, Pune 411 025, India
| | - Santhosh Kumar Adpa
- Magnetic Materials Laboratory, Department of Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Pune 411 025, India
| | - Amruta Jambhale
- Magnetic Materials Laboratory, Department of Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Pune 411 025, India
| | - Ashutosh C. Abhyankar
- Magnetic Materials Laboratory, Department of Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Pune 411 025, India
| | - Prashant S. Kulkarni
- Energy and Environment Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DU), Ministry of Defence, Pune 411 025, India
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