Adsorption coupled photocatalytic degradation of dichlorvos using LaNiMnO6perovskite nanoparticles supported on polypropylene filter cloth and carboxymethyl cellulose microspheres
| Autor: | Devlina Das, Sahithya K, Nilanjana Das |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Materials science General Chemical Engineering Nanoparticle 02 engineering and technology 010501 environmental sciences 01 natural sciences Catalysis Industrial wastewater treatment chemistry.chemical_compound Adsorption medicine Environmental Chemistry Waste Management and Disposal 0105 earth and related environmental sciences General Environmental Science Water Science and Technology Perovskite (structure) Polypropylene Renewable Energy Sustainability and the Environment Environmental engineering 021001 nanoscience & nanotechnology Carboxymethyl cellulose chemistry Chemical engineering Photocatalysis 0210 nano-technology medicine.drug |
| Zdroj: | Environmental Progress & Sustainable Energy. 36:180-191 |
| ISSN: | 1944-7442 |
| Popis: | Increasing pesticide application and improper wastewater disposal methods contaminate water resources and severely affect the ecology as well as environment. The present study is focused on the adsorption coupled photocatalytic degradation of dichlorvos using UV light in presence of LaNiMnO6 perovskite nanoparticles (Prv) supported on polypropylene filter cloth (PPPrv) and carboxymethyl cellulose (CMCPrv) microspheres. The synthesized LaNiMnO6 perovskite nanoparticles were characterized by XRD, FT-IR, SEM and EDX. The adsorption percentage of DCV followed the order: CMCPrv (62.7%) > PPPrv (46.1%) > Prv (32.6%). Equilibrium studies suggested the heterogenous mode of adsorption. Pseudo-first order exhibited the good linearity indicating the involvement of physical forces. Thermodynamics showed an endothermic and spontaneous nature of adsorption. The influences of various photocatalytic parameters viz., pH, irradiation time, initial DCV concentration, Prv loading and catalyst dosage on DCV degradation were investigated. Ex situ studies conducted for 8 h of sunlight exposure showed complete degradation of DCV present in industrial wastewater which was confirmed by GC-MS analysis. The advantage of CMCPrv as supported catalyst is the easy separation and reuse for four cycles. The present work is the first report that signifies the potential efficacy of CMCPrv to serve as an effective remedial agent for DCV removal from contaminated water. © 2016 American Institute of Chemical Engineers Environ Prog, 2016 |
| Databáze: | OpenAIRE |
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