Journal ArticleDOI
Removal of mixed pesticides from drinking water system by photodegradation using suspended and immobilized TiO2.
TLDR
During mixed pesticides degradation, the degradation pattern was not similar to that of single pesticide and there was not much change in the rates of degradation in both suspended and immobilized TiO2 systems irrespective of the pesticide.Abstract:
Lindane (1α, 2α, 3β, 4α, 5α, 6β-hexachloro cyclohexane), methyl parathion (O,O-dimethyl-O-4-nitrophenyl phosphorothioate) and dichlorvos (2,2-dichlorovinyl-O-O-dimethyl phosphate) are removed from water individually and as a mixture by photo degradation using suspended and immobilized forms of TiO2 (Degussa P-25). Studies were conducted to optimize the coating thickness of immobilized photo catalyst. The rate of degradation of pesticides was compared in both suspended and immobilized TiO2 systems. Degradation studies of mixed pesticides were carried out with low concentrations (1.0 and 2.5 mg/L) of pesticides. Only three intermediate byproducts such as methyl paraoxon, O,O,O-trimethyl phosphonic thionate and p-nitrophenol were observed during the methyl parathion degradation in suspended, immobilized TiO2 systems and mixed pesticides degradation studies. At the end of the reaction methyl parathion and its by-products were completely degraded. During lindane degradation hexachloro cyclohexane, pentachloro ...read more
Citations
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Journal ArticleDOI
A Novel Polyester Fabric Treated with Nanoclay/Nano TiO 2 /PAMAM for Discoloration of Reactive Red 4 from Aqueous Solution Under UVA Irradiation
TL;DR: In this article, a commercially available absorbent with a high absorbance capacity (Cloisite® 15A) together with the high active nano photocatalyst (AEROXIDE® TiO2 P 25) and polyamidoamine based dendrimer (PAMAM) were immobilized on polyester fabric through simple pad-dry-cure method for removing dye from an aqueous solution.
Book ChapterDOI
Photocatalysis (TiO2/Solar) in Water and Wastewater Treatment
TL;DR: In this paper, the authors reviewed the mechanism involved in this process, characteristics of semiconductor photocatalyst, difference between suspended and immobilized photocatalysis system, comparison between the use of natural sunlight and commercial lamp, also the reactor involved.
Effect of pH on the surface morphology and structural properties of TiO2 nanocrystals prepared by simple sol-gel method
TL;DR: In this article, a sol-gel method was used to synthesize TiO2 nanocrystals at room temperature and the pH of the solution was adjusted by adding nitric acid and sodium hydroxide solution.
Journal ArticleDOI
Analysis of Organochlorine Pesticides in Drinking Water and their Degradation by Synthesized Iron oxide Nanoparticles
TL;DR: In this article, the analysis of drinking water sources of river Krishni catchment, contaminated by organochlorine pesticides using advanced oxidation processes was reported, where iron oxide nanoparticles had been synthesized through co-precipitation method and utilized for the degradation of organochemicals using advanced oxidization processes.
Book ChapterDOI
Removal of Pesticides Using Carbon-Based Nanocomposite Materials
Shahnawaz Uddin,Shahnawaz Uddin +1 more
TL;DR: In this article, different properties/characteristics of carbon-based nanomaterials/nanocomposites from the point of view of environmental remediation along with adsorption mechanisms have been described in an elucidate manner.
References
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Journal ArticleDOI
An overview of semiconductor photocatalysis
Andrew Mills,Stephen Le Hunte +1 more
TL;DR: An overview of the field of semiconductor photocatalysis can be found in this paper, where a brief examination of its roots, achievements and possible future is presented, and the semiconductor titanium dioxide (TiO 2 ) features predominantly in past and present work.
Journal ArticleDOI
Solar light induced and TiO2 assisted degradation of textile dye reactive blue 4.
Bernaurdshaw Neppolian,Heechul Choi,Shanmugasundaram Sakthivel,Banumathi Arabindoo,Velayutham Murugesan +4 more
TL;DR: It is concluded that solar light induced degradation of textile dye in wastewater is a viable technique for wastewater treatment.
Journal ArticleDOI
Pesticide chemical oxidation: state-of-the-art.
TL;DR: In this article, various currently used chemical oxidation processes (AOPs) for pesticide elimination from wastewater are reported, including Heterogeneous TiO 2 photocatalysis, ozonation and photo-Fenton's reagent.
Journal ArticleDOI
Pesticide exposure--Indian scene.
TL;DR: Problems of pesticide safety, regulation of pesticide use, use of biotechnology, and biopesticides, and use of pesticides obtained from natural plant sources such as neem extracts are some of the future strategies for minimizing human exposure to pesticides.
Journal ArticleDOI
Sources and pathways of selected organochlorine pesticides to the Arctic and the effect of pathway divergence on HCH trends in biota: a review.
Yi-Fan Li,Robie W. Macdonald +1 more
TL;DR: The HCHs provide an elegant example of how hemispheric-scale solvent switching processes can alter the ocean into which an HCH congener partitions, how air-water partitioning controls the pathway for H CHs entering the Arctic, and how the various pathways impact spatial and temporal trends of HCH residues in arctic animals feeding out of marine and terrestrial foodwebs.
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