aqueous phase thiosulfate removal using photo catalysis
نویسندگان
چکیده
removal of thiosulfate (s2o32-, 200 mg/l) from simulated wastewater samples was investigated under varying co-pollutants and ph conditions employing the titanium dioxide (tio2) mediated photocatalysis. for thiosulfate only studies higher substrate removal was noted at lower ph with a specific trend of ph 4 > ph 7 > ph 10. furthermore, near complete thiosulfate removal was also achieved at ph 4. a similar thiosulfate removal trend was also noted for the binary thiosulfate & p-cresol and thiosulfate & thiocyanate systems at ph 4, indicating high photocatalysis process efficiency. however, thiosulfate removal from the mixed systems at ph greater than 4 was slower as compared to the respective thiosulfate only systems. nevertheless for the binary thiosulfate & thiocyanate system, significant thiosulfate removal was noted even at ph 12 when the thiosulfate concentration was reduced to 40 mg/l.
منابع مشابه
Amphiphilic photo-isomerisable phosphanes for aqueous organometallic catalysis.
Water-soluble phosphanes were tagged with a light-responding diazo group. Upon UV exposure, the diazo-isomerisation led to phosphane morphology change, resulting in an increase in the reaction rate of an aqueous palladium-catalysed cleavage reaction.
متن کاملOptimizing photo-Fenton like process for the removal of diesel fuel from the aqueous phase
BACKGROUND In recent years, pollution of soil and groundwater caused by fuel leakage from old underground storage tanks, oil extraction process, refineries, fuel distribution terminals, improper disposal and also spills during transferring has been reported. Diesel fuel has created many problems for water resources. The main objectives of this research were focused on assessing the feasibility ...
متن کاملComplete removal of textile dyes from aqueous media using ionic-liquid-based aqueous two-phase systems
متن کامل
Aqueous Phase Removal of Fluoride as Fluorosis agent Using Montmorillonite Clay as Natural Nanoadsorbent
Natural nanomaterial; Montmorillonite Clay was collected and purified and then applied in the removal of Fluoride. The Montmorillonite Clay was grounded and 150g was weighed and refluxed in 500mL 1MHCl at 1200C for one hour thirty minutes and activated Montmorillonite Clay was obtained. Flouride was determined with the aid of SPADNS Reagent (2-parasulfophenylazo)-1,8-dihydroxy-3,6-naphthalene d...
متن کاملAqueous phase homogeneous catalysis using core–shell nanoreactors: Application to rhodium-catalyzed hydroformylation of 1-octene
High catalytic activity (turnover frequencies up to 700 h) was achieved using new triphenylphosphinefunctionalized core cross-linked micelles, TPP@CCM, as nanoreactors and [Rh(acac)(CO)2] as catalyst precursor for the aqueous biphasic hydroformylation of 1-octene. While the hydrophobic core of the polymer offers an adequate environment for the catalytic reaction, its hydrophilic shell confines ...
متن کاملInvestigation of Photo–Fenton–Like Process Efficiency in Diazinon Pesticide Removal from Aqueous Solutions
Diazinon pesticide and its metabolites have been identified in aquatic systems worldwide. It was related to toxicity for aquatic organisms, animals, and humans. Waters contaminated with such persistent insecticides should be treated with suitable treatment processes. In this research, Diazinon removal from aqueous solutions by the photo–Fenton–like process (UV/H2O2/Fe...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
international journal of environmental researchناشر: university of tehran
ISSN 1735-6865
دوره 5
شماره 1 2010
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023