Removal of reactive red 198 from aqueous solution by Ce(IV)
Publish place: Desalination of Brackish, Sea Water and Wastewater Treatment
Publish Year: 1391
نوع سند: مقاله کنفرانسی
زبان: English
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DESAL01_027
تاریخ نمایه سازی: 30 مرداد 1391
Abstract:
The textile dyeing industry consumes large quantities of water and produces large volumes of wastewater from different processes in dyeing and finishing processes. At present, rare earth application in wastewater treatment has become more and more widely, according to the fact that the Ce(IV) has the strong oxidation ability under acid condition, we have studied the application of Ce(IV) in dyeing industry wastewater treatment originally. Ce(IV) formed [Ce(OH)x·nH2O](4–x)+after hydrolyzation and Ce (III)obtained after Ce(IV) reduction formed [Ce(OH)x·nH2O](3–x)+ after hydrolyzation, these hydrate had big specific surface area, could absorb the reactive red dye 198 (RR198) from aqueous solution. Batch experiments were performed to investigate the effect of physico-chemical parameters, such as pH (pHoptimum<1), type of acid ( sulfuric acid, nitric acid and chloridric acid), dose of cerium sulfate (1.2 g/L), initial dye concentration (10-1000) based on contact time (90-600 sec). Equilibrium data were analyzed using Langmuir ,Freundlich and Temkin isotherm models, hence equilibrium data fitted well with the Langmuir isotherm model. The Ce(IV) was one kind of latent good water treatment chemical reagent.
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Authors
Roghieh Didehkhany
Department of Applied Chemistry, Karaj Branch, Islamic Azad University,
Elham Keshmirizadeh
Department of Applied Chemistry, Karaj Branch, Islamic Azad University,
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