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Bhīlwāra, India

Surana M.,Mewar University | Mehta P.,ITM | Pamecha K.,Mlvgovt College | Kabra B.V.,Mlvgovt College
Der Pharma Chemica | Year: 2011

At present work, aqueous solutions of azo dye Reactive yellow 86 (RY86) were treated with Fenton reagent. The efficiency of treatment was evaluated by color alteration and mineralization of the dye. A detailed investigation of photodegradation of Reactive Yellow 86 using H 2O 2/Fe 2+ has been carried out. The reduction of color was determined by UV-VIS spectrophotometer and the results showed that the dye rapidly lost the color while the doses were increased. Results indicate that dye degradation is dependent on concentration of Dye (RY86), photocatalyst (Fenton reagent), H 2O 2 and pH of the experimental solutions. The optimum conditions for the photobleaching of dye had been established. The kinetics of degradation of the dye in the dilute aqueous solutions follows first order kinetics. The results indicated that the treatment of the dye by Photo-Fenton reagent was efficient at optimum conditions. Source


Jain S.,Mlvgovt College | Khandelwal R.K.,Mlvgovt College
Research Journal of Chemistry and Environment | Year: 2011

The photo catalytic degradation of red HE8B dye was studied using TiO 2 as semiconductor. Visible light was used as the source of energy. The effects of various parameters like amount of semiconductor, pH, dye concentration etc. on the photo degradation were investigated. Source


Meena P.L.,Mls University | Kumar N.,Mls University | Meena A.S.,Mls University | Meena K.S.,Mlvgovt College | Jain P.K.,Mlvgovt College
Bulgarian Chemical Communications | Year: 2013

A term is a particular energy state and term symbol is a label to an energy state. Russell-Saunders (L-S) coupling and j-j coupling schemes are important schemes to determine the terms and to assign the term symbols. In this proposed work computation is done to calculate all possible microstates and atomic spectroscopic terms for f2 and f12 configuration without any long tabulation with mental exercise and a comparative study was carried out between the atomic spectroscopic terms for f2 and f12 orbital configuration. The possible microstates and atomic spectroscopic terms calculated for f2 and f12 orbital configuration are 91 and 7 for each. These terms are triplets (3) and singlet's (4).The ground state term for f2 and f12 configuration is triplet H ( 3H) and the ground state for f2 is 3H 4 and for f12is 3H6. © 2013 Bulgarian Academy of Sciences, Union of Chemists in Bulgaria. Source

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