Vasantrao Naik Mahavidyalaya

Aurangābād, India

Vasantrao Naik Mahavidyalaya

Aurangābād, India
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Farooqui M.,Post Graduate and Research Center | Ubale M.,Vasantrao Naik Mahavidyalaya
International Journal of ChemTech Research | Year: 2010

Paramagnetic oxidation of 4-hydroxy benzaldehyde has been investigated at 25°C using UV -Visible double beam spectrophotometer under acidic condition. The effect of variation of substrate, oxidant and H2SO4 was studied under pseudo first order reaction conditions. The order of reaction was found to be first order on oxidant, zero for substrate, and fractional order on [H2SO4]. The effect of salts such as KCl, KBr, KI, AlCl3, Al(NO3)3, Ca(NO3)2 and MgCl 2, etc. on oxidation of 4-hydroxy benzaldehyde was studied.


Chamargore J.J.,Vasantrao Naik Mahavidyalaya | Bharad J.V.,Vasantrao Naik Mahavidyalaya | Madje B.R.,Vasantrao Naik Mahavidyalaya | Ubale M.B.,Vasantrao Naik Mahavidyalaya
E-Journal of Chemistry | Year: 2010

Removal of color from aqueous solution by using low cost easily available adsorbent was conducted by batch experiment. The potential of the low cost adsorbent (Marble powder - treated and untreated) to remove methylene red from aqueous solution were assessed at room temperature. Laboratory investigation of the potential of marble powder and sulphuric acid treated marble powder to remove dye color from aqueous solution has been studied. Parameters studied included pH, adsorbent dose, initial dye concentration and contact time. The influence of these system variables were investigated to observe the effect on the rate of dye uptake. Sulphuric acid treated marble powder has shown better adsorptive capacity than untreated marble powder and thus it has become an interesting option for dye removal from industrial effluents.


Madje B.R.,Vasantrao Naik Mahavidyalaya | Ubale M.B.,Vasantrao Naik Mahavidyalaya | Bharad J.V.,Vasantrao Naik Mahavidyalaya | Shingare M.S.,Dr. Babasaheb Ambedkar Marathwada University
South African Journal of Chemistry | Year: 2010

A new and efficient method to synthesize a 3,3,6,6,9-aryl-1,8-dioxo- octahydroxanthene derivative using alum as catalyst was performed in aqueous media. This method has several advantages such as environmental friendliness, high yields and simple workup procedure.


Madje B.R.,Vasantrao Naik Mahavidyalaya | Shelke K.F.,Dr. Babasaheb Ambedkar Marathwada University | Sapkal S.B.,Dr. Babasaheb Ambedkar Marathwada University | Kakade G.K.,Dr. Babasaheb Ambedkar Marathwada University | Shingare M.S.,Dr. Babasaheb Ambedkar Marathwada University
Green Chemistry Letters and Reviews | Year: 2010

Alum (KAl(SO4)2 12H2O) performs as a novel catalyst for the synthesis of anthraquinone derivatives from phthalic anhydride and substituted benzenes in good to excellent yields (70 96%) using water as a solvent at ambient temperature. Several solvents were examined for this reaction; however, in terms of reaction yield and time, water was found to be the optimum solvent. The remarkable advantages offered by this method are an inexpensive and easily available catalyst, a simple procedure, mild conditions, and much faster (60 120 min) reactions. © 2010 Taylor & Francis.


Chaudhari V.,Yogeshwari Mahavidyalaya | Ubale M.,Vasantrao Naik Mahavidyalaya
Research Journal of Pharmaceutical, Biological and Chemical Sciences | Year: 2012

An isocratic reversed phase stability-indicating high-performance liquid chromatographic (HPLC) assay method was developed and validated for quantitative determination of Lovastatin in bulk drugs. An isocraticreversed phase HPLC method was developed to separate the drug from the degradation productsusing an Inertsil ODS C18 (250 x 4.6) mm5μ column and the mobile phase containing 2.0gm Sodium dihydrogen phosphate and 1.0 gm 1-octaneSulfonic acid salt in 1000ml waterfilter and mixed. Prepare a homogenous mixture of buffermethanol and acetonitrile (55:28:17v/v/v). The detection was carried out at wavelength 230 nm. The developed method was validated with respect to linearityaccuracy (recovery)precisionsystem suitabilityselectivityrobustness prove the stability indicating ability of the method.


Bharad J.V.,Vasantrao Naik Mahavidyalaya | Madje B.R.,Vasantrao Naik Mahavidyalaya | Ubale M.B.,Vasantrao Naik Mahavidyalaya
International Journal of ChemTech Research | Year: 2010

Kinetic investigations in Keggin-type phosphotungstic acid catalyzed oxidation of benzhydrol and p-substituted benzhydrols by N-bromophthalimide (NBP) in aqueous acetic acid medium in presence of mercuric (II) acetate as a scavenger have been studied. In absence of mineral acids, the oxidation kinetics of benzhydrols by NBP in presence of PTA (Phosphotungstic acid) shows a first order dependence on NBP and fractional order on benzhydrols and PTA. The variation of ionic strength, Hg(OAC)2 , H+ and phthalimide (reaction product) have insignificant effect on reaction rate. Activation parameters for the reaction have been evaluated from Arrhenius plot by studying the reaction at different temperature. A mechanism involving transfer of hydride ion in rate determining step is suggested.


Shelke R.,Pemraj Sarda College | Bharad J.,Vasantrao Naik Mahavidyalaya | Madje B.,Vasantrao Naik Mahavidyalaya | Ubale M.,Vasantrao Naik Mahavidyalaya
International Journal of ChemTech Research | Year: 2010

The plant powder of Nirgudi (L. Vitex negudo) were activated with sulphuric acid and used as low cost easily available and renewable biological adsorbent for the removal of acid dyes (Acid blue, Acid red and Malachite green) from aqueous solution. Batch experiments were carried out for adsorption kinetics and isotherms. Operating variable studied were pH, temperature, adsorbent dose, initial concentration of adsorbate. Adsorption capacity seems to be enhanced by increasing temperature, adsorbent dose and for pH. Maximum dye adsorption was found to be in acidic range. Nirgudi Leaf powder (NLP) treated with Sulphuric acid (H 2SO 4) solution increased the adsorption efficiency upto 80 percent. Experimental adsorption kinetic data were fitted to be Lagergren first order. Equilibrium data were well represented by the Freundlich Langmuir isotherm model for all tested adsorption systems. Beside these the thermodynamic study has showed that the acid dye adsorption onto the surface of Acid Activated Nirgudi Leaf powder (AANLP) was physical adsorption and the process was spontaneous and exothermic.


Bharad J.,Vasantrao Naik Mahavidyalaya | Madje B.,Vasantrao Naik Mahavidyalaya | Ubale M.,Vasantrao Naik Mahavidyalaya
International Journal of ChemTech Research | Year: 2010

Kinetic investigations of oxidation of 1-Phenylethanol by N-bromophthalimide (NBP) in aqueous acetic acid medium in presence of mercuric (II) acetate as a scavenger have been studied. In absence of mineral acids, the oxidation kinetics of 1-Phenylethanol by NBP shows a first order dependence on NBP and fractional order on 1- Phenylethanol. The variation of ionic strength, Hg(OAC) 2, H + and phthalimide (reaction product) have insignificant effect on reaction rate. Activation parameters for the reaction have been evaluated from Arrhenius plot by studying the reaction at different temperatures. A mechanism involving transfer of hydride ion in rate determining step is suggested.


Wahegaonkar Nilima K.,Vasantrao Naik Mahavidyalaya | Shirurkar Deepavali D.,Annasaheb Magar Mahavidyalaya
International Journal of Pharma and Bio Sciences | Year: 2013

Fifteen different plants used in traditional Indian medicine were examined against eight fungal species viz. Aspergillus flavus, Aspergillus niger, Aspergillus terreus, Aspergillus oryzae, Aspergillus fumigatus, Fusarium verticillioides (Synonym F. moniliforme), Fusarium solani and Penicillium sp. using the agar disc diffusion method. The alcoholic extracts of 15 plants exhibited varying degrees of inhibition activity against the above seed borne fungi. Seven of the 15 plants studied had antifungal activity against above listed fungi while the remaining had no antifungal activity. Extent of activity also differed with the part of the plant used.


Bharad J.V.,Vasantrao Naik Mahavidyalaya | Madje B.R.,Vasantrao Naik Mahavidyalaya | Ubale M.B.,Vasantrao Naik Mahavidyalaya
Oxidation Communications | Year: 2013

Kinetic investigations in the Keggin type phosphotungstic acid-catalysed oxidation of benzaldehyde and substituted benzaldehydes by N-bromophthalimide (NBP) in aqueous acetic acid medium in the presence of mercuric (II) acetate as a scavenger have been carried out. Oxidation kinetics of benzaldehyde by NBP in the presence of phosphotungstic acid (PTA) shows a first order dependence on NBP and fractional order on benzaldehydes and PTA . The variations of ionic strength, Hg(OAC)2 , H+ and phthalimide (reaction product) have insignificant effect on reaction rate. Activation parameters for the reaction have been evaluated from the Arrhenius plot by studying the reaction at different temperatures. The rate law has been derived on the basis of the obtained data.

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