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Ajmer, India

Maharshi Dayanand Saraswati University is a university in Ajmer, Rajasthan, India. It opened in 1987 and is named after the philosopher Maharshi Dayananda Saraswati. Wikipedia.

Bhatnagar A.,University of Georgia | Bhatnagar M.,Maharshi Dayanand Saraswati University | Chinnasamy S.,University of Georgia | Das K.C.,University of Georgia
Applied Biochemistry and Biotechnology | Year: 2010

It is imperative to slash the cost of algal oil to less than $50 bbL -1 for successful algal biofuel production. Use of municipal wastewater for algal cultivation could obviate the need for freshwater and the nutrients - N and P. It would also add CO2 through bacterial activity. Chlorella minutissima Fott et Nova dominated the entire phycoflora year around and through each stage of the wastewater treatment at the oxidation pond system of Wazirabad (Delhi) in India. The ability to grow so profusely in such varied and contrasting situations made this alga unique. Besides pollution tolerance, it grew heterotrophically in dark under acidic conditions and as a mixotroph in presence of light over a range of organic C substrates. It could utilize both ammoniacal and nitrate nitrogen, survived anaerobicity, 5% NaCl and ?10 bar of osmotic stress. C. minutissima grew at pH 4-11 and raised the pH set initially by 1 to 3 units in 7.5 h. It showed gigantism and largely kept afloat in presence of utilizable organic carbon, while flocculated in mineral medium and on aging. The alga also possessed potential for biofuel production. The studied parameters indicate why C. minutissima was a potential biomass builder in municipal sewage and could be used to determine which other alga(e) may serve the purpose. © Humana Press 2009.

Bhatnagar A.,Maharshi Dayanand Saraswati University | Chinnasamy S.,University of Georgia | Singh M.,University of Georgia | Das K.C.,University of Georgia
Applied Energy | Year: 2011

This study evaluated mixotrophic growth potential of native microalgae in media supplemented with different organic carbon substrates and wastewaters. Three robust mixotrophic microalgae viz. Chlamydomonas globosa, Chlorella minutissima and Scenedesmus bijuga were isolated after long-term enrichments from industrial wastewater. The mixotrophic growth of these microalgae resulted in 3-10 times more biomass production relative to phototrophy. Glucose, sucrose and acetate supported significant mixotrophic growth. Poultry litter extract (PLE) as growth medium recorded up to 180% more biomass growth compared to standard growth medium BG11, while treated and untreated carpet industry wastewaters also supported higher biomass, compared to BG11 growth with no significant effect of additional nitrogen supplementation. Supplementing treated wastewater and PLE with glucose and nitrogen resulted in 2-7 times increase in biomass relative to the unamended wastewaters or PLE. The consortia of Chlamydomonas-Chlorella and Scenedesmus-Chlorella were the best for PLE and untreated wastewater respectively, while a combination all three strains was suitable for both PLE and wastewater. These algae can be good candidates for biofuel feedstock generation as they would not require freshwater or fertilizers. Such mixotrophic algal consortia offer great promise for production of renewable biomass for bioenergy applications using wastewaters. © 2010.

The inhibitive action of leaves (LV), Latex (LX) and Fruit (FT) extracts of Calotrpis procera and Calotropis gigantea on mild steel corrosion in HCl, H2SO4 and mixture of solutions have been studied using mass loss and thermometric technique at different temperatures. The results indicate that the ethanolic extracts functioned as a good corrosion inhibitor in both environments and inhibition efficiency increased with extracts concentration. A mechanism of chemical adsorption of the plants components on the surface of the metal is proposed for the inhibition behavior. The inhibition efficiency increases up to 86.37%. © 2016, Pleiades Publishing, Ltd.

Bajia S.C.,Maharshi Dayanand Saraswati University
Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry | Year: 2011

Tris(O,O'-ditolyl/dibenzyl/diphenyldithiophosphato)cobalt(III) complexes (1-5) were synthesized by the reaction of CoCl2·6H 2O and NH4S2P(OR)2. Initially, the bis(O,O'-ditolyl/dibenzyl/diphenyldithiophosphato)cobalt(II) complexes were formed, oxidized to their analogous tris complexes. In this study, oxidation rate of individual dithiophosphate ligand were investigated on the basis of physical changes. Cobalt(III) complexes (1-5) were characterized by elemental analyses, conductivity measurement, TGA/DSC, and spectroscopic techniques (infrared [IR], ultraviolet [UV]-visible, 1H-, 13C-, and 31P-NMR, mass). The experimental results suggest that these complexes have distorted octahedral geometry with bidentate chelation dithiophosphate moieties. Molecular weight determinations of these complexes indicate their monomeric nature. Copyright © Taylor &Francis Group, LLC.

Chinnasamy S.,University of Georgia | Bhatnagar A.,University of Georgia | Bhatnagar A.,Maharshi Dayanand Saraswati University | Hunt R.W.,University of Georgia | Das K.C.,University of Georgia
Bioresource Technology | Year: 2010

Industrial and municipal wastewaters are potential resources for production of microalgae biofuels. Dalton - the Carpet Capital of the World generates 100-115 million L of wastewater d-1. A study was conducted using a wastewater containing 85-90% carpet industry effluents with 10-15% municipal sewage, to evaluate the feasibility of algal biomass and biodiesel production. Native algal strains were isolated from carpet wastewater. Preliminary growth studies indicated both fresh water and marine algae showed good growth in wastewaters. A consortium of 15 native algal isolates showed >96% nutrient removal in treated wastewater. Biomass production potential and lipid content of this consortium cultivated in treated wastewater were ∼9.2-17.8 tons ha-1 year-1 and 6.82%, respectively. About 63.9% of algal oil obtained from the consortium could be converted into biodiesel. However further studies on anaerobic digestion and thermochemical liquefaction are required to make this consortium approach economically viable for producing algae biofuels.

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