Babasaheb Bhimrao Ambedkar University

www.bbau.ac.in
Rae Bareli, India

Babasaheb Bhimrao Ambedkar University is a Central University in Lucknow, Uttar Pradesh. The university is named after Babasaheb Bhimrao Ambedkar, the architect of the Indian Constitution. Being one of the youngest central universities, the university aims to promote advance knowledge by providing higher standards of instructional and research facilities.==Schools==physical scienceSchool for Ambedkar Studies School for Information Science & Technology School for Environmental scienceSchool for Education School for Bio-science & Bio-technology School for Legal Studies School for Physical scienceSchool for Engineering and TechnologySchool for Management Wikipedia.

SEARCH FILTERS
Time filter
Source Type

Pandey G.,Babasaheb Bhimrao Ambedkar University | Dixit S.,Gwalior Institute of Information Technology
Journal of Physical Chemistry C | Year: 2011

CdS nanocrystalline materials have been prepared by reaction of Cd(II) ions with an alkaline solution of thiocarbamide in the aqueous solution phase. The effect of reaction time and surfactants (cetyltrimethyl ammonium bromide (CTAB), sodium dodecyl sulfate (SDS)) on morphology and size of the products has been investigated. Dramatic shape and size variations have been observed by varying the surfactant and reaction time. CdS nanocrystals formed in various reactions were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and transmission electron microscopy (TEM) to determine the crystallinity, phase, composition, size, and morphology. The optical properties of the thus prepared samples were determined by UV-vis absorption spectra. A possible formation mechanism of CdS nanocrystals has also been discussed in this article. © 2011 American Chemical Society.


Panwar N.L.,Maharana Pratap University of Agriculture and Technology | Kothari R.,Babasaheb Bhimrao Ambedkar University | Tyagi V.V.,University of Malaya
Renewable and Sustainable Energy Reviews | Year: 2012

Biomass is indirect source of solar energy and it is renewable in nature. It is one of the most important energy source in near future because of its extensive spread availability and promising potential to reduce global warming. Thermo chemical conversion of biomass yield variety of solid, liquid and gaseous fuels and have equal importance both at industrial and ecological point of views. Present review gives holistic view of various thermo-chemical conversion route of biomass. Gasification technology, pyrolysis options and scope of potential by product from there routes like hydrogen and charcoal production comprehensively reviewed with present context. © 2012 Elsevier Ltd. All rights reserved.


Pandey V.C.,Babasaheb Bhimrao Ambedkar University
Ecotoxicology and Environmental Safety | Year: 2012

Abundance of naturally growing Azolla caroliniana (water fern) on the surface of metal enriched fly ash (FA) pond reflects its toxitolerant characteristics. Results indicate the efficiency of A. caroliniana for phytoremediation of FA pond because of its higher bioconcentration factor. The metal concentration ranged from 175 to 538 and 86 to 753mgkg-1 in roots and fronds, respectively. Bioconcentration factor (BCF) values of all metals in root and frond ranged from 1.7 to18.6 and 1.8 to 11.0, respectively, which were greater than one and indicates the metal accumulation potential of A. caroliniana. Translocation factor (TF) ranged from 0.37 to 1.4 for various heavy metals. The field result proved that A. caroliniana is a potential accumulator for the examined heavy metals and can be used for phytoremediation of FA pond. © 2012 Elsevier Inc.


Abhilash P.C.,Babasaheb Bhimrao Ambedkar University | Yunus M.,Babasaheb Bhimrao Ambedkar University
Biomass and Bioenergy | Year: 2011

The present article briefly describe the concerns regarding the use of biomass derived from phytoremediation of heavy metal contaminated sites. © 2010 Elsevier Ltd.


Singh J.S.,Babasaheb Bhimrao Ambedkar University
Agriculture, Ecosystems and Environment | Year: 2015

The indiscriminate application of synthetic chemicals in agriculture has deteriorated extremely the quality of environment due to loss of beneficial microbial communities. The world now has a real prospect to grow sustainably and eliminate acute food scarcity in the next generation. Achieving this will require eco-friendly and safe technology for restoration of degraded lands. Microbes form the vital living components of soils contributing ecosystem sustainability due to their cosmopolitan survival, massive efficient genetic pool, catabolic versatility and stress tolerance potential. It has been reported that direct application of modified microbes enhances the microbial diversity in the agro-ecosystems by breaking dormancy of inactive soil microbial pool. It is presumed that enhanced diversity of efficient microbial community compositions in degraded ecosystems establish a functional equilibrium, which help maintain sustainability. Undoubtedly therefore, microbes may play the role of chief ecological engineers in resolving the environmental problems as well as the innovative tool to reinstate the degraded ecosystems. © 2015 Elsevier B.V.


Dixit S.,Babasaheb Bhimrao Ambedkar University
International journal of phytoremediation | Year: 2013

The present study reports the influence of different factors on the sorption of Pb and Cd by Nostoc muscorum. The results showed that extent of Pb and Cd removal by N. muscorum cells increased with increasing biosorbent dose, but exhibited decline in the adsorption capacity. The maximum sorption of Cd (85.2%) and Pb (93.3%) was achieved at 60 and 80 microg/ml concentrations of respective metal, within 30 and 15 min, respectively. The result revealed that optimum biosorption of Pb and Cd occurred at pH 5 and 6, respectively, at 40 degrees C temperature. Presence of binary metals (both Pb and Cd) in a solution showed that the presence of one metal ion resulted into decreased sorption of other metal ion. The presence of Ca and EDTA showed significant decrease in the sorption of Pb and Cd, while other anions and cations did not show significant effect on the biosorption of both the metals. Maximum desorption of Pb and Cd was achieved in the presence of EDTA and HNO3, respectively. Results also showed that the test biosorbent could be repeatedly used up to six biosorption/desorption cycles without significant loss of its initial metal adsorption capacity.


Bhadauria B.S.,Babasaheb Bhimrao Ambedkar University
Transport in Porous Media | Year: 2012

In the present study, double-diffusive convection in an anisotropic porous layer with an internal heat source, heated and salted from below, has been investigated. The generalized Darcy model is employed for the momentum equation. The fluid and solid phases are considered to be in equilibrium. Linear and nonlinear stability analyses have been performed. For linear theory normal mode technique has been used, while nonlinear analysis is based on a minimal representation of truncated Fourier series. Heat and mass transfers across the porous layer have been obtained in terms of Nusselt number Nu and Sherwood number Sh, respectively. The effects of internal Rayleigh number, anisotropy parameters, concentration Rayleigh number, and Vadasz number on stationary, oscillatory, and weak nonlinear convection are shown graphically. The transient behaviors of Nusselt number and Sherwood number have been investigated by solving the finite amplitude equations using a numerical method. Streamlines, isotherms, and isohalines are drawn for both steady and unsteady (time-dependent) cases. The results obtained, during the above analyses, have been presented graphically, and the effects of various parameters on heat and mass transfers have been discussed. © 2011 Springer Science+Business Media B.V.


Singh J.S.,Babasaheb Bhimrao Ambedkar University | Pandey V.C.,Babasaheb Bhimrao Ambedkar University
Ecotoxicology and Environmental Safety | Year: 2013

There are reports that the application of fly ash, compost and press mud or a combination thereof, improves plant growth, soil microbial communities etc. Also, fly ash in combination with farmyard manure or other organic amendments improves soil physico-chemical characteristics, rice yield and microbial processes in paddy fields. However, the knowledge about the impact of fly ash inputs alone or in combination with other organic amendments on soil methanotrophs number in paddy soils is almost lacking. We hypothesized that fly ash application at lower doses in paddy agriculture soil could be a potential amendment to elevate the paddy yields and methanotrophs number. Here we demonstrate the impact of fly ash and press mud inputs on number of methanotrophs, antioxidants, antioxidative enzymatic activities and paddy yields at agriculture farm. The impact of amendments was significant for methanotrophs number, heavy metal concentration, antioxidant contents, antioxidant enzymatic activities and paddy yields. A negative correlation was existed between higher doses of fly ash-treatments and methanotrophs number (R2=0.833). The content of antioxidants and enzymatic activities in leaves of higher doses fly ash-treated rice plants increased in response to stresses due to heavy metal toxicity, which was negatively correlated with rice grain yield (R2=0.944) and paddy straw yield (R2=0.934). A positive correlation was noted between heavy metals concentrations and different antioxidant and enzymatic activities across different fly ash treated plots. The data of this study indicate that heavy metal toxicity of fly ash may cause oxidative stress in the paddy crop and the antioxidants and related enzymes could play a defensive role against phytotoxic damages. We concluded that fly ash at lower doses with press mud seems to offer the potential amendments to improving soil methanotrophs population and paddy crop yields for the nutrient poor agriculture soils. © 2012 Elsevier Inc.


Pandey V.C.,Babasaheb Bhimrao Ambedkar University
Ecological Engineering | Year: 2013

An increasing area of fly ash (FA) disposal and its toxicity have become a global concern due to the proliferation of coal-fired power plants, which contaminate the ecosystems of our earth. In this regard, many plants are suggested for phytoremediation of FA disposal sites, but there is a dearth of studies regarding commercial crop-based phytoremediation having a range of economic and ecological services. Therefore, the present investigation was focused to examine phytoremediation potential of naturally grown industrial crop Ricinus communis L. on FA polluted sites. The bioconcentration factor value of all metals in the root of R. communis L. was greater than 1 which indicates the metal accumulation potential of this crop. Translocation factor value of all the metals was found less than 1, which shows that these metals are stabilized in the root part of the plant. Furthermore, being industrial oil yielding crop and unpalatable, R. communis L. is a potential candidate for FA phytoremediation along with its economic and ecological values. Thus, R. communis L. can be used as a commercial crop for phytostabilization and revegetation of FA disposal sites in tropical and sub-tropical region. Besides the stabilization of heavy metals, FA revegetation provides other hidden benefits such as carbon sequestration, substrate quality enhancement, esthetically pleasant landscape, multipurpose oilseed production and biodiversity conservation. © 2013 Elsevier B.V.


Pandey V.C.,Babasaheb Bhimrao Ambedkar University
Journal of Geochemical Exploration | Year: 2012

The present investigation was focused to examine the phytoremediation potential of naturally grown Ipomoea carnea on fly ash (FA) deposits. I. carnea is an invasive species and mostly neglected by people but it has unusual characteristics which deals to phytoremediation. The metal accumulation of Cd, Pb, Cu, Cr, Mn and Ni ranged from 5.3 to 39.7, 7.4 to 30.6, 19.9 to 32.5, 9.5 to 20.6, 19.0 to 90.1, and 13.7 to 68.2μgg-1, respectively, in all the parts of I. carnea grown on barren FA deposits during two periods (pre- and post-monsoon). The bioconcentration factor (BCF) values of Cd, Pb, Mn, and Ni in root and stem were greater than 1 during both periods which indicates the metal accumulation potential of I. carnea. There is a dearth of study recommending the safe and effective green technology for the phytoremediation of FA dumps. In this regards, I. carnea was identified as an effective plant for phytoremediation in harsh environmental conditions of abandoned FA deposits. © 2012 Elsevier B.V.

Loading Babasaheb Bhimrao Ambedkar University collaborators
Loading Babasaheb Bhimrao Ambedkar University collaborators