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Jeyanthi Rebecca, L.
- Removal of Hexavalent Chromium from Tannery Effluent Using Algal Extracts-A New Approach
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1 Dept. of Industrial Biotechnology, Bharath University, Chennai, Tamil Nadu, IN
1 Dept. of Industrial Biotechnology, Bharath University, Chennai, Tamil Nadu, IN
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Nature Environment and Pollution Technology, Vol 16, No 1 (2017), Pagination: 265-268Abstract
Hexavalent chromium is one of the major pollutants released from the tanneries that have a direct effect on man and animals. In this study, seaweeds such as Centeroceras clavulatum, Enteromorpha flexuosa, Grateloupia lithophila, Enteromorpha intestinalis, and Ulva lactuca, were collected from Covelong, Chennai. Sargassum sp., Amphiroa sp., Ulva sp., and Hypnea sp. were collected from Kanyakumari and Chaetomorpha antennina was collected from Puducherry. Different solvents such as methanol, ethanol, water, benzene and chloroform were used for extraction. Then these extracts were used to treat tannery effluent. The reduction in hexavalent chromium was analysed and correlated with phytochemicals of algal extracts. Results revealed that Cr(VI) concentration was highly reduced by benzene extract of Hypnea sp. (95%).Keywords
Effluent, Seaweed Extract, Treatment, Cr(VI).Full Text
References
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- Xu, X.R., Li, H.B. and Gu, J.D. 2004. Reduction of hexavalent chromium by ascorbic acid in aqueous solutions. Chemosphere, 57: 609-613.
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- Removal of Lead(II) by Phyto-Inspired Iron Oxide Nanoparticles
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1 Department of Industrial Biotechnology, Bharath University, 173 Agaram Road, Selaiyur, Chennai-600 073, T. N., IN
1 Department of Industrial Biotechnology, Bharath University, 173 Agaram Road, Selaiyur, Chennai-600 073, T. N., IN
Source
Nature Environment and Pollution Technology, Vol 17, No 2 (2018), Pagination: 569-574Abstract
Heavy metals are toxic to the living bodies even though present in trace amounts. In this study, we have developed a simple approach for the biosynthesis of iron oxide nanoparticles (Fe3O4-NPs) using Trigonella foenum-graecum leaf extract and used it for possible removal of lead from aqueous solution and wastewater. SPR peak at 248 nm confirms the bioreduction and formation of Fe3O4-NPs. The shape and size of the nanoparticles were evaluated by SEM equipped with EDX, TEM, XRD. The particles were found crystalline and roughly spherical in shape with an average size range of 51.6- 215.7 nm. The possible biomolecules participated in the biosynthetic reaction which was confirmed by FTIR spectrum. These nanostructured particles were used for batch adsorption study for the removal of lead ions. The effects of various physical and chemical parameters like pH, contact time, adsorbent dosage and initial concentrations on the removal of heavy metals were studied on removal efficiency. The maximum lead(II) ions removal uptake was found 93±0.13% at pH 6.0 with 0.4g of these nanoparticles within 60 min of contact time. Desorption studies indicated that the regenerated nanoparticles retained its original metal adsorption efficiency. Results showed that these regenerable iron oxide nanoparticles can be used as nano-adsorbent for removal of heavy metals from environmental waste due to its high metal uptake capacity.Keywords
Trigonella foenum-graecum, Iron Oxide Nanoparticles, Lead, Adsorption.Full Text
References
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- Evaluation of Genetic Diversity among Ocimum sanctum
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1 Department of Industrial Biotechnology, BIHER, Selaiyur, Chennai-600073, IN
1 Department of Industrial Biotechnology, BIHER, Selaiyur, Chennai-600073, IN
Source
Research Journal of Pharmacy and Technology, Vol 12, No 6 (2019), Pagination: 2889-2894Abstract
In this study the evaluation of genetic diversity among Ocimum sanctum was undertaken. The method used to find variation among Ocimum sanctum was restriction fragment length polymorphism excluding blot hybridization. The Ocimum sanctum plants were taken from five different regions of Tamil Nadu - Chennai, Karaikudi, Kancheepuram, Vellore, Tanjavur and Puducherry. Along with whole plants the soil and water samples in the regions of the plant was also collected. DNA was isolated using CTAB protocol with ammonium acetate and ethanol precipitation. Then the DNA was quantified and restriction digested with EcoR1 and HindIII (double digested). Double digested Lambda DNA (EcoRI and Hind III) was used as marker and the samples along with marker were electrophoresed in 0.8% agarose gel at 80V and the bands were observed in UV trans illuminator. Based on observation of bands the plants from Karaikudi, Tanjavur, Kancheepuram and Puducherry may have been descended from Chennai plants and Vellore plant may have been descended from Karaikudi plant. There was sufficient variation to predict the migration pattern of the plant. And variation among water-hardness and pH and soil-N, P, K content and pH was also diverse. The measured soil and water characteristics may be few of the reasons for the variation among Ocimum sanctum around Tamil Nadu and Puducherry.Keywords
Ocimum sanctum, CTAB, DNA Extraction, Restriction Digestion, Nutrient of Soil And Hardness.
References
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- A Study on The Influence of Vermicompost on The Growth Parameters of Arachis hypogaea
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1 Department of Industrial Biotechnology, Bharath Institute of Higher Education and Research, Chennai-600073, IN
1 Department of Industrial Biotechnology, Bharath Institute of Higher Education and Research, Chennai-600073, IN
Source
Research Journal of Pharmacy and Technology, Vol 12, No 6 (2019), Pagination: 2895-2901Abstract
In nutrition a new era is emerging that is characterized by search for dietary constituents that have benefits beyond those described to the macro and micro-nutrients. The use of chemical fertilizers, contributes largely depletion of fossil fuels, generation of carbon dioxide and contamination of water resource it leads to loss of soil fertility due to imbalance use of fertilizers that has adversely impacted agriculture productivity and causes of soil degradation. Compositing has been recognized as a low cost and environmentally sound process for treatment of many organic wastes. Vermicompost is the type of compositing that was studied on the growth parameters of Ground Nut plant (Arachis hypogaea. L). Vermicompost is a product delivered from the accelerated biological degradation of the organic waste by earth worm and microorganisms. Vermicompost chemical composition contains especially nitrates, exchangeable phosphorous, soluble potassium, calcium and magnesium than that of growth media. The study was mainly aimed on the plant growth and biochemical composition on the seedlings that was grown in difference composition of the vermicompost such as [10%-100%]. The biochemical analysis and enzyme assay shows variations in different concentration.Keywords
Vermicompost, Arachis hypogaea, Fertilizers, Composting.References
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- Bioremediation of Nitrate Reduction Present in Leather Industries Effluent by using Marine Algae
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1 Department of Industrial Biotechnology, Bharath Institute of Higher Education and Research, 173, Agaram Main Road, Selaiyur, Chennai-600 0073, Tamil Nadu, IN
1 Department of Industrial Biotechnology, Bharath Institute of Higher Education and Research, 173, Agaram Main Road, Selaiyur, Chennai-600 0073, Tamil Nadu, IN
Source
Research Journal of Pharmacy and Technology, Vol 12, No 7 (2019), Pagination: 3522-3526Abstract
Nitrogen occurs naturally under oxidation of nitric anhydride, N2O5 and nitrates, NO3- and also from ammonia, and ammonium ions, NH4+. Because of increase in human activities environmental nitrate concentrations also increased which leads to introduction of large quantities of nitrates into ground and surface waters. Agriculture is the major source of nitrate pollution because of using of nitrogen-containing fertilizers, concentrated livestock and poultry farming. Nitrates are also released from the industrial production of glass, explosives, as well as from various chemical production and separation processes. Highest reduction in nitrate content was found in benzene extract of U.lactuca 91% and very minimal reduction of 12 % was found in aqueous extract of E.intestinalis. Among all, the extracts of Ulva lactuca, Enteromorpha flexuosa fell under Category A (Good reduction), and benzene was found to be the best solvent system. Maximum reduction by powdered algae was found in C.antenina collected from Covelong and Puduchery (375 mg/l).Keywords
Nitrate, Reduction, Bioremediation, Leather Effluent, Seaweed.References
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