School Of Environment And Earth Sciences

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Has files: YesSubject: search.filters.subject.Cotton

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    To study the effect of BT (Bacillus thruingiensis) cotton cultivation on soil health
    (Central University of Punjab, 2012) Kumari, Manohari; Mittal, Sunil
    The impact of transgenic Bacillus thruingiensis (Bt) cotton cultivation on soil enzymes and physico-chemical parameters of soil were investigated. Soil samples were collected from surface (0-20 cm depth) of agricultural fields near Bathinda, District. Where Bt cotton (RHC134) and non Bt cotton variety had been continuously cultivated for last two years. Soil samples were collected after harvesting of cotton crop. A control sample was collected from the adjoining waste land where no crop was grown from last many years. To observe effect of Bt cotton on soil biochemical properties, activities of soil enzymes such as amylase, cellulase, urease, dehydrogenase, alkaline phosphatase and acid phosphatase were assayed. Statistically significant enhancement in activities of the above enzyme was observed in Bt cotton soil samples as compared to non Bt cotton soil samples. No difference was observed in cellulase activity between Bt and non Bt cotton soil samples. Further, to study the effect of Bt cotton on physico-chemical properties, pH, conductivity, texture, total organic carbon (%) and organic matter (%), available nitrogen and available phosphorous content were estimated. In conclusion, significant changes were observed in Bt cotton grown soil samples.
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    Effect of organic loading rate on electricity generating potential of upflow anaerobic microbial fuel cell treating surgical cotton industry wastewater
    (Elsevier Ltd, 2017) Tamilarasan, K.; Banu, J.R.; Jayashree, C.; Yogalakshmi, K.N.; Gokulakrishnan, K.
    In this study, the performance of continuous fed upflow anaerobic microbial fuel cell operated with surgical cotton industry wastewater was investigated at different Organic Loading Rate (OLR). The potency of power generation, COD and TSS removal efficiency was determined. The highest TCOD and SCOD removal of 78.8% and 69%, respectively was accomplished at an optimum OLR of 1.9 gCOD/L d. A 62% TSS removal efficiency was obtained, with an initial TSS concentration of wastewater as 970 ? 70 mg/L. The maximum power density 116.03 mW/m2 (2.2 W/m3) and corresponding coulombic efficiency of 17.8% was achieved at the OLR of 1.9 gCOD/L/d while treating surgical cotton industry waste water. ? 2017 Elsevier Ltd.