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University of Agricultural Sciences, Bengaluru

University of Agricultural Sciences Bangalore, a premier institution of agricultural education and research in the country, began as a small agricultural research farm in 1899 on 30 acres of land donated by Her Excellency Maharani Kempa Nanjammanni Vani Vilasa Sannidhiyavaru, the Regent of Mysore and appointed Dr. Lehmann, German Scientist to initiate research on soil crop response with a Laboratory in the Directorate of Agriculture. Later under the initiative of the Dewan of Mysore Sir M. Vishweshwaraiah, the Mysore Agriculture Residential School was established in 1913 at Hebbal which offered Licentiate in Agriculture and later offered a diploma programme in agriculture during 1920. The School was upgraded to Agriculture Collegein 1946 which offered four year degree programs in Agriculture. The Government of Mysore headed by Sri. S. Nijalingappa, the then Chief Minister, established the University of Agricultural Sciences on the pattern of Land Grant College system of USA and the University of Agricultural Sciences Act No. 22 was passed in Legislative Assembly in 1963. Dr. Zakir Hussain, the Vice President of India inaugurated the University on 21st August 1964.

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Subject: Forestry × Author: NEELIMA, HOODA × End date: 2017 × Start date: 2012 ×
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    ThesisItemOpen Access
    STUDIES ON UTILIZATION OF BY- PRODUCTS OF BIODIESEL FOR BIOGAS PRODUCTION
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-08-01) NEELIMA, HOODA; Prasanna, K. T
    Biogas is generated from the anaerobic digestion of organic wastes and is rapidly emerging means for providing continuous energy generation. A large amount of nonedible oil cakes and glycerine is produced as by-products of biodiesel production that can be used as substrates for biogas production. This study presents the summary of results obtained in anaerobic digestion of pongamia oil cake, pongamia deoiled cake and glycerine with different proportions of cow dung for 75 days. The study revealed that the pH recorded in cow dung slurry was 7.2, pongamia oil cake slurry 5.9, pongamia deoiled cake slurry 6.6 and glycerine 8.5 suggesting significant differences in pH among the biogas substrates used. After 75 days of anaerobic digestion, a decrease was recorded the pH of treatments in which glycerine was in major proportions while in treatments without glycerine, a increase in pH was observed. However, no significant changes in EC were recorded in different treatments during the period of study. Increase in N, P and K content of biogas spent slurry was recorded after anaerobic digestion. A significant decline was observed in organic matter content, volatile solids and C:N ratio at the end of the experiment. Highest decline in C:N ratio was recorded in T4 with 9:1 cow dung and glycerine 75 days after anaerobic digestion. The cumulative biogas production after 75 days was significant only in T4 with 9:1 cow dung and glycerine. This suggests that optimum amount of glycerine could enhance biogas production manyfolds but excess glycerine can lead to accumulation of volatile fatty acids, lowering pH of the slurry and affecting biogas production potential.