http://nopr.niscair.res.in/handle/123456789/4775 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/4960 Title: Comparative evaluation of natural adsorbent for pollutants removal from distillery spent wash <br/> <br/>Authors: Tewari, Namita; Verma, V K; Rai, J P N <br/> <br/>Abstract: Adsorption capacity of three different adsorbents (activated charcoal, fly ash and wood ash) has been tested and compared for the removal of various pollutants and heavy metals from distillery-spent wash. Adsorption was brought about at polyhouse conditions and the changes in pH, colour, COD, TS, TDS, TSS, Ca, Mg, Na, K and heavy metals (Cu, Zn, Fe) of distillery effluent using various adsorbents has been examined. Activated charcoal was found to be best adsorbent followed by fly ash and wood ash. <br/> <br/>Page(s): 935-938 http://nopr.niscair.res.in/handle/123456789/4959 Title: Flow characteristics of an annular gas turbine combustor model for reacting flows using CFD <br/> <br/>Authors: Singh, S N; Seshadri, V; Singh, R K; Mishra, T <br/> <br/>Abstract: Computational Fluid Dynamics (CFD) approach can reduce the expenses as well as time to provide an insight into the characteristics of flow and combustion process inside combustion chamber at design stage. Geometry of combustor simulated for present investigation is a 45° sector of an annular combustor. Primary, secondary and dilution holes are simulated on the inner and outer liner walls with swirler being placed at the center of the liner dome. Flow has been analyzed in the annulus region. The results are fed as input for the flow analysis in the liner. Uniform velocity distribution is obtained in the annulus passage around the liner. For the liner flow, it is observed that on moving axially from nozzle to outlet, velocity and temperature contours become more uniform and symmetric in circumferential plane. Mass fraction of CH₄ and O₂ decreases whereas concentration of CO₂, NO and H₂O increases in the axial direction (nozzle to outlet). <br/> <br/>Page(s): 921-934 http://nopr.niscair.res.in/handle/123456789/4958 Title: Pharmacognostic evaluation of <i style="">Curcuma haritha </i>Linn <br/> <br/>Authors: Srivastava, Sharad; Srivastava, Sanjay; Chitranshi, Nitin; Dan, Mathew; Rawat, A K S; Pushpangadan, Palpu <br/> <br/>Abstract: <i style="">Curcuma haritha</i> Linn (Family: <i style="">Zingiberaceae</i>), a lesser-known medicinal zingiber, is wildly distributed in Kerala. It is common throughout the costal regions and grows along with <i style="">C. caesia</i> and <i style="">C. raktakanta</i>, but is rarely found in high altitude grasslands. It is closely related to <i style="">C. aromatica</i>, but differs in the yellowish-grey, non-aromatic rhizome, leathery, semipilicate, erect leaves, white corolla and yellow tip with a median dark yellow band. It also resembles <i style="">C. raktakanta</i> but differs from it in having green puesdostem with light pink spots, white corolla lobes and swollen placenta. A paste of rhizome is useful externally for cuts, wounds, itching and in sprains. Pharmacognostic evaluation of its rhizome showed: total ash, 7.4; acid insoluble ash, 1.5; alcohol soluble extractives, 8.50; water soluble extractives, 19.50; sugar, 5.11; starch, 42.88 and tannins, 1.78%. On hydro distillation, rhizomes and sessile tubers yield oil (0.58%). <br/> <br/>Page(s): 916-920 http://nopr.niscair.res.in/handle/123456789/4957 Title: Design of pilot plant for the production of essential oil from <i style="">Eucalyptus</i> leaves <br/> <br/>Authors: Okonkwo, E M; Odigure, J O; Ugwu, J O; Mu’azu, K; Williams, I S; Nwobi, B E; Okorie, F K; Oriah, V N <br/> <br/>Abstract: Study presents design, construction and test run of a pilot plant for the production of essential oils (0.864 l/h) from <i style="">Eucalyptus</i> leaves. Analysis shows that the rate at which steam passes through the leaf bed may deviate from linear relationship to curve depending on the loading capacity. An oil/leave production rate of 3.0x10^-2ml/g was obtained. In designing pilot plant, tank still has a dimension of 0.45 m diam and length of 1.65 m. Packed bed height was 0.565 m with an expected pressure head loss of 0.013 m. Overall heat transfer coefficient was calculated as 176.12W/m² °C. The condenser has a heat load of 4970 kJ/s requiring a cooling water flow rate of 0.047 kg/sec. <br/> <br/>Page(s): 912-915