http://nopr.niscpr.res.in/handle/123456789/13920 2026-10-20T22:10:52Z 2026-10-20T22:10:52Z Thankappan, Rema Ramanujam, Ramamoorthy Alwar http://nopr.niscpr.res.in/handle/123456789/13995 2016-07-20T05:21:00Z 2012-05-01T00:00:00Z

Title: Decomposition of aromatic sulphonic acid syntan in aqueous solution using ozone Authors: Thankappan, Rema; Ramanujam, Ramamoorthy Alwar Abstract: This study examines degradation of syntan (synthetic tannin) using ozonation process. Ozonation of syntan (initial conc.100 mg/l; ozone dose, 1 g/h) showed removal of COD (91%), tannin (98%) and UV absorbance (99%) at pH 7. A significant BOD5/COD ratio variation (0.21-0.29) at pH 7 confirmed that ozonation is an effective Page(s): 363-368

2012-05-01T00:00:00Z Sharma, S K Saxena, M Saud, T Korpole, S Mandal, T K http://nopr.niscpr.res.in/handle/123456789/13994 2016-07-20T05:20:01Z 2012-05-01T00:00:00Z

Title: Measurement of NH₃, NO, NO₂ and related particulates at urban sites of Indo Gangetic Plain (IGP) of India Authors: Sharma, S K; Saxena, M; Saud, T; Korpole, S; Mandal, T K Abstract: This study presents variability and concentration of ambient NH₃, NO and NO₂ along with particulate matter (PM₁₀) at urban sites of Chandigarh and Delhi of IGP of India (Dec 2010 - Mar 2011). Concentration of NH₃ was found as follows: Chandigarh, 0.72 - 22.81 (av 5.17 ± 0.92 μg m^-3); and Delhi, av 8.54 ± 0.72 μg m^-3. Concentration of ambient NO (av 13.13 ± 1.50 μg m^-3) and NO₂ (av 5.92 ± 0.38 μg m^-3) were recorded over Chandigarh. NH₄ + concentration were found as follows: Chandigarh, 2.60 - 4.39 (av 3.41 ± 0.78 μg m^-3); and Delhi, 6.61 - 14.6 (av 9.91 ± 3.77 μg m^-3). Concentration of NH₃ was significantly correlated with NH₄ + at both of the locations (<i>r²</i>= 0.87 and <i>r² </i>= 0.96). NH₃/ NH₄ + ratios were: Delhi, 0.59 - 1.75 (av 0.86); and Chandigarh, 0.28 - 5.19. A good correlation of SO₄ ^2- and NO₃ ^- with NH₄ ⁺ over Delhi indicates formation of aerosol. Similar correlations were recorded over Chandigarh. Page(s): 360-362

2012-05-01T00:00:00Z Jabasingh, S Anuradha Nachiyar, C Valli http://nopr.niscpr.res.in/handle/123456789/13993 2016-07-20T05:19:08Z 2012-05-01T00:00:00Z

Title: Optimization of cellulase synthesis by RSM and evaluation of ethanol production from enzymatically hydrolyzed sugarcane bagasse using <i>Saccharomyces cerevisiae</i> Authors: Jabasingh, S Anuradha; Nachiyar, C Valli Abstract: This study presents ethanol production from enzymatically hydrolyzed sugarcane bagasse using <i>Saccharomyces cerevisiae</i>.Response surface methodology (RSM) was used to optimize conditions for the production of endo b-1, 4 glucanase component of cellulase using <i>Aspergillus nidulans </i>MTCC344 under solid state condition, employing pretreated bagasse as chief substrate. Cellulase thus produced was utilized for hydrolyses of pretreated bagasse resulting in soluble sugars. FTIR and XRD of bagasse showed structural changes through pretreatment, in favor of enzymatic hydrolysis during cellulase production. Ethanol produced was found to be strongly dependent on pretreatment given, hydrolysis and fermentation conditions. Page(s): 353-359

2012-05-01T00:00:00Z Pant, Megha Dubey, Saurabh Raza, S K Patanjali, P K http://nopr.niscpr.res.in/handle/123456789/13992 2016-07-20T05:18:16Z 2012-05-01T00:00:00Z

Title: Encapsulation of neem and karanja oil mixture for synergistic as well as larvicidal activity for mosquito control Authors: Pant, Megha; Dubey, Saurabh; Raza, S K; Patanjali, P K Abstract: This study presents larvicidal effect of neem (<i>Azadirachta indica</i>) and karanja (<i>Pongamia glabra</i>) oil encapsulated calcium alginate beads (individuals and combination) against mosquito species (<i>Aedes aegypti</i>). Studies were conducted by combining these two oils with and without converting into alginate based encapsulation formulation. Combination (30% neem oil and 70% karanja oil) was found to be more effective then any other combination. The combination of neem and karanja oil recorded an LC₅₀of 3.1 g/l against <i>A. aegypti</i>. Mortality also increases in terms of concentration of active ingredients (20-77%) after 48 h. FTIR studies indicate that there is no chemical interaction between oils or oil and polymer. Page(s): 348-352

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