http://nopr.niscair.res.in/handle/123456789/726 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/776 Title: Zinc adsorption kinetics by phosphogypsum — A preliminary study <br/> <br/>Authors: Balkaya, Nilgün; Cesur, Hasan <br/> <br/>Abstract: This study reports kinetics of zinc adsorption by phosphogypsum, which was conditioned with lime before batch adsorption. Pseudo-second-order equation was found more appropriate for Zn²⁺ adsorption than pseudo-first-order equation. <br/> <br/>Page(s): 254-256 http://nopr.niscair.res.in/handle/123456789/775 Title: Removal of cetyltrimethylammonium bromide and sodium dodecylether sulfate by granular activated carbon <br/> <br/>Authors: Kaya, Y; Gönder, Z B; Vergili, I; Barlas, H <br/> <br/>Abstract: Adsorption isotherms of sodium dodecylether sulfate (SLES) and cetyltrimethylammonium bromide (CTAB) onto granular activated carbon (GAC) at 25°C (aqueous solution) were experimentally determined by batch tests with respect to contact time, adsorbent amount and initial surfactant concentration. Close agreement of experimental data with Langmuir equilibrium model was observed. In Langmuir model, adsorptive capacity of CTAB was higher than that of SLES (Q° = 70.423 and 52.08 mgg⁻¹, respectively). L type isotherms were obtained that showed no strong competition among solvent molecules and surfactant molecules for the adsorption sites. <br/> <br/>Page(s): 249-253 http://nopr.niscair.res.in/handle/123456789/774 Title: Biofiltration of benzene emissions: Biofilter response to variations in the pollutants inlet concentration and gas flow rate <br/> <br/>Authors: Mathur, Anil Kumar; Majumder, C. B. <br/> <br/>Abstract: To examine biofilter response with varying loading rate, a laboratory-based biofilter, packed with mixture of compost, sugar cane bagasse and granulated active carbon (GAC), was used for treating benzene. At influent benzene loadings (< 40 g m⁻³h⁻¹), nearly 100% removal could be achieved. Maximum elimination capacity of biofilter was 83.65 g m⁻³h⁻¹ at inlet benzene load of 69 g m⁻³h⁻¹. Using Wani’s method of macrokinetic determination, maximum removal rate (μmax) was calculated as 0.017 g m⁻³s⁻¹, and saturation constant (Kﻯ) of benzene value as 0.0226 g m⁻³. Increase in CO₂ production with elimination capacity suggested that removal of benzene was due to microorganism and good due to the performance of biofilter. The mixture of packing material of bagasse, compost and GAC appears to be an efficient packing material for low to medium loading rate. <br/> <br/>Page(s): 243-248 http://nopr.niscair.res.in/handle/123456789/773 Title: Efficient cogeneration scheme for sugar industry <br/> <br/>Authors: Premalatha, M; Priya, S Shanmuga; Sivaramakrishnan, V <br/> <br/>Abstract: Present work is a case study on sugar industry and economics is worked out for advanced cogeneration power system. By replacing low efficiency mill turbines with hydraulic drives and DC motors, cogeneration power increases in sugar mill to operate at high efficiency (65-70%). This replacement can aid increase of power to grid, resulting in additional revenue for sugar plant. <br/> <br/>Page(s): 239-242