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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/12428

Title: Study of sorption of 2,4-d on outer peristaltic part of waste tire rubber granules
Authors: ALAM, MJB
DIKSHIT, AK
BANERJEE, M
REZA, I
RAHMAN, AM
Keywords: fixed-bed adsorbers
predictive model
activated carbon
adsorption
kinetics
design
Issue Date: 2006
Publisher: TAYLOR & FRANCIS INC
Citation: JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, 27(6), 843-849
Abstract: From this study it was evident that outer peristaltic parts of waste tire granules gave the highest removal. Film and pore diffusions are the major factors controlling rates of sorption from solution by porous adsorbents. For sorption of 2,4-D on waste tire rubber granules, the sorption rate coefficient of second-order kinetic equation was utilized indirectly to determine the rate-limiting step. The diffusion coefficient lies in the scale of 10(-8)cm(2)/s, and the pore diffusion coefficient is in the range of 10(-9) -10(-1)0cm(2)/s. So both film and pore diffusion are rate limiting. Considering external mass transfer from fluid to particle, using the effect of initial concentration, and using the effect of adsorbent size, no conclusion was reached regarding rate-controlling steps. It is apparent from the study that external mass transfer (film diffusion) as well as intra-particle diffusion (pore diffusion) play significant roles in the sorption process for 2,4-D removal from water onto rubber granules.
URI: http://dx.doi.org/10.1080/01932690600719115
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12428
http://hdl.handle.net/10054/12428
ISSN: 0193-2691
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