NDLI: Removal of methylene blue dye from aqueous solution by activated carbon prepared from cashew nut shell as a new low-cost adsorbent

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Removal of methylene blue dye from aqueous solution by activated carbon prepared from cashew nut shell as a new low-cost adsorbent

Content Provider	Semantic Scholar
Author	Kumar, P. S. Senthil Ramalingam, Sathya Sathishkumar, Kannaiyan
Copyright Year	2011
Abstract	Methylene blue dye was adsorbed on an adsorbent prepared from cashew nut shell. A batch adsorption study was carried out with variable adsorbent amount, initial dye concentration, contact time and pH. Studies showed that the pH of aqueous solutions affected dye removal as a result of removal efficiency increased with increasing solution pH. The experimental data were analyzed by the Langmuir, Freundlich, Redlich-Peterson, Koble-Corrigan, Toth, Temkin, Sips and Dubinin-Radushkevich models of adsorption using MATLAB 7.1. The experimental data yielded excellent fits within the following isotherm order: Redlich-Peterson>Toth>Sips>Koble-Corrigan>Langmuir>Temkin>Dubinin-Radushkevich>Freundlich, based on its correlation coefficient values. Three simplified kinetic models including a pseudofirst-order, pseudo-second-order and intraparticle diffusion equations were selected to follow the adsorption process. It was shown that the adsorption of methylene blue could be described by the pseudo-second-order equation. The results indicate that cashew nut shell activated carbon could be employed as a low cost alternative to commercial activated carbon in the removal of dyes from wastewater.
Starting Page	149
Ending Page	155
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1007/s11814-010-0342-0
Alternate Webpage(s)	https://www.cheric.org/PDF/KJChE/KC28/KC28-1-0149.pdf
Alternate Webpage(s)	https://doi.org/10.1007/s11814-010-0342-0
Volume Number	28
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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