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<strong>Dye adsorption using low cost carbon adsorbent from agrowaste-pearl millet cob husk</strong>

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Title Statement <strong>Dye adsorption using low cost carbon adsorbent from agrowaste-pearl millet cob husk</strong>
 
Added Entry - Uncontrolled Name Charola, Samir
Das, Prasanta
Maiti, Subarna ; CSIR- Central Salt and Marine Chemical Research Institute
 
Uncontrolled Index Term Single step activation; Adsorption isotherms; Adsorption kinetics; Millet cob husk; Regeneration
 
Summary, etc. Activated carbon (MHAC) has been derived from the millet cob husk in a single step activation at a temperature of 600<sup>o</sup>C, impregnation ratio of 2:1 and residence time of 120 min. The Brunauer–Emmett–Teller (BET) surface area of the MHAC is 1342 m<sup>2</sup>/g and the scanning electron microscopy (SEM) images and Fourier-transform infrared spectroscopy (FT-IR) are similar to commercial activated carbon. The dye removal performance of the generated carbon has been investigated using methylene blue (MB) using following parameters; contact time, initial concentration of MB, <em>p</em>H and temperature. Langmuir, Freundlich, Temkin and Dubinin–Radushkevich (D-R) adsorption isotherms and three kinetic models have been studied. The adsorption equilibrium data is best fitted to Langmuir isotherm with R<sup>2 </sup>value of 0.972 .The adsorption kinetics show that pseudo-second-order kinetic model fits better with the experimental data of MB adsorption by MHAC than pseudo-first-order kinetic model. Regeneration of the carbon has been carried out for five cycles and 85.34 % MB could be adsorbed by the spent carbon, after fifth cycle.
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2019-09-26 15:28:46
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJCT/article/view/16575
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 26, ##issue.no## 1 (2019): Indian Journal of Chemical Technololgy
 
Language Note en