Evaluation of Adsorption Capacity of Low Cost Adsorbent for the Removal of Congo Red Dye from Aqueous Solution

<p class="orbitalabstract">Vigna unguiculata seed husk powder has been investigated as low cost adsorbent for the removal of hazardous chemicals like Congo Red (CR) dye from aqueous solution. Various parameters such as effect of contact time, initial CR dye concentration, adsorbent d...

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Main Authors: Dattatraya Jirekar, Milind Ubale, Mazahar Farooqui
Format: Article
Language:English
Published: Universidade Federal de Mato Grosso do Sul 2016-10-01
Series:Orbital: The Electronic Journal of Chemistry
Subjects:
Online Access:http://orbital.ufms.br/index.php/Chemistry/article/view/834
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spelling doaj-4b1b69eec08b4f66a70fb384cd79fbb92021-07-07T19:22:37ZengUniversidade Federal de Mato Grosso do SulOrbital: The Electronic Journal of Chemistry1984-64282016-10-018528228710.17807/orbital.v8i5.834395Evaluation of Adsorption Capacity of Low Cost Adsorbent for the Removal of Congo Red Dye from Aqueous SolutionDattatraya Jirekar0Milind Ubale1Mazahar Farooqui2Anandrao Dhonde Alias Babaji College, KadaVasntrao Naik College, AurangabadDr. Rafiq Zakaria College for Women, Aurangabad<p class="orbitalabstract">Vigna unguiculata seed husk powder has been investigated as low cost adsorbent for the removal of hazardous chemicals like Congo Red (CR) dye from aqueous solution. Various parameters such as effect of contact time, initial CR dye concentration, adsorbent dose, effect of pH, zero-point pH were studied. Batch adsorption technique was employed to optimize the process parameter. The result indicated that, the percentage adsorption of Congo Red increased with increase in contact time, dose of adsorbent and initial concentration of Congo Red and decreased with addition of salt. The adsorption of Congo Red was 78% at the optimum pH of 6. Adsorption equilibrium was found to be reached in 24 h for 5 to 25 g/50 mL Congo red concentrations. The Langmuir and Freundlich isotherm models were found to provide an excellent fitting of the adsorption data.  The adsorption of CR follows Second order rate kinetics. Thermodynamic parameter (δG<sup>o</sup>) showed that it was an exothermic process. This adsorbent was found to be effective and economically attractive.</p><p class="orbitalabstract"> </p><p class="orbitalabstract">DOI: <a href="http://dx.doi.org/10.17807/orbital.v8i5.834">http://dx.doi.org/10.17807/orbital.v8i5.834</a></p>http://orbital.ufms.br/index.php/Chemistry/article/view/834congo redkineticslangmuir-freundlich isothermsthermodynamic parametersvigna unguiculata
collection DOAJ
language English
format Article
sources DOAJ
author Dattatraya Jirekar
Milind Ubale
Mazahar Farooqui
spellingShingle Dattatraya Jirekar
Milind Ubale
Mazahar Farooqui
Evaluation of Adsorption Capacity of Low Cost Adsorbent for the Removal of Congo Red Dye from Aqueous Solution
Orbital: The Electronic Journal of Chemistry
congo red
kinetics
langmuir-freundlich isotherms
thermodynamic parameters
vigna unguiculata
author_facet Dattatraya Jirekar
Milind Ubale
Mazahar Farooqui
author_sort Dattatraya Jirekar
title Evaluation of Adsorption Capacity of Low Cost Adsorbent for the Removal of Congo Red Dye from Aqueous Solution
title_short Evaluation of Adsorption Capacity of Low Cost Adsorbent for the Removal of Congo Red Dye from Aqueous Solution
title_full Evaluation of Adsorption Capacity of Low Cost Adsorbent for the Removal of Congo Red Dye from Aqueous Solution
title_fullStr Evaluation of Adsorption Capacity of Low Cost Adsorbent for the Removal of Congo Red Dye from Aqueous Solution
title_full_unstemmed Evaluation of Adsorption Capacity of Low Cost Adsorbent for the Removal of Congo Red Dye from Aqueous Solution
title_sort evaluation of adsorption capacity of low cost adsorbent for the removal of congo red dye from aqueous solution
publisher Universidade Federal de Mato Grosso do Sul
series Orbital: The Electronic Journal of Chemistry
issn 1984-6428
publishDate 2016-10-01
description <p class="orbitalabstract">Vigna unguiculata seed husk powder has been investigated as low cost adsorbent for the removal of hazardous chemicals like Congo Red (CR) dye from aqueous solution. Various parameters such as effect of contact time, initial CR dye concentration, adsorbent dose, effect of pH, zero-point pH were studied. Batch adsorption technique was employed to optimize the process parameter. The result indicated that, the percentage adsorption of Congo Red increased with increase in contact time, dose of adsorbent and initial concentration of Congo Red and decreased with addition of salt. The adsorption of Congo Red was 78% at the optimum pH of 6. Adsorption equilibrium was found to be reached in 24 h for 5 to 25 g/50 mL Congo red concentrations. The Langmuir and Freundlich isotherm models were found to provide an excellent fitting of the adsorption data.  The adsorption of CR follows Second order rate kinetics. Thermodynamic parameter (δG<sup>o</sup>) showed that it was an exothermic process. This adsorbent was found to be effective and economically attractive.</p><p class="orbitalabstract"> </p><p class="orbitalabstract">DOI: <a href="http://dx.doi.org/10.17807/orbital.v8i5.834">http://dx.doi.org/10.17807/orbital.v8i5.834</a></p>
topic congo red
kinetics
langmuir-freundlich isotherms
thermodynamic parameters
vigna unguiculata
url http://orbital.ufms.br/index.php/Chemistry/article/view/834
work_keys_str_mv AT dattatrayajirekar evaluationofadsorptioncapacityoflowcostadsorbentfortheremovalofcongoreddyefromaqueoussolution
AT milindubale evaluationofadsorptioncapacityoflowcostadsorbentfortheremovalofcongoreddyefromaqueoussolution
AT mazaharfarooqui evaluationofadsorptioncapacityoflowcostadsorbentfortheremovalofcongoreddyefromaqueoussolution
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