Selective separation of Light green and Safranin O from aqueous solution using Salvadora persica (Miswak) powder as a new biosorbent
In this paper a novel solid phase extraction method to remove Light green (acid dye) and Safranin O (basic dye) using Salvadora persica (Miswak) powder as a new biosorbent is described. The adsorption conditions such as contact time, initial dye concentration, pH and temperature were studied by usin...
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doaj-d73a7448f70c4731a86b5f557117e7172020-11-24T21:25:06ZengElsevierJournal of Saudi Chemical Society1319-61032016-09-0120S1S178S18510.1016/j.jscs.2012.10.011Selective separation of Light green and Safranin O from aqueous solution using Salvadora persica (Miswak) powder as a new biosorbentElhossein A. Moawed0Abdullah B. Abulkibash1Chemistry Department, Faculty of Science, Damietta University, Damietta, EgyptChemistry Department, King Fahd University of Petroleum & Mineral, Dhahran, Saudi ArabiaIn this paper a novel solid phase extraction method to remove Light green (acid dye) and Safranin O (basic dye) using Salvadora persica (Miswak) powder as a new biosorbent is described. The adsorption conditions such as contact time, initial dye concentration, pH and temperature were studied by using batch system. After optimization, Miswak showed an excellent removal rate for dyes, the extraction of the dyes was accomplished in a period range of 1–10 min. The adsorption kinetics data were in good agreement with the pseudo-second-order rate model (R2 = 0.98) and the initial sorption rate (h) was found to be 0.01 g mmol−1 min−1. The new adsorbent was found to have a maximum adsorption capacity of 17.3 mmol/g. The adsorption isotherms could be adequately described by the Freundlich equation (R2 = 0.91) and the 1/n value is 0.9, which attributed to the heterogeneous surface structure of the Miswak. Study of the variation of the sorption of the tested dyes with temperature yielded values for ΔH, ΔS, and ΔG of −21.0, −0.056.3 and −4.2 kJ mol−1, respectively.http://www.sciencedirect.com/science/article/pii/S1319610312001639Salvadora persicaRemovalLight greenSafranine OKineticSeparation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Elhossein A. Moawed Abdullah B. Abulkibash |
spellingShingle |
Elhossein A. Moawed Abdullah B. Abulkibash Selective separation of Light green and Safranin O from aqueous solution using Salvadora persica (Miswak) powder as a new biosorbent Journal of Saudi Chemical Society Salvadora persica Removal Light green Safranine O Kinetic Separation |
author_facet |
Elhossein A. Moawed Abdullah B. Abulkibash |
author_sort |
Elhossein A. Moawed |
title |
Selective separation of Light green and Safranin O from aqueous solution using Salvadora persica (Miswak) powder as a new biosorbent |
title_short |
Selective separation of Light green and Safranin O from aqueous solution using Salvadora persica (Miswak) powder as a new biosorbent |
title_full |
Selective separation of Light green and Safranin O from aqueous solution using Salvadora persica (Miswak) powder as a new biosorbent |
title_fullStr |
Selective separation of Light green and Safranin O from aqueous solution using Salvadora persica (Miswak) powder as a new biosorbent |
title_full_unstemmed |
Selective separation of Light green and Safranin O from aqueous solution using Salvadora persica (Miswak) powder as a new biosorbent |
title_sort |
selective separation of light green and safranin o from aqueous solution using salvadora persica (miswak) powder as a new biosorbent |
publisher |
Elsevier |
series |
Journal of Saudi Chemical Society |
issn |
1319-6103 |
publishDate |
2016-09-01 |
description |
In this paper a novel solid phase extraction method to remove Light green (acid dye) and Safranin O (basic dye) using Salvadora persica (Miswak) powder as a new biosorbent is described. The adsorption conditions such as contact time, initial dye concentration, pH and temperature were studied by using batch system. After optimization, Miswak showed an excellent removal rate for dyes, the extraction of the dyes was accomplished in a period range of 1–10 min. The adsorption kinetics data were in good agreement with the pseudo-second-order rate model (R2 = 0.98) and the initial sorption rate (h) was found to be 0.01 g mmol−1 min−1. The new adsorbent was found to have a maximum adsorption capacity of 17.3 mmol/g. The adsorption isotherms could be adequately described by the Freundlich equation (R2 = 0.91) and the 1/n value is 0.9, which attributed to the heterogeneous surface structure of the Miswak. Study of the variation of the sorption of the tested dyes with temperature yielded values for ΔH, ΔS, and ΔG of −21.0, −0.056.3 and −4.2 kJ mol−1, respectively. |
topic |
Salvadora persica Removal Light green Safranine O Kinetic Separation |
url |
http://www.sciencedirect.com/science/article/pii/S1319610312001639 |
work_keys_str_mv |
AT elhosseinamoawed selectiveseparationoflightgreenandsafraninofromaqueoussolutionusingsalvadorapersicamiswakpowderasanewbiosorbent AT abdullahbabulkibash selectiveseparationoflightgreenandsafraninofromaqueoussolutionusingsalvadorapersicamiswakpowderasanewbiosorbent |
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