Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape
Background and Aim: Water resources pollution control is one of the main challenges of our time for researchers. Colored wastewater discharges caused by textile industry activities has added to the concern. In this study, removal of Acid Orange 7 dye (AO7) using Kenya Tea residue absorbent (granul...
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Electronic Physician
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doaj-571ffeac7d8a4b0fb1a0f53695090fa22020-11-25T01:06:02ZengElectronic PhysicianElectronic Physician2008-58422008-58422017-05-01954312432110.19082/4312Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shapeBehnaz NaraghiFahimeh ZabihiMohammad Reza NarooieMahdi SaeidiHamed BiglariBackground and Aim: Water resources pollution control is one of the main challenges of our time for researchers. Colored wastewater discharges caused by textile industry activities has added to the concern. In this study, removal of Acid Orange 7 dye (AO7) using Kenya Tea residue absorbent (granular) has been studied. Methods: This cross-sectional study was conducted in 2016. In this work, initially, tea residue was prepared in three forms of raw, treated with concentrated phosphoric acid, and carbonated, at temperatures of 350, 450 and 500 °C in the chemistry laboratory of Gonabad University of Medical Sciences. Then, efficiency of the above absorbents in the removal of Acid Orange 7 dye in initial concentrations of dye as 50-500 mg/l from water samples in terms of pH 2-10 and 1-10 g/l of adsorbent dose within 20 to 300 minutes was investigated. In addition, their subordination from Langmuir and Freundlich absorption isotherms was also determined. Concentration changes in Acid Orange 7 dye at a wavelength of 483 nm was determined by spectrophotometry and results were reported using descriptive statistics. Results: Results showed that efficiency of Acid Orange 7 dye removal is higher in acidic pH and higher adsorbent dosage. The highest efficiency of Acid Orange 7 dye removal was 98.41% by raw tea residue absorbent at pH 2, reaction time was 120 minutes and initial concentration of dye was 50 mg/l, which was obtained at adsorbent dosage of 10 g/l. It was determined that the mechanism of absorption acceptably follows Freundlich absorption isotherm (R2=0.97). Conclusion: Due to the availability and very low price, optimal performance of Kenya tea raw residue (granular) in Acid Orange 7 dye removal, it can be used as an efficient surface absorber in an absorber from colored wastewaterhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498694/Acid Orange 7Dye RemovalAqueous SolutionsAdsorptionKenya Tea Pulps |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Behnaz Naraghi Fahimeh Zabihi Mohammad Reza Narooie Mahdi Saeidi Hamed Biglari |
spellingShingle |
Behnaz Naraghi Fahimeh Zabihi Mohammad Reza Narooie Mahdi Saeidi Hamed Biglari Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape Electronic Physician Acid Orange 7 Dye Removal Aqueous Solutions Adsorption Kenya Tea Pulps |
author_facet |
Behnaz Naraghi Fahimeh Zabihi Mohammad Reza Narooie Mahdi Saeidi Hamed Biglari |
author_sort |
Behnaz Naraghi |
title |
Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape |
title_short |
Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape |
title_full |
Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape |
title_fullStr |
Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape |
title_full_unstemmed |
Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape |
title_sort |
removal of acid orange 7 dye from aqueous solutions by adsorption onto kenya tea pulps; granulated shape |
publisher |
Electronic Physician |
series |
Electronic Physician |
issn |
2008-5842 2008-5842 |
publishDate |
2017-05-01 |
description |
Background and Aim: Water resources pollution control is one of the main challenges of our time for
researchers. Colored wastewater discharges caused by textile industry activities has added to the concern. In this
study, removal of Acid Orange 7 dye (AO7) using Kenya Tea residue absorbent (granular) has been studied.
Methods: This cross-sectional study was conducted in 2016. In this work, initially, tea residue was prepared in
three forms of raw, treated with concentrated phosphoric acid, and carbonated, at temperatures of 350, 450 and
500 °C in the chemistry laboratory of Gonabad University of Medical Sciences. Then, efficiency of the above
absorbents in the removal of Acid Orange 7 dye in initial concentrations of dye as 50-500 mg/l from water
samples in terms of pH 2-10 and 1-10 g/l of adsorbent dose within 20 to 300 minutes was investigated. In
addition, their subordination from Langmuir and Freundlich absorption isotherms was also determined.
Concentration changes in Acid Orange 7 dye at a wavelength of 483 nm was determined by spectrophotometry
and results were reported using descriptive statistics.
Results: Results showed that efficiency of Acid Orange 7 dye removal is higher in acidic pH and higher
adsorbent dosage. The highest efficiency of Acid Orange 7 dye removal was 98.41% by raw tea residue absorbent
at pH 2, reaction time was 120 minutes and initial concentration of dye was 50 mg/l, which was obtained at
adsorbent dosage of 10 g/l. It was determined that the mechanism of absorption acceptably follows Freundlich
absorption isotherm (R2=0.97).
Conclusion: Due to the availability and very low price, optimal performance of Kenya tea raw residue (granular)
in Acid Orange 7 dye removal, it can be used as an efficient surface absorber in an absorber from colored
wastewater |
topic |
Acid Orange 7 Dye Removal Aqueous Solutions Adsorption Kenya Tea Pulps |
url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498694/ |
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