Optimization of chemical regeneration procedures of spent activated carbon
The chemical regeneration of granular activated carbon exhausted in a petrochemical wastewater unit was investigated. Gas chromatography and energy-dispersive X-ray spectroscopy demonstrated that spent activated carbon carries large types of organic and inorganic materials. Diverse chemical solvents...
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Iranian Research Organization for Science and Technology (IROST)
2017-01-01
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doaj-6ac541ee31d8496dbe13be3ee66e487b2021-03-24T19:08:09ZengIranian Research Organization for Science and Technology (IROST) Advances in Environmental Technology2476-66742476-47792017-01-0131455110.22104/aet.2017.504504Optimization of chemical regeneration procedures of spent activated carbonNaser Ghasemzadeh0Mohammad Ghadiri1Alireza Behroozsarand2Faculty of Chemical Engineering, Urmia University of Technology, Urmia, Iran.Faculty of Chemical Engineering, Urmia University of Technology, Urmia, Iran.Faculty of Chemical Engineering, Urmia University of Technology, Urmia, Iran.The chemical regeneration of granular activated carbon exhausted in a petrochemical wastewater unit was investigated. Gas chromatography and energy-dispersive X-ray spectroscopy demonstrated that spent activated carbon carries large types of organic and inorganic materials. Diverse chemical solvents were adopted in comparison with traditional chemical solvents and regeneration efficiency was investigated for each approach. The optimum procedure and optimum condition including temperature, concentration of solvent, and time were determined. The regenerated activated carbon was used in the adsorption of methylene blue (MB) in order to find its regeneration efficiency. The regeneration efficiency can be identified by comparing of amount of MB absorbed by the fresh and regenerated activated carbon. The best acidic regenerator was hydrofluoric acid. The higher the temperature causes the faster desorption rate and consequently, the higher regeneration efficiency. The regeneration efficiency increased by means of an increase in the time of regeneration and solvent concentration, but there was an optimum time and solvent concentration for regeneration. The optimum temperature, solvent concentration and regeneration time obtained was 80 ⁰C, 3 molar and 3 hours, respectively.http://aet.irost.ir/article_504_f9cc560f8aada45eac709cd559677df4.pdfactivated carbonchemical regeneratorhydrofluoric acidregenerationwaste water |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Naser Ghasemzadeh Mohammad Ghadiri Alireza Behroozsarand |
spellingShingle |
Naser Ghasemzadeh Mohammad Ghadiri Alireza Behroozsarand Optimization of chemical regeneration procedures of spent activated carbon Advances in Environmental Technology activated carbon chemical regenerator hydrofluoric acid regeneration waste water |
author_facet |
Naser Ghasemzadeh Mohammad Ghadiri Alireza Behroozsarand |
author_sort |
Naser Ghasemzadeh |
title |
Optimization of chemical regeneration procedures of spent activated carbon |
title_short |
Optimization of chemical regeneration procedures of spent activated carbon |
title_full |
Optimization of chemical regeneration procedures of spent activated carbon |
title_fullStr |
Optimization of chemical regeneration procedures of spent activated carbon |
title_full_unstemmed |
Optimization of chemical regeneration procedures of spent activated carbon |
title_sort |
optimization of chemical regeneration procedures of spent activated carbon |
publisher |
Iranian Research Organization for Science and Technology (IROST) |
series |
Advances in Environmental Technology |
issn |
2476-6674 2476-4779 |
publishDate |
2017-01-01 |
description |
The chemical regeneration of granular activated carbon exhausted in a petrochemical wastewater unit was investigated. Gas chromatography and energy-dispersive X-ray spectroscopy demonstrated that spent activated carbon carries large types of organic and inorganic materials. Diverse chemical solvents were adopted in comparison with traditional chemical solvents and regeneration efficiency was investigated for each approach. The optimum procedure and optimum condition including temperature, concentration of solvent, and time were determined. The regenerated activated carbon was used in the adsorption of methylene blue (MB) in order to find its regeneration efficiency. The regeneration efficiency can be identified by comparing of amount of MB absorbed by the fresh and regenerated activated carbon. The best acidic regenerator was hydrofluoric acid. The higher the temperature causes the faster desorption rate and consequently, the higher regeneration efficiency. The regeneration efficiency increased by means of an increase in the time of regeneration and solvent concentration, but there was an optimum time and solvent concentration for regeneration. The optimum temperature, solvent concentration and regeneration time obtained was 80 ⁰C, 3 molar and 3 hours, respectively. |
topic |
activated carbon chemical regenerator hydrofluoric acid regeneration waste water |
url |
http://aet.irost.ir/article_504_f9cc560f8aada45eac709cd559677df4.pdf |
work_keys_str_mv |
AT naserghasemzadeh optimizationofchemicalregenerationproceduresofspentactivatedcarbon AT mohammadghadiri optimizationofchemicalregenerationproceduresofspentactivatedcarbon AT alirezabehroozsarand optimizationofchemicalregenerationproceduresofspentactivatedcarbon |
_version_ |
1724204532755333120 |