The optimization of Cu and Fe bioleaching from converter slag using Acidithiobacilus ferrooxidans
The main objective of this work was to assess the optimization of Fe and Cu bioleaching from converter slag using Acidithiobacillus ferrooxidans. Important parameters that contribute to the bioleaching process include initial pH, initial Fe2+ concentration and pulp density. In order to optimize thes...
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Kurdistan University of Medical Sciences
2017-08-01
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doaj-29c3cfe488884d739c19e591fb138cef2021-07-14T06:01:53ZengKurdistan University of Medical SciencesJournal of Advances in Environmental Health Research2345-39902345-39902017-08-015315416210.22102/jaehr.2017.81512.101355849The optimization of Cu and Fe bioleaching from converter slag using Acidithiobacilus ferrooxidansSaeb Ahmadi0Mohsen Vafaie Sefti1Mohammad Mahdi Shadman2Zahra Azimi Dijvejin3Hooshyar Hosseini4Chemical Engineering Department, Tarbiat Modares University, Tehran, IranChemical Engineering Department, Tarbiat Modares University, Tehran, IranChemical Engineering Department, Tarbiat Modares University, Tehran, IranChemical Engineering Department, Tarbiat Modares University, Tehran, IranDepartment of Environmental Health Engineering, Faculty of Health, Kermanshah University of Medical Sciences, Kermanshah, IranThe main objective of this work was to assess the optimization of Fe and Cu bioleaching from converter slag using Acidithiobacillus ferrooxidans. Important parameters that contribute to the bioleaching process include initial pH, initial Fe2+ concentration and pulp density. In order to optimize these parameters, the response surface methodology (RSM) was applied. The maximum simultaneous Fe and Cu recovery yields were 95% and 100%, respectively. The optimum conditions were initial pH 1.8, initial density 1.4 g/100 mL and initial Fe2+ 7.3 g/L. The comparison between chemical leaching and bioleaching results showed that bioleaching improved the recovery yields of Fe and Cu by 26% and 33%, respectively. The modified shrinking core model was used to determine the rate-limiting step of the process. It was found that diffusion through the product layer and chemical reaction are the rate controlling steps.http://jaehr.muk.ac.ir/article_55849_1ed4a38ec756adadbac814b2a8c591df.pdfbioleachingconverter slagacidithiobacillus ferrooxidansoptimizationkinetic |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Saeb Ahmadi Mohsen Vafaie Sefti Mohammad Mahdi Shadman Zahra Azimi Dijvejin Hooshyar Hosseini |
spellingShingle |
Saeb Ahmadi Mohsen Vafaie Sefti Mohammad Mahdi Shadman Zahra Azimi Dijvejin Hooshyar Hosseini The optimization of Cu and Fe bioleaching from converter slag using Acidithiobacilus ferrooxidans Journal of Advances in Environmental Health Research bioleaching converter slag acidithiobacillus ferrooxidans optimization kinetic |
author_facet |
Saeb Ahmadi Mohsen Vafaie Sefti Mohammad Mahdi Shadman Zahra Azimi Dijvejin Hooshyar Hosseini |
author_sort |
Saeb Ahmadi |
title |
The optimization of Cu and Fe bioleaching from converter slag using Acidithiobacilus ferrooxidans |
title_short |
The optimization of Cu and Fe bioleaching from converter slag using Acidithiobacilus ferrooxidans |
title_full |
The optimization of Cu and Fe bioleaching from converter slag using Acidithiobacilus ferrooxidans |
title_fullStr |
The optimization of Cu and Fe bioleaching from converter slag using Acidithiobacilus ferrooxidans |
title_full_unstemmed |
The optimization of Cu and Fe bioleaching from converter slag using Acidithiobacilus ferrooxidans |
title_sort |
optimization of cu and fe bioleaching from converter slag using acidithiobacilus ferrooxidans |
publisher |
Kurdistan University of Medical Sciences |
series |
Journal of Advances in Environmental Health Research |
issn |
2345-3990 2345-3990 |
publishDate |
2017-08-01 |
description |
The main objective of this work was to assess the optimization of Fe and Cu bioleaching from converter slag using Acidithiobacillus ferrooxidans. Important parameters that contribute to the bioleaching process include initial pH, initial Fe2+ concentration and pulp density. In order to optimize these parameters, the response surface methodology (RSM) was applied. The maximum simultaneous Fe and Cu recovery yields were 95% and 100%, respectively. The optimum conditions were initial pH 1.8, initial density 1.4 g/100 mL and initial Fe2+ 7.3 g/L. The comparison between chemical leaching and bioleaching results showed that bioleaching improved the recovery yields of Fe and Cu by 26% and 33%, respectively. The modified shrinking core model was used to determine the rate-limiting step of the process. It was found that diffusion through the product layer and chemical reaction are the rate controlling steps. |
topic |
bioleaching converter slag acidithiobacillus ferrooxidans optimization kinetic |
url |
http://jaehr.muk.ac.ir/article_55849_1ed4a38ec756adadbac814b2a8c591df.pdf |
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