Bioleaching of Al from spent fluid catalytic cracking catalyst using Aspergillus species

Bioleaching of Al from spent fluid catalytic cracking catalyst using Aspergillus species

Bioleaching uses biodegradable organic acids, thereby making the process environmental friendly as compared to chemical leaching. In this work, bioleaching of aluminium (Al) metal from spent catalyst was investigated by using three Aspergillus strains (A. niger, A. foetidus, and A. carbonarius). Bio...

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Main Authors: Sutapa Das, Narendra Naik Deshavath, V.V. Goud, V. Venkata Dasu
Format: Article
Language:English
Published: Elsevier 2019-09-01
Series:Biotechnology Reports
Online Access:http://www.sciencedirect.com/science/article/pii/S2215017X19300529
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spelling doaj-e4854a91350c42afa77dbf6266c63dcc2020-11-24T21:56:03ZengElsevierBiotechnology Reports2215-017X2019-09-0123Bioleaching of Al from spent fluid catalytic cracking catalyst using Aspergillus speciesSutapa Das0Narendra Naik Deshavath1V.V. Goud2V. Venkata Dasu3Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, IndiaCentre for the Environment, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, IndiaDepartment of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India; Centre for the Environment, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India; Corresponding author at: Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.Centre for the Environment, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India; Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, IndiaBioleaching uses biodegradable organic acids, thereby making the process environmental friendly as compared to chemical leaching. In this work, bioleaching of aluminium (Al) metal from spent catalyst was investigated by using three Aspergillus strains (A. niger, A. foetidus, and A. carbonarius). Bioleaching was performed in batch culture mode at different loading densities of spent catalyst (i.e., 0.4%, 0.8% and 1.2% (w/v)). The highest Al leaching efficiency of 88.43% was obtained at 0.8% ((w/v)) catalyst loading using A. foetidus, further increase in the catalyst loading decreased the efficiency. In addition to this, molasses was used as a carbon source (low-cost) at various concentrations for bioleaching of spent catalyst and the results were found to be significant at 40 g/L sugar concertation with 60% bioleaching efficiency. Overall, this study indicates that A. foetidus have the potential for leaching of Al from spent catalysts. Therefore, present research findings suggested that, instead of using mineral acids, organic acids (biodegradable) usage for metal leaching process is highly reliable and eco-friendly as well. Keywords: Bioleaching, Fungal strains, FCC catalyst, Molasses, Sucrosehttp://www.sciencedirect.com/science/article/pii/S2215017X19300529
collection DOAJ
language English
format Article
sources DOAJ
author Sutapa Das
Narendra Naik Deshavath
V.V. Goud
V. Venkata Dasu
spellingShingle Sutapa Das
Narendra Naik Deshavath
V.V. Goud
V. Venkata Dasu
Bioleaching of Al from spent fluid catalytic cracking catalyst using Aspergillus species
Biotechnology Reports
author_facet Sutapa Das
Narendra Naik Deshavath
V.V. Goud
V. Venkata Dasu
author_sort Sutapa Das
title Bioleaching of Al from spent fluid catalytic cracking catalyst using Aspergillus species
title_short Bioleaching of Al from spent fluid catalytic cracking catalyst using Aspergillus species
title_full Bioleaching of Al from spent fluid catalytic cracking catalyst using Aspergillus species
title_fullStr Bioleaching of Al from spent fluid catalytic cracking catalyst using Aspergillus species
title_full_unstemmed Bioleaching of Al from spent fluid catalytic cracking catalyst using Aspergillus species
title_sort bioleaching of al from spent fluid catalytic cracking catalyst using aspergillus species
publisher Elsevier
series Biotechnology Reports
issn 2215-017X
publishDate 2019-09-01
description Bioleaching uses biodegradable organic acids, thereby making the process environmental friendly as compared to chemical leaching. In this work, bioleaching of aluminium (Al) metal from spent catalyst was investigated by using three Aspergillus strains (A. niger, A. foetidus, and A. carbonarius). Bioleaching was performed in batch culture mode at different loading densities of spent catalyst (i.e., 0.4%, 0.8% and 1.2% (w/v)). The highest Al leaching efficiency of 88.43% was obtained at 0.8% ((w/v)) catalyst loading using A. foetidus, further increase in the catalyst loading decreased the efficiency. In addition to this, molasses was used as a carbon source (low-cost) at various concentrations for bioleaching of spent catalyst and the results were found to be significant at 40 g/L sugar concertation with 60% bioleaching efficiency. Overall, this study indicates that A. foetidus have the potential for leaching of Al from spent catalysts. Therefore, present research findings suggested that, instead of using mineral acids, organic acids (biodegradable) usage for metal leaching process is highly reliable and eco-friendly as well. Keywords: Bioleaching, Fungal strains, FCC catalyst, Molasses, Sucrose
url http://www.sciencedirect.com/science/article/pii/S2215017X19300529
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AT narendranaikdeshavath bioleachingofalfromspentfluidcatalyticcrackingcatalystusingaspergillusspecies
AT vvgoud bioleachingofalfromspentfluidcatalyticcrackingcatalystusingaspergillusspecies
AT vvenkatadasu bioleachingofalfromspentfluidcatalyticcrackingcatalystusingaspergillusspecies
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