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Effective Separation and Recovery of Manganese and Potassium from Biomass Ash by Solvent Extraction

[Image: see text] Manganese (Mn) is considered an important, energy-critical metal due to its leading role in the production of electrochemical energy storage devices. One valuable source of Mn is hyperaccumulator plants used for the phytoremediation of contaminated soil. In this study, stems and le...

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Autores principales: Oleszek, Sylwia, Shiota, Kenji, Chen, Minhsuan, Takaoka, Masaki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9201890/
https://www.ncbi.nlm.nih.gov/pubmed/35721962
http://dx.doi.org/10.1021/acsomega.2c02002
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author Oleszek, Sylwia
Shiota, Kenji
Chen, Minhsuan
Takaoka, Masaki
author_facet Oleszek, Sylwia
Shiota, Kenji
Chen, Minhsuan
Takaoka, Masaki
author_sort Oleszek, Sylwia
collection PubMed
description [Image: see text] Manganese (Mn) is considered an important, energy-critical metal due to its leading role in the production of electrochemical energy storage devices. One valuable source of Mn is hyperaccumulator plants used for the phytoremediation of contaminated soil. In this study, stems and leaves of ginger (Zingiber officinale), which accumulate Mn at moderate levels (∼0.2 wt %) and potassium (K) at high levels (>5 wt %), were analyzed to assess the potential of recovering metals from this plant. The extraction behaviors of Mn and K were studied using raw and ash samples (100–600 °C). It was crucial to set an appropriate incineration temperature (300 °C) to selectively extract K (∼96%) and Mn (∼90%) using water and nitric acid over two consecutive steps. Additionally, citric acid, a cost-effective and environmentally friendly solvent, was just as effective (∼85%) as nitric acid in extracting Mn. X-ray absorbance near-edge spectroscopy and X-ray diffraction analysis of the ash before and after extractions were applied to elucidate the extraction mechanism. The results revealed that selective extraction of both compounds was possible due to the change in the oxidative state of Mn(II) (soluble in water) into Mn(III) and Mn(IV) (insoluble in water) during sample incineration. Simultaneously, there were complex reactions associated with the changes within potassium carbonate compounds; however, these did not affect the K extraction efficiency.
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spelling pubmed-92018902022-06-17 Effective Separation and Recovery of Manganese and Potassium from Biomass Ash by Solvent Extraction Oleszek, Sylwia Shiota, Kenji Chen, Minhsuan Takaoka, Masaki ACS Omega [Image: see text] Manganese (Mn) is considered an important, energy-critical metal due to its leading role in the production of electrochemical energy storage devices. One valuable source of Mn is hyperaccumulator plants used for the phytoremediation of contaminated soil. In this study, stems and leaves of ginger (Zingiber officinale), which accumulate Mn at moderate levels (∼0.2 wt %) and potassium (K) at high levels (>5 wt %), were analyzed to assess the potential of recovering metals from this plant. The extraction behaviors of Mn and K were studied using raw and ash samples (100–600 °C). It was crucial to set an appropriate incineration temperature (300 °C) to selectively extract K (∼96%) and Mn (∼90%) using water and nitric acid over two consecutive steps. Additionally, citric acid, a cost-effective and environmentally friendly solvent, was just as effective (∼85%) as nitric acid in extracting Mn. X-ray absorbance near-edge spectroscopy and X-ray diffraction analysis of the ash before and after extractions were applied to elucidate the extraction mechanism. The results revealed that selective extraction of both compounds was possible due to the change in the oxidative state of Mn(II) (soluble in water) into Mn(III) and Mn(IV) (insoluble in water) during sample incineration. Simultaneously, there were complex reactions associated with the changes within potassium carbonate compounds; however, these did not affect the K extraction efficiency. American Chemical Society 2022-06-01 /pmc/articles/PMC9201890/ /pubmed/35721962 http://dx.doi.org/10.1021/acsomega.2c02002 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Oleszek, Sylwia
Shiota, Kenji
Chen, Minhsuan
Takaoka, Masaki
Effective Separation and Recovery of Manganese and Potassium from Biomass Ash by Solvent Extraction
title Effective Separation and Recovery of Manganese and Potassium from Biomass Ash by Solvent Extraction
title_full Effective Separation and Recovery of Manganese and Potassium from Biomass Ash by Solvent Extraction
title_fullStr Effective Separation and Recovery of Manganese and Potassium from Biomass Ash by Solvent Extraction
title_full_unstemmed Effective Separation and Recovery of Manganese and Potassium from Biomass Ash by Solvent Extraction
title_short Effective Separation and Recovery of Manganese and Potassium from Biomass Ash by Solvent Extraction
title_sort effective separation and recovery of manganese and potassium from biomass ash by solvent extraction
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9201890/
https://www.ncbi.nlm.nih.gov/pubmed/35721962
http://dx.doi.org/10.1021/acsomega.2c02002
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