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Copper Adsorption on Lignin for the Removal of Hydrogen Sulfide
Lignin is currently an underutilized part of biomass; thus, further research into lignin could benefit both scientific and commercial endeavors. The present study investigated the potential of kraft lignin as a support material for the removal of hydrogen sulfide (H(2)S) from gaseous streams, such a...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7729966/ https://www.ncbi.nlm.nih.gov/pubmed/33261028 http://dx.doi.org/10.3390/molecules25235577 |
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author | Nikolic, Miroslav Cáceres Najarro, Marleny Johannsen, Ib Iruthayaraj, Joseph Ceccato, Marcel Feilberg, Anders |
author_facet | Nikolic, Miroslav Cáceres Najarro, Marleny Johannsen, Ib Iruthayaraj, Joseph Ceccato, Marcel Feilberg, Anders |
author_sort | Nikolic, Miroslav |
collection | PubMed |
description | Lignin is currently an underutilized part of biomass; thus, further research into lignin could benefit both scientific and commercial endeavors. The present study investigated the potential of kraft lignin as a support material for the removal of hydrogen sulfide (H(2)S) from gaseous streams, such as biogas. The removal of H(2)S was enabled by copper ions that were previously adsorbed on kraft lignin. Copper adsorption was based on two different strategies: either directly on lignin particles or by precipitating lignin from a solution in the presence of copper. The H(2)S concentration after the adsorption column was studied using proton-transfer-reaction mass spectrometry, while the mechanisms involved in the H(2)S adsorption were studied with X-ray photoelectron spectroscopy. It was determined that elemental sulfur was obtained during the H(2)S adsorption in the presence of kraft lignin and the differences relative to the adsorption on porous silica as a control are discussed. For kraft lignin, only a relatively low removal capacity of 2 mg of H(2)S per gram was identified, but certain possibilities to increase the removal capacity are discussed. |
format | Online Article Text |
id | pubmed-7729966 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-77299662020-12-12 Copper Adsorption on Lignin for the Removal of Hydrogen Sulfide Nikolic, Miroslav Cáceres Najarro, Marleny Johannsen, Ib Iruthayaraj, Joseph Ceccato, Marcel Feilberg, Anders Molecules Article Lignin is currently an underutilized part of biomass; thus, further research into lignin could benefit both scientific and commercial endeavors. The present study investigated the potential of kraft lignin as a support material for the removal of hydrogen sulfide (H(2)S) from gaseous streams, such as biogas. The removal of H(2)S was enabled by copper ions that were previously adsorbed on kraft lignin. Copper adsorption was based on two different strategies: either directly on lignin particles or by precipitating lignin from a solution in the presence of copper. The H(2)S concentration after the adsorption column was studied using proton-transfer-reaction mass spectrometry, while the mechanisms involved in the H(2)S adsorption were studied with X-ray photoelectron spectroscopy. It was determined that elemental sulfur was obtained during the H(2)S adsorption in the presence of kraft lignin and the differences relative to the adsorption on porous silica as a control are discussed. For kraft lignin, only a relatively low removal capacity of 2 mg of H(2)S per gram was identified, but certain possibilities to increase the removal capacity are discussed. MDPI 2020-11-27 /pmc/articles/PMC7729966/ /pubmed/33261028 http://dx.doi.org/10.3390/molecules25235577 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Nikolic, Miroslav Cáceres Najarro, Marleny Johannsen, Ib Iruthayaraj, Joseph Ceccato, Marcel Feilberg, Anders Copper Adsorption on Lignin for the Removal of Hydrogen Sulfide |
title | Copper Adsorption on Lignin for the Removal of Hydrogen Sulfide |
title_full | Copper Adsorption on Lignin for the Removal of Hydrogen Sulfide |
title_fullStr | Copper Adsorption on Lignin for the Removal of Hydrogen Sulfide |
title_full_unstemmed | Copper Adsorption on Lignin for the Removal of Hydrogen Sulfide |
title_short | Copper Adsorption on Lignin for the Removal of Hydrogen Sulfide |
title_sort | copper adsorption on lignin for the removal of hydrogen sulfide |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7729966/ https://www.ncbi.nlm.nih.gov/pubmed/33261028 http://dx.doi.org/10.3390/molecules25235577 |
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