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Hydrogen Sulfide Adsorption by Iron Oxides and Their Polymer Composites: A Case-Study Application to Biogas Purification

An experimental study of hydrogen sulfide adsorption on a fixed bed for biogas purification is proposed. The adsorbent investigated was powdered hematite, synthesized by a wet-chemical precipitation method and further activated with copper (II) oxide, used both as produced and after pelletization wi...

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Autores principales: Costa, Camilla, Cornacchia, Matteo, Pagliero, Marcello, Fabiano, Bruno, Vocciante, Marco, Reverberi, Andrea Pietro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7660218/
https://www.ncbi.nlm.nih.gov/pubmed/33105898
http://dx.doi.org/10.3390/ma13214725
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author Costa, Camilla
Cornacchia, Matteo
Pagliero, Marcello
Fabiano, Bruno
Vocciante, Marco
Reverberi, Andrea Pietro
author_facet Costa, Camilla
Cornacchia, Matteo
Pagliero, Marcello
Fabiano, Bruno
Vocciante, Marco
Reverberi, Andrea Pietro
author_sort Costa, Camilla
collection PubMed
description An experimental study of hydrogen sulfide adsorption on a fixed bed for biogas purification is proposed. The adsorbent investigated was powdered hematite, synthesized by a wet-chemical precipitation method and further activated with copper (II) oxide, used both as produced and after pelletization with polyvinyl alcohol as a binder. The pelletization procedure aims at optimizing the mechanical properties of the pellet without reducing the specific surface area. The active substrate has been characterized in its chemical composition and physical properties by X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), thermogravimetric analysis (TGA) and N(2) physisorption/desorption for the determination of surface area. Both powders and pellets have been tested as sorbents for biogas purification in a fixed bed of a steady-state adsorption column and the relevant breakthrough curves were determined for different operating conditions. The performance was critically analyzed and compared with that typical of other commercial sorbents based on zinc oxide or relying upon specific compounds supported on a chemically inert matrix (SulfaTreat(®)). The technique proposed may represent a cost-effective and sustainable alternative to commercial sorbents in conventional desulphurization processes.
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spelling pubmed-76602182020-11-13 Hydrogen Sulfide Adsorption by Iron Oxides and Their Polymer Composites: A Case-Study Application to Biogas Purification Costa, Camilla Cornacchia, Matteo Pagliero, Marcello Fabiano, Bruno Vocciante, Marco Reverberi, Andrea Pietro Materials (Basel) Article An experimental study of hydrogen sulfide adsorption on a fixed bed for biogas purification is proposed. The adsorbent investigated was powdered hematite, synthesized by a wet-chemical precipitation method and further activated with copper (II) oxide, used both as produced and after pelletization with polyvinyl alcohol as a binder. The pelletization procedure aims at optimizing the mechanical properties of the pellet without reducing the specific surface area. The active substrate has been characterized in its chemical composition and physical properties by X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), thermogravimetric analysis (TGA) and N(2) physisorption/desorption for the determination of surface area. Both powders and pellets have been tested as sorbents for biogas purification in a fixed bed of a steady-state adsorption column and the relevant breakthrough curves were determined for different operating conditions. The performance was critically analyzed and compared with that typical of other commercial sorbents based on zinc oxide or relying upon specific compounds supported on a chemically inert matrix (SulfaTreat(®)). The technique proposed may represent a cost-effective and sustainable alternative to commercial sorbents in conventional desulphurization processes. MDPI 2020-10-22 /pmc/articles/PMC7660218/ /pubmed/33105898 http://dx.doi.org/10.3390/ma13214725 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
Costa, Camilla
Cornacchia, Matteo
Pagliero, Marcello
Fabiano, Bruno
Vocciante, Marco
Reverberi, Andrea Pietro
Hydrogen Sulfide Adsorption by Iron Oxides and Their Polymer Composites: A Case-Study Application to Biogas Purification
title Hydrogen Sulfide Adsorption by Iron Oxides and Their Polymer Composites: A Case-Study Application to Biogas Purification
title_full Hydrogen Sulfide Adsorption by Iron Oxides and Their Polymer Composites: A Case-Study Application to Biogas Purification
title_fullStr Hydrogen Sulfide Adsorption by Iron Oxides and Their Polymer Composites: A Case-Study Application to Biogas Purification
title_full_unstemmed Hydrogen Sulfide Adsorption by Iron Oxides and Their Polymer Composites: A Case-Study Application to Biogas Purification
title_short Hydrogen Sulfide Adsorption by Iron Oxides and Their Polymer Composites: A Case-Study Application to Biogas Purification
title_sort hydrogen sulfide adsorption by iron oxides and their polymer composites: a case-study application to biogas purification
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7660218/
https://www.ncbi.nlm.nih.gov/pubmed/33105898
http://dx.doi.org/10.3390/ma13214725
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