Adsorption of volatile organic compounds on activated carbon with included iron phosphate
Volatile organic compounds (VOCs) are often hazardous and need commonly to be removed from gas mixtures. Capture on activated carbon (AC) is one approach to achieving this. We hypothesized that the smallest pores on ACs and the inclusion of inorganic phosphates could enhance the low gas pressure upt...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Carbon Trends |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667056923000147 |
| _version_ | 1797809106149441536 |
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| author | Vahid Saadattalab Jiquan Wu Cheuk-Wai Tai Zoltán Bacsik Niklas Hedin |
| author_facet | Vahid Saadattalab Jiquan Wu Cheuk-Wai Tai Zoltán Bacsik Niklas Hedin |
| author_sort | Vahid Saadattalab |
| collection | DOAJ |
| description | Volatile organic compounds (VOCs) are often hazardous and need commonly to be removed from gas mixtures. Capture on activated carbon (AC) is one approach to achieving this. We hypothesized that the smallest pores on ACs and the inclusion of inorganic phosphates could enhance the low gas pressure uptake of two typical VOCs (acetone and isopropanol). To test this hypothesis, ACs were prepared by chemical activation of hydrochars with H3PO4 or a mixture of FeCl3 and H3PO4. The hydrochars had been prepared by hydrothermal carbonization of glucose. The ACs were characterized by XRD, IR, TGA, and the adsorption of N2, CO2, H2O, acetone, and isopropanol. The results showed that the ACs had comparably high adsorption of acetone and isopropanol at low vapor pressures. The low-pressure uptake (at 0.03 kPa) of isopropanol and acetone had values of up to 3.4 mmol/g and 2.2 mmol/g, respectively. This suggests that ACs containing iron phosphate could be of relevance for adsorption driven removal of VOC. It was also observed that the external surface area of the ACs containing iron phosphates increased upon secondary heat treatment in N2. |
| first_indexed | 2024-03-13T06:47:37Z |
| format | Article |
| id | doaj.art-ab7844cdb8204e95b38c00bc5865cffd |
| institution | Directory Open Access Journal |
| issn | 2667-0569 |
| language | English |
| last_indexed | 2024-03-13T06:47:37Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Trends |
| spelling | doaj.art-ab7844cdb8204e95b38c00bc5865cffd2023-06-08T04:20:02ZengElsevierCarbon Trends2667-05692023-06-0111100259Adsorption of volatile organic compounds on activated carbon with included iron phosphateVahid Saadattalab0Jiquan Wu1Cheuk-Wai Tai2Zoltán Bacsik3Niklas Hedin4Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, SwedenCamfil AB, Industrigatan 29, 619 33 Trosa, SwedenDepartment of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, SwedenDepartment of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, SwedenDepartment of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden; Corresponding author.Volatile organic compounds (VOCs) are often hazardous and need commonly to be removed from gas mixtures. Capture on activated carbon (AC) is one approach to achieving this. We hypothesized that the smallest pores on ACs and the inclusion of inorganic phosphates could enhance the low gas pressure uptake of two typical VOCs (acetone and isopropanol). To test this hypothesis, ACs were prepared by chemical activation of hydrochars with H3PO4 or a mixture of FeCl3 and H3PO4. The hydrochars had been prepared by hydrothermal carbonization of glucose. The ACs were characterized by XRD, IR, TGA, and the adsorption of N2, CO2, H2O, acetone, and isopropanol. The results showed that the ACs had comparably high adsorption of acetone and isopropanol at low vapor pressures. The low-pressure uptake (at 0.03 kPa) of isopropanol and acetone had values of up to 3.4 mmol/g and 2.2 mmol/g, respectively. This suggests that ACs containing iron phosphate could be of relevance for adsorption driven removal of VOC. It was also observed that the external surface area of the ACs containing iron phosphates increased upon secondary heat treatment in N2.http://www.sciencedirect.com/science/article/pii/S2667056923000147Acetone adsorptionIsopropanol adsorptionWater adsorptionCO2 adsorptionFe(PO3)2Fe(PO3)3 |
| spellingShingle | Vahid Saadattalab Jiquan Wu Cheuk-Wai Tai Zoltán Bacsik Niklas Hedin Adsorption of volatile organic compounds on activated carbon with included iron phosphate Carbon Trends Acetone adsorption Isopropanol adsorption Water adsorption CO2 adsorption Fe(PO3)2 Fe(PO3)3 |
| title | Adsorption of volatile organic compounds on activated carbon with included iron phosphate |
| title_full | Adsorption of volatile organic compounds on activated carbon with included iron phosphate |
| title_fullStr | Adsorption of volatile organic compounds on activated carbon with included iron phosphate |
| title_full_unstemmed | Adsorption of volatile organic compounds on activated carbon with included iron phosphate |
| title_short | Adsorption of volatile organic compounds on activated carbon with included iron phosphate |
| title_sort | adsorption of volatile organic compounds on activated carbon with included iron phosphate |
| topic | Acetone adsorption Isopropanol adsorption Water adsorption CO2 adsorption Fe(PO3)2 Fe(PO3)3 |
| url | http://www.sciencedirect.com/science/article/pii/S2667056923000147 |
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