Waste-Tire-Derived Activated Carbon as Efficient Adsorbent of P-Nitrophenol from Wastewater
In this work, a two-stage activation method was used to prepare adsorbents from scrap tire rubber. Firstly, KOH was mixed with rubber using different impregnation ratios (1–2) for primary activation; a second activation was performed after pyrolysis at 650°C and 750°C; and finally, the samples were...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2022/7313899 |
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| author | Chunhua Hu Suliu Hu Ping Fang Zijun Tang Xiang Xiao Haiwen Wu |
| author_facet | Chunhua Hu Suliu Hu Ping Fang Zijun Tang Xiang Xiao Haiwen Wu |
| author_sort | Chunhua Hu |
| collection | DOAJ |
| description | In this work, a two-stage activation method was used to prepare adsorbents from scrap tire rubber. Firstly, KOH was mixed with rubber using different impregnation ratios (1–2) for primary activation; a second activation was performed after pyrolysis at 650°C and 750°C; and finally, the samples were acid-washed using HNO3. The prepared materials were characterized by elemental analysis, nitrogen adsorption isotherms, SEM, FTIR, and XPS. The adsorption capacity and mechanism of these materials on p-nitrophenol in wastewater were also investigated. It was found that after two-stage activation, the specific surface area of the materials can be effectively increased, and the surface of the materials can be enriched with oxygen-containing functional groups. The maximum adsorption capacity of PNP could reach 143.9 mg g−1, which is slightly higher than the literature data under the same conditions. The adsorption process is in the form of chemisorption and is dominated by hydrogen bonding and π-πEDA formation, but the adsorption tends to be monolayer, and the adsorption behavior can be described by a proposed secondary model. In addition, the adsorbent has a stronger adsorption capacity under acidic conditions. |
| format | Article |
| id | doaj-art-37e680782fbd430fb05b85c05994a8b7 |
| institution | Kabale University |
| issn | 2090-9071 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-37e680782fbd430fb05b85c05994a8b72025-02-03T06:13:32ZengWileyJournal of Chemistry2090-90712022-01-01202210.1155/2022/7313899Waste-Tire-Derived Activated Carbon as Efficient Adsorbent of P-Nitrophenol from WastewaterChunhua Hu0Suliu Hu1Ping Fang2Zijun Tang3Xiang Xiao4Haiwen Wu5Key Laboratory of Poyang Lake Environment and Resource Utilization Ministry of EducationKey Laboratory of Poyang Lake Environment and Resource Utilization Ministry of EducationSouth China Institute of Environmental SciencesSouth China Institute of Environmental SciencesSouth China Institute of Environmental SciencesSouth China Institute of Environmental SciencesIn this work, a two-stage activation method was used to prepare adsorbents from scrap tire rubber. Firstly, KOH was mixed with rubber using different impregnation ratios (1–2) for primary activation; a second activation was performed after pyrolysis at 650°C and 750°C; and finally, the samples were acid-washed using HNO3. The prepared materials were characterized by elemental analysis, nitrogen adsorption isotherms, SEM, FTIR, and XPS. The adsorption capacity and mechanism of these materials on p-nitrophenol in wastewater were also investigated. It was found that after two-stage activation, the specific surface area of the materials can be effectively increased, and the surface of the materials can be enriched with oxygen-containing functional groups. The maximum adsorption capacity of PNP could reach 143.9 mg g−1, which is slightly higher than the literature data under the same conditions. The adsorption process is in the form of chemisorption and is dominated by hydrogen bonding and π-πEDA formation, but the adsorption tends to be monolayer, and the adsorption behavior can be described by a proposed secondary model. In addition, the adsorbent has a stronger adsorption capacity under acidic conditions.http://dx.doi.org/10.1155/2022/7313899 |
| spellingShingle | Chunhua Hu Suliu Hu Ping Fang Zijun Tang Xiang Xiao Haiwen Wu Waste-Tire-Derived Activated Carbon as Efficient Adsorbent of P-Nitrophenol from Wastewater Journal of Chemistry |
| title | Waste-Tire-Derived Activated Carbon as Efficient Adsorbent of P-Nitrophenol from Wastewater |
| title_full | Waste-Tire-Derived Activated Carbon as Efficient Adsorbent of P-Nitrophenol from Wastewater |
| title_fullStr | Waste-Tire-Derived Activated Carbon as Efficient Adsorbent of P-Nitrophenol from Wastewater |
| title_full_unstemmed | Waste-Tire-Derived Activated Carbon as Efficient Adsorbent of P-Nitrophenol from Wastewater |
| title_short | Waste-Tire-Derived Activated Carbon as Efficient Adsorbent of P-Nitrophenol from Wastewater |
| title_sort | waste tire derived activated carbon as efficient adsorbent of p nitrophenol from wastewater |
| url | http://dx.doi.org/10.1155/2022/7313899 |
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