Simultaneously Cationic and Anionic Dyes Elimination via Magnetic Hydrochar Prepared from Copper Slag and Pinewood Sawdust
In practical wastewater, cationic and anionic dyes usually coexist, while synergistic removal of these pollutants is difficult due to their relatively opposite properties. In this work, copper slag (CS) modified hydrochar (CSHC) was designed as functional material by the one-pot method. Based on cha...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Toxics |
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| Online Access: | https://www.mdpi.com/2305-6304/11/6/484 |
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| author | Huabin Wang Yi Wu Yi Wen Dingxiang Chen Jiang Pu Yu Ding Sailian Kong Shuaibing Wang Rui Xu |
| author_facet | Huabin Wang Yi Wu Yi Wen Dingxiang Chen Jiang Pu Yu Ding Sailian Kong Shuaibing Wang Rui Xu |
| author_sort | Huabin Wang |
| collection | DOAJ |
| description | In practical wastewater, cationic and anionic dyes usually coexist, while synergistic removal of these pollutants is difficult due to their relatively opposite properties. In this work, copper slag (CS) modified hydrochar (CSHC) was designed as functional material by the one-pot method. Based on characterizations, the Fe species in CS can be converted to zero-valent iron and loaded onto a hydrochar substrate. The CSHC exhibited efficient removal rates for both cationic dyes (methylene blue, MB) and anionic dyes (methyl orange, MO), with a maximum capacity of 278.21 and 357.02 mg·g<sup>−1</sup>, respectively, which was significantly higher than that of unmodified ones. The surface interactions of MB and MO between CSHC were mimicked by the Langmuir model and the pseudo-second-order model. In addition, the magnetic properties of CSHC were also observed, and the good magnetic properties enabled the adsorbent to be quickly separated from the solution with the help of magnets. The adsorption mechanisms include pore filling, complexation, precipitation, and electrostatic attraction. Moreover, the recycling experiments demonstrated the potential regenerative performance of CSHC. All these results shed light on the co-removal of cationic and anionic contaminates via these industrial by-products derived from environmental remediation materials. |
| first_indexed | 2024-03-11T01:52:37Z |
| format | Article |
| id | doaj.art-eef449b945bd450eb53f0be35a5e5f81 |
| institution | Directory Open Access Journal |
| issn | 2305-6304 |
| language | English |
| last_indexed | 2024-03-11T01:52:37Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
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| series | Toxics |
| spelling | doaj.art-eef449b945bd450eb53f0be35a5e5f812023-11-18T12:54:15ZengMDPI AGToxics2305-63042023-05-0111648410.3390/toxics11060484Simultaneously Cationic and Anionic Dyes Elimination via Magnetic Hydrochar Prepared from Copper Slag and Pinewood SawdustHuabin Wang0Yi Wu1Yi Wen2Dingxiang Chen3Jiang Pu4Yu Ding5Sailian Kong6Shuaibing Wang7Rui Xu8School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, ChinaSchool of Energy and Environment Science, Yunnan Normal University, Kunming 650500, ChinaSchool of Energy and Environment Science, Yunnan Normal University, Kunming 650500, ChinaSchool of Energy and Environment Science, Yunnan Normal University, Kunming 650500, ChinaShiping Center for Rural Energy and Environment, Honghe 661400, ChinaBaoshan City Longyang Rural Energy Workstation, Baoshan 678000, ChinaDevelopment Center for Rural Affairs of Jiangchuan District, Yuxi 651100, ChinaCollege of Chemistry Biology and Environment, Yuxi Normal University, Yuxi 653100, ChinaSchool of Energy and Environment Science, Yunnan Normal University, Kunming 650500, ChinaIn practical wastewater, cationic and anionic dyes usually coexist, while synergistic removal of these pollutants is difficult due to their relatively opposite properties. In this work, copper slag (CS) modified hydrochar (CSHC) was designed as functional material by the one-pot method. Based on characterizations, the Fe species in CS can be converted to zero-valent iron and loaded onto a hydrochar substrate. The CSHC exhibited efficient removal rates for both cationic dyes (methylene blue, MB) and anionic dyes (methyl orange, MO), with a maximum capacity of 278.21 and 357.02 mg·g<sup>−1</sup>, respectively, which was significantly higher than that of unmodified ones. The surface interactions of MB and MO between CSHC were mimicked by the Langmuir model and the pseudo-second-order model. In addition, the magnetic properties of CSHC were also observed, and the good magnetic properties enabled the adsorbent to be quickly separated from the solution with the help of magnets. The adsorption mechanisms include pore filling, complexation, precipitation, and electrostatic attraction. Moreover, the recycling experiments demonstrated the potential regenerative performance of CSHC. All these results shed light on the co-removal of cationic and anionic contaminates via these industrial by-products derived from environmental remediation materials.https://www.mdpi.com/2305-6304/11/6/484modified hydrocharcopper slagdyessimultaneous removaladsorption mechanisms |
| spellingShingle | Huabin Wang Yi Wu Yi Wen Dingxiang Chen Jiang Pu Yu Ding Sailian Kong Shuaibing Wang Rui Xu Simultaneously Cationic and Anionic Dyes Elimination via Magnetic Hydrochar Prepared from Copper Slag and Pinewood Sawdust Toxics modified hydrochar copper slag dyes simultaneous removal adsorption mechanisms |
| title | Simultaneously Cationic and Anionic Dyes Elimination via Magnetic Hydrochar Prepared from Copper Slag and Pinewood Sawdust |
| title_full | Simultaneously Cationic and Anionic Dyes Elimination via Magnetic Hydrochar Prepared from Copper Slag and Pinewood Sawdust |
| title_fullStr | Simultaneously Cationic and Anionic Dyes Elimination via Magnetic Hydrochar Prepared from Copper Slag and Pinewood Sawdust |
| title_full_unstemmed | Simultaneously Cationic and Anionic Dyes Elimination via Magnetic Hydrochar Prepared from Copper Slag and Pinewood Sawdust |
| title_short | Simultaneously Cationic and Anionic Dyes Elimination via Magnetic Hydrochar Prepared from Copper Slag and Pinewood Sawdust |
| title_sort | simultaneously cationic and anionic dyes elimination via magnetic hydrochar prepared from copper slag and pinewood sawdust |
| topic | modified hydrochar copper slag dyes simultaneous removal adsorption mechanisms |
| url | https://www.mdpi.com/2305-6304/11/6/484 |
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