The Systematic Adsorption of Diclofenac onto Waste Red Bricks Functionalized with Iron Oxides
In this study, waste red bricks were incorporated with iron oxides (goethite and hematite) and used for the removal of diclofenac (DCF) from aqueous solutions. The prepared waste red bricks were systematically characterized by XRF, XRD, BET, and SEM. The batch experiments were systematically conduct...
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MDPI AG
2018-09-01
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| Series: | Water |
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| Online Access: | http://www.mdpi.com/2073-4441/10/10/1343 |
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| author | Ziyang Zhang Yuxiu Li Hongrui Chen Xiaoran Zhang Haiyan Li |
| author_facet | Ziyang Zhang Yuxiu Li Hongrui Chen Xiaoran Zhang Haiyan Li |
| author_sort | Ziyang Zhang |
| collection | DOAJ |
| description | In this study, waste red bricks were incorporated with iron oxides (goethite and hematite) and used for the removal of diclofenac (DCF) from aqueous solutions. The prepared waste red bricks were systematically characterized by XRF, XRD, BET, and SEM. The batch experiments were systematically conducted by investigating the adsorption kinetics, isotherms, thermodynamics, pH, and ionic strength effect. Results showed that the incorporation of iron oxides could enhance the adsorption capacity of DCF onto waste bricks, while the increased effect of hematite was better than goethite. DCF was adsorbed rapidly onto waste bricks, and the adsorption kinetic fitted the pseudo-second-order model perfectly, which could be attributed to the strong interaction between DCF and iron oxides. The increasing pH values decreased the adsorption capacity greatly, which may be due to the electrostatic repulsive interactions. The adsorption of DCF onto waste bricks was an exothermic reaction, and the adsorption isotherms fitted well with the Langmuir model. This study offers new guidelines for the utilization of construction waste, and shows useful methods for the elimination of micropollutants from aqueous solution. |
| first_indexed | 2024-04-12T12:11:13Z |
| format | Article |
| id | doaj.art-683489075bff474696eb02d0c84ac0f1 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-04-12T12:11:13Z |
| publishDate | 2018-09-01 |
| publisher | MDPI AG |
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| series | Water |
| spelling | doaj.art-683489075bff474696eb02d0c84ac0f12022-12-22T03:33:34ZengMDPI AGWater2073-44412018-09-011010134310.3390/w10101343w10101343The Systematic Adsorption of Diclofenac onto Waste Red Bricks Functionalized with Iron OxidesZiyang Zhang0Yuxiu Li1Hongrui Chen2Xiaoran Zhang3Haiyan Li4Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing 100044, ChinaBeijing Urban Green Source Environmental Protection Technology Cooperation, Beijing 102601, ChinaCRRC Environmental Science & Technology Cooperation, Beijing 100067, ChinaBeijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing 100044, ChinaBeijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing 100044, ChinaIn this study, waste red bricks were incorporated with iron oxides (goethite and hematite) and used for the removal of diclofenac (DCF) from aqueous solutions. The prepared waste red bricks were systematically characterized by XRF, XRD, BET, and SEM. The batch experiments were systematically conducted by investigating the adsorption kinetics, isotherms, thermodynamics, pH, and ionic strength effect. Results showed that the incorporation of iron oxides could enhance the adsorption capacity of DCF onto waste bricks, while the increased effect of hematite was better than goethite. DCF was adsorbed rapidly onto waste bricks, and the adsorption kinetic fitted the pseudo-second-order model perfectly, which could be attributed to the strong interaction between DCF and iron oxides. The increasing pH values decreased the adsorption capacity greatly, which may be due to the electrostatic repulsive interactions. The adsorption of DCF onto waste bricks was an exothermic reaction, and the adsorption isotherms fitted well with the Langmuir model. This study offers new guidelines for the utilization of construction waste, and shows useful methods for the elimination of micropollutants from aqueous solution.http://www.mdpi.com/2073-4441/10/10/1343waste bricksgoethitehematiteadsorptiondiclofenac |
| spellingShingle | Ziyang Zhang Yuxiu Li Hongrui Chen Xiaoran Zhang Haiyan Li The Systematic Adsorption of Diclofenac onto Waste Red Bricks Functionalized with Iron Oxides Water waste bricks goethite hematite adsorption diclofenac |
| title | The Systematic Adsorption of Diclofenac onto Waste Red Bricks Functionalized with Iron Oxides |
| title_full | The Systematic Adsorption of Diclofenac onto Waste Red Bricks Functionalized with Iron Oxides |
| title_fullStr | The Systematic Adsorption of Diclofenac onto Waste Red Bricks Functionalized with Iron Oxides |
| title_full_unstemmed | The Systematic Adsorption of Diclofenac onto Waste Red Bricks Functionalized with Iron Oxides |
| title_short | The Systematic Adsorption of Diclofenac onto Waste Red Bricks Functionalized with Iron Oxides |
| title_sort | systematic adsorption of diclofenac onto waste red bricks functionalized with iron oxides |
| topic | waste bricks goethite hematite adsorption diclofenac |
| url | http://www.mdpi.com/2073-4441/10/10/1343 |
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