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Han C, Xie J, Shi Q, Liang L, Yang T, He S. Capturing Cu 2+ and recycling spent Cu-adsorbents as catalyst for eliminating Rhodamine B: reactivity and mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:110352-110362. [PMID: 37783993 DOI: 10.1007/s11356-023-29942-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 09/13/2023] [Indexed: 10/04/2023]
Abstract
The thorny problem of adsorption is the disposing of spent adsorbent. In this manuscript, the exhaust adsorbent of efficient capture Cu(II) over ZSM-5 that supported zero-valent iron (nZVI) was reused as a catalyst for eliminating Rhodamine B (RhB). Batch experiments were used to evaluate the removal performance of Cu2+ and RhB. The results demonstrated that the Cu2+ adsorption process obeyed pseudo-second-order kinetics, and the adsorption performance was dependent on solution pH. The maximum adsorption capacity at the optimal pH 4.0 was 375.9 mg/g; equilibrium was reached rapidly within 35 min. From XPS, the reduction-oxidation between Fe0 and Cu2+ was occurred in the adsorption process, and Fe2+, Fe3+, and Cu0 was formed. In the recycling experiments, RhB was removed by the spent Cu adsorbent, with the removal performance being dependent on the initial Cu concentration, in the order of 5 mg/L > 20 mg/L > 0 mg/L > 100 mg/L > 500 mg/L. RhB removal also improved with increasing H2O2 concentration. More than 99.9% of the RhB was degraded within 8 min using 1.75 mM H2O2, which was a large improvement over the previously used catalyst. The hydroxyl radical was found to be the main free radical responsible for RhB degradation.
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Affiliation(s)
- Caiyun Han
- Guangxi Colleges and Universities Key Laboratory of Environmental-friendly Materials and New Technology for Carbon Neutralization, Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, School of Materials and Environment, Guangxi Minzu University, Nanning, 530105, China.
| | | | - Qin Shi
- Guangxi Colleges and Universities Key Laboratory of Environmental-friendly Materials and New Technology for Carbon Neutralization, Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, School of Materials and Environment, Guangxi Minzu University, Nanning, 530105, China
| | - Liying Liang
- Guangxi Colleges and Universities Key Laboratory of Environmental-friendly Materials and New Technology for Carbon Neutralization, Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, School of Materials and Environment, Guangxi Minzu University, Nanning, 530105, China
| | - Ting Yang
- Guangxi Colleges and Universities Key Laboratory of Environmental-friendly Materials and New Technology for Carbon Neutralization, Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, School of Materials and Environment, Guangxi Minzu University, Nanning, 530105, China
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, People's Republic of China
| | - Sufang He
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, People's Republic of China
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Khan H, Yerramilli AS, D'Oliveira A, Alford TL, Boffito DC, Patience GS. Experimental methods in chemical engineering: X‐ray diffraction spectroscopy—
XRD. CAN J CHEM ENG 2020. [DOI: 10.1002/cjce.23747] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Hayat Khan
- Chemical EngineeringPolytechnique Montréal Montréal Québec Canada
| | - Aditya S. Yerramilli
- School for Engineering of MatterTransport and Energy, Arizona State University Tempe Arizona USA
| | | | - Terry L. Alford
- School for Engineering of MatterTransport and Energy, Arizona State University Tempe Arizona USA
| | - Daria C. Boffito
- Chemical EngineeringPolytechnique Montréal Montréal Québec Canada
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Gomes AJ, Lunardi CN, Rocha FS, Patience GS. Experimental methods in chemical engineering: Fluorescence emission spectroscopy. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23506] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Anderson J. Gomes
- Laboratory of Photochemistry and NanobiotechnologyUniversity of BrasíliaBrasília Brazil
| | - Claure N. Lunardi
- Laboratory of Photochemistry and NanobiotechnologyUniversity of BrasíliaBrasília Brazil
| | - Fellipy S. Rocha
- Laboratory of Photochemistry and NanobiotechnologyUniversity of BrasíliaBrasília Brazil
- Department of Chemical EngineeringPolytechnique MontréalQC Canada
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