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Ascorbic acid/Fe(0) composites as an effective persulfate activator for improving the degradation of rhodamine B

An ascorbic acid/Fe(0) composite (H(2)A/Fe(0))-activated persulfate (PS) process was provided for rhodamine B (RhB) removal. Experimental results demonstrated that the H(2)A/Fe(0)–PS system exhibits a rapid and continuous oxidation of organic contaminants, and shows great advantages over the convent...

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Autores principales: Wang, Xiangyu, Du, Yi, Liu, Huiling, Ma, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9079763/
https://www.ncbi.nlm.nih.gov/pubmed/35541219
http://dx.doi.org/10.1039/c8ra01506f
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author Wang, Xiangyu
Du, Yi
Liu, Huiling
Ma, Jun
author_facet Wang, Xiangyu
Du, Yi
Liu, Huiling
Ma, Jun
author_sort Wang, Xiangyu
collection PubMed
description An ascorbic acid/Fe(0) composite (H(2)A/Fe(0))-activated persulfate (PS) process was provided for rhodamine B (RhB) removal. Experimental results demonstrated that the H(2)A/Fe(0)–PS system exhibits a rapid and continuous oxidation of organic contaminants, and shows great advantages over the conventional Fe(0)–PS system by significantly improving removal efficiency. This H(2)A induced dramatic enhancement for RhB degradation could be attributed to both the reduction and chelating ability of H(2)A. The H(2)A/Fe(0) composites were characterized using TEM, FE-SEM, FTIR and XPS, indicating that the obtained H(2)A/Fe(0) composites were prepared successfully. Key factors affecting the treatment were determined for the H(2)A/Fe(0)–PS system, including H(2)A/Fe(0) dosage, PS dosage, initial solution pH and temperature. Moreover, radical quenching tests revealed that sulfate radicals (SO(4)˙(−)), hydroxyl radicals (˙OH) and superoxide radicals (O(2)˙(−)) were generated in the H(2)A/Fe(0)–PS system, and SO(4)˙(−) was the main radical species responsible for RhB degradation. Finally, possible degradation pathways are proposed. These findings prove that the H(2)A/Fe(0)–PS system may provide a simple and effective technology for improving the degradation of refractory organic pollutants.
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spelling pubmed-90797632022-05-09 Ascorbic acid/Fe(0) composites as an effective persulfate activator for improving the degradation of rhodamine B Wang, Xiangyu Du, Yi Liu, Huiling Ma, Jun RSC Adv Chemistry An ascorbic acid/Fe(0) composite (H(2)A/Fe(0))-activated persulfate (PS) process was provided for rhodamine B (RhB) removal. Experimental results demonstrated that the H(2)A/Fe(0)–PS system exhibits a rapid and continuous oxidation of organic contaminants, and shows great advantages over the conventional Fe(0)–PS system by significantly improving removal efficiency. This H(2)A induced dramatic enhancement for RhB degradation could be attributed to both the reduction and chelating ability of H(2)A. The H(2)A/Fe(0) composites were characterized using TEM, FE-SEM, FTIR and XPS, indicating that the obtained H(2)A/Fe(0) composites were prepared successfully. Key factors affecting the treatment were determined for the H(2)A/Fe(0)–PS system, including H(2)A/Fe(0) dosage, PS dosage, initial solution pH and temperature. Moreover, radical quenching tests revealed that sulfate radicals (SO(4)˙(−)), hydroxyl radicals (˙OH) and superoxide radicals (O(2)˙(−)) were generated in the H(2)A/Fe(0)–PS system, and SO(4)˙(−) was the main radical species responsible for RhB degradation. Finally, possible degradation pathways are proposed. These findings prove that the H(2)A/Fe(0)–PS system may provide a simple and effective technology for improving the degradation of refractory organic pollutants. The Royal Society of Chemistry 2018-04-03 /pmc/articles/PMC9079763/ /pubmed/35541219 http://dx.doi.org/10.1039/c8ra01506f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Wang, Xiangyu
Du, Yi
Liu, Huiling
Ma, Jun
Ascorbic acid/Fe(0) composites as an effective persulfate activator for improving the degradation of rhodamine B
title Ascorbic acid/Fe(0) composites as an effective persulfate activator for improving the degradation of rhodamine B
title_full Ascorbic acid/Fe(0) composites as an effective persulfate activator for improving the degradation of rhodamine B
title_fullStr Ascorbic acid/Fe(0) composites as an effective persulfate activator for improving the degradation of rhodamine B
title_full_unstemmed Ascorbic acid/Fe(0) composites as an effective persulfate activator for improving the degradation of rhodamine B
title_short Ascorbic acid/Fe(0) composites as an effective persulfate activator for improving the degradation of rhodamine B
title_sort ascorbic acid/fe(0) composites as an effective persulfate activator for improving the degradation of rhodamine b
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9079763/
https://www.ncbi.nlm.nih.gov/pubmed/35541219
http://dx.doi.org/10.1039/c8ra01506f
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