{"title":"利用造纸污泥生物炭活化过硫酸盐高效去除酸性橙 7：单线态氧主导机制","authors":"Hongtao Zhang, Shuhan Cai, Zehong Hu, Wang Qin, Fengtao Chen, Xin Zhang","doi":"10.1007/s10562-024-04863-z","DOIUrl":null,"url":null,"abstract":"<div><p>Excess sludge in the paper industry is a hazardous solid waste that requires urgent and proper disposal for environmental protection and resource utilization. In this study, a novel magnetic biochar (Fe-SDBC) synthesized from paper sludge through one-step pyrolysis was employed to activate persulfate (PDS) for the efficient removal of acid orange 7 (AO7). The results indicated that Fe-SDBC could effectively activate PDS to remove 97.8% of AO7 within 90 min, with 89.4% removed within 5 min. Fe-SDBC had unique properties with abundant adsorption and active sites, including iron-containing compounds and oxygen-containing functional groups. The addition concentrations of Fe-SDBC (0.5 g/L) and PDS (10 mM) were optimized based on response surface methodology. Furthermore, Fe-SDBC presented good stability over a wide range of pH (3 ~ 11) and reusability in cyclic experiments. Coexisting ions, such as CO<sub>3</sub><sup>2−</sup>, HCO<sub>3</sub><sup>−</sup>, and PO<sub>4</sub><sup>3−</sup>, had an inhibitory effect on AO7 removal. Both radical and non-radical pathways were proved to be involved in the Fe-SDBC/PDS system for AO7 removal, with singlet oxygen (<sup>1</sup>O<sub>2</sub>) being the dominant species. Additionally, the degradation pathways were investigated and toxicity assessment was evaluated. This work will provide a potential approach for paper sludge recycling in the wastewater treatment.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Efficient Removal of Acid Orange 7 by Activating Persulfate Using Paper Sludge Biochar: Singlet Oxygen-Dominated Mechanism\",\"authors\":\"Hongtao Zhang, Shuhan Cai, Zehong Hu, Wang Qin, Fengtao Chen, Xin Zhang\",\"doi\":\"10.1007/s10562-024-04863-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Excess sludge in the paper industry is a hazardous solid waste that requires urgent and proper disposal for environmental protection and resource utilization. In this study, a novel magnetic biochar (Fe-SDBC) synthesized from paper sludge through one-step pyrolysis was employed to activate persulfate (PDS) for the efficient removal of acid orange 7 (AO7). The results indicated that Fe-SDBC could effectively activate PDS to remove 97.8% of AO7 within 90 min, with 89.4% removed within 5 min. Fe-SDBC had unique properties with abundant adsorption and active sites, including iron-containing compounds and oxygen-containing functional groups. The addition concentrations of Fe-SDBC (0.5 g/L) and PDS (10 mM) were optimized based on response surface methodology. Furthermore, Fe-SDBC presented good stability over a wide range of pH (3 ~ 11) and reusability in cyclic experiments. Coexisting ions, such as CO<sub>3</sub><sup>2−</sup>, HCO<sub>3</sub><sup>−</sup>, and PO<sub>4</sub><sup>3−</sup>, had an inhibitory effect on AO7 removal. Both radical and non-radical pathways were proved to be involved in the Fe-SDBC/PDS system for AO7 removal, with singlet oxygen (<sup>1</sup>O<sub>2</sub>) being the dominant species. Additionally, the degradation pathways were investigated and toxicity assessment was evaluated. This work will provide a potential approach for paper sludge recycling in the wastewater treatment.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":508,\"journal\":{\"name\":\"Catalysis Letters\",\"volume\":\"155 1\",\"pages\":\"\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-11-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10562-024-04863-z\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-024-04863-z","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Efficient Removal of Acid Orange 7 by Activating Persulfate Using Paper Sludge Biochar: Singlet Oxygen-Dominated Mechanism
Excess sludge in the paper industry is a hazardous solid waste that requires urgent and proper disposal for environmental protection and resource utilization. In this study, a novel magnetic biochar (Fe-SDBC) synthesized from paper sludge through one-step pyrolysis was employed to activate persulfate (PDS) for the efficient removal of acid orange 7 (AO7). The results indicated that Fe-SDBC could effectively activate PDS to remove 97.8% of AO7 within 90 min, with 89.4% removed within 5 min. Fe-SDBC had unique properties with abundant adsorption and active sites, including iron-containing compounds and oxygen-containing functional groups. The addition concentrations of Fe-SDBC (0.5 g/L) and PDS (10 mM) were optimized based on response surface methodology. Furthermore, Fe-SDBC presented good stability over a wide range of pH (3 ~ 11) and reusability in cyclic experiments. Coexisting ions, such as CO32−, HCO3−, and PO43−, had an inhibitory effect on AO7 removal. Both radical and non-radical pathways were proved to be involved in the Fe-SDBC/PDS system for AO7 removal, with singlet oxygen (1O2) being the dominant species. Additionally, the degradation pathways were investigated and toxicity assessment was evaluated. This work will provide a potential approach for paper sludge recycling in the wastewater treatment.
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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