Hydrated Electrons Trigger the Breakdown of Recalcitrant Cyanuric Acid in Wastewater DOI
Xin Luo, Wenxiao Zheng,

Q. Li

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Cyanuric acid (CA), a triazine-ring compound commonly used as stabilizer for free chlorine to enhance disinfection, often persists in wastewater the production of chlorinated cyanurates (Cl-CAs), posing challenges treatment. This study demonstrates that conventional advanced oxidation processes (UV/H2O2 and UV/peroxydisulfate) are ineffective degrading CA, while UV/sulfite system successfully achieves its breakdown. Hydrated electrons (eaq-) were identified primary reactive species responsible cleaving stable triazine ring, with minimal contributions from SO3•- H•. The pH value influences both activity eaq- degradability CA by altering structure; lower increases electron-deficient regions dihydrogen enhancing susceptibility nucleophilic attack eaq-. high concentrations Cl- can inhibit removal, likely due formation react sulfite suppress production. Effective degradation was also demonstrated real wastewater, highlighting sustainable solution water These findings offer valuable insights into transformation present effective approaches eliminating emerging contaminants context extensive use disinfectants.

Language: Английский

Overcoming Fe(III) precipitation barrier in acid mine drainage via a visible light-assisted photo-electrochemical system DOI
Yang Wang,

Ziyuan Huang,

Yan Zhang

et al.

Water Research, Journal Year: 2025, Volume and Issue: unknown, P. 123193 - 123193

Published: Jan. 1, 2025

Language: Английский

Citations

0
Microstructure and molecular mechanism of chromium retention to schwertmannite in acidic sulfate environments DOI

Wenying Zhang,

Lu Han,

Shuqing Peng

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132934 - 132934

Published: April 1, 2025

Language: Английский

Citations

0
Stable and Affordable Phosphonates Removal by Iron Scrap Packed-bed Anode Electrocoagulation under Realistic Conditions: Mechanism and Passivation Mitigation over Long-term Operation DOI
Haiyang Hu,

Jiayu Luo,

Li He

et al.

Water Research, Journal Year: 2025, Volume and Issue: 275, P. 123195 - 123195

Published: Jan. 23, 2025

Language: Английский

Citations

0
Hydrated Electrons Trigger the Breakdown of Recalcitrant Cyanuric Acid in Wastewater DOI
Xin Luo, Wenxiao Zheng,

Q. Li

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Cyanuric acid (CA), a triazine-ring compound commonly used as stabilizer for free chlorine to enhance disinfection, often persists in wastewater the production of chlorinated cyanurates (Cl-CAs), posing challenges treatment. This study demonstrates that conventional advanced oxidation processes (UV/H2O2 and UV/peroxydisulfate) are ineffective degrading CA, while UV/sulfite system successfully achieves its breakdown. Hydrated electrons (eaq-) were identified primary reactive species responsible cleaving stable triazine ring, with minimal contributions from SO3•- H•. The pH value influences both activity eaq- degradability CA by altering structure; lower increases electron-deficient regions dihydrogen enhancing susceptibility nucleophilic attack eaq-. high concentrations Cl- can inhibit removal, likely due formation react sulfite suppress production. Effective degradation was also demonstrated real wastewater, highlighting sustainable solution water These findings offer valuable insights into transformation present effective approaches eliminating emerging contaminants context extensive use disinfectants.

Language: Английский

Citations

0