CoFe-LDO nanoparticles as a novel catalyst of peroxymonosulfate (PMS) for histidine removal

• Published in: Environmental science and pollution research international Vol. 29; no. 11; pp. 16517 - 16528
• Main Authors: Luo, Yuye, Liu, Cheng, Zhao, Meiqi
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2022; Springer Nature B.V
• Subjects: Algae; Amino acids; Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; By products; Carbon dioxide; Catalysts; Chlorine; Chromatography; Cobalt; Degradation; Degradation products; Disinfection; Dissolved organic nitrogen; Dosage; Drinking water; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Environmental science; Free radicals; High-performance liquid chromatography; Histidine; Iron; Liquid chromatography; Nanoparticles; Nitrogen; Optimization; Organic nitrogen; Oxidation; Oxides; Peroxides; pH effects; Research Article; Waste Water Technology; Water Management; Water Pollution Control; Water treatment; Drinking water treatment; Histidine; Peroxymonosulfate; Dissolved organic nitrogen; CoFe-LDO
• ISSN: 0944-1344; 1614-7499; 1614-7499
• DOI: 10.1007/s11356-021-16853-4

Dissolved organic nitrogen (DON) has been a research subject due to its potential to form nitrogenous disinfection byproducts (N-DBPs) in drinking water treatment. In our study, CoFe layered double oxide (CoFe-LDO) was selected as an effective catalyst for the removal of histidine by activation of peroxymonosulfate (PMS). The results investigated that the removal of DON and histidine within 1 h in the CoFe-LDO/PMS system were up to 61% and 72%, respectively. The influences of CoFe-LDO dosage, PMS dosage, and pH value for DON removal were also elucidated. The optimum pH was 8, and the optimal dosage of CoFe-LDO and PMS were 0.04 g/L and 0.5 mmol/L. It was found that SO 4 •− and •OH induced by the transformation of Co 2+ -Co 3+ and Fe 2+ -Fe 3+ on the catalyst surface were responsible for the degradation by ESR detection, in which SO 4 •− played a more important role. The degradation pathway of histidine indicated that it was partly oxidized to NH 4 + -N in the 60 min and no evident generation of N 2 during the whole process. Furthermore, degradation products of histidine have also been revealed by the analysis of HPLC-MS. In addition, the generation potentials of two typical N-DBPs were also clarified. The formation potential of dichloroacetonitrile (DCAN) decreased, while that of dichloroacetamide (DCAcAm) increased firstly before declining.