A ClO -mediated photoelectrochemical filtration system for highly-efficient and complete ammonia conversion

Recent Advances on Photocatalytic and Electrochemical Oxidation for Ammonia Treatment from Water/Wastewater

“…For instance, Ag/TiO 2 nanotube, SnO 2 / carbon nanotube, or metallic Ti 4 O 7 anode and Pd−Cu/Ni foam cathode have been integrated with commercial membranes, respectively. 115,134,135 These studies provide new rational designs of advanced continuous-flow EC oxidation systems for ammonia elimination from water.…”

“…They have developed a series of EC oxidation–membrane filtration system utilizing chlorine based radicals for complete elimination of ammonia and degradation of organic pollutants from water. For instance, Ag/TiO 2 nanotube, SnO 2 /carbon nanotube, or metallic Ti 4 O 7 anode and Pd–Cu/Ni foam cathode have been integrated with commercial membranes, respectively. ,, These studies provide new rational designs of advanced continuous-flow EC oxidation systems for ammonia elimination from water.…”

Ultrasonic role to activate persulfate/chlorite with foamed zero-valent-iron: Sonochemical applications and induced mechanisms

“…From Fig. 7 a, no •OH signal was observed in ClO 2 − and US-ClO 2 − , however, besides DMPO-X 1 signal, the remaining signal DMPO-X 3 (×) seemed to be closed to ClO• signal [46] and ClO•+Cl• signal [47] ; in addition, according to description of Ozawa et al [48] , combining with the DMPO-X 1 and DMPO-X 3 , it may contribute from oxidation of spin-traps by ClO 2 •; while according to the study of Nishikawa et al [49] , ClO x (x = 2, 3) radicals led to the above phenomenon. Due to the Cl(III) in ClO 2 − , an intermediate valence [50] , it could be explained as ClO x (x = 0–3) radicals contributed to the above-mentioned results.…”

Enhanced electro-peroxymonosulfate activation using a carbon nanotube filter with a functionalized polyelectrolyte

“…This promising technology has been demonstrated to be effective in various environmental applications such as detoxification of heavy metal ions, 25,26 mitigation of membrane fouling, and degradation of refractory organic contaminants. 5,[27][28][29] Regarding the electrode materials, CNT is a promising base material for preparing electrodes and membranes with sp 2 -hybridized carbon configuration, outstanding electric conductivity, desirable robustness, and high specific surface area. 30,31 Generally speaking, pure CNTs have relatively poor E-PMS activation activity, which is due to the low intrinsic density of the active sites.…”