Hydroxylamine enhanced treatment of highly salty wastewater in Fe0/H2O2 system: Efficiency and mechanism study

Removal of persistent textile dyes from wastewater by Fe(ii)/H2O2/H3NOH+ integrated system: process performance and limitations

“…Hydroxylamine exhibited signicant promotion of the degradation of benzoic acid, tartrazine and glycerin by the Fenton system. [18][19][20] The same statement has been proven by Liu et al 21 and Zou et al 22 when the degradation of sulfamethoxazole and benzoic acid was carried out with Fe(II)/HOSO 5 À (i.e., a sulfate radical-based AOP) in the presence of hydroxylamine. Both SO 4 c À radicals and cOH radicals were considered the primary reactive oxidants for the degradation of sulfamethoxazole and benzoic acid in the Fe(II)/HOSO 5 À -H 3 NOH + process, as conrmed by experiments with electron spin trapping and alcohol quenching tests.…”

“…Hydroxylamine exhibited significant promotion of the degradation of benzoic acid, tartrazine and glycerin by the Fenton system. 18–20 The same statement has been proven by Liu et al 21 and Zou et al 22 when the degradation of sulfamethoxazole and benzoic acid was carried out with Fe( ii )/HOSO 5 − ( i.e. , a sulfate radical-based AOP) in the presence of hydroxylamine.…”

“…Even though the accelerating effect of hydroxylamine on the efficiency of the Fenton system is well established, [17][18][19][20][21][22]24,25 as stated above, the limits of the accelerating effect have not been well demonstrated, particularly when pollutant degradation is carried out in water matrices other than deionized water. The process conditions and the quality of the water matrix are the main factors controlling the positive effect of hydroxylamine toward the efficiency of the Fe(II)/H 2 O 2 process.…”

Treatment of refractory organics in biologically treated landfill leachate by a zero valent iron enhanced Peroxone process: Degradation efficiency and mechanism study

“…The Fe 2+ produced from ZVI under acidic conditions can activate H 2 O 2 to produce·HO . according to previous studies (Bu et al, 2021; Niu et al, 2019), and then the Fe 2+ is oxidized to Fe 3+ . Therefore, the ZVI corrosion properties and the releasing characteristics of Fe ions (Fe 2+ and Fe 3+ ) were investigated in this study.…”

Photo-Fenton and oxygen vacancies' synergy for enhancing catalytic activity with S-scheme FeS2/Bi2WO6 heterostructure

“…When H 2 O 2 reacts with Fe 2+ , a large amount of ˙OH can be generated in the system, which can be further oxidized and decomposed. 7,8 Then the essence of Fenton oxidation technology is the reaction of ˙OH with organic pollutants to decompose them into small molecules that are not harmful to the environment. However, the Fenton oxidation process uses more chemicals in the sewage treatment process, has a long treatment period and easily causes secondary pollution, which takes a long time, has weak oxidation ability, and cannot be treated completely at one time.…”