Strong enhancement of trichloroethylene degradation in ferrous ion activated persulfate system by promoting ferric and ferrous ion cycles with hydroxylamine

Efficient degradation of sulfamethoxazole by the Fe(II)/HSO5− process enhanced by hydroxylamine: Efficiency and mechanism

“…It is possible that HA competed for and consumed PMS directly (Han et al, 2014). Therefore, HA and Fe(II) both should play a role in accelerating removal of SMX in the HA/Fe(II)/PMS process (Wu et al, 2015). The incomplete degradation of SMX in the HA/Fe(II)/PMS process might be due to the depletion of PMS (Zou et al, 2013).…”

“…Chen et al (2011) reported that hydroxylamine (NH2OH, HA) could effectively accelerate the redox cycle of Fe(III) to Fe(II). Owing to the low rate constants with SO4 •- (Neta et al, 1988) and HO • (Buxton et al, 1988), protonated HA can improve the degradation of benzoic acid (Zou et al, 2013), trichloroethylene (Tan et al, 2012), diuron (Wu et al, 2015), and Orange G (Han et al, 2014), as well as reducing the dosage of Fe(II) in Fe(II)/PMS or Fe(II)/PS system. To the best of our knowledge, few literature reported the enhancement of HA on the capacity of Fe(II)/PMS process applied in the pollution remediation of antibiotics.…”

Degradation of aquatic sulfadiazine by Fe0/persulfate: kinetics, mechanisms, and degradation pathway

“…, and weaken the oxidative activity of PS. 37 Nitrate anion always exhibited serious inhibiting effects on SDZ removal by Fe 0 /PS with increasing nitrate. 24 Nitrate was easily reduced by Fe 0 and the reactivity between Fe 0 and PS was decreased for the competition of nitrate.…”

Integration of microbial reductive dehalogenation with persulfate activation and oxidation (Bio-RD-PAO) for complete attenuation of organohalides

“…PAO has emerged as an effective and efficient technique for removing chlorinated aliphatic hydrocarbons, particularly chlorinated olefins and chlorinated alkanes. For example, thermal activation of persulfate has been identified as an effective technique to remediate organohalide-contaminated groundwater, in which chlorinated olefins (e.g., PCE or TCE) and brominated alkanes (e.g., HBCD) can be degraded entirely (Waldemer et al, 2007;Yuan et al, 2014;Wu et al, 2015;Dong et al, 2019;Li et al, 2019).…”