Mechanistic study of oxidative removal of bisphenol A by pristine nanocatalyst Mn3O4/peroxymonosulfate

Activation of O2 over three-dimensional manganese oxide nanoprisms under ambient conditions towards oxidative removal of aqueous organics

“…The reaction conditions, other additive, degradation efficiency and time are listed in Table 1. 84–90 When air was used as the oxidant, Ce–Bi-OMS-2-8 wt% demonstrated the highest degradation efficiency. Other reported examples indicate that only PMS or PDS was used as the oxidant; good degradation results were obtained.…”

Thermal activation significantly improves the organic pollutant removal rate of low-grade manganese ore in a peroxymonosulfate system

“…The BQ were selected to detect the existence of O 2 ˙ − ( k 2 (BQ, O 2 ˙ − ) = 0.9–1.0 × 10 9 M −1 s −1 ), while l -His and FFA were selected as scavengers for 1 O 2 (( k 2 (FFA, 1 O 2 ) = 1.2 × 10 8 M −1 s −1 ), ( k 2 ( l -his, 1 O 2 ) = 3.2 × 10 7 M −1 s −1 )). 57–59 Fig. 6(c) shows that l -his and FFA could significantly inhibit AO7 degradation, especially l -his, in which the inhibition rate reached 82.1%.…”

“…The BQ were selected to detect the existence of O 2 c À (k 2 (BQ, O 2 c À ) ¼ 0.9-1.0 Â 10 9 M À1 s À1 ), while L-His and FFA were selected as scavengers for 1 [57][58][59] Fig. 6(c) shows that L-his and FFA could signicantly inhibit AO7 degradation, especially L-his, in which the inhibition rate reached 82.1%.…”

“…The SO 4 c À could be converted into cOH and SO 5 c À through the reactions of eqn (10) and (11), thus increasing the content of cOH and SO 5 c À in the system. Simultaneously, cOH and SO 5 c À could generate 1 O 2 (eqn (20) and ( 21)), 11,58 which is the main active species for AO7 degradation, via the quenching experiment and EPR verication.…”

Emerging Trends in the Remediation of Persistent Organic Pollutants Using Nanomaterials and Related Processes: A Review

“…The nanocomposite shows the stability of Mn 3 O 4, long-term performance, and eight cycles of reusability with only an 11% reduction in BPA removal. The activated-sludge inhibition method used to check the toxicity of BPA after degradation was shown to be significantly repressed [116].…”