Effect of inorganic and organic solutes on zero-valent aluminum-activated hydrogen peroxide and persulfate oxidation of bisphenol A

摘要: The effect of varying inorganic (chloride, nitrate, sulfate, and phosphate) organic (represented by humic acid) solutes on the removal aqueous micropollutant bisphenol A (BPA; 8.8 μM; 2 mg/L) with oxidizing agents hydrogen peroxide (HP; 0.25 mM) persulfate (PS; activated using zero-valent aluminum (ZVA) nanoparticles (1 g/L) was investigated at a pH 3. In absence solutes, PS/ZVA treatment system superior to HP/ZVA in terms BPA rates kinetics. Further, process not affected nitrate (50 mg/L) addition, whereas chloride (250 mg/L) exhibited no process. negative anions generally speaking increased increasing charge following order: NO3- (no inhibition) < Cl- (250 mg/L) = SO42- < PO43- for Cl- (250 mg/L; inhibition) < NO3- < SO42- < PO43- PS/ZVA. Upon addition 20 mg/L acid representing natural matter, removals decreased from 72 100% 24 57% treatments, respectively. solute mixture containing all together partly suppressed inhibitory effects phosphate decreasing 46 43% after Dissolved carbon were obtained range 30 47% (the process), as well 47 process) experiments presence mixture, relative Vibrio fischeri photoluminescence inhibition particularly system, which higher performance than system.