A study on the mechanism of oxidized quinoline removal from acid solutions based on persulfate–iron systems

Abstract

Quinoline (Qu) and its derivatives have been widely regarded as hazardous pollutants in the world because of their acute toxicity to humans and animals, and potential carcinogenic risks.

Degradation of Aqueous Quinoline Using Persulfate Activated by γ‐Fe2O3@Carbon Composites and Enhanced by UV Irradiation

“…5,8‐quinolinedione was oxidized to ring‐opening and then generated 2,3‐pyridinedicarboxaldehyde whose aldehyde group continue to be oxidized into carboxyl group, forming pyridinedicarboxylicacid and further be converted to oxalic acid, acetic acid, formic acid and other organic acids till finally mineralized into CO 2 and H 2 O. This approach is consistent with existing studies [19,32] . Secondly, the pH value of the solution decreased with quinoline decomposing.…”

“…This approach is consistent with existing studies. [19,32] Secondly, the pH value of the solution decreased with quinoline decomposing. Under acidic conditions, quinoline was inclined to react with H + to form quinoline cation, which was then added with * OH and further oxidized into 2(1H)-quinolinone.…”

N-Oxidation of the Quinoline by Peroxy Acids in the Organic Solvents

“…Реакції окиснення піридину та його похідних пероксидними сполуками описані в [10][11][12][13], однак вплив реакційного середовища на ці процеси маловивчені. В останніх працях з вивчення окиснення ХН та інших органічних сполук процес проводили у водних розчинах як окисних, здебільшого застосовували пероксиоцтову кислоту [14][15][16][17]. Розчинник, який застосовують в реакції, буде впливати на швидкість і на вихід продуктів окиснення.…”