Comparison of four oxidants activated through tetraacetylethylenediamine for developing sustainable and rapid degradation of organic dye

Abstract

Four common oxidants, including hydrogen peroxide (H 2 O 2), sodium percarbonate (SPC), sodium perborate (SPB) and sodium persulphate (SPS), were activated with tetraacetylethylenediamine (TAED) to degrade an azo dye, CI Reactive Red 195, in water, for building a novel and rapid oxidative system comprising the merits of cost-effectiveness and high sustainability. Elevated temperature and high pH level

Exploring a Substitute for Hydrogen Peroxide in Fenton Process – A Case Study on the COD Removal of Acid Orange 8

“…27 However, for a clear un-cess. [18][19][20] The difference among these three oxidants is the presence of different groups adjacent to the peroxo-bond (-O-O-). While it is hydrogen atoms on both sides of the peroxo-bond in HP, tert-butyl on one side in TBHP and dihydroxyboranyl on both sides in SPB (Fig.…”

“…24 The reagent possesses low toxicity and a longer self-life and has been used as a substitute for HP in organic synthesis. 20 SPB when dissolved in water releases sodium metaborate and H 2 O 2 (Eq. ( 5)).…”

“…( 5)). 20,24 Thus, the presence of catalysts like Fe 2+ in aqueous acidic SPB solution would establish Fenton process, which leads to the generation of HO • . 25 The degradation of cytarabine antineoplastic was studied by the photoactivation of TBHP and SPB 26 and the efficiency of oxidants was established to be: HP>SPB>TBHP.…”

Rapid decolorisation of dyeing wastewater by FeIII(2,2′:6′,2″‐terpyridine)activated peroxymonosulphate

“…[15][16][17] By activating oxidants to create active species such the hydroxyl radical (ÁOH, 1.9-2.7 eV), sulphate radical (SO 4 À Á, 2.5-3.1 eV), superoxide radical (O 2 Á À ) and singlet oxygen ( 1 O 2 ), etc., advanced oxidation procedures can eliminate pollutants. 18,19 Because they are highly reactive and are not coupled with any electrons, these active species have a significant ability to remove contaminants. 20 Persulphate as a common oxidant can produce ÁOH, SO 4 À Á and 1 O 2 , as well as other active species.…”

“…The remediation of water contaminants using AOPs in chemical processes is thought to be effective and promising 15–17 . By activating oxidants to create active species such the hydroxyl radical (·OH, 1.9‐2.7 eV), sulphate radical (SO 4 − ·, 2.5‐3.1 eV), superoxide radical (O 2 · − ) and singlet oxygen ( 1 O 2 ), etc., advanced oxidation procedures can eliminate pollutants 18,19 . Because they are highly reactive and are not coupled with any electrons, these active species have a significant ability to remove contaminants 20 .…”