Enhanced removal of tris(2-chloroethyl) phosphate using a resin-based nanocomposite hydrated iron oxide through a Fenton-like process: Capacity evaluation and pathways

Water Research
Biming LiuHuaili Zheng

Abstract

The effective removal of organophosphorus compounds (OPs) effectively from water environment remains an important but challenging task. In this study, a resin-based nanocomposite of hydrated iron oxide (HD1) was used as Fenton-like catalyst for effectively catalyzing the decomposition of hydrogen peroxide to degrade tris(2-chloroethyl) phosphate (TCEP). The results showed that HD1 was successfully prepared, which had great versatility, catalytic performance and adsorption capacity. Besides, HD1/H2O2 was capable of degrading TCEP completely with less than 0.2 mg/L of inorganic phosphorus (IP) in the effluent at the initial TCEP of 38 mg/L, pH = 4, H2O2 dosage of 20 mM, and the Kobs could result in about 1.0530 min-1 under identical conditions. More attractively, inorganic ions (i.e., Cl-, CO32-, SO42-, NO3-, HCO3-, Ca2+, and Mg2+) exhibited moderate effect on TCEP degradation. The negative effect of natural organic matters (NOM) (i.e., HA) on the degradation of TCEP was responsible for competition for the active oxygen species. Combined with electron paramagnetic resonance (EPR) spectra, X-ray photoelectron spectroscopy (XPS) and other analytical methods and radical quenching experiments, the possible removal process of TCEP was...Continue Reading

Citations

Jan 29, 2021·Journal of Analytical Methods in Chemistry·Hui XiaYuesuo Yang
Jul 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hao PengYanhong Gong

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