Characteristics and application of iron-based materials in heterogeneous Fenton oxidation for wastewater treatment: a review

Abstract

Advanced oxidation processes (AOPs) in wastewater treatment have a wide range of applications for the removal of refractory organics due to their ability to generate reactive, non-selective radicals. In the...

Enhanced Fe(ii)/Fe(iii) cycle by boron enabled efficient Cr(vi) removal with microscale zero-valent iron

“…Recently, due to the characteristics of low cost, high abundance, and environmental benignity, ZVI is being developed to be a compelling solution to tackle environmental pollution problems, including advanced oxidation of organic pollutants, nutrient removal, heavy metal control, groundwater, and soil remediation. [1][2][3][4][5][6][7][8][9] In general, ZVI possesses a typical core-shell structure, including an iron core serving as an electron reservoir toward heavy metal reduction, and an iron oxide shell containing ample active complexation sites for heavy metal ions. 10 However, the heavy metal removal efficiency is unsatisfactory due to the ineffective electron transport from the iron core to the iron oxide shell.…”

Photocatalytic degradation of acid blue 74 by Co: WO3 nanoparticles: Kinetics and response surface methodology studies

“…Traditional methods of water treatment, including adsorption and precipitation, are not appropriate strategies for removing toxic substances and volatile organic compounds (VOCs) from water [ 3 , 4 ]. Advanced oxidation processes (AOPs), such as Fenton oxidation [ 5 ], electrochemical oxidation, photocatalysis have been studied for their ability to generate reactive, and non-selective radicals compared to adsorption, which is expected to have selectivity and large adsorption capacity [ 2 , 3 ]. Among these methods, photocatalysis, utilizing clean and inexhaustible light, has emerged as a promising AOP technique through oxidant precursor activation.…”

Low-cost one-pot synthesis of hydrophobic and hydrophilic monodispersed iron oxide nanoparticles

“…Superparamagnetic iron oxide nanoparticles (SPIONs) have been extensively investigated as promising candidates for numerous applications ranging from heavy metal removal, 1,2 wastewater treatment, 3–5 catalysis, 6,7 drug delivery, 8–10 contrast agents 11–13 and cancer treatment. 14–16 The promise stems from the fact that their saturation magnetization is remarkably high, and secondly, being superparamagnetic, the particles do not retain any net magnetism after the magnetic field is removed.…”