This work focuses on removing hexachlorocyclohexanes (HCHs) found in groundwater polluted with dense non-aqueous phase liquids (DNAPLs) by photo-oxidation hydrogen peroxide or persulfate using LED visible light and ferrioxalate as the catalyst. Single oxidation tests were also performed to evaluate contribution of LED-vis HCHs removal. Results show that it is possible attain degradation up 85% ...

Bismuth oxyhalide, usually employed as a photocatalyst, has not been tested as an activator of peroxide for water purification. This work explores the potential application of bismuth oxyhalide (BiOX, X = Cl, Br, I)-activated peroxide (H2O2; peroxymonosulfate (PMS) and peroxydisulfate) systems for the degradation of carbamazepine (CBZ) in water destined for drinking water. BiOBr showed the high...

Novel flower-shaped C-dots/Co3O4{111} with dual-reaction centers were constructed to improve the Fenton-like reaction activity and peroxymonosulfate (PMS) conversion sulfate radicals. Due exposure of a high surface area Co3O4{111} facets, could provide more Co(II) for PMS activation than traditional spherical Co3O4{110}. Meanwhile, was preferred adsorption on facets because energy thereby facil...

The development of efficient heterogeneous persulfate activators is one the main research topics in wastewater treatment area. present work deals with activation sodium (SPS) using nickel oxide/strontium carbonate (NiO/SrCO3) for degradation sulfamethoxazole (SMX), a representative compound from group antibiotics. Results showed that NiO/SrCO3 exhibited high performance towards SPS, leading to ...

Organophosphorous (OP) chemical warfare nerve agents mainly sarin and tabun were used during the Iran-Iraq war with high mortalities. In addition to atropine and oximes, the followings have recently been used successfully for the treatment of OP poisoning. 1. Sodium Bicarbonate: Infusion of high doses of sodium bicarbonate (5 mEq/kg in 60 min. followed by 5-6 mEq/kg/day to obtain arterial blood...

Soil pollution has become a substantial environmental problem which is amplified by overpopulation in different regions. In this review, the state of art regarding use Advanced Oxidation Processes (AOPs) for soil remediation presented. This review aims to provide an outline recent technologies developed decontamination polluted soils using AOPs. Depending on process, these techniques have been ...

This study aims to investigate the repair effect of subcellular structure injuries of the HK-2 cells of four degraded seaweed polysaccharides (DSPs), namely, the degraded Porphyra yezoensis, Gracilaria lemaneiformis, Sargassum fusiform, and Undaria pinnatifida polysaccharides. The four DSPs have similar molecular weight, but with different content of sulfate groups (i.e., 17.9%, 13.3%, 8.2%, an...

Photocatalytic materials for photocatalysis is recently proposed as a promising strategy to address environmental remediation. Metal-free graphitic carbon nitride (g-C3N4), an emerging photocatalyst in sulfate radical based advanced oxidation processes. The solar-driven electronic excitations g-C3N4 are capable of peroxo (O?O) bond dissociation peroxymonosulfate/peroxydisulfate (PMS/PDS) and ox...