Combination of electro-Fenton (EF) process with other advanced oxidation processes (AOPs) is found very much effective for water and wastewater treatment. The combined including sono-EF (SEF), photo-EF (PEF), electro-peroxone, ferrate-EF EF persulfate allow enhancing the mineralization efficiency treatment as well reducing operational cost toxicity treated wastewater. Even though, there are sev...

The development of slow-release chemical oxidants for sub-surface remediation is a relatively new technology. Our objective was to develop slow-release persulfate-paraffin candles to treat BTEX-contaminated groundwater. Laboratory-scale candles were prepared by heating and mixing Na(2)S(2)O(8) with paraffin in a 2.25 to 1 ratio (w/w), and then pouring the heated mixture into circular molds that...

BACKGROUND Hairdressers are at risk for occupational respiratory diseases, but the risk factors, causal agents, and underlying mechanisms are not completely defined. AIM To describe the features of a large group of hairdressers consecutively referred to our center for suspected occupational asthma (OA) over an 8-year period, the type of occupational respiratory diseases, the etiologic agents,...

Remediation of hydrocarbon contaminated soils can be performed both in situ and ex situ using chemical oxidants such as sodium persulfate. Standard methods for quantifying persulfate require either centrifugation or prolonged settling times. An optimized soil extraction procedure was developed for persulfate involving simple water extraction using a modified disposable syringe. This allows cons...

OBJECTIVE Hairdressers have an increased risk for airway symptoms especially when using hair-bleaching powder containing persulfate. To minimize exposure, dust-free bleaching powder (DFP) has been made available. We studied the effects of regular powder (RP) or DFP on the airway symptoms of hairdressers with hair-bleaching associated rhinitis. METHODS Twelve hairdressers each performed three ...

In this paper, we demonstrate for the first time that poly(m-phenylenediamine) (PMPD) nanospheres and nanorods can be selectively synthesized via chemical oxidation polymerization of m-phenylenediamine (MPD) monomers using ammonium persulfate (APS) as an oxidant at room temperature. It suggests that the pH value plays a critical role in controlling the the morphology of the nanostructures and f...

Adsorption process has proven its efficiency in the abatement of pharmaceuticals liquid media, even if large volumes wastewater need to be treated. Nevertheless, exhausted adsorbent regeneration is economically and environmentally necessary. For this reason, recent studies are aimed at finding new methods regeneration. In study, an on-site adsorption-regeneration method was assessed. Initially,...

This study proposed a sequential redox process to partially degrade tetrabromobisphenol A (TBBPA) within reactor great extent. After 72 hours in an anoxic environment, 20 ppm of TBBPA could be effectively degraded by sulfurized zerovalent iron nanoparticles (S-nZVI) at concentrations 2 g L-1 and 4 L-1. Biphenol (BPA) together with tri-, di-, monobromobisphenol was detected high-performance liqu...

Magnetic CuFe2O4 powder obtained by sol−gel method and coupled photocatalysis was used to activate peroxydisulfate for tetracycline (TC) removal. A scanning electron microscope, X−ray diffraction Raman spectroscopy FT−TR were characterize the catalysts. The degradation efficiency stability of TC highest under neutral conditions. rate reached 91.1% within 90 min. removal total organic carbon rea...