Abstract In this study, low-cost siderite was used to activate peroxydisulfate (PDS, S2O82-)-inactivated Enterococcus faecalis study the inactivation characteristics and mechanism of siderite/PDS. The results showed that siderite/PDS had a better effect on at pH 3. sterilization increases with increase dosage, PDS concentration temperature. rate is decreased initial bacterial concentration. Ino...

In this research, novel conductive nanocomposites containing urethane acrylate (UA) andpolyaniline/copper (II) oxide nanocomposites (PANi-CuO) were synthesized. At firstpolyaniline/CuO nanocomposites with different amount of CuOnanoparticleswere prepared bychemical oxidationpolymerization of aniline using ammonium peroxydisulfate as an oxidizingagent. Afterward, UA-PANi-...

Ibuprofen (IBU), a nonsteroidal anti-inflammatory drug, is one of the most widely used and frequently detected pharmaceuticals personal care products in water bodies. This study examined IBU degradation aquatic solutions via ferric ion activated peroxydisulfate (PDS) coupled with electro-oxidation (EC/Fe3+/PDS). The mechanisms involved three synergistic reactions EC/Fe3+/PDS system, including: ...

BACKGROUND Cosmetics for bleaching, waving/relaxing and dyeing hair contain well-known allergens, leading to a substantial number of cases of allergic contact dermatitis. OBJECTIVE To compare the frequency of important contact allergens (i) between two distinct groups of exposed patients, and (ii) with previous surveillance data. METHODS On the basis of data collected by the Information Net...

Cytochrome o can be chemically reduced by excess dithionite and oxidized by ferricyanide and ammonium persulfate. The latter reagent is colorless and allows spectral observations in the Soret region. The spectrum of the “oxygenated” form of the reduced cytochrome, which has absorption maxima at 576, 543, and 414 nm, is elicited in aerobic solution by enzymatic reduction with NADH, and when form...

In this article, we synthesize of a novel starch-based superabsorbent hydrogel via graft copolymerization of mixtures of acrylic acid (AA) and 2-Hydroxy ethyl methacrylate (HEMA) onto starch backbones. The polymerization reaction was carried out in an aqueous medium and in the presence of ammonium persulfate (APS) as an initiator and N,N’-methylene bisacrylamide (MBA) as a crosslinker. The hydr...

BACKGROUND Occupational and environmental factors may be a cause of nonasthmatic eosinophilic bronchitis (NAEB). The diagnosis of occupational NAEB requires evidence of sputum eosinophilia. Nevertheless, a minority of patients are not able to produce suitable sputum specimens. METHODS This case report describes a 25-year-old woman, working as a hairdresser since the age of 20 years and handli...

In this study, both wood flour (WF) and flour-derived biochar (WFB) were used as supports for Fe3O4 to activate peroxydisulfate (PDS). The role of different carriers was investigated emphatically from the aspects catalyst properties, degradation kinetics bisphenol A (BPA), effects important parameters, generation reactive oxygen species (ROS). Results showed that WF WFB could serve good support...

Electrochemically activating peroxydisulfate (PDS) can eliminate organic pollution using electron as activator without the involvement of byproducts. Notwithstanding, process suffered from long hydraulic retention time, and activation regime remained unclear. Herein, Pd/Al2O3 catalyst particle electrode for initiating PDS oxidation in cathodic cell degrade various pollutants with varying kineti...