The work focuses on evaluating wet air oxidation and catalytic wet air oxidation technique to degrade refinery spent caustics (original COD is 250,781 mg/L) in a milder operation conditions (150-200 ̊C, 0.2-2.5MPa). The results show that: in non-catalyst WAO, the highest COD degradation conversion could reach about 75% when 200 ̊C, 2MPa oxygen and 300rpm were used. At every temperature, the react...

The development of chemical means of detoxification of pesticide wastes and spills is an increasingly important endeavor for the pesticide industry. The objective of this paper is to review some of the chemical degradation methods for pesticide decontamination that exist today. I n presenting each method, less emphasis has been put on technical detail of the method and more emphasis has been pu...

This paper reported the fabrication of ternary metallic PtPdBi hollow nanocatalyst through a facile, one-pot, wet-chemical method by adopting sodium borohydride and polyvinylpyrrolidone as reducing agent and surfactant directing agent, respectively. The hollow structure offers novel morphology and large surface areas, which are conducive to enhancing the electrocatalytic activity. The electroca...

Porous alumina films formed by aluminum anodic oxidation have been intensively studied to use them as molds to form nanowires or dots. Recently we established the formation of porous alumina on solid substrates such as Si, and found a formation of an ordered aluminum hexagonal dot array after finishing of anodic oxidation on a SiO2 substrate. We investigated AFM nanoindentation to control the i...

Silicon nanostructures along @011# direction with upside down triangle cross sections on the top of the sawtooth structure with ~111! facets are prepared by using the lithography technique, reactive ion etching, and anisotropic wet chemical etching. These triangle-shaped silicon nanostructures are thermally oxidized in dry oxygen over a range of temperature from 850 to 1000 °C, which is charact...

nano-sized titanium dioxide tio2 powder was prepared by new wet chemical route from its precursor titanium (iv) chloride (ticl4) as precursor with isopropoxy alcohol in presence of nitric acid under ambient condition. their morphologies, phase compositions and components of the tio2 nanoparticles were characterized by transmission electron microscopy (tem), field emission scanning electron micr...

1. Hepatocytes isolated from starved rats and incubated without other substrates oxidized ethanol at a rate of 0.8-0.9mumol/min per g wet wt. of cells. Addition of 10mm-lactate increased this rate 2-fold. 2. Quinolinate (5mm) or tryptophan (1mm) decreased the rate of gluconeogenesis with 10mm-lactate and 8mm-ethanol from 0.39 to 0.04-0.08mumol/min per g wet wt. of cells, but rates of ethanol ox...

Aqueous wastes containing organic pollutants can be eciently treated by wet air oxidation (WAO), i.e. oxidation (or combustion) by molecular oxygen in the liquid phase, at high temperature (200±325 C) and pressure (up to 175 bar). This method is suited to the elimination of special aqueous wastes from the chemical industry as well as to the treatment of domestic sludge. It is an enclosed proce...

Treatment of polluted industrial wastes is one of the challenging research topics that occupy an important position in various chemical processes. Wet Air Oxidation (WAO) is one of the emerging processes suited for the treatment of special aqueous wastes. The system consists of an oxidation in the liquid phase of the organic matter by molecular oxygen at high temperature (200-325°C) and high pr...

Oxidized mercury (Hg(II)) is chemically produced in the atmosphere by oxidation of elemental mercury and is directly emitted by anthropogenic activities. We use the GEOS-Chem global chemical transport model with gaseous oxidation driven by Br atoms, to quantify how surface deposition of Hg(II) is influenced by Hg(II) production at different atmospheric heights. We tag Hg(II) 10 chemically produ...