Oxidation of dilute TCE vapors in a foam reactor using Fenton’s reagent was investigated. The new process relies on rapid mass transfer from the gas undergoing treatment to a fine aqueous foam and oxidation by Fenton’s reagents. Laboratory investigations demonstrated that TCE elimination capacity was as high as 56–61 g TCE m reactorh 1 with a removal efficiency of 62% and TCE mineralization of ...

in this paper, the properties and microstructure of foam glasses obtained from the wasted cathode ray tube (crt) display panels were investigated. the foam glasses were prepared at the temperatures of 850, 950 and 1050c using 2, 4, 6 and 8 wt.% silicon carbide (sic) as the foaming agent. the physical and mechanical properties of the samples including the density, porosity, four-point bending s...

The aim of this work was to evaluate the physicochemical properties of fresh foams based on egg white proteins, xanthan gum and gum Arabic. The distributions of the size of gas bubbles suspended in liquid were determined, as well as density and volume fraction of gas phase of the generated foams. Additionally, the viscoelastic properties in the linear range were measured, and the results were a...

abstract management of water resources in iran is faced with growing demand for water resources, a considerable increase in the costs of supplying additional water and uncontrolled exploitation of underground waters. economists suggest water pricing to improve water use efficiency; however, government tends to reject that advice due to political risk, economic and cultural concerns. we used a p...

In 2015, Legionnaires' disease was diagnosed in a street cleaning worker. We found Legionella pneumophila serogroup 1 in the water and internal foam from the tanks of 2 trucks used by the worker during the incubation period. The internal foam was removed, and a Legionella prevention program was implemented.

This review gives an overview of the current knowledge concerning the problem of foam formation in the process of anaerobic digestion in biogas plants that utilize renewable resources or biogenic waste material for biogas production. Process upsets in biogas production induced by foam formation can have a negative impact on the efficiency of biogas plants. The foam can block gas pipes and cause...

Several species of arthropods prey upon or utilize foam nests made by leptodactylid frogs. A spider [Lycosa pampeana) enters burrows made by Leptodactylus iatinasus in Argentina and eats most of the eggs. Two genera of dytiscid beetles have representatives that lay eggs on the foam mass Q^ Physalaemus pustulosas in Guatemala; beetle larvae hatch and swim in temporary ponds, where they feed on f...

Jatropha curcas is a multipurpose tree, which has potential as an alternative source for biodiesel. All of its parts can also be used for human food, animal feed, fertilizer, fuel and traditional medicine. J. curcas seed cake is a low-value by-product obtained from biodiesel production. The seed cake, however, has a high amount of protein, with the presence of a main toxic compound: phorbol est...

An instrument was designed and assembled with the aim of measuring macroscopic properties of foams ~such as foamability and stability! under high pressures and moderate temperatures ~up to 105 bar and 425 K, respectively!. The device makes use of infrared sensors to detect the foam forefront position as it is generated by gas sparging in the foaming solution. The measurement makes use of a modi...

Vacuum foam drying is evaluated as an alternative for lyophilization for enhanced process and storage stability of bovine serum albumin. The protein protective efficiency of different stabilizers was compared in vacuum foam drying and lyophilization. Sucrose mixtures produced better foam characters than mannitol. Unlike calcium lactate, incorporation of polyvinyl pyrrolidone to sucrose synergis...