The primary degradation of a linear alcohol ethoxylate (AE) and a branched nonylphenol ethoxylate (NPE) was investigated in bench-scale activated sludge units treating a synthetic sewage feed. Biotreaters were gradually adapted to 10-100 mg/J surfactant and effluents monitored for loss of nonionic ethoxylate, foaming, feed BOD removal, nitrification and biosolids growth. Both surfactants were d...

The effects of different parameters on the hydrodynamics of trickle bed reactors were discussed for Newtonian and non-Newtonian foaming systems. The varying parameters are varying liquid velocities, gas flow velocities and surface tension. The range for gas velocity is particularly large, thanks to the use of dense gas to simulate very high pressure conditions. This data bank has been used to c...

Broken rice is an underutilized by-product of milling. Proteins prepared from broken rice by treatments with alkaline protease and papain have been characterized with regard to nutritional and functional properties. The protein content and the protein recovery were 56.45 and 75.45 % for alkaline protease treatment, and 65.45 and 46.32 % for papain treatment, respectively. Protease treatment inc...

Aluminum foam is usually used as the core of composite materials by combining it with dense materials, such as in Al foam core sandwich panels and Al-foam-filled tubes, owing to its low tensile and bending strengths. In this study, all-Al foam-filled tubes consisting of ADC12 Al-Si-Cu die-cast aluminum alloy foam and a dense A1050 commercially pure Al tube with metal bonding were fabricated by ...

We present a sharp-interface algorithm for simulating the diffusion-driven bubble growth in polymer foaming. A moving mesh of unstructured triangular elements tracks the expanding and deforming bubble surface. In the interior of the liquid, the mesh velocity is determined by solving a Laplace equation to ensure spatially smooth mesh movement. When mesh distortion becomes severe, remeshing and i...

* Corresponding author In recent years, lack of donor organs has caused many to consider tissue engineering methods as means to replace diseased or damaged organs. This newlyemerging field uses tissue-specific cells in a threedimensional organization, provided by a scaffolding material, to return functionality of the organ. For these applications, the choice of scaffolding material is crucial t...

Foaming and spill-out from the drive end of the rotating stainless steel cylinder oxygenator has been a serious problem, but sure remedies for both defects have been discovered. Oxygenation has always been 85 to 100% even with flow rates over 6 litres/minute. The machine was passed as safe for clinical use after test runs had been made on dogs in 1959, at which time the cause of oxygenator fail...

Many materials require functionally graded cellular microstructures whose porosity is engineered to meet specific requirements of diverse applications (e.g. polymers and/or ceramics that mimic biological material such as soft tissue and bone). It has been shown in previous work that the bubble growth rate of a polymeric foam can be influenced by the surrounding acoustic environment and, once so...

Ren J., Song Ch.-L., Wang P., Li S., Kopparapu N.-K., Zheng X.-Q. (2015): Modification of structural and functional properties of sunflower 11S globulin hydrolysates. Czech J. Food Sci., 33: 474–478. The structural and functional properties such as solubility, emulsifying properties, foaming properties, oil binding capacity, and surface hydrophobicity of sunflower 11S globulin hydrolysates gene...