Due to the high viscosity and stickiness of dehydrated sludge, combination foaming pretreatment drying process is an effective method improve performance sludge. In this study, alkali industrial lignin fiber addition followed by mechanical whipping was employed for dewatered Using alone as agent, optimal NaOH found at 2.5 wt%, which superior adding CaO. Considering maximum efficiency, 2% FH-300...

HRČKOVÁ M., RUSŇÁKOVÁ M., ZEMANOVIČ J. (2002): Enzymatic hydrolysis of defatted soy flour by three different proteases and their effect on the functional properties of resulting protein hydrolysates. Czech J. Food Sci., 20: 7–14. Commercial defatted soy flour (DSF) was dispersed in distilled water at pH 7 to prepare 5% aqueous dispersion. Soy protein hydrolysates (SPH) were obtained by enzymati...

Polymers such as poly(lactic acid) (PLA), which have poor melt strength, are difficult to foam due to severe cell coalescence during foaming. We show that addition of a few percent of polytetrafluoroethylene (PTFE) particles can stabilize PLA foams against bubble coalescence and collapse. The particles and a chemical blowing agent, were dispersed into the PLA by extrusion, and then foamed by he...

Filamentous bacteria are a normal and necessary component of the activated sludge wastewater treatment process, but the overgrowth of filamentous bacteria results in foaming and bulking associated disruptions. Bacteriophages, or phages, were investigated for their potential to reduce the titer of foaming bacteria in a mixed-microbial activated sludge matrix. Foaming-associated filamentous bacte...

The objective of this work was to determine the effect of heat application on whey protein concentrate (WPC) in combination with hydroxypropylmethylcellulose (HPMC) addition to improve the foaming properties of the system and to relation these with the interfacial ones. Under these conditions 1 × 10-2 and 1% w/w of whey protein solutions were mixed with 1 × 10-2 and 1% w/w of polysaccharide. So...

To facilitate the design and development of porous metals, simulation of their mechanical behavior is essential. As an alternative to complex tomography procedures, a methodology has been developed to construct a simulated microstructure that retains the essential features of the experimental material. The target material is a moderate porosity titanium foam that is being developed as a bone im...

This study aims to develop a novel technique in manufacturing nanocomposite bimodal foams containing expandable polymeric microballoons. Low density polyethylene syntactic were prepared via injection molding process, afterwards, batch refoaming method was utilized create structure. The effects of microballoon and nanoclay content foaming time temperature on microstructure physical properties in...

The design of porous metal structures is of high interest for novel lightweight industrial applications. Synchrotron tomography in combination with 3D image analysis is the suitable method to investigate these structures. In order to bring the foam production process from the laboratory to industrial scales a detailed knowledge of the control parameters’ influence on the resulting pore structur...