Many systems contain populations of individuals. Often, they are regarded as a lumped phase, which might, for some applications, lead to inadequate model predictive power. An alternative framework, Population Balance Models, has been used here to describe such a system, activated sludge flocculation in which particle size is the property one wants to model. An important problem to solve in popu...

The combination of single cells to form doublets is regarded as the rate-limiting step of flocculation and requires the presence of surface proteins in active form. The process of activation of the flocculation proteins of yeast cells is described in the frame of the autocrine interaction regime (Science 224 (1984) 1312). The influence of several effectors (the cell efficiency to use sugars, th...

The combination of single cells to form doublets is regarded as the rate-limiting step of flocculation and requires the presence of surface proteins in active form. The process of activation of the flocculation proteins of yeast cells is described in the frame of the autocrine interaction regime (Science 224 (1984) 1312). The influence of several effectors (the cell efficiency to use sugars, th...

Energy consumption and water resource in the cultivation and harvesting steps still need to be minimized for the popularization of the microalgae-based products. An efficient electro-flocculation method for harvesting Dunaliella Salina integrated with local sand has been successfully applied. Sand was effective for speeding up the processes of flocculation and sedimentation of algal flocs and t...

Flocculation is an attractive property for Saccaromyces cerevisiae, which plays important roles in fermentation industry and environmental remediation. The process of flocculation is mediated by a family of cell surface flocculins. As one member of flocculins, Flo1 is characterized by four families of repeats (designated as repeat units A, B, C and D) in the central domain. It is generally acce...

2015 Flocculation technologies offer significant benefits to industrial mammalian cell culture processes, including increased clarification efficiency, impurity removal and process simplification. In this paper, the application and performance of flocculation technologies employed in the harvest process of monoclonal antibody Chinese hamster ovary cell culture are reviewed. Attention has been p...

years prior to the activated sludge researches which date from the work of Fowler and Mumford on the bacterial clarification of sewage employing a new iron bacterium, 1 MyQuite recently Heukelekian (1941) has reviewed the present state of our knowledge of mechanical flocculation and bioflocculation of sewage, and concluded that the flocculation is brought about both by physical and biological a...

Oskar Weltmann (1930) showed that human blood serum diluted in distilled water in the proportion of 1 :50 does not become turbid at the temperature of boiling water. In the Weltmann reaction the degree of flocculation depends on the addition of electrolytes through heat. Thus, varying with the pathological process, the diluted serum needs different quantities of bivalent electrolytes for the ho...