Abstract A considerable amount of very fine particles can be found, e.g., stored in tailing ponds, and they include valuable or hazardous minerals that have the potential to recovered. Selective flocculation, i.e., formation larger aggregates from specific minerals, offers a promising approach improve recovery ultrafine particles. This study focuses on use new bio-based flocculation agent made ...

Flocculation achieved by raising the pH, termed alkaline flocculation is a sustainable way of inducing in marine microalgae. Flocs formed post-alkaline have potential to be harvested via dissolved air flotation (DAF) or sedimentation. While DAF results faster separation and biomass with higher solids content compared sedimentation, it has not been tested saline environments, particularly when c...

In an earlier paper in this Journal (Vogelsang, 1947), a new microflocculation test for syphilis described by Harris, Rosenberg, and Riedel (1946) was compared with the Wassermann reaction, the Kahn standard test, and the Meinicke clarification test in 5,556 sera. The test was found to be very useful in the diagnosis of syphilis, having a satisfactory sensitivity and a good specificity. Harris ...

the objective of this research was to develop a laboratory test procedure to predict full-scale primary clarifier performance using chemically enhanced primary treatment (cept). a method was developed that simulated actual primary clarifier performance, with chemical enhancements, based on simulating full-scale surface overflow rate (sor) and flocculation time in the laboratory. the method used...

The fact that the optimum proportion flocculation ratio is different when determined by the alpha (Dean and Webb) and beta (Ramon) procedures is pointed out. It is demonstrated that this difference is a consequence of the difference in the two methods, and that the two optima, though they may in certain cases lie near together, can never coincide. A new ratio (the epsilon ratio), intermediate b...

In a recent paper [Phys. Rev. E 61, 2831 (2000)], Borstnik, Stark, and Zumer have studied the stability of a colloidal dispersion of micron-sized spherical particles in the isotropic phase of a nematogenic material. Close to the nematic transition, the attraction due to a surface-induced paranematic order can yield flocculation. Their calculation of the nematic-mediated interaction was based on...

The flocculation of dissolved heavy metals is a process which has an important effect on decreasing the concentration of the colloidal elements during estuarine mixing of river water and sea or ocean water. During this important process, a large amount of colloidal elements change into particles in the form of flock and the dissolved loads decline. This study is performed to evaluate the mechani...

The term flocculation is often confused with coagulation, although the two refer to different processes. Coagulation is basically electrostatic in nature. It is brought about by a reduction of the repulsive potential of the electrical double layer. The term flocculation is derived from the Latin, “flocculus,” literally a small tuft of wool, or a loosely fibrous structure. Flocculation is brough...