Novel flocculants have been synthesized on the basis of glycogen. The efficiency of cationic glycogen can be explained in terms of Singh’s qualitative easy approachability model (EAM). The jar test was used previously to evaluate flocculation efficacy, but we have recently shown that a plot of interface height vs. settling times provides a better measure. In accord with the EAM, a one-to-one co...

Most analyses of Brownian flocculation apply to conditions where London-van der Waals attractive forces cause particles to be strongly bound in a deep interparticle potential well. In this paper, results are reported that show the interaction between primary- and secondary-minimum flocculation when the interparticle potential curve reflects both attractive and electrostatic repulsive forces. Th...

Flocculation studies between dual polymers on pulp and paper mill wastewater are reported in this paper. The effects of different molecular weights of polyDADMAC and different dosages of Polyacrylamide (PAM) were studied. The molecular weights of polyDADMAC used were 8.8 × 10, 10.5 × 10 and 15.7 × 10 g/mol. The flocculation performance was analyzed in jar tests with PolyDADMAC and Polyacrylamid...

A high flocculation performance composite flocculant was prepared with sodium alginate, polyaluminium ferric chloride and cationic polyacrylamide. And the composite flocculant was used in papermaking wastewater treatment. Results indicated that it achieve the best flocculation performance when the raw material mass ratio was 2:1:1, the dosage of the composite flocculant was 20 mg/L, and the rem...

groups, i.e., the group with less than 30 per cent of interstitial tissue and the group with 30 per cent or more of interstitial tissue. Edema, liver enlargement, abnormalities in thymol flocculation test, in cephalin cholesterol flocculation test, and in serum r-globulin concentration, and deformity of the hepatic veins in hepatic venograms were all significantly more frequently observed in th...

the present investigation provides a thorough study of eliminating soluble and colloidal elements of copper, iron, magnesium and zinc during estuarine mixing of gorganrood river water with caspian sea water in iran. the processes of flocculation were carried out in 10 aquariums in order to furnish the salinity in an interval of 0.3 - 4.4 ppt. the obtained result is indicative of non- conservati...

Microalgae have increasingly gained research interest as a source of lipids for biodiesel production. The wet way processing of harvested microalgae was suggested and evaluated with respect to the possible environmental impacts and production costs. This study is focused on the three key steps of the suggested process: flocculation, water recycling, and extraction of lipids. Microalgae strains ...

‘THE LENGTHY INCUBATION PERIOD and the subjective interpretation of degree of flocculation ai’e undesirable characteristics of the Hanger cephalin cholesterol flocculatiomi test (1). Several workers (2-4) have reported modifications either to shorten test time or to determine extent of flocculation mnstrumemitally. Inadequate sensitivity has been noted in some of these technics as well as inter...

The proposed procedure to produce low polluting effluent consists of a combination of coagulation-flocculation and membrane separation process. The main role of the coagulation-flocculation process is the simultaneous enhancement of removal efficiency and increase the permeate flux by minimizing the membrane fouling. Membrane fouling has a significant impact on the cost, design, and operation o...