Results 181 to 190 of about 889,735 (223)

The characterization and flocculation efficiency of composite flocculant iron salts–polydimethyldiallylammonium chloride

Chemical Engineering Journal, 2008
Abstract In this study, new composite flocculants were prepared from iron salts and polydimethyldiallylammonium chloride (PDMDAAC). The Fe(III) species and zeta potential of the composite poly-ferric chloride (PFC) and PDMDAAC flocculant (PFC–PDMDAAC) and PFC were measured by a timed complexation spectroscopy method and the Malvern Zetasizer 3000 ...
Yan Wang, Baoyu Gao, Qinyan Yue, Jincheng Wei, Qian Li   +4 more
openaire   +1 more source

A STUDY OF THE FLOCCULATION OF PURE GOETHITE, QUARTZ, AND KAOLINITE AND THE SELECTIVE FLOCCULATION OF AGBAJA IRON ORE. PART III. SELECTIVE FLOCCULATION OF AGBAJA IRON ORE

Journal of Dispersion Science and Technology, 1996
A study of the selective flocculation of Agbaja iron ore with starch and nonionic polyacrylamide flocculants has been conducted to determine the effect of flocculant type. The results indicate that corn starch and cassava starch are effective flocculants for Agbaja iron ore.
C.O. Nebo, L.O. Asuquo, C.K. Nworu, M.C. Fuerstenau   +3 more
openaire   +1 more source

The Role of Charge Reversal of Iron Ore Tailing Sludge on the Flocculation Tendency of Sediments in Marine Environment

Applied Geochemistry, 2020
In the mining industry, tailings are conventionally stored in artificial ponds that are susceptible to ruptures, as occurred in Southeast Brazil in November 2015.
C Chassagne
exaly   +2 more sources

Iron Chloride Flocculation of Bacteriophages from Seawater

2017
Viruses influence ecosystem dynamics by modulating microbial host population dynamics, evolutionary trajectories and metabolic outputs. While they are ecologically important across diverse ecosystems, viruses are challenging to study due to minimal biomass often obtained when sampling natural communities.
Bonnie T, Poulos, Seth G, John, Matthew B, Sullivan   +2 more
openaire   +2 more sources

Removal of lead, zinc and iron by coagulation–flocculation

Journal of the Taiwan Institute of Chemical Engineers, 2011
Abstract Aluminium sulfate (alum), polyaluminium chloride (PACl) and magnesium chloride (MgCl 2 ) have been used as coagulants with Koaret PA 3230 as the polyelectrolyte to determine the effectiveness of coagulation method for the removal of heavy metals (Pb, Zn and Fe). The maximum removal of Pb(II) was observed in different distinctive pH ranges: 6.
Fong Moi Pang, Pradeep Kumar, Tjoon Tow Teng, A.K. Mohd Omar, Kailas L. Wasewar   +4 more
openaire   +1 more source

Optimisation of selective flocculation of ultrafine iron ore

International Journal of Mineral Processing, 1994
Abstract A laboratory scale selective flocculation process capable of recovering iron oxide from a sample of ultrafine (less than 10 μm) iron ore tailings containing kaolinite as the main gangue mineral has been developed. Experiments were carried out (i) to select the most appropriate flocculant from a large range of commercially available starches ...
P.K. Weissenborn, L.J. Warren, J.G. Dunn
openaire   +1 more source

Rheology and Structure of Flocculated Iron Oxide Suspensions

Journal of Colloid and Interface Science, 1996
This paper focuses on the relation between structure and rheology of flocculated suspensions. Rheological measurements were taken both in shear and nearly extensional flows. The structures of magnetic iron oxide suspensions were visualized using cryogenic scanning electron microscopy (Cryo-SEM) and video-enhanced light microscopy (VELM) under shear ...
Reinaldo C. Navarrete, L.E. Scriven, Christopher W. Macosko   +2 more
openaire   +1 more source

Cationic starches as flocculants of iron ore tailing slime

Minerals Engineering, 2020
Abstract This study aimed to evaluate the use of cross-linked cationic starch and pregelatinized cationic starch as flocculants in the sedimentation of iron ore tailing slime seeking a less toxic and less expensive alternative when compared with the use of polyacrylamide. The characterization of a sample from the slimes thickener’s feed indicated the
Aline da Mata Chiacchio Leite, Érica Linhares Reis   +1 more
openaire   +1 more source

Effect of montmorillonite on the selective flocculation of iron ores

Mining, Metallurgy & Exploration, 1986
Clay minerals adversely affect the selective flocculation of iron ores. The effect of montmorillonite on a hematite-quartz mixture was studied. Montmorillonite, particularly in the presence of Ca++, caused indiscriminate dispersion of the pulp. Three possible mechanisms were postulated, namely, card-house structure formation, adsorption of dissolved ...
A. I. Arol, I. Iwasaki
openaire   +1 more source

Application of iron flocculation to concentrate white spot syndrome virus in seawater

Journal of Virological Methods, 2022
The iron flocculation method, which comprises the Fe-virus flocculate formation-filtration-resuspension steps, is extensively used to concentrate and precipitate viruses distributed in water. To apply this method to concentrate white spot syndrome virus (WSSV) in seawater, viral genomic and infective recovery yields were compared between polyethylene ...
Min Jae, Kim, Eun Jin, Baek, Kwang Ii, Kim   +2 more
openaire   +2 more sources