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Electroosmotic dewatering of clays. I. Influence of Voltage

Electroosmotic dewatering of sedimented suspensions of sodium kaolinite clay, both partly and fully drained, was studied using inert electrodes at voltages from 1 V to 50 V. Dewatering at each ...

Soil Moisture Control Using Intelligent Single-Well ...

Each soil dewatering well is a separate unit that uses a controller and a casing equipped with an electro-osmotic pulse (EOP) array that has been designed to act independently on the soil moisture volume adjacent to the well.

Regrowth of bacterial pathogen indicators after advanced ...

Applying an electrical field for 10 min to mechanically dewatered biosolids increased dryness to 35 to 45% and reduced Escherichia coli levels to/close to detection limits. Possible reasons for the regrowth of bacterial pathogens impacted by electro-osmotic dewatering are biosolids dryness, low pH and the generation of bacterial oxidants on …

WO1996011051A3 - Dewatering process - Google Patents

A dewatering process in which a product comprising water and other materials is simultaneously subjected to compressive mechanical forces and electro-osmosis using a belt (12) comprising, at least in part, electrically conductive material.

Electroosmotic dewatering of cellulose nanocrystals

Electroosmotic dewatering Solid–liquid separation Energy demand Introduction Production of cellulose nanocrystals and nanofibril-lated cellulose is gathering significant interest amongst researchers as these materials combine ... (Lockhart 1983; Mahmoud et al. 2010): 2H 2O ! O

Previous winners of the Gold Medal | The Filtration Society

Previous winners of the Gold Medal. ... Filtration, cake washing and pressurised electroosmotic dewatering of a highly conductive silica suspension . 1997 – E.S. Tarleton and D.L. Hancock – Imaging of filter cakes through electrical impedance tomography . ... Some aspects of the mechanical dewatering of sewage sludges .

Laboratory and Field Study of Electroosmosis Dewatering ...

The objective of the study is to investigate the feasibly of utilizing electroosmotic dewatering to control the water content of subgrade soils and to determine the specific designs. First, laboratory-scale experiments were conducted to evaluate the effects of electroosmotic dewatering in controlling the water content of soils. ... N. C. (1983 ...

Electro-osmosis - Wikipedia

Electroosmotic flow (or electro-osmotic flow, often abbreviated EOF; synonymous with electroosmosis or electroendosmosis) is the motion of liquid induced by an applied potential across a porous material, capillary tube, membrane, microchannel, or any other fluid conduit.

Dewatering and Drying in Mineral | Clothes Dryer | Coal

DEWATERING AND DRYING IN MINERAL PROCESSING INDUSTRY 835 TABLE 1 Current dewatering technologies for minerals Dewatering Technology Characteristics of the dewatering methods Gravity Sedimentation Employ principles of gravity settling and applied in mineral concentrates and thickness tailings.

The use of electro-osmotic dewatering procedures and …

The use of electro-osmotic dewatering procedures and soil chemical treatment in frost heave prevention

Electroosmotic Dewatering of Tomato Paste …

Electroosmotic dewatering has several advantages compared wih mechanical dewatering and it is particularly effective for very fine particle sludge, gelatinous material, and biological sludge, which are difficult to dewater by mechanical methods.

Dewatering of mine tailings using electrokinetic ...

Electroosmotic dewatering provides a potentially attractive alternative technique for in situ dewatering. The technique, which involves the application of a potential difference between electrodes and causes the flow of water to the negatively charged cathode, has seen some limited use in civil engineering applications.

Electroosmotic dewatering of cellulose nanocrystals ...

Electroosmotic dewatering is an assisted filtration technique that can be used to increase the solid content of suspensions of materials with charged surfaces (Iwata et al. 2013; Mahmoud et al. 2010). ... Lockhart NC (1983) Electroosmotic dewatering of clays, III. Influence of clay type, exchangeable cations, and electrode materials.

Forthcoming papers - [PDF Document]

Colfoids and Sur/oces. 6 (1983) 99 Eketier Sdentific Publishing Company, Amsterdam -- P&ted in The Nethrrlands 99 Forthcoming papers Viscosity, packing density and optical properties of pigment PIends, by B. Alince and P. Lepoutre Sorption of alkali cations at the ticrunium oxide/uqweous electrolyte inter- face by S.K. Milonjie et al. Effect of the …

Electrokinetic Geosynthetics - from research to ...

Cassagrande, 1983 Combing electrokinetic functions with geosynthetic functions creates active geosynthetics + water electrokinetics+ filtration + drainage (EKDrain) EK causes water to flow to the drain Drain provides filtration and drainage, ... Electroosmotic dewatering – pore pressure reduction Consolidation 9 (9) 9 X (9) 9 9 9 Cementation ...

Electroosmosisi Dewatering | Filtration | Chemical …

The second part of this thesis presents an integrating framework for electroosmotic dewatering under constant voltage and constant current, founded on the mathematics of simple electricalc ircuits and demonstratedb y laboratorye xperimentation. The derived equations and experimental results showed that electroosmotic flow rate decreasesw …

Browse subject: Soil stabilization | The Online Books Page

Electroosmotic dewatering; Used for: Stabilization of soils; Filed under: ... Waterways Experiment Station, 1983), by Malcolm P. Keown and U.S. Army Engineer Waterways Experiment Station (page images at HathiTrust) A summary report on soil stabilization by the use of chemical admixtures / (Indianapolis : Civil Aeronautics Administration, ...

Performance evaluation of electrocoagulation and ...

The electrodewatering system, by incorporating an electric field as an additional driving force to the conventional pressure dewatering, has been evaluated as a function of an electrode material, applied voltage and filtration time.

Application of Electroosmosis for Sludge Dewatering—A ...

A review of the theoretical analysis of electroosmotic dewatering is presented. The equations representing electroosmotic flow through porous media are initially discussed. Consolidation theory, which describes the progress of dewatering, is then described. ... Colloids and Surfaces 1983, 6, 239 – 251.

Pressure electroosmotic dewatering with continuous removal ...

NOMENCLATURE D dielectric constant (F/m) E electric field intensity (V/m) I current intensity (A) k particle shape factor PL liquid pressure in cake pores (Pa) q superficial liquid velocity (m/s) qE liquid velocity due to electroosmotic dewatering (m/s) qP liquid velocity due to mechanical dewatering (m/s) t time (s) V overall filtrate volume ...

Pressure electroosmotic dewatering with continuous …

Loughborough University Institutional Repository Pressure electroosmotic dewatering with continuous removal of electrolysis products This item was submitted …

The results indicate the dependency of electro-osmotic dewatering upon ions in the soil. It is also found that electrode materials barely occupy any impact on the energy utilization ratio, which is closely related to properties of the soil.

Civil, Construction and Environmental Engineering …

Civil, Construction and Environmental Engineering Theses and Dissertations . Follow ... PED: pressurized electroosmotic dewatering, Leon William Heath. PDF. ... Theses/Dissertations from 1983 PDF. Reinforced composite masonry shear walls, Mahmoud Hussien Ahmed. PDF.

Impact of System Chemistry on Electroosmosis in ...

Classical analysis is based on assumptions of a uniform and constant electroosmotic permeability coefficient, for instance. ... Lockhart, N. C. (1983). "Electroosmotic dewatering of clays. II. Influence of salt, acid, and flocculants." Colloids and Surfaces, 6, 239–251.colColloids Surf. Crossref Google Scholar.

Chemical Engineering at the University of Florida

Electrophoresis and electroosmotic methods of dewatering phosphate clays have been explored since 1940s. [iv] - [vii] Although the basic technology was considered to have promise it was not considered commercially feasible.

Experimental study on function mechanism of …

Cite this article: TAO Yan-li,ZHOU Jian,GONG Xiao-nan. Experimental study on function mechanism of electrode materials upon electro-osmotic process[J].

Canadian Geotechnical Journal - NRC Research Press

Electrokinetic geocomposites (eGCPs) installed into the FFT disposal area may improve in situ dewatering, as eGCPs can drain water expulsed during FFT consolidation as well as impose a voltage across FFT to displace water by electro-osmosis. ... Canadian Geotechnical Journal 46 (8): 875-888 Link, ISI, ... 1983. Electroosmotic dewatering …

Electroosmotic dewatering of clays. II ... - ScienceDirect

Electroosmotic dewatering of sodium kaolinite, a kaolinitic clay slime from sandwashing, and a coal froth-flotation tailing, was studied at various concentrations of salt, acid, and polymeric flocculants.