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Electroosmotic Dewatering 1983

Electroosmotic dewatering of clays, III. Influence of clay ...

01/04/1983  INTRODUCTION The dewatering of sediments or slimes is strongly dependent on the nature of the material involved, in particular its average pore size and its pore size 0166-6622183/=03.00 (v 1983 Elsevier Science Publishers B.V. 254 distribution.

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(PDF) Laboratory Experiments on Electroosmotic Dewatering ...

Apr 1983; Colloid Surface; N.C. Lockhart; Electroosmotic dewatering of sedimented suspensions of sodium kaolinite clay, both partly and fully drained, was studied using inert electrodes at ...

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Electroosmotic dewatering of clays. II. Influence of salt ...

01/04/1983  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. Salt or acid up to about 10 −2 M usually allowed dewatering to proceed at lower voltages or better dewatering at the same voltages, compared with suspensions in pure water, so that the ...

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Electroosmotic dewatering of clays, III. Influence of clay ...

Abstract Electroosmotic dewatering of sedimented and drained samples of Na, Ca, Al, H and Cu kaolinites and Na, Ca, Al and H montmorillonites commenced at 1 V for Na, H and Cu clays, at 5 1 2 —10 V for Ca clays, and at 25 V for Al clays which did not dewater appreciably until > 160 V was applied. This reflected the relative binding strengths for cations of increasing valency at the surfaces ...

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Electroosmotic dewatering of clays, III. Influence of clay ...

Electroosmotic dewatering of sedimented and drained samples of Na, Ca, Al, H and Cu kaolinites and Na, Ca, Al and H montmorillonites commenced at 1 V for Na, H and Cu clays, at 5 1 2 —10 V for Ca clays, and at 25 V for Al clays which did not dewater appreciably until > 160 V was applied.

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Electroosmotic dewatering of clays. I. Influence of ...

01/04/1983  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 voltage slowed down when 45–50 wt% solids was reached, eventually stopped.

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Electroosmotic Dewatering

In book: Electric Field Applications: In Chromatography, Industrial and Chemical Processes (pp.133 - 151)

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Pressure electroosmotic dewatering with continuous removal ...

most research has concentrated on pressurised electroosmotic dewatering (PED), that is, the application of a DC electric field during the expression of formed cakes or porous media (Sprute and Kelsh, 1980; Lockhart, 1983; Iwata et al., 1991; Barton et al., 1999; Weber and Stahl, 2002b). Macroscopic modelling efforts have been attempted to analyse PED behaviour in saturated water

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ELECTROOSMOT1C DEWATERING UNDER A. C. ELECTRIC FIELD

Electroosmotic dewatering under the condition of A.C. was experimentally investigated mainly in the region of low frequency below Hz for the electrode polarity reversals. In the dewatering process, the A.C. electric field could reduce the hindrance caused by the D.C, and final dewalered amount was increased more than that under the D.C. electric field. For constant applied voltage, the ...

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(PDF) Application of Electroosmosis for Sludge Dewatering ...

electroosmotic dewatering in the region of very low fre-quency such as 0.01 and 0.001 Hz for the electrode polarity. reversals of AC with constant voltage, using both rectangu-lar and sine waves ...

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Pressure electroosmotic dewatering with continuous removal ...

most research has concentrated on pressurised electroosmotic dewatering (PED), that is, the application of a DC electric field during the expression of formed cakes or porous media (Sprute and Kelsh, 1980; Lockhart, 1983; Iwata et al., 1991; Barton et al., 1999; Weber and Stahl, 2002b). Macroscopic modelling efforts have been attempted to analyse PED behaviour in saturated water

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Electroosmotic dewatering of clays, III. Influence of clay ...

Abstract Electroosmotic dewatering of sedimented and drained samples of Na, Ca, Al, H and Cu kaolinites and Na, Ca, Al and H montmorillonites commenced at 1 V for Na, H and Cu clays, at 5 1 2 —10 V for Ca clays, and at 25 V for Al clays which did not dewater appreciably until > 160 V was applied. This reflected the relative binding strengths for cations of increasing valency at the surfaces ...

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Electroosmotic dewatering of dredged sediments: Bench ...

Others (Lockhart, 1983;Mohamedelhassan and Shang, 2002) indicate that there is an optimum value of the salt concentration that results into an acceleration of the dewatering rate (0.59 g/l for ...

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(PDF) Pressure electroosmotic dewatering with continuous ...

However, most research has concentrated on pressurised electroosmotic dewatering (PED), that is, the application of a DC electric field during the expression of formed cakes or porous media (Sprute and Kelsh, 1980; Lockhart, 1983; Iwata et al., 1991; Barton et al., 1999; Weber and Stahl, 2002b). Macroscopic modelling efforts have been attempted to analyse PED behaviour in saturated water

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Mechanical and Physical Effects of Electroosmotic ...

03/07/2019  Lockhart NC (1983) Electroosmotic dewatering of clays, II. Influence of salt, acid and flocculants. Colloids Surf 6:253–269 CrossRef Google Scholar. Mitchell JK (1993) Fundamentals of soil behavior, 2nd edn. Wiley, New York Google Scholar. Mohamedelhassan E, Shang JQ (2002) Feasibility assessment of electro-osmotic consolidation on marine sediment. Ground Improv 6(4):145–152

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CN104973747A - Electro-osmosis sludge dewatering system ...

The invention aims to provide an electro-osmosis sludge dewatering system. According to the technical scheme, the electro-osmosis sludge dewatering system comprises a feed system, a sludge dewatering system and a discharge system. Sludge with 80% water content which is produced from a sludge treatment plant undergoes caching, and the whole set of feed system with sludge caching equipment

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JP2716600B2 - Electro-osmotic dewatering of sludge ...

Electro-osmotic dewatering of sludge Info Publication number JP2716600B2. JP2716600B2 JP3154539A JP15453991A JP2716600B2 JP 2716600 B2 JP2716600 B2 JP 2716600B2 JP 3154539 A JP3154539 A JP 3154539A JP 15453991 A JP15453991 A JP 15453991A JP 2716600 B2 JP2716600 B2 JP 2716600B2 Authority JP Japan Prior art keywords sludge dehydration electroosmotic filter

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(PDF) Food processing waste dewatering by electro-osmosis

The results indicated that combining an electric field with mechanical dewatering can increase the percent solids from 30 to 49% for brewer's spent grain (BSG), from 23 to 53% for apple pomace ...

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Effects of Electro Osmotic Consolidation in South West of ...

[13] Eggestad A., and Foyn T. Electro osmotic Improvement of a Soft Sensitive Clay, Proceeding of the 8th European Conference on Soil Mechanics and Foundation Eng. Vol. 2, 1983, pp.597-603. [14] Lockhart, N.C., Electroosmotic Dewatering of Clays.

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Electrokinetic - EKG Geochemical Soil Improvement

Casagrande (1983) similarly demonstrated changes in grain size of quartz as a result as a result of electroosmotic treatment. And Wade (1975) noted a significant shortening of the fine grained tail of the particle size distribution curve in silt after electroosmotic treatment.

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(PDF) Pressure electroosmotic dewatering with continuous ...

However, most research has concentrated on pressurised electroosmotic dewatering (PED), that is, the application of a DC electric field during the expression of formed cakes or porous media (Sprute and Kelsh, 1980; Lockhart, 1983; Iwata et al., 1991; Barton et al., 1999; Weber and Stahl, 2002b). Macroscopic modelling efforts have been attempted to analyse PED behaviour

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Laboratory device to characterize electrokinetic ...

04/04/2015  1983. Electroosmotic dewatering of clays, III. Influence of clay type, exchangeable cations, and electrode materials. Colloids and Surfaces 6: 253-269 Crossref, ...

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SURFACTANT-ENHANCED ELECTROOSMOTIC DEWATERING OF

Abstract The rate and extent of electroosmotic dewatering of mineral ultrafines are dependent on the surface charge density which is quantitatively measured by the zeta potential. This research tailors the surface electrical properties of a naturally uncharged ochre (iron oxide) mineral slurry by altering the concentration of potential determining hydroxide ions to facilitate electroosmotic ...

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Electroosmotic dewatering of cellulose nanocrystals

Electroosmotic dewatering equipment The experimental equipment used for the electroos-motic dewatering experiments has been described in a previous study on local filtration properties during electro-assistedfiltration(Wetterlingetal.2017b),see Fig. 1. The dewatering cell is cylindrical, with an Cellulose (2018) 25:2321–2329 2323 123

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Effect of Electro-Osmotic Dewatering on the Quality of ...

Abstract As a new dewatering technology with high efficiency and energy saving, electro-osmotic dewatering can be applied to food processing. The objective of this work was to study the effect of combined field dewatering (CFD) involving electro-osmosis and mechanical pressure on the quality of tofu sheet. Combined field dewatering was performed on the dewatering

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CN1076629C - 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) having a plurality of connected spiral yarns and, at least in part, electrically conductive material thereon.

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CN103253844A - Foldable screw type sludge dewatering ...

The invention discloses a foldable screw type sludge dewatering machine with an electroosmotic dewatering function, relates to the technical field of sludge dewatering equipment in a water treatment industry, and aims at the problems that the dewatering of existing mechanical squeezing type dewatering equipment has the upper limit and cannot reach

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Effects of Electro Osmotic Consolidation in South West of ...

[13] Eggestad A., and Foyn T. Electro osmotic Improvement of a Soft Sensitive Clay, Proceeding of the 8th European Conference on Soil Mechanics and Foundation Eng. Vol. 2, 1983, pp.597-603. [14] Lockhart, N.C., Electroosmotic Dewatering of Clays.

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JPS6068017A - Electroosmostic dehydrator - Google Patents

PURPOSE: To reduce electric power consumption by performing predehydration simultaneously with electroosmotic dehydration by constructing an external cylinder constituted of a front half part with an insulating material and a hind half part with an electroconductive material and arranging conveying screw blades serving also as electrode to the inside of the external cylinder.

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(PDF) Electroosmotic flows and electromigrations during ...

Electroosmotic flows and electromigrations during electrokonetic processing of tropical residual soil. 2006. Mohd Taha. Kamarudin Ahmad. Mohd Taha. Kamarudin Ahmad. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER. Electroosmotic flows and electromigrations during electrokonetic

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Advances in Mechanical Dewatering of Wastewater Sludge Treatment

11/09/2012  Lockhart NC (1983) Electroosmotic dewatering of clays. II. Influence of salt, acid, and flocculants. Colloids Surf 6:239–251 Google Scholar. 205. Lockhart NC (1983) Electro-osmotic dewatering of fine tailings from mineral processing. Int J Miner Process 10:131–140 Google Scholar. 206. Rabie HR, Mujumdar AS, Weber ME (1994) Interrupted electro osmotic dewatering

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CN104973747A - Electro-osmosis sludge dewatering system -

The invention aims to provide an electro-osmosis sludge dewatering system. According to the technical scheme, the electro-osmosis sludge dewatering system comprises a feed system, a

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JP2716600B2 - Electro-osmotic dewatering of sludge - Google

Electro-osmotic dewatering of sludge Info Publication number JP2716600B2. JP2716600B2 JP3154539A JP15453991A JP2716600B2 JP 2716600 B2 JP2716600 B2 JP 2716600B2 JP 3154539 A JP3154539 A JP 3154539A JP 15453991 A JP15453991 A JP 15453991A JP 2716600 B2 JP2716600 B2 JP 2716600B2 Authority JP Japan Prior art keywords sludge dehydration electroosmotic

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(PDF) Pressure electroosmotic dewatering with continuous removal of electrolysis products

However, most research has concentrated on pressurised electroosmotic dewatering (PED), that is, the application of a DC electric field during the expression of formed cakes or porous media (Sprute and Kelsh, 1980; Lockhart, 1983; Iwata et al., 1991; Barton et al., 1999; Weber and Stahl, 2002b). Macroscopic modelling efforts have been attempted to analyse PED behaviour

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US5891342A - 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) having a plurality of connected spiral yarns and, at least in part, electrically conductive material thereon.

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Effect of Electro-Osmotic Dewatering on the Quality of Tofu

Abstract As a new dewatering technology with high efficiency and energy saving, electro-osmotic dewatering can be applied to food processing. The objective of this work was to study the effect of combined field dewatering (CFD) involving electro-osmosis and mechanical pressure on the quality of tofu sheet. Combined field dewatering was performed on the dewatering

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WO1996011051A3 - Dewatering process - Google Patents

dewatering process osmosis electro belt materials Prior art date 1994-10-06 Application number PCT/GB1995/002255 Other languages French (fr) Other versions WO1996011051A2 (en Inventor Tije Alfons Gerardus Maria Ten Original Assignee Scapa Group Plc Tije Alfons Gerardus Maria Ten Priority date (The priority date is an assumption and is not a legal conclusion. Google has

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Experimental Study on Electro-Osmosis Consolidation with Solar Power

27/05/2018  Electro-osmosis is an effective method for accelerating the consolidation of soft soils while it has not been widely used in practice because of its

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Effects of Electro Osmotic Consolidation in South West of

[13] Eggestad A., and Foyn T. Electro osmotic Improvement of a Soft Sensitive Clay, Proceeding of the 8th European Conference on Soil Mechanics and Foundation Eng. Vol. 2, 1983, pp.597-603. [14] Lockhart, N.C., Electroosmotic Dewatering of Clays.

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CN1159768A - Dewatering process - Google Patents

dewatering conducting fabric basic Prior art date 1994-10-06 Application number CN95195494A Other languages Chinese (zh) Other versions CN1076629C (en Inventor AGM添蒂赫 Original Assignee 斯卡帕集团有限公司 Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the

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