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electroosmotic dewatering

Electroosmotic Dewatering - an overview | ScienceDirect Topics

An additional benefit of electro-osmotic dewatering is that the soil properties may be improved which will make excavation easier and more stable.

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Electroosmotic dewatering of cellulose nanocrystals ...

高达12%返现 · Mar 06, 2018 · Electroosmotic dewatering involves an electric field applied across a suspension of charged particles. Particles with a negative surface charge experience an electrophoretic force in the direction of the anode.

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Electroosmotic dewatering of dredged sediments: Bench ...

Jan 01, 2006 · Electroosmotic dewatering has a great potential to be a simple and efficient way to accelerate consolidation of the sediment. Basically, electroosmotic technology involves an application of a low electric potential across the sediment layers that need to be dewatered.

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PED: pressurized electroosmotic dewatering

electroosmotic dewatering (FED) of ultra-fine coal suspensions. The tests show that FED increases the dewatering rate and decreases the final moisture content as compared to conventional processes. Other slurries, slimes and sludges have also been dewatered using the FED process and the results have proven that the FED process is effective with ...

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Electro-Osmotic Dewatering (EOD) of Bio-Materials ...

高达12%返现 · Jul 31, 2008 · In practical application of electro-osmotic dewatering (EOD), it is very important to increase the dewatering rate, and to decrease the final water content and the electric power consumption for water removal.

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Electroosmotic dewatering of dredged sediments: Bench ...

Jan 01, 2006 · Electroosmotic dewatering essentially involves applying a small electric potential across the sediment layer, thereby inducing rapid flow as a result of physico-chemical and electrochemical processes. A series of bench-scale electrokinetic experiments were conducted on actual dredged sediment samples from the Indiana Harbor to investigate ...

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Electro-Osmotic Dewatering (EOD) of Bio-Materials ...

Jul 31, 2008 · Abstract. In practical application of electro-osmotic dewatering (EOD), it is very important to increase the dewatering rate, and to decrease the final water content and the electric power consumption for water removal. In a batch apparatus for dewatering operation of colloidal suspensions or sludges, electric power applications, such as ...

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PED: pressurized electroosmotic dewatering

electroosmotic dewatering (FED) of ultra-fine coal suspensions. The tests show that FED increases the dewatering rate and decreases the final moisture content as compared to conventional processes. Other slurries, slimes and sludges have also been dewatered using the FED process and the results have proven that the FED process is effective with ...

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CN105016601A - Electro-osmotic dewatering technology for ...

electroosmotic dewatering sludge dewatering dehydration Prior art date 2015-07-03 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Pending Application number CN201510382946.3A Other languages Chinese (zh ...

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"PED: pressurized electroosmotic dewatering " by Leon ...

Mechanical solid/liquid separation or dewatering of fine-grained suspensions is difficult to accomplish with any degree of success, cost effectiveness and/or practicality. The use of electroosmosis, the electrokinetic transport of water, which is theoretically independ- ent of pore size, on the other hand can be quite slow and consume a great deal of electrical energy. However, in combining ...

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CN102060427B - Electroosmosis dewatering method and device ...

The invention relates to an electroosmosis dewatering method and a device of a water-containing material. In the invention, a water-containing material is dewatered by utilizing a direct-current electric field; an electroosmosis dewatering unit comprises a cathode made of wire mesh capable moving, an anode capable of lifting on the cathode panel along the vertical direction and a subsidiary ...

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Electro-osmotic dewatering of high moisture flax stems ...

May 01, 2015 · Electro-osmotic dewatering was investigated as a pre-drying process for high-moisture flax stems using a bench electro-osmotic roller press. The various parameters affecting electroosmotic dewatering were cylinder pressure (1000 kPa–3000 kPa), applied voltage (12 V–36 V) and pre-soaking time of the flax stem (12 h–36 h).

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Mathematical model for electroosmotic dewatering of ...

Feb 05, 2011 · Pressure electroosmotic dewatering with continuous removal of electrolysis products[J]. Chemical Engineering Science, 2006, 61(14): 4732–4740. Article Google Scholar Download references. Author information. Affiliations. School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China ...

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Electro-osmosis treatment techniques and their effect on ...

Apr 01, 2019 · Electroosmotic dewatering under A. C. electric field with periodic reversals of electrode polarity Drying Technol. , 17 ( 3 ) ( 1999 ) , pp. 539 - 554 CrossRef View Record in

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Electrokinetic Dewatering of Sewage Sludge with Fixed and ...

Jan 01, 2016 · This paper presents a laboratory study on electrokinetic dewatering (EKD) of sewage sludge with fixed and moving electrodes. The experiments with fixed electrodes were conducted in two purposely designed Perspex cylinders to investigate the mechanism of attenuation in electroosmotic flow and dewatering efficiency.

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of Mineral Ultrafines Surfactant-Enhanced Electroosmotic ...

The rate and extent of electroosmotic dewatering of mineral ultrafines are de- pendent on the surface charge density which is quantitatively measured by the zeta potential. This research tailors the surface electrical properties of a naturally un- charged ochre (iron oxide) mineral slurry by altering the concentration of potential ...

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Electroosmosis presentation - SlideShare

Dec 13, 2016 · Electroosmosis as rising damp treatment The electroosmotic method is known for 200 years. It is used in several areas (such as medicine) for many years, but in the last 20 years it has been applied in the dehumidification of masonries.

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The effect of the addition of fly ash to municipal ...

Jul 09, 2011 · The dewatering efficiency of electroosmotic dewatering method on municipal digested sludge mixed 20 wt% of fly ash by wet base is improved by about 10% against conventional mechanical dewatering with adding fly ash, about 12% against electroosmotic dewatering without adding the fly ash, and about 40% with conventional mechanical dewatering ...

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Evaluation of Suitable Material Properties of Sludge for ...

Electroosmotic dewatering was enhanced by periodically interrupting the power (the off-time) and simultaneously short circuiting the electrodes. Noting that continuous application of power ...

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Electroosmotic Dewatering | Products & Suppliers ...

Typically electroosmotic dewatering of clay-rich materials is of the order of 1 to 4 orders of magnitude faster than hydraulic dewatering, with a typical value of electro-osmotic permeability (ke) for a

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Electroosmotically enhanced dewatering/deliquoring of fine ...

Electroosmotic flow has advantages for dewatering because it is much less sensitive to pore size than hydraulic gradient flow for the 1 to 75 ..mu..m ultrafine size range. The first year of this project focused upon preparation of ultrafine coal samples, development of test equipment and test cells, identification of variables affecting ...

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"PED: pressurized electroosmotic dewatering " by Leon ...

Mechanical solid/liquid separation or dewatering of fine-grained suspensions is difficult to accomplish with any degree of success, cost effectiveness and/or practicality. The use of electroosmosis, the electrokinetic transport of water, which is theoretically independ- ent of pore size, on the other hand can be quite slow and consume a great deal of electrical energy. However, in combining ...

Read More
of Mineral Ultrafines Surfactant-Enhanced Electroosmotic ...

The rate and extent of electroosmotic dewatering of mineral ultrafines are de- pendent on the surface charge density which is quantitatively measured by the zeta potential. This research tailors the surface electrical properties of a naturally un- charged ochre (iron oxide) mineral slurry by altering the concentration of potential ...

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WO2010113846A1 - Method for dewatering sludge and method ...

In dewatering sludge, which is formed in a process of biologically treating various industrial effluents or the like, by using an electroosmotic dewatering device, the electroosmotic dewatering treatment can be efficiently carried out while minimizing the cost for chemicals and requiring no additional element, such as a dissolution tank or a heater, or no extra energy.

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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-

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ELECTROOSMOT1C DEWATERING UNDER A. C. ELECTRIC FIELD

ABSTRACT D.C. electric field has been usually used for electroosmotic dewatering. Under the condition of D.C., however, electrical contact resistance between the electrode and dewatering material is increased considerably with the process of dewalering. Such a circumstance hinders continuation of effective electroosmotic dewatering. To reduce the hindrance, application of A.C. electric field ...

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(PDF) Food processing waste dewatering by electro-osmosis

Electro-osmosis is a unique dewatering technique in which, moisture in food materials are removed by the application of low electric field (5-30 V). Different food materials namely, yogurt, orange ...

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Electrokinetic Dewatering of Sewage Sludge with Fixed and ...

Jan 01, 2016 · This paper presents a laboratory study on electrokinetic dewatering (EKD) of sewage sludge with fixed and moving electrodes. The experiments with fixed electrodes were conducted in two purposely designed Perspex cylinders to investigate the mechanism of attenuation in electroosmotic flow and dewatering efficiency.

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Electroosmosis - YouTube

Feb 23, 2016 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators ...

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Laboratory investigation of electro-osmosis effects in ...

ABSTRACT A set of unconventional electro-osmosis (EO) experiments using intermittent current was conducted on dredger fill samples from a land reclamation site at Liaoning Coast in China. This study focused on the quantitative evaluation of the use of EO to enhance the effect of surcharge preloading consolidation, thus improving the mechanical and physical properties of soil.

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Electro-Osmotic Dewatering (EOD) of Bio-Materials ...

The electroosmotic dewatering efficiency under the constant electric current is compared with that under the constant voltage, concerning dewatering rate, water content in dewatered sludge and ...

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Anomalous mobility of highly charged particles in pores ...

Jul 16, 2015 · 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 ...

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

(2003). Effect of Electro-Osmotic Dewatering on the Quality of Tofu Sheet. Drying Technology: Vol. 21, No. 1, pp. 129-145.

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