Silica, the second most abundant element on earth after oxygen, can be found in almost every water supply across the globe. Share on twitter. The major contaminant targeted is dissolved silica, which is the cause of the scaling problem in the steam generators in the oil-sands production process. Electrocoagulation can be use to remove most suspended materials and metal ions from solution, It, therefore, has possible uses in treating mining, electroplating, and other process wastewater, as well as contaminated groundwater and pre-treatment of drinking water. 41-50. An EC iron dose of 4.0 mM resulted in 76–89% silica removal for solutions with initial pH values between 4 and 8. Chemical coagulation was not as effective as EC, and was able to achieve a maximum removal of 64% with a 4.0 mM FeCl 3 dose. According to the World Health Organization (WHO), nearly 1.1 billion people do not have access to a clean drinking water source. Toggle navigation BIBLAT. - "Electrocoagulation for removal of silica nano-particles from chemical–mechanical-planarization wastewater" Fig. GWT electrocoagulation solutions have been instrumental in the treatment of the following contaminants: Oxidation of Organics such as Arsenic. The filtered water was used to develop a silica removal curve based off of 3, 9, 15, and 30 mg/L Al EC treatments. to the silica removal. Silica Ion-Exchange system can complement any water treatment system if there is a need to remove the silica from water specifically. Use of real CS water resulted in inhibition of the silica removal mechanism which was ascribed to the presence of organic materials and turbidity causing entities, not accounted for in simulated solutions. Share on facebook. These results provided useful information for heavy oil wastewater treatment to be reused in boilers. About Biblat. The removal of these two solutes as well as calcium and magnesium (i.e., the solutes that can also cause scaling) from synthetic and authentic produced waters by electrocoagulation (EC) was investigated in this study. Elgressy Engineering Services Ltd. T +972.3.772.1342 | +972.9.8623112 E info@elgressy.com. Finally, a silica removal efficiency of 90.2% in brackish water and 60.7% in seawater was reported in the electrocoagulation studies, and it was noted that the optimal removal efficiency occurred when the silica concentration was around 28 mg/L in the brackish water. to the silica removal. In those cases, electrocoagulation provides an excellent pre-treatment technology to remove contaminants prior to reverse osmosis to prevent blinding of the membrane. The ceramic membrane flux held stably at 100-130 GFD (170-220 LMH) without the need of high rates of crossflow, and with conventional flux maintenance using backwashes and chemically enhanced backwashes. The study on anions effect showed that Cl− could effectively prevent the voltage rise, but it could form disinfection by-products. Contaminated water often contain high amount of silica and calcium, which traditionally required the addition of expensive chemicals for removal thus increasing the operating cost. Electrocoagulation systems have been in existence for many years (Dietrich, patented, 1906) using a variety of anode and cathode geometries, including plates, balls, fluidized bed spheres, wire mesh, rods and tubes. Depending on need, a variety of effective removal processes exist Central composite design under response surface methodology was used to optimize the continuous process. Interested in learning how to reduce your high silica levels? This study investigates the results of electrocoagulation (EC) using aluminum (Al) electrodes as anode and stainless steel (grade 316) as a cathode for removing silica, calcium, and magnesium ions from simulated cooling tower blowdown waters. E-FLOC® Wastewater Solutions' Electrocoagulation is a non-chemical industrial wastewater treatment for removal of metals, suspended solids & more. EEC is a modular fully automatic Green and Clean side stream installed solution for many applications. Höganäs Cleanit ®-EC systems offer high-performance and cost-effective removal of single or multi-contaminant wastewater containing silica, metals, dyes, or challenging organics.Our advanced electrocoagulation process featuring Höganäs Cleanit iron-based electrodes delivers safe, simple, and reliable operation for the most challenging industrial wastewater. Two types of distinct mechanisms were observed, one involving particle destabilization by oppositely charged ferrous ions and the other involving coprecipitation or enmeshment of silica particles with the iron hydroxides. Energy Transfer in Aluminum Dissolution, Estimating Dosing Rates and Energy Consumption for Electrocoagulation Using Iron and Aluminum Electrodes, Removal of silica from heavy oil wastewater to be reused in a boiler by combining magnesium and zinc compounds with coagulation, Alternating pulse current in electrocoagulation for wastewater treatment to prevent the passivation of Al electrode, changes in humic substances caused by ozone oxidation, Electrogeneration of aluminium to remove silica in water, Current Density as a Master Variable in Designing Reactors, Effect of co-existing ions on electrode behavior in electrocoagulation process for silica removal. Many applications water applications current feed style, alternating pulse current electrocoagulation a! 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