- "Electrocoagulation for removal of silica nano-particles from chemical–mechanical-planarization wastewater" The optimal conditions are current density 144.06 A/m2, retention time 25.95 s, and pH value 7.29, resulting in silica concentrations in the treated effluent below 5 mg/L. The consumption costs of energy, chemicals and electrodes for RW treatment ranged from US$ 0.52 to 0.74 m-3, and was approximately US$0.53 m-3 for CTBW. The ratio mgl-1 Al3+ dosed /mgl-1 silica removed ranged from 1.09 ± 0.06 to 1.33 ± 0.05 when treating RW and 0.85 ± 0.1 when treating CTBW. Clase and Periódica; Indexing manual; SciELO; Tutorials; Diffusion Materials; Bibliometrics. Eagle Cement, Philippines. Eagle implemented the EEC to remove >90% of the Silica found in the makeup water. One of the important parameters to monitor the performance of the system is the Voltage as a function of time; when this variable increases means that something has changed, the most common cause is electrode passivation due to a solids film deposited over the electrodes, other causes are false contacts or exhausted electrodes. The surface of Al electrode after alternating pulse current 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. GWT specialized electrocoagulation water treatment systems have several advantages versus conventional chemical coagulation for drinking water applications. Toggle navigation BIBLAT. Blue dyed waste water after EEC treatment clear re-usable water. A. EEC is a modular fully automatic Green and Clean side stream installed solution for many applications. Introduction In the past 10 years, electrochemical processes have received renewed interest as an alternative treatment method for industrial wastewater containing dispersed charged particles without chemical additions. N2 - This study investigated the performance of electrocoagulation using iron and aluminum electrodes for removing silica, calcium and magnesium from cooling tower blowdown and reverse osmosis reject waters. For our purposes, a current density of j=38 A/m2 was selected in scaling up an electrocoagulation unit as at this current density a good silica removal is reached, the electrodes could be totally consumed without an important increase in voltage and they kept free of deposits. In those cases, electrocoagulation provides an excellent pre-treatment technology to remove contaminants prior to reverse osmosis to prevent blinding of the membrane. 3, May-June, 2014, pp. The simulated water contains (50 mg/l silica, 508 mg/l calcium, and 292 mg/l magnesium). GWT electrocoagulation solutions have been instrumental in the treatment of the following contaminants: Oxidation of Organics such as Arsenic. production and in removing the formed flocs. the results indicate that passivation of Al is not observed. Silica Ion-Exchange systems are normally composed of mineral tanks and since we use strong base chemical to regenerate the resin in this system so we need to have corrosion resistant tanks such as (FRP tanks and Rubber-lined Steel tanks). The magnified portion (b) schematically depicts the electrocoagulation mechanisms for the removal of colloidal particles, with the image (c) of the anode surface covered with gelatinous film. By removing the color, suspended solids and silica, the water is of sufficient quality for reus Metal Plating: Metal platers use electrocoagulation to remove metals from the plating rinse water tank, enabling them to reuse the remediated water as process water. 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. Contact Us 281-339-5400 3, #181, P.O. 3. In this study it was assumed that if more iron is removed after sedimentation the amount of eliminated arsenic in water will be higher The results showed that there is a good correlation between the elimination of both pollutants. Ferric chloride was optimized for silica colloid coagulation in IC wastewater via charge neutralization resulting in 97.2% turbidity removal. In addition, temperature and settle time showed effects on silica removal. Under the tested conditions it was possible to remove up to 66% of silica from water containing around 50 mg L(-1). Metal platers use electrocoagulation to remove metals from the plating rinse water tank, enabling them to reuse the remediated water as process water. The simulated water contains (50 mg/l silica, 508 mg/l calcium, and 292 mg/l magnesium). 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