Non-Conformity with Faraday Law by Magnetoelectrolysis with Aluminum Electrodes

2005 ◽  
Vol 52 (1) ◽  
pp. 29-34 ◽  
Author(s):  
Emilia Kouneva Sabeva ◽  
Ivan Dimitrov Dobrevski
Keyword(s):  
Aluminum Electrodes ◽  
Faraday Law

Area effects in aluminum electrodes

1960 ◽  
Vol 23 ◽  
pp. 390-395 ◽  
Author(s):  
W MACNEVIN ◽  
R WILSON
Keyword(s):  
Area Effects ◽  
Aluminum Electrodes

scholarly journals Removal of Pb, Cu, Cd, and Zn Present in Aqueous Solution Using Coupled Electrocoagulation-Phytoremediation Treatment

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Francisco Ferniza-García ◽  
Araceli Amaya-Chávez ◽  
Gabriela Roa-Morales ◽  
Carlos E. Barrera-Díaz
Keyword(s):  
Aqueous Solution ◽  
Current Density ◽  
Batch Reactor ◽  
Operating Time ◽  
Typha Latifolia ◽  
Optimal Conditions ◽  
Lead And Zinc ◽  
Parallel Arrangement ◽  
Aluminum Electrodes ◽  
Cadmium Lead

This study presents the results of a coupled electrocoagulation-phytoremediation treatment for the reduction of copper, cadmium, lead, and zinc, present in aqueous solution. The electrocoagulation was carried out in a batch reactor using aluminum electrodes in parallel arrangement; the optimal conditions were current density of 8 mA/cm2 and operating time of 180 minutes. For phytoremediation the macrophytes, Typha latifolia L., were used during seven days of treatment. The results indicated that the coupled treatment reduced metal concentrations by 99.2% Cu, 81.3% Cd, and 99.4% Pb, while Zn increased due to the natural concentrations of the plant used.

scholarly journals Application of Electrocoagulation Process for Dairy Wastewater Treatment

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Edris Bazrafshan ◽  
Hossein Moein ◽  
Ferdos Kord Mostafapour ◽  
Shima Nakhaie
Keyword(s):  
Reaction Time ◽  
Applied Voltage ◽  
Oxygen Demand ◽  
Dairy Wastewater ◽  
Operating Parameters ◽  
Pollution Load ◽  
Reliable Technique ◽  
Electrocoagulation Process ◽  
Aluminum Electrodes ◽  
Industry Wastewater

Dairy industry wastewater is characterized by high biochemical oxygen demand (BOD5), chemical oxygen demand (COD), and other pollution load. The purpose of this study was to investigate the effects of the operating parameters such as applied voltage, number of electrodes, and reaction time on a real dairy wastewater in the electrocoagulation process. For this purpose, aluminum electrodes were used in the presence of potassium chloride as electrolytes. It has been shown that the removal efficiency of COD, BOD5, and TSS increased with increasing the applied voltage and the reaction time. The results indicate that electrocoagulation is efficient and able to achieve 98.84% COD removal, 97.95% BOD5removal, 97.75% TSS removal, and >99.9% bacterial indicators at 60 V during 60 min. The experiments demonstrated the effectiveness of electrocoagulation techniques for the treatment of dairy wastewaters. Finally, the results demonstrated the technical feasibility of electrocoagulation process using aluminum electrodes as a reliable technique for removal of pollutants from dairy wastewaters.

Epitaxial Aluminum Electrodes on Theta Rotated Y-X LiTaO3 Piezoelectric Substrate for High Power Durable SAW Duplexers.

2004 ◽  
Vol 833 ◽  
Author(s):  
Osamu Nakagawara ◽  
Hironori Suzuki ◽  
Shuji Yamato ◽  
Masayuki Hasegawa ◽  
Hideharu Ieki
Keyword(s):  
Grain Boundary ◽  
High Power ◽  
Intermediate Layer ◽  
Deposition Temperature ◽  
Film Material ◽  
Epitaxial Relationship ◽  
Self Diffusion ◽  
Process Sequence ◽  
Aluminum Electrodes ◽  
Piezoelectric Substrate

ABSTRACTHigh power durable electrodes have been successfully grown on 38.5° rotated Y-X LiTaO3 piezoelectric substrates featuring epitaxial Al films with a pseudo-homoepitaxial Ti intermediate layer. We found that a two-step process sequence in the deposition temperature of an intermediate layer could make it possible for an Al/Ti structure to grow epitaxially on low-cut-angle Y-X LiTaO3. Specified epitaxial relationship was Al(111)<011>//Ti(001)<100>//LiTaO3(001)<100>. Duplexers with epitaxial Al electrodes had a breakdown power above 6 W and more than ten times longer lifetime in contrast to filters with polycrystalline electrodes of which the breakdown power is 3.4 W. Epitaxial electrodes with extremely less grain boundary can improve power durability because self-diffusion of Al atoms occurs mainly in the grain boundary of the film. Material variation of epitaxial electrodes will be discussed as well.

The Law Technology Study and the Mechanism Analysis of Small-Size Machined by Electro Jet Machining

2012 ◽  
Vol 499 ◽  
pp. 179-185
Author(s):  
Zhi Bo Yin ◽  
Fu Yuan Li ◽  
C.X. Wang
Keyword(s):  
Duty Cycle ◽  
Material Removal ◽  
Electrochemical Machining ◽  
Corrosion Mechanism ◽  
Mechanism Analysis ◽  
Technology Study ◽  
Original Experiment ◽  
The Law ◽  
Faraday Law ◽  
Main Factor

In order to research the Law technology and the equipment performance of Electro Jet, The institute developed an electro jet machine. Through a large number of experiments on this machine, the author concluded its process law and analysis the corrosion mechanism to the removed process. The results show that, duty cycle and frequency have a certain effect on the machine accuracy, and duty cycle is the main factor of aperture morphology. When duty cycle varies from 30%~40%, the stray corrosion is less. Frequency affects the depth seriously, based on the original experiment, voltage, duty cycle. Frequencies were not interactive within the scope of the study. The corrosion of anodic workpiece satisfies Faraday law by the study of material removal mechanism. Current efficiency is less than 1, and it’s 40%~60%.current density is 2~4.5A/mm2, that is larger than ordinary electrochemical machining.

Treatment of cooling tower blowdown water containing silica, calcium and magnesium by electrocoagulation

2009 ◽  
Vol 60 (9) ◽  
pp. 2345-2352 ◽  
Author(s):  
Z. Liao ◽  
Z. Gu ◽  
M. C. Schulz ◽  
J. R. Davis ◽  
J. C. Baygents ◽  
...  
Keyword(s):  
Cooling Tower ◽  
Target Species ◽  
Organic Additives ◽  
Dissolved Silica ◽  
Ion Removal ◽  
Ph Values ◽  
Silica Removal ◽  
Initial Ph ◽  
Aluminum Electrodes ◽  
Calcium And Magnesium

This research investigated the effectiveness of electrocoagulation using iron and aluminium electrodes for treating cooling tower blowdown (CTB) waters containing dissolved silica (Si(OH)4), Ca2 +  and Mg2 + . The removal of each target species was measured as a function of the coagulant dose in simulated CTB waters with initial pH values of 5, 7, and 9. Experiments were also performed to investigate the effect of antiscaling compounds and coagulation aids on hardness ion removal. Both iron and aluminum electrodes were effective at removing dissolved silica. For coagulant doses ≤3 mM, silica removal was a linear function of the coagulant dose, with 0.4 to 0.5 moles of silica removed per mole of iron or aluminium. Iron electrodes were only 30% as effective at removing Ca2 +  and Mg2 +  as compared to silica. There was no measurable removal of hardness ions by aluminium electrodes in the absence of organic additives. Phosphonate based antiscaling compounds were uniformly effective at increasing the removal of Ca2 +  and Mg2 +  by both iron and aluminium electrodes. Cationic and amphoteric polymers used as coagulation aids were also effective at increasing hardness ion removal.

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