aluminum anodes have been widely used in the cathodic protection of marine structures. however there are conditions in which these anodes become passivated or face some localized or unwanted corrosion, which influences their efficiency. addition of alloying elements such as zn and in not only have improved the efficiency of the anodes but also the effect of casting parameters such as ultra melt...

A range of novel 4-amino-6-arylpyrimidines has been prepared under mild conditions by an electrochemical reductive cross-coupling between 4-amino-6-chloro-pyrimidines and functionalized aryl halides. The process, which employs a sacrificial iron anode in conjunction with a nickel(II) catalyst, allows the formation of coupling products in moderate to high yields.

In this study electrocoagulation (EC) process with sacrificial aluminum anode was used to separate crude oil from synthetic oily wastewater emulsion. A preliminary experimental study was performed to evaluate the most accurate operating parameters, which are then used for the determination of crude oil removal efficiency. The experimental results indicated that electrocoagulation was very e...

The recovery of phosphate from wastewater has been attracting increasing attention. In this study, the technology an electrochemically enhanced sacrificial anode was applied to investigate process sewage. experimental results indicated that, when residence times ranged 20 120 s, and removal efficiencies 24.65% 95.27%. When current density 10 70 A/m 2 , 56.73% 95.17%. plate spacing 1 5 cm, 83.48...

Building porosity in monolithic materials is highly desired to design 3D electrodes, however ex-situ introduction or in-situ generation of nano-scale sacrificial template is still a great challenge. Here Al-Si eutectic droplet templates are uniformly injected into bulk Si through Al-induced solid-solid convection to construct a highly porous Si framework. This process is concomitant with proces...

An inverse model, useful for interpreting pipeline survey data in terms of the physical condition of pipe coating, was developed by coupling a boundary-element forward model with a nonlinear regression algorithm. The forward model accounted for the passage of current through a three-dimensional homogeneous medium and yielded soil surface potentials for given pipe/anode configurations and pipe c...

Repair of chloride contaminated concrete with fresh concrete passivates the steel in the repair region, but that also elevates the steel potential in the surrounding, still contaminated concrete. Thus, the risk of corrosion increases in the surrounding region. Sacrificial anodes are being promoted as a means to avoid this risk by cathodically polarizing the steel in the repair and surrounding r...