Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : electrochemical

Removal of high concentration phenol from aqueous solutions by electrochemical technique

Shaimaa T. Alnasrawy; Ghayda Y. Alkindi; Talib M. Albayati

Engineering and Technology Journal, 2021, Volume 39, Issue 2A, Pages 189-195
DOI: 10.30684/etj.v39i2A.1705

In this study, the ability of the electrochemical process to remove aqueous high concentration phenol using an electrochemical cell with aluminum anode and cathode was examined. The removal rate of phenol was monitored using different parameters phenol concentration, pH, electrolysis time, current density, and electrode distance. Obtained results indicated that the low removal rates of phenol were observed at both low and high pH. However, the removal rate of phenol increased with an increase in the current density, each electrochemical process conditions need a certain electrodes distance. removal rate of phenol decreased with the increase in the initial phenol concentration. The maximum removal rate of phenol obtained from this study was 82%.

Synthesis of Silver Nanoparticles by Electrochemical Method

Mohammed J. Haider; Mohammed S. Mahdi

Engineering and Technology Journal, 2015, Volume 33, Issue 7, Pages 1361-1373

In this present study, we present a method for the preparation of electrochemical silver nanoparticles.we employed two electrodes of pure silver with length 8-12 cm, thickness of 0.4 mm and width 8-10 mm inside a container full of DDDW with distance 10 mm between them and with potential difference about 27 volt.
For the purpose of analyzing of optical, structural and morphological properties of the surface that describe the nature, the charging and the voltages of these materials by using the UV-VIS, X-ray, Z-potential, SEM, AFM, and TEM were employed.Size and properties werecontrolled in high concentrations with good stability for long period without aggregation. Colloidal silver-NPs with grain size of 30-50 nm had beenproduced at optimum conditions.

Hardness Removal from Drinking Water Using Electrochemical Cell

Khairi Resan Kalash; Inmar N.Ghazi; Mohammed A. Abdul-Majeed

Engineering and Technology Journal, 2015, Volume 33, Issue 1, Pages 78-89

In this work, the removal of hardness was studied from tap water taken from Aljadriya municipal water network-Baghdad. A parallel plate electrochemical cell was constructed using two graphite electrodes as anode, and three aluminum electrodes as cathodes. The electrodes were connected to a power supply that provides direct electrical current to the cell. Results showed that a removal efficiency of 85% can be obtained at pH of 7.5and electrical voltage of 28.5 volt with retention time of 60 minutes. The high efficiency for hardness removal suggested that the electrochemical technique might be used as an alternative technique for hardness removal.