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May 20, 2020Open AccessArticle
Chemical water treatment problems such as disinfection by-products (DBPs) generation have urged on the search for better water treatment technologies such as electrochemical water technologies that have been applied successfully in different water/wastewater pollutants removal. However, their large expansion is hindered by similar DBPs troubles. Throughout the electrochemical process, such carcinogenic substances can be produced depending on the electrode material and applied voltage. This work ...
Sep 18, 2019Open AccessArticle
The research was aimed at the antibacterial studies and cytotoxicity of aqueous trona extract of Sclerocarya birrea (marula) stem bark. Extraction of the stem bark was carried out using decoction method from the dried stem bark of marula. The extract was subjected to phytochemical screening, antibacterial and cytotoxicity test. The extract indicated the presence of tannin, saponins and alkaloids with the absenc ...
May 29, 2019Open AccessArticle
Geometry configurations of joining partners (similar/dissimilar metals) are important to achieve effective and smooth joint in electromagnetic (EM) compression welding. Accordingly, design of welding tool (multi-turn coil) becomes challenging [1]. EM welding of flared D9 flyer tube to SS316 L (N) straight cylindrical plug has been performed under a discharge voltage of 15 - 17 kV with coil current 230 - 250 kA at ...
Oct 31, 2018Open AccessArticle
Steel corrosion is a major and costly problem to industrialists and construction workers. The inhibiting effect of dioctyl phthalate on the corrosion of mild steel was carried out in 1.0 M solution of HCl as the corrosion medium using the weight loss method. The adsorption of the dioctyl phthalate on the surface of the mild steel in 1.0 M HCl was found to follow the physisorption mechanism and also follow the first order rate law. ...
Sep 30, 2018Open AccessArticle
Ba5NdTi3V7O30 is a tungsten
bronze structured ceramic sample, prepared by Solid State reaction route
at high temperature (950℃). The room temperature XRD analysis confi ...
Mar 28, 2018Open AccessArticle
Conventional electrolytic
cells are usually cumbersome and simulated with fragile open ended glass wares
such as beakers, tubes, troughs or tanks which are prone to interference and
contamination. Electrolytic cell was designed by allotting dimensions for its length:
12.0 cm, breadth: 6.0 cm and height: 8.0 cm to the cell; its casing for 9.0 V
power source was allotted 2.5 cm length, 2.5 cm breadth and 2 ...
Jul 26, 2016Open AccessArticle
Disposal of lead laden cupels is proving problematic to mining and
metallurgical companies due to environmental and health issues. In this study
the optimization of operation parameters for the electrode position of lead
metal from acetic acid leachant was carried out. The effects of voltage,
temperature, concentration, size of electrode and the effect of the space between
the electrodes were investigated. Acetic acid (10%) was us ...
Jan 27, 2016Open AccessArticle
The present study describes the catalytic activity of the platinum coated
Nafion membranes towards oxygen reduction reaction in proton exchange membrane
fuel cells. In contrast to the conventional three layered structures of the gas
diffusion electrode, as-made gas diffusion electrodes are two layered in which
the platinum electrocatalyst are deposited directly onto the Nafion membrane. Spin-coating
method and impregnation-reduction approaches were used to synthesize Pt-coated
Nafion membranes. ...
Dec 10, 2015Open AccessArticle
We have verified through an electrochemical technique (capacity, impedance
and photo-electro- chemical measurement) and also through an analytic technique
of auger spectrometry that passive films formed on inconels 600 and 690 are comprised of two
layers. This has led us to establish precise links between the chemical composition
of passive films formed on inconels and their electrochemical properties. The results
obtained at different frequencies show the existence of two areas. The passive oxi...
Jun 19, 2014Open AccessArticle
Titania nanopores were fabricated on silicon substrate. Ti thin films (600 nm) were first deposited by radio-frequency (RF) magnetron sputtering at two substrate temperatures and then anodized in glycerol electrolytes containing NH4F. The morphology and structure were identified by means of scanning electron microscopy (SEM), X-ray diffractometry (XRD). The effect of the temperature on the Ti thin films deposited by RF magnetron sputtering and the applied voltage on nanopore morphology were inve...
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