Reducing agents-Enhanced electrokinetic Soil Remediation (EKSR) was performed for the removal of chromium (Cr), cobalt (Co) and nickel (Ni) from contaminated soil. The reducing agents oxalic acid and ascorbic acid were investigated under constant voltage gradient (2.0 V/cm), current changes, pH, redox potential, concentration changes and removal performance of Heavy Metals (HMs). The result...

Cadmium is an extremely toxic metal, which even in low levels is harmful to the human body, animals and also plants. Human manufactures such as cadmium-nickel batteries and pesticides, plastic, make the earth polluted with cadmium; therefore removal of the cadmium Water is vital for human and animal. Scientists use different methods for cadmium removal including adsorption, precipitation, i...

The influence of precipitation of intermetallics on changes in Young’s modulus of nickel and zirconium base alloys has been discussed in this paper. This study indicates that the change in the modulus due to thermal ageing in these alloys is essentially governed by the change in the modulus of the matrix due to removal of precipitation forming elements. 1.0 Introduction Mechanical properties in...

Adsorption of Nickel(II) ion onto Activated Carbon prepared from Delonix regia pods activated with Zinc chloride (DRZAC) under various experimental conditions were studied. Batch mode adsorption experiments were conducted. The characteristics of the DRZAC were determined by SEM, XRD, FTIR, BET analysis and pHZPC. The maximum removal efficiency of Ni(II) ion is 85% at pH 6. Under the chosen cond...

The ability of bael tree (BT) leaf powder to adsorb nickel, Ni, from aqueous solutions has been investigated through batch experiments. The Ni adsorption was found to be dependent on adsorbent dosage, initial concentration and contact time. All batch experiments were carried out at natural solution pH and at a constant temperature of 30°C using wrist-action shaker that operated at 120 rpm. The ...

Removal of nickel ions from aqueous solutions containing 1-100 mg l(-1), using pine tree (Pinus nigra) materials modified with HCl, was investigated on a laboratory scale. For this purpose, two natural adsorbents such as the modified pine bark (MPB) and the modified pine cone (MPC) materials with HCl solution were studied. At first, the required concentration level of the HCl solution for the m...

INTRODUCTION The Memokath® ureteric stent is a thermo-expandable titanium-nickel alloy.(1) Its use is not recommended in stone formers and patients with functional stenosis.(2) Unlike conventional plastic ureteric stents, it is a semi-permanent prosthesis. However, should removal be required simply flushing the stent with cold water returns it to a soft and pliable form. As these stents do not ...

The present study describes the effectiveness of removal of selected aqueous anions by several metalloligs, i.e., metal derivatives of a commercially available immobilized ligand, IMLIG, Octolig. This material consists of polyethylenediamine moieties covalently bound to a high-surface area silica gel (CAS Registry number = 404899-06-5). The metals involved are copper, cobalt, iron, nickel, mang...

A novel lignosilicate (LS) composite was synthesized from pre-extracted (hot water, 80% ethanol, 0.3 N NaOH) lignin of rice husk (RH) using TEOS as matrix. The extracted lignins were subjected to surface modification by acetylation followed by in situ synthesis of lignosilicate (LS) composites by sol-gel method for application in nickel removal. LS were characterized by FT-IR, scanning electron...

A technique in which a micromechanical resonator is operated at large amplitudes while in situ localized annealed to temperatures exceeding 880 o C is shown to be an effective method for both removal of surface contaminants and for possible " redistribution " of the structural material towards substantially higher quality factor Q and greatly enhanced drift stability. The technique not only pro...