A method and apparatus for carrying out highly efficient exothermal reaction between nickel and hydrogen atoms in a tube, preferably, though not necessary, a metal tube filled by a nickel powder and heated to a high temperature. preferably, though not necessary, from 150 to 5000 C are herein disclosed. In the inventive apparatus, hydrogen is injected into the metal tube containing a highly pres...

The aim of this study was to measure the levels of nickel in the skin contaminant layer of workers involved in specific processes and tasks within the primary nickel production and primary nickel user industries. Dermal exposure samples were collected using moist wipes to recover surface contamination from defined areas of skin. These were analysed for soluble and insoluble nickel species. Pers...

This paper presents a method for the production of high-purity anhydrous nickel(II) perrhenate. The method comprises sorption of nickel(II) ions from aqueous nickel(II) nitrate solutions, using strongly acidic C160 cation exchange resin, and subsequent elution of sorbed nickel(II) ions using concentrated perrhenic acid solutions. After the neutralization of the resulting rhenium-nickel solution...

This research work investigates the application of KOH impregnated jackfruit leaf powder to remove Nickel from wastewater. The removal characteristics of Nickel from wastewater was investigated under various operating variables like contact time, adsorbent dosage, initial metal concentration, solution pH, temperature and stirring speed. The results showed that the KOH impregnated jackfruit leaf...

A sonochemistry-based synthesis method was used to produce nanocrystalline nickel oxide powder with ≈ 20 nm average crystallite diameter from Ni(OH)(2) precursor. Ultrasound waves were applied to the primary solution to intensify the Ni(OH)(2) precipitation. Dried precipitates were calcined at 320°C to form nanocrystalline NiO particles. The morphology of the produced powder was characterized b...

A 26-year-old female chemist formulated polymers and coatings usually using silver ink particles. When she later began working with nickel nanoparticle powder weighed out and handled on a lab bench with no protective measures, she developed throat irritation, nasal congestion, "post nasal drip," facial flushing, and new skin reactions to her earrings and belt buckle which were temporally relate...

This study was performed to establish a convenient mouse model for the evaluation of nickel allergy. For sensitization, 0.2 g of nickel sulfate in petrolatum was applied 4 times every other day to the shaved dorsal skin. Seven days after the first application of the nickel sulfate salt sample, the antigen-specific metal allergy reaction was estimated based on the swelling response of the footpa...

Nickel oxide (NiO) nano-particles were produced via a rapid microwave-assisted method. Ni(OH)2 precursor was obtained by slow drop-wise addition of 0.1M sodium hydroxide to 0.1M nickel nitrate. The mixture was vigorously stirred until the pH reached 7.2. The mixture was then irradiated with microwave to deposit Ni(OH)2 at an intensified precipitation rate. Drying of the precipitate at 320°C res...

The purpose of this paper and a test case study is to assess a method of ab initio structure solution from powder diffraction data using f' difference techniques. A theoretical foundation for the approach used is first provided. Then, with a test case (nickel sulfate hexahydrate), it is shown that both the position of the anomalous scatterer (Ni) can be determined and the structure can be devel...

The ability of Clinoptilolite powder to adsorb Ni (II) ions from wastewater which was taken from a nickel plating factory was investigated through batch experiments. The Ni (II) adsorption was found to be dependent on mass of adsorbent, contact time, pH value of solution and the speed of agitation. The experimental isotherms data were fitted into Langmuir and Freundlich models. The monolayer ad...