Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Nanomaterials

An Overview on Most Effective DRAs in Crude Oil Pipelines

Raheeq I. Ibrahim; Manal K. Odah; Dhoha A. Shafeeq

Engineering and Technology Journal, 2019, Volume 37, Issue 10A, Pages 391-397
DOI: 10.30684/etj.37.10A.2

The flow of crude oil in pipelines suffers from a problem of fluid flow pressure drop and high-energy consumption for pumping especially in low temperatures environment. Flow can be enhanced using viscosity either reduction or drag reduction techniques. Drag reduction is considered as the most effective and most applicable method. The technique contributes in reducing the frictional energy losses during the flow by addition of little doses of materials knowing as drag-reducing agents. The present work focuses on more recent and most applicable drag-reducing agents used in crude oil flow enhancement via pipelines.

Preparation of NanoPorous Alumina by Anodization Method and Study of Their Structural Properties

Ali J Addie

Engineering and Technology Journal, 2016, Volume 34, Issue 5, Pages 176-185

Highly ordered nanoporous alumina structures have been prepared by electrochemical anodization for high purity Al-foils, electrolyte cell parameters have controlled to obtain optimum preparation conditions. Anodization potential, current density and electrolyte concentration effects on the prepared porous layer, surface morphology have been studied by scanning electron microscope and energy dispersive x-ray spectroscopy have used to analyze chemical composition of the samples.
Results of the SEM show that the pore size was about 20-80 nm and it depends strongly on the anodization potential & electrolyte concentration, the higher anodization potential can destroy the barrier layer & cause a hi-dissolution rate of aluminum in the electrolyte, while with low potential a porous layer cannot be obtained. The highest degree of order and hexagonal distribution of pores was obtained with anodization potential of 20 volts and 0.2M of the electrolyte concentration. Results of EDS confirm the formation of the aluminum oxide layer with traces of sulfur which belong to the electrolyte.