Dr. Salma Abdelghaffar Hassan Alamin1, Dr. Alawia Abdalla ELawad2, Prof. Imad-eldin Ahmed Ali Babiker3, Dr.Osman Mirghani Mohamed Ali4
1. Environmental and Natural Resources and Desertification Research Institute (ENRDRI) Corresponding author.
2. Alnelaneen University.
3. Agriculture Research Cooperation (A R C).
4. University of Khartoum.
Abstract: Heglieg oil field (HOF) is located in West Kordofan State. This work aims to assess some produced treated water chartraization. Treated water from HOF Water samples were collected in clean containers after treatment physical and chemical properties of treated water in HOF area were investigated. The pH and electric conductivity (EC) were measured using a pH meter and a conductivity meter, respectively. Percentage amount of oil and grease was measured using oil and extraction method with Soxlet apparatus. The concentrations of metal elements of the water, samples were measured using an atomic spectrophotometer. In Heglieg oil field the treated water was strongly alkaline (pH 8.9), EC (1.4 dS/m) and oil and grease was 1.3 mg/L. These results are within the standard of the Ministry of Petroleum. The elements detected in meq/l were Na (204), Mg (61.77), K (2.24), Fe (1.163), Cr(0.010), Ca(0.013), Cu(0.006), Co(0.001), Cd (0.094) while Pb and Mn were very trace.
Pages: 105 – 110 | Full PDF Paper
Synthesis of Silver Nanoparticles Using Poly(acrylic acid) as a Capping Agent for Conductive Ink in Inkjet Printing Application
Chien Mau Dang, Khanh Kim Huynh and Dung My Thi Dang
Institute for Nanotechnology, Vietnam National University-Ho Chi Minh City, Community 6, Linh Trung Ward, Thu Duc District, 70000, Ho Chi Minh City, Vietnam.
Abstract: The main purpose of this research is to synthesize stable silver nanoparticles in solution which could be used as inkjet printing conductive ink. For this purpose, poly (acrylic acid) was used as a capping agent to protect and prevent silver nanoparticles from agglomeration. In this study, we prepared silver nanoparticles in an aqueous solution or ethylene glycol by reducing silver nitrate in the presence of a surface capping agent and a reducing agent, ethanolamine (mEA). The obtained silver nanoparticles solution was characterized by using Ultraviolet-visible (UV-Vis) spectrophotometry, X-ray diffraction (XRD) and Transmission electron microscopy (TEM). The surface plasmon resonance peak of the silver colloidal solutions showed absorption peak from 410 to 420 nm. TEM images illustrated that the morphology and size distribution of silver nanoparticles with the average sizes were 22 nm in water and 3 nm in ethylene glycol. The silver colloidal solution was stable up to 10 wt% of silver nitrate and for at least three months. The synthesized silver nanoparticle solution, which had good stability, unclogged and the highest possible concentration of silver nanoparticles could be used for ink-jet conductive ink application.
Keywords: Silver nanoparticles, capping agent, electrical conductivity, inkjet printing.
Pages: 111 – 119 | Full PDF Paper