Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Characterization

Recycling of an Effluent Soot from Kademia Diesel-Power Plant as a Carbon Source for the Synthesis and Characterization of NanoCarbon

Adel Sharif Hamadi

Engineering and Technology Journal, 2014, Volume 32, Issue 3, Pages 386-395

Soot obtained as an effluent from Kademia diesel-power station was recycled and utilized as feedstock for preparation of nano carbon particles. The porosity, surface area analysis featured by BET N2 adsorption, proximate analysis, Fourier Tranform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) were employed for the structural and morphological characterization of the halocarbon formed.
Ultimate analysis of the fuel oil samples indicate that the H/C ratio of nanospheres is less 0.085 which is an indication of crystallization in the nanomaterial formed.
The results obtained from BET analysis had specific surface area increases to 50 m2/g, comparing with 28 m2/g of that the raw soot. SEM results shows a variations in size and shape of nanocarbon particles formed. The FTIR spectrum of soot shows characteristic signals in the range of 400-4000 cm-1 where corresponding to SO4 2- (600 cm-1), NO3 - (850 cm-1), CO3 2- (900 cm-1), SiO4 4- (1050 cm-1), C–OH aromatics (1250 cm-1), NO3 - (1300 cm-1), CO3 2- (1650 and 1720 cm-1), C=CH alkenes (2930 cm-1), and C – OH alcohols (3400 and 3550 cm-1). XRD investigation indicates the presence of large amount of amorphous material in association with nanocarbon at moderately high intensity broad peak; 2θ=23.5140o, where at the low intensity; 2θ=48.6389o indicate of the low quality of nanomaterial presented in the soot.

Extractions of Tin Metal from Electronic Circuit Scrap by Wet Techniques

Mohammed A. Abbas

Engineering and Technology Journal, 2012, Volume 30, Issue 20, Pages 3603-3615

According to the larger accumulation of electronic equipment, then new
environmental techniques (wet extraction process) are studied to treat these
scrap and produced a utilized metal such as tin metals that used in different
industrial processes.
Different experimental are carried out in this studied in order to optimize the
production of Tin metal from scrap circuits (stannous chloride) such as
temperature of reaction (30, 35, 45, 55, 60 c°) concentration of scrap
introduced (5.0, 7.0, 10.0, 13.0, 15% wt.) and residence time through smelting
step as (2.0, 2.5, 3.5, 4.5, 5.0 hrs) respectively.
A characterization and monitoring for production metals occurred by the use of
x-ray scanning electron microscope to scan the internal structure of Tin metal,
also an atomic absorption to determine the concentrations of Tin agglomerates.
The results show that; optimum conditions that produced high percent of
Tin metal from stannous chloride are (53°c temperature of residence, 8.5 wt%
concentration of and 4.7 hrs residence time for reduction step at 2°c/min
rating ratio). Afterward for smelting stage are (388°c curing temperature and 5
hrs residence time).
Also the characteristic results proved that; agglomerate of Tin metal
products appeared at these optimum conditions at x-ray and atomic absorption
as 0.25 wt. % for standard blank metal as Cu and clear agglomerate of Tin
metal in the electron microscope.