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CPOTE2020 logo
CPOTE2020
6th International Conference on
Contemporary Problems of Thermal Engineering
Online | 21-24 September 2020

Abstract CPOTE2020-1034-A

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Characterization and treatment of solid wastes by thermal plasma

Miqad ALBISHI, King abdulaziz City for science and Technology, Saudi Arabia
Imad GHILOUFI, Al-Imam Mohammad Ibn Saud Islamic University, Saudi Arabia
Ahmed AL-HARBI, King Abdulaziz City for Science and Technology, Saudi Arabia
Ibrahim ALSHUNAIFI, King Abdulaziz City for Science and Technology, Saudi Arabia
Abdullah ALBELADI, King Abdulaziz City for Science and Technology, Saudi Arabia

In this paper, we studied the treatment and evaluation of phosphate wastes resulting from phosphate production by using thermal plasma technology. We analyzed the wastes through X-Ray fluorescence ( XRF ) is an X-ray instrument used for routine and relatively nondestructive chemical analyzes of rocks, minerals, sediments, and fluids in phosphate waste sample, a scanning electron microscope ( SEM ) is an electron microscope that produces images of a phosphate waste sample by scanning its surface with a focused beam of electrons, an energy-dispersive X-ray spectroscope ( EDXS )is an analytical technique used for the elemental analysis of a phosphate waste sample, and inductively coupled plasma ( ICP ) is an analytical technique used for detecting trace metals in phosphate waste sample. Analysis of phosphate waste showed various elements, which were toxic elements, heavy metals, fluorine ( F ), chlorine ( Cl ), sulfur ( S ), and phosphorus ( P ). We used a plasma reactor to separate toxic elements from metals such as silicon ( Si ), aluminum ( Al ), and magnesium ( Mg ) by a thermal plasma system. The study showed that high temperature with air gas caused a reduction in the concentration of elements and reduced the amount of phosphate waste. In addition, we found that the forms of waste size are very irregular and have different particle sizes ranging from ( 20 ) to ( 50 ) μm.

Keywords: Characterization technics, Plasma technology, Waste treatment, Wastes, Thermal plasma
Acknowledgment: The authors acknowledge the financial support from the Energy and Water Research Institute, King Abdulaziz City of Science and Technology. Project No. 31-461. “Treatment of waste from Desalination Plants Using Plasma”.