Cairo University

MTPR Journal


High Power Lasers for Determiningthe Level of Heavy metals in Egyptian fuel combustion power plants

Ahmed Asaad I. Khalil1, and A.I. Hafez2
1Chairman of Laser Sciences and Interactions Department, National Institute
of Laser Enhanced Sciences, (NILES), Cairo University, Giza 12613, Egypt.
2Egyptian Electricity Holding Company, Cairo, Egypt.

Vol./Issue: 19 , id: 259

We report on the spectroscopic analysis studies of the heavy metals content in differentEgyptian fuel combustion power plant slagsby employing high power lasers induced spectroscopic analytical technique (LISAT), energy dispersive X-ray analysisand inductively coupled plasma-optical emission spectrometry (ICP/OES) systems.The valuable metals were taken from the steam boiler bottom as solid waste residuefor industrial recycling recovered. The investigated composition analysis byemploying the calibration of thelaser spectroscopic techniquesis established on the registered collection spectra of the plasma flare generated by high power lasers. We examined the impact of altered experimental parameters to enhancethe sensitivity of our system. Moreover, the LISAToutcome accuracy in evaluating the heavy metals concentration in solid waste residues was validated using ICP/OES system. The predicted LISAT results werefound goodmatching with the ICP/OES results. The influence of parameters like liquid/solid, mixing time,digestion temperature,concentrations of acid and alkali on heavy metals recovery was also studied. The proposed protocols elucidated that the brilliant profit of LISAT for identifying of valuable metalspresent in solid waste residue sample surface and for examining the quality and purity of recovering metal manufactures.