In this study, a novel, cost-effective and environmentally friendly activated carbon/chitosan hybrid material (ACCHM) was synthesized by incorporating surface properties of both the activated carbon derived from rice husk and chitosan extracted from “Black Tiger” shrimp shells to generate a highly functionalized porous material with enhanced Pb (II) adsorption capacity for water purification.
Strontium substitution for lead in $\mathrm{Pb}_{(8-x)} \mathrm{Sr}_x \mathrm{Na}_2\left(\mathrm{PO}_4\right)_6$ was analyzed using XRD, SEM, and Rietveld refinement techniques. All samples were synthesized using ceramic and semi-ceramic technologies. Pure apatite was formed in the composition from $x=0.00$ up to $x=2.75$. The results indicate that the samples’ collected compositions agree with the values calculated.
This study focuses on identifying some of the heavy and toxic elements concentration in several sources of water in Diyala Governorate in Iraq, such as the Diyala River and the Khіrisan River. The samples of tap water and bottled drinking water were taken three water wells from and two companies. The elements under study were: lead, cadmium, copper and chromium. Flame atomic absorption spectroscopy has been used to determine the concentrations.