Fate and Management of Pollution of Hexavalent Chromium Cr(VI) and Heavy Metals in the Zarqa River Basin in Jordan

Abstract

This paper focused on the fate of pollution and management of hexavalent chromium Cr(VI) and heavy metals in the Zarqa River Basin in Jordan. The Zarqa River basin was selected in this research because it contains the majority of Jordanian industries, which are the main source of pollutants including Cr(VI) and heavy metals. This will help in assisting water resource management organizations in decision making when coping with pollution. Industries related to sources and impacts of Cr(VI) and heavy metals were identified, and the administration measures were highlighted according to their role in improving water quality. An analysis of water samples along the Zarqa River was conducted between 2016-2019 to evaluate the heavy metals concentrations and compare the results with the Jordanian standards. Findings showed that Cr(VI) was below the allowable limits (<5 μg/l), and the heavy metals were within the allowed limits set forth in the Jordanian Standard. The ranges of water analysis values (µg/L) were;

Rational synthesis and characterization of temperature switching ZnFe2O4/ZnO nanocomposites used for anti-bacterial, anti-oxidant and seed germination properties

“…Numerous metal oxide nanostructures have been thoroughly investigated as potential antibacterial systems, including silver oxide, nickel(II) oxide, magnesium oxide (MgO), copper oxide, iron(II,III) oxide (Fe 2 O 3 , Fe 3 O 4 ), titanium(IV) oxide, zinc oxide (ZnO), tin oxide, and manganese(II,III) oxide nanomaterials (Mn 3 O 4 ). [7][8][9][10][11] ZnO nanostructures have been shown to have antibacterial activity towards a variety of dangerous species that are resistant to high temperatures and high pressures. 12 When compared to ZnO microstructures, ZnO nanostructures have better antibacterial activity due to their larger surface area.…”