The goal of this study was to determine the removal efficiencies of chromium, copper, lead, nickel, and zinc from raw wastewater by chemically enhanced primary treatment (CEPT) and to attain a total suspended solids removal goal of 80%. Operating parameters and chemical doses were optimized by bench-scale tests. Locally obtained raw wastewater samples were spiked with heavy metal solutions to o...

Cu₂ZnSnS₄ (CZTS) thin films were deposited on glass substrates by using spin-coating and an annealing process, which can improve the crystallinity and morphology of the thin films. The grain size, optical gap, and atomic contents of copper (Cu), zinc (Zn), tin (Sn), and sulfur (S) in a CZTS thin film absorber relate to the concentrations of aqueous precursor solutions containing copper chloride...

Revision: 4/95 Process/Product: Mechanical Paint Stripping Process Code: ID-01-01, ID-01-99 Substitute for: Solvent Stripping Waste Stream: Aircraft Chemical Stripping and Paint Wastes Applicable EPA Hazardous Waste Codes: D007, D008, D035 Applicable EPCRA Targeted Constituents: Toluene, Xylene, Methyl Ethyl Ketone, Acetone, n-Butyl Alcohol, Lead, Chromium, Zinc Compounds, Phenols, Cloroacetic ...

This study addresses the growing problem of soil salinity. In Mediterranean regions, disused solid waste landfills have given rise to disturbed ecosystems. At such sites, both mobile soil anions and cations have toxic effects on plants. Thus, detailed knowledge of these effects is needed for the phytoremediation of soils facing the problem of salinization. In this study, high chloride levels we...

The four ingredients of ORS (glucose, sodium chloride, potassium chloride and trisodium citrate) in the concentrations described in the document entitled “Oral Rehydration Salts: a new reduced osmolarity formulation” yield an effective solution for rehydration and for the prevention of dehydration. The addition of other ingredients, such as other minerals (especially zinc) or vitamins, has not ...

The reaction of 2-methyl-8-hy-droxy-quinoline and zinc chloride in acetonitrile affords the title solvated salt, (C(10)H(10)NO)[Zn(C(10)H(8)NO)Cl(2)]·2CH(3)CN, in which the Zn(II) atom is coordinated by an- N,O-chelating 2-methyl-quinolin-8-olate ligand and two chloride ligands in a distorted tetra-hedral geometry. The cation is linked to the heterocyclic anion by an O-H⋯O hydrogen bond and the...

Everted sacs of rat duodenum and ileum were used to study the effect of anions and organic ligands on the absorption of zinc. The uptake per unit weight of tissue was greater in duodenum than ileum, and it was influenced by the Zn concentration and pH of the incubation medium. The Zn uptake from inorganic salts in simple buffered medium varied in the order zinc sulphate greater than zinc chlori...