one of the most important issues in groundwater is its contamination by heavy metals. because of chemical stability and poor degradation of heavy metals and their ability to accumulate in living organism’s bodies, they can become toxic. for this, 15 water samples were collected from the groundwater resources of the oshnavieh plain in september 2015 ,with evenly distributed, and then were analyz...

In this study low-grade magnesium oxide (MgO) produced by calcinations of natural magnesite was used in mine water treatment using a laboratory-column device. The from the abandoned Osor (NE Spain) with MgO showed removal metals both and tailing leachates. PHREEQC numerical code Geochemist’s Workbench (GWB) were to evaluate speciation dissolved constituents calculate saturation state effluents....

Abstract Geochemical evaluation of the species and potential sources P in groundwater around Mataram City, Lombok Island, Indonesia can aid initial research on evaluating fate when detailed geological information is unavailable. The results ion chromatography inductively coupled plasma-optical emission spectroscopy show that concentrations PO 4 3– total dissolved (TDP) range from approximately ...

The Ring of Cenotes (RC) extends along the edge Chicxulub crater, in limestone platform Yucatan Peninsula (YP), where groundwater shows two preferential flow paths toward coast near Celestun and Dzilam Bravo towns. objectives this study were to describe regional hydrogeochemical evolution RC, its association with dissolution/precipitation minerals present pathway ocean. These results obtained b...

When water from the surface, e.g. from a lake, fl ows down through porous carbonate rocks, through a region with high hydraulic conductivity and encounters the water table of a phreatic aquifer, both waters mix by diffusion along their boundary. In a carbonate aquifer, where both surface and phreatic waters are saturated with respect to calcite, mixing corrosion causes renewed dissolution capac...

Recovered papers contain several chromophores, such as wood lignin and dyes. These have to be eliminated during paper recycling in order to produce white paper. Hydrogen peroxide under alkaline conditions is generally used to decolorize lignin, but its effect on dyes is limited. Copper(II)-phenanthroline (Cu-Phen) complexes can activate the oxidation of lignin by hydrogen peroxide. Hydrogen per...

Groundwater in a coastal sand aquifer is enriched in arsenic as a result of historical discharges from an industrial facility on the central NSW coast. Subsequent investigations also identified arsenic in the soil within the saturated zone down-gradient of the source area. Arsenic concentrations in soil and groundwater decrease markedly along a narrow flow path towards a tidal river some 300 m ...

Abstract Daily activities such as household, restaurants, markets and others especially in Pekanbaru city will produce waste. Waste produced is both organic inorganic. A biogas utilization study has been conducted at the Muara Fajar landfill 888.6 kW potential electricity obtained. Each leachate containing metals iron (Fe), lead (Pb), copper (Cu) others. The level of metal toxicity increasingly...

Abstract Fluorosis is the most widespread and serious endemic disease in abandoned Yellow River flooding delta of East China. One important causes fluorosis drinking high-fluorine groundwater. In this study, 313 groundwater samples were collected central part to address chemistry high-fluoride groundwater, 33 core from one borehole 150 m depth analyse vertical distribution characteristics total...