Mixing the Scenedesmus species with nanoclay and immobilizing in sodium alginate was evaluated as a sustainable treatment method for removing nitrate, atrazine, metals from groundwater. Gel beads containing hybrid mixture removed 100% of 10 mg/L N nitrate 98% 100 µg/L atrazine synthetic groundwater three days. The optimal amount found to be 0.30 mg per bead. experimental data fit well into Freu...

This work aims to utilize oxygen and hydrogen stable isotopes as tracers for determining the groundwater sources of recharge in central Nile delta. The analyzed water samples were collected from canals drains surface water, soil shallow, intermediate deep zones groundwater. isotopic data indicated that have higher content than recent river (? 18O = 2.39‰ ?2H 22‰) which reflect influence an evap...

Pathways of streamflow were investigated using geochemical tracers in ungauged headwater and higher-order streams in the semi-arid, forested, Valles Caldera, New Mexico. Combining diagnostic tools of mixing models and endmember mixing analysis (EMMA) shows that streamflow at East Fork Jemez River and San Antonio West (both > 120 km2) was controlled by mixing of three endmembers: near-surface ru...

introduction azarshahr plain is one of the plains adjacent tothe lake urmia that has been faced, during recent years,withover extraction of groundwater and alsoexposed to salinity enrichment. on the other hand, urmia lake with about 5000 square kilometers is the relatively vastlake with hyper-saline water as a rare biosphere resource in iran and the world. this lake has a great economic, social...

The quality of the water from a riverbank well field is result mixing ratios between surface and local regional groundwater. ratio controlled by complex processes involved in water–groundwater interactions. In addition, drawdown groundwater level greatly determines head differences river groundwater, as flowpath inside alluvial plain, which subsequently impacts origin well. common view, flows b...

Surface-groundwater interactions in intermittent rivers and ephemeral streams (IRES), waterways which do not flow year-round, are spatially temporally dynamic because of alternations between flowing, non-flowing dry hydrological states. Interactions surface groundwater often create mixing zones with distinct redox gradients, potentially driving high rates carbon nutrient cycling. Yet a complete...

EnviroMetal Technologies, Inc. (ETI), of Guelph, Ontario, Canada has commercialized a metal-enhanced dechlorination technology that the University of Waterloo, Canada developed to treat aqueous media contaminated with chlorinated volatile organic compounds (VOCs). The technology employs an electrochemical process that involves the oxidation of a reactive, granular iron medium to induce reductiv...

Water is an essential natural resource for sustaining life and environment which we have always thought to be available in abundance and a free gift of nature. Though groundwater is the major drinking water source, deterioration in its quality is questionable. In recent years, pollution by nitrate leaching from agricultural land has become an important concern. The notable toxic effect of nitra...

BACKGROUND High salinity and arsenic (As) concentrations in groundwater are widespread problems in the tidal deltaplain of southwest Bangladesh. To identify the sources of dissolved salts and As, groundwater samples from the regional shallow Holocene aquifer were collected from tubewells during the dry (May) and wet (October) seasons in 2012-2013. Thirteen drill cores were logged and 27 radioca...