نتایج جستجو برای: chlor alkali
تعداد نتایج: 16853 فیلتر نتایج به سال:
The FM01-LC is a laboratory-scale, electrochemical filter-press cell with a projected electrode area of 64 cm and a rectangular electrolyte flow channel which was originally based on the larger FM21-SP electrolyser of 2100 cm projected electrode area designed for the chlor-alkali industry then diversified to other applications. Many laboratories and industries have utilised this type of control...
During four decades, the Ria de Aveiro was subjected to the loading of mercury from a chlor-alkali industry, resulting in the deposition of several tons of mercury in the sediments. The present study evaluates the impact of this disturbance and the recovery processes, temporally and spatially, by means of examining the richness of the species of salt marsh plants and mercury concentrations in s...
Total gaseous mercury (TGM) has been monitored at Champ sur Drac, a suburban site of Grenoble in southern east France. TGM measurements have been made over 4 periods of approximately 10 days throughout 1999-2000 using cold vapour atomic fluorescence absorption technique. The first monitoring campaign was initiated on November 4, 1999, followed by three other campaigns respectively on January 12...
TheNorth ForkHolstonRiver (NFHR) historically supported 33 unionidmussel species downstream of Saltville, VA. Because of industrial contamination over decades from a chlor-alkali plant, a U.S. Environmental Protection Agency Superfund Site (SITE) was created with Hg andMeHg designated as contaminants of concern.Mussel surveys were conducted at 18NFHR locations to determine abundance, species ri...
A Hg-contaminated site in B.C. Province, Canada was caused by the previous operation of Hg-cell in chlor-alkali process for over 25 years. The soils and groundwater at the site are highly contaminated with mercury. An analysis of groundwater at the site has shown that most of the mercury is bonded with humic and fulvic acids (HFA) in colloidal form. The Hg-HFA colloids can be completely removed...
The exploitation of groundwater in arid and semi-arid areas, especially basins where is intensively exploited, likely to have adverse effects on the originally fragile ecological environment, which also greatly alter hydrogeochemical evolution process. Over-abstraction Haolebaoji watershed Ordos Basin located regions has led a series changes system, attracted considerable attention from environ...
Manganese dioxide nanowhiskers (MDN), prepared by the reduction of potassium permanganate by ethyl alcohol has been investigated as an adsorbent for Hg(II) removal from aqueous medium. Characterization of the as-synthesized material was carried out using transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive analysis of X-rays (EDAX), X-ray photoelectron s...
Aquatic ecosystems are an essential component of the biogeochemical cycle of mercury (Hg), as inorganic Hg can be converted to toxic methylmercury (MeHg) in these environments and reemissions of elemental Hg rival anthropogenic Hg releases on a global scale. Quantification of effluent Hg releases to aquatic systems globally has focused on discharges to the global oceans, rather than contributio...
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