Mercury in the Environment Articles

395 Results found
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  • Subcategory: Mercury in the Environment ×

Reducing Mercury Impacts in Small-Scale Gold Mining

by United Nations Environment Programme (UNEP)  (Jul. 25, 2014)

Despite knowing full well the dangers of mercury, millions of small-scale gold miners across the globe continue to use the metal to separate gold from ore - usually because they have little other choice. The mercury is mixed into ore and combines with the gold in a compound that can easily be scooped out and squeezed into a small bar of amalgam. ...

Pollution monitoring in Cement Industry

by Environnement S.A  (Jul. 24, 2014)

The rising use of waste based fuels in the cement industry, both for economic and Environmental objectives, combined with the strengthening of air emission regulations around the world is pushing many operators to face a wider list of pollutants to monitor this, with associated costs. The design of appropriate solutions meeting local regulation is ...

New Report Shows Decline in Carbon Dioxide and Other Pollutants from U.S. Power Plants, but State and Power Company Emissions Vary Widely

by Ceres  (May 28, 2014)

Electric Power Industry is Transitioning to Lower-Carbon Sources and Positioned to Meet New EPA Carbon Standards A new report on U.S. power plant emissions from the country’s top 100 electric power producers shows a downward trend in ...

Continuous Mercury Monitoring Benefits Cement Plants

by Gasmet Technologies Oy  (May 13, 2014)

Antti Heikkilä from Gasmet Technologies highlights the challenges faced by mercury monitoring in cement kilns, and explains how a new continuous mercury monitoring system addresses these issues and provides process operators with an opportunity to improve environmental performance and demonstrate compliance with forthcoming legislation. ...

Migration and transformation behavior of volatile phenol in the vadose zone

by IWA Publishing  (Aug. 13, 2014)

Research on the migration and transformation of phenol with space and temporal variability in the vadose zone is hindered by monitoring technology in field experiments. Four column experiments were conducted to investigate the effect of porous media size, volatilization, biological effects, and oxidation on the transport of phenol in the vadose ...

Accumulation of mercury and cadmium in rice from paddy soil near a mercury mine

by John Wiley & Sons, Ltd.  (Aug. 2, 2014)

Paddy soil and rice (Oryza sativa L.) in the Wanshan mining area in Guizhou province have been contaminated by toxic trace metals such as cadmium (Cd) and mercury (Hg). This study examined correlations between the types and physico‐chemical parameters of the soil and the contents of trace metals and the different forms of Hg in rice. The study ...

Methyl mercury and stable isotopes of nitrogen reveal that a terrestrial spider has a diet of emergent aquatic insects

by John Wiley & Sons, Ltd.  (Jul. 31, 2014)

Terrestrial spiders transfer methyl mercury (MeHg) to terrestrial consumers like birds but how spiders become contaminated with MeHg is not well understood. In the present study, we used stable isotopes of nitrogen in combination with MeHg to determine the source of MeHg to terrestrial long‐jawed orb weaver spiders (Tetragnatha sp). We ...

Case study: in-situ surfactant enhanced DNAPL recovery pilot project-refinery site montreal canada

by Ivey International Inc.  (Jul. 10, 2014)

Project Facts Active chemical refinery (20 acre site) Several DNAPL (chlorobenzene and dichlorobenzenes) and BTEX stored on-site Multiple DNAPL and BTEX spill events reported over a site history extending back to the 1950's. DNAPL and BTEX impacts to both the local soil and groundwater covering an 8 acre (+) area Risk: potential risk for ...

Case study: surfactant enhanced HVDPE remediation of petroleum contaminated soil, bedrock and groundwater

by Ivey International Inc.  (Jul. 10, 2014)

Recalcitrant petroleum product residuals sorbed in fine grain soils and fractured bedrock Persistent concentrations in groundwater after 12 years of remediation - including pumping, HVDPE Obtained regulatory approval for Ivey-sol surfactant application in spring 2009 Pilot Test Approach - Focused Short-Term Surfactant Injection/Extraction to ...

Surfactant enhanced in-situ remediation of DNAPL impacted soil and groundwater - Montreal refinery

by Ivey International Inc.  (Jul. 10, 2014)

Abstract A Montreal chemical refinery reduced the dichlorobenzene and other dense non-aqueous phase liquid (DNAPL) impacts on the soil and groundwater where a railway line is adjacent to an above ground storage tank farm. Ivey-sol® surfactant mixtures were injected three times during a two week pilot test, into a series of in-situ wells. The ...

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