Even if the peat soil gas system in a longer term can be characterized as a semi-closed system, the concentration gradient between atmosphere and soil suggests episodic events of a downward net flux of Hg0to the gas phase of the unsaturated zone of the peat. By use of Fick’s first law...
In contrast, in the reactor under an air atmosphere, the dissolved Hg remained low and even decreased with time, as was previously observed in our batch extractions. Figure 7. Solution composition in soil redox reactor experiments with soil sample T-S9: (a) total Hg, (b) redox potential,...
15. A process for burning coal to reduce the amount of mercury released into the atmosphere comprising applying a liquid sorbent composition comprising a bromine compound onto the coal; delivering the coal containing the sorbent into a coal burning furnace; injecting a powder composition into the fu...
The community composition analysis showed that Firmicutes, Proteobacteria and Actinobacteria were the dominant microorganisms. Mercury reductase can reduce Hg(II) to Hg(0). Reduced Hg(0) easily enters the atmosphere and global Hg cycle since it has low solubility and volatilization. Currently, the ...
Instead, the OM results suggest that the warmer and wetter climate in the Holocene facilitated soil and vegetation development, enhancing Hg accumulation in the lake catchment through plant uptake and binding to soil OM, the two main mechanisms of Hg fluxes from the atmosphere to terrestrial ...
% Na2O. A discharge vessel of a low-pressure mercury vapor discharge lamp having the above glass composition and comprising a protective layer appears to be very well resistant to the action of the mercury rare gas atmosphere. In addition, the glass is comparatively inexpensive. In known ...
The gas duct is supplied for the bypass of exhaust gases from the first air pollution control device 2 to atmosphere and can be installed to provide for a path for gas to flow in the event that emission of mercury or other pollutants from the industrial plant are below regulatory levels ...
The mercury emitted into the atmosphere may deposit on surfaces around the ASGM site, and soil is an important receiver of such mercury; the deposited mercury can be subjected to methylmercury formation in soil. Contaminated soil may become one of the continuous sources of mercury for the ...
Globally, 46% of mercury emissions were avoided in 2008, which means that 303 tonnes of mercury were not emitted into the atmosphere because of the mitigation measures in the power generation sector implemented during the period 1970–2008. Mercury emission reductions in power generation are ...
3) Perform DTA measurements in a nitrogen atmosphere for each of the pure compounds of kaolin, metakaolin, and calcium carbonate. Determine the location of the peaks identifying these compounds. The peaks of kaolin conversion into metakaolin and of calcium carbonate decomposition into calcium oxide wi...