Assessment and control of VOC emissions from waste disposal facilities

Environmental Impacts of Solid Waste Landfilling

“…New landfills can be designed to prevent landfill gas accumulation even if no productive use of the gas is planned. Landfill gas control systems have been well documented in engineering practice (Weiss, 1974;Stone, 1978a,b;Goleuke, 1980;Shen, 1981;Stearns and Peyotan, 1981;EMCON, 1983;Pacey, 1984;Ghassemi et al, 1986;Walsh et al, 1988;Shen et al, 1990). In addition to gas recovery and active gas pumping, control measures include: (1) the installation of impermeable barriers before site operations to secure the perimeter of the landfill (cement walls, clay trenches, impervious liner materials such as plastics, rubber, asphalt, polyvinyl chloride, high density polyethylene, etc.…”

“…The primary concerns of trace gas emissions are air pollution and potential health hazards. The emission of VOCs is believed to have the potential to increase cancer risks in local communities and contribute to ambient ozone formation (Shen et al, 1990). Trace gases may also affect methane generation by inhibiting the growth of methanogens, and may cause corrosion of gas recovery equipments (Dent et al, 1986).…”

Synthesis, characterization and photocatalytic activity of porous manganese oxide doped titania for toluene decomposition

“…The common VOCs such as halogenated hydrocarbons, ketones, alcohols and aromatic compounds have been widely used in many industries and are often found in the emission flow [7]. The sol-gel method synthesized anatase-rutile phase transformation of TiO 2 containing various amount of Mn 2+ ions have been recently reported and they studied the effects of manganese(II) dopants on acceleration of rutile phase formation [8].…”

Near Surface Soil Vapor Clusters for Monitoring Emissions of Volatile Organic Compounds from Soils

“…A major advantage of subsurface direct methods are that the soil vapor concentrations are higher than atmospheric concentrations, providing lower detection limits. 13 Most subsurface direct methods, however, require relatively large amounts of soil gas and disturb appreciable intervals of soil, so that the vertical resolution of constituent profiles is necessarily sparse. Vapor probes and vapor monitoring wells typically sample over 0.5 m depth increments.…”