Halocarbon Articles & Analysis
10 articles found
EPA Clean Air Act Section 608, the EU F-Gas Regulation (EU) 2024/573, and Canada’s Federal Halocarbon Regulations (2022) require leak detection, periodic inspections, or automated monitoring in systems containing certain refrigerants. ...
In France, large reductions were achieved in N2O emissions from adipic acid production, but CO2 emissions from road transport and HFC emissions from consumption of halocarbons increased considerably between 1990 and 2013. Poland and Spain are the fifth and sixth largest emitters in the EU-28, accounting for 9% and 7% of total EU-28 GHG emissions in 2013. ...
The case studies addressed: Fish stocks; Medical radiation; Benzene; Asbestos; PCBs; Halocarbons and the ozone 'hole'; DES pregnancy pills; Antibiotics as animal growth promoters; Sulphur dioxide and acid rain; MBTE in petrol; Contamination of the Great Lakes; TBT marine antifoulants and sex change in sea snails; Hormones as growth promoters; Mad cow disease. ...
Unfortunately, the length of time chemicals cause destruction of the ozone depends upon the refrigerant being broken down, i.e. chlorine last for 2 years and other chemicals for much longer.The main causes of ozone layer depletion are the gases fluorine, chlorine and bromine, which are found in manmade halocarbons. Ozone destruction and the depletion of important chemical ...
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Combustion of coal, oil, and natural gas, and to a lesser extent deforestation, land-cover change, and emissions of halocarbons and other greenhouse gases, are rapidly increasing the atmospheric concentrations of climate-warming gases. ...
The attenuation potential of methane (CH4) and of selected volatile organic compounds (VOCs) was compared in four types of compost materials using dynamic flow column experiments over a period of 255 d. Garden waste compost mixed with wood chips showed the highest steady-state CH4 oxidation rate (161 g m–2 d–1), followed by a commercial compost product Supermuld (110 g m–2 d–1). In the column ...
Further, chlorine gas chemically combines with organics, present in waste water to form halocarbons, which are known to h2 carcinogenic compounds and possess objectionable odors. ...
The chemical handling hazards, potential release of halocarbons into the environment as a result of the chemical reaction of chlorinated water with the odorous gases, and pumping costs are other operating considerations with a chemical oxidation treatment system. ...
Traditional methods of using chemical oxidation and high temperature destruction result in the formation of secondary products, such as chlorine gas, organic halocarbons or nitrogen oxides. In this study, biotrickling filter technology was evaluated at the Villa Hills wastewater treatment plant, operated by Sanitation District No. 1 in Northern Kentucky. ...
Laboratory evaluations of sampling bias due to volatilization (Barcelona et al., 1984, Schalla et al., 1988) have predicted little to no variation of volatile halocarbons in samples collected with different sampling devices. The samples used in these studies contained low concentrations of volatile organics, less than 100 ppb and the lifts required for sampling were shallow, ...