BT Technology for the Control of Methane Emissions from Permafrost and Natural Gas Hydrates

摘要: Climate change resulting from increased greenhouse gas emissions, particularly that of carbon dioxide, methane, and nitrous oxide, is major concern as far future global welfare concerned. Although dioxide emissions have dominated political discussions, methane release both natural hydrates permafrost in polar, arctic, regions because methane’s markedly greater temperature forcing potential than dioxide. Methane thawing are a direct consequence arctic increase, while will result enhanced possible byproduct during the exploitation hydrate reserves. some sedimentary submarine occurs ebullition, most released under conditions moderate hydrostatic pressure initially be dissolved state distributed over huge areas massive volumes fresh marine waters. High reaction rate aerobic oxidation (methanotrophy) has been well known microbially mediated process for more 100 years, but control sources concerned has, with exception remediation coal mine atmospheres, ignored. In addition to oxidation, anoxic by methanogenic microorganisms presence either sulfate or nitrate, also widely reported, without data. As elimination aquatic systems concerned, it likely methanotrophic consortia harnessed technological processes. The promising membrane-attached biofilm reactors employing process-mediating biota. Such can comprise based on tubular flat membranes, enclosure, encircling buoyancy chambers, such they submerged, drawn through water bodies framework rigid guides steel ropes, achieve appropriate liquid velocities pre-established biofilms. However, further development systems, respect problems sloughing necessary before technical-scale operation.