halocarbon Articles

  • Biodegradation of methane and halocarbons in simulated landfill biocover systems containing compost materials

    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 ...

  • Safe Recycling of Municipal Sludge by Gamma Radiation

    Abstract Municipal sludge contains many toxic organic materials, large number of pathogenic microorganisms, heavy metals alongside many nutrients beneficial to plant and/or animal growth, but its use is limited due to these health hazards contaminants. The technology of irradiation-pasteurization has been shown to quickly, efficiently and reliably deal with potential health hazards ...


  • The 2008 Critical Review -- Prospects for future climate change and the reasons for early action

    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 warming of approximately 0.1–0.2 °C per decade that has resulted is very likely the primary cause of the increasing loss of snow cover and Arctic sea ice, of ...

  • Biotreatment of Odors from the Zimpro Sludge Conditioning Process

    Management of odor emissions generated during thermal sludge conditioning is a well known disadvantage of the “Zimpro” process. 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 ...


    By PRD Tech, Inc.

  • Carbon Offsets

    In the 21st century, achieving 100% carbon neutrality can be a daunting task. Simple activities such as watching television, sending an email message, cooking and making a phone call all produce carbon emissions. Carbon offsets offer an alternative to reducing emissions by enabling individuals and businesses to compensate for their carbon emissions by purchasing credits which offset their ...


    By BSC Sustainability Services

  • How to reverse the causes of ozone layer destruction

    Since the causes of ozone layer depletion were identified, solutions were put into place to reduce or eliminate their usage. The U.S. Clean Air Act and the Montreal Protocols address the problem internationally. The goal of these treaties is to stop the damage to the ozone layer by phasing out known contributors.Although there are numerous causes of ozone layer depletion, chloroflurocarbons have ...


    By Verisae

  • Late lessons from early warnings: science, precaution, innovation

    With much scientific uncertainty about the real impact of new products and technologies, policy-makers face difficult decisions, particularly when they have to deal with powerful commercial interests and economic trade-offs. The back stories of some widely used innovations of the past, such as leaded petrol, mercury products, DBCP pesticide, vinyl chloride, DDT, tobacco, and fossil fuel energies ...

  • Tackling waste in the sands of the Sahara

    When gas was discovered in the mid Sahara areas of North Africa in the 1990s Andy Ive was asked by BP to help set up the water and waste infrastructure for what amounted to four small towns 600 km into the desert. No local infrastructure at all existed for the waste and water to be produced by 2-3000 workers. IVE overcame sandstorms, extreme heat, poisonous snakes and patented a novel solution to ...


    By Ive Design

  • Controlling Odors from Waste Water Treatment Plants

    INTRODUCTION In recent years, there is growing public awareness of odors from waste water treatment plants, which mainly stems from the following observed trends: The public is less tolerant of objectionable odors from waste water treatment plants; Many waste water treatment plants have seen residential, commercial, or other developments established near the facility ...


    By PRD Tech, Inc.

  • Pilot-Scale Biofilter Test for Treating Zimpro Odors

    The thermal sludge conditioning process of U.S. Filter/Zimpro Corporation, Rothschild, Wisconsin (Zimpro process) is primarily used to improve dewatering characteristics of the waste sludge. The process entails a partial breakdown through oxidation and hydrolysis of complex, high molecular weight organic compounds, such as, proteins, fibers, carbohydrates, and fats. The partial breakdown of ...


    By PRD Tech, Inc.

  • Annual European Union greenhouse gas inventory 1990–2013 and inventory report 2015 - Submission to the UNFCCC Secretariat

    ES.1 Background information on greenhouse gas inventories and climate change The European Union (EU), as a party to the United Nations Framework Convention on Climate Change (UNFCCC), reports annually on greenhouse gas (GHG) inventories for the years 1990 to t-2 for emissions and removals within the area covered by its Member States (i.e. domestic emissions taking place within its ...

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