process emissions Articles

  • Area monitoring of specific ppb-level constituents utilizing process gas chromatography

    ABSTRACT In most of the industrialized countries worldwide, increasingly stringent environmental regulations require the continuous reduction of a wide range of emission sources and components. Despite local variations concerning concentrations, absolute emission quantity, target priorities and timetables, regulations typically require active compliance and proof thereof. The impact of ...

  • What you need to know about mercury emissions monitoring

    Gasmet Technologies (Finland) has published a new White Paper on the monitoring of mercury emissions to air from industrial processes. The Paper provides an overview of current initiatives to reduce mercury emissions and explains how continuous mercury emissions monitoring can help inform process control and the efficient operation of pollution abatement equipment, whilst also demonstrating ...


    By Gasmet Technologies Oy

  • Insitu analysis of ammonia slip and water vapor using a tunable diode laser for SCR/SNCR optimization and boiler tube surveillance in power plants

    ABSTRACT Environmental Regulations driven by the 1990 Clean Air Act require Power Plants to reduce NOx emissions. SCR's and SNCR's reduce NOx emission by injecting ammonia into the combustion flue gas. which ideally reacts with the NOx to form H?0 and Nj. The efficiency of the SCR SNCR is determined by monitoring the outlet for excess NH3. referred to as NH3 slip. The flue gas sample ...

  • Controlling Pharmaceutical Coating & Drying Process Emissions

    Capturing and destroying harmful emissions from pharmaceutical processes can be challenging. It’s not because the volatile organic compounds (VOCs) are difficult to destroy using catalytic or thermal techniques. It’s because their concentrations can be so high. These process streams raise safety concerns, both when they’re collected in vents and when they reach the final ...

  • Thermodynamic efficiencies and GHG emissions of alternative desalination processes

    Three alternative approaches to desalinating seawater were evaluated with respect to their thermodynamic efficiencies and greenhouse-gas emissions. The technologies considered were multistage flash distillation (MSF), reverse osmosis (RO), and membrane distillation (MD). The analysis was based on published stream data from large-scale operational MSF and RO facilities and experimental-scale data ...


    By IWA Publishing

  • Case study - Destruction of inert process emissions

    Many chemical companies use batch reactors to make their products.  These reactors typically have vents which are opened and closed during emptying, filling, mixing, heating or cooling and other steps of the production process.  The gases coming from these vents must be controlled under most government regulations.  Generally speaking, the emissions produced are inert (little or no ...

  • Modeling Greenhouse Gas Emissions From Activated Sludge Processes

    Dynamic simulation of activated sludge process is a common tool for wastewater treatment design and optimization. Most activated sludge models predict only the uptake of BOD and nutrients, however, they can easily be supplemented with further information regarding greenhouse gas (GHG) production to predict the generation of components such as CO2. Many published anaerobic digestion models contain ...

  • Wastewater treatment process impact on energy savings and greenhouse gas emissions

    The objective of this research was to assess the energy consumption of wastewater treatment plants (WWTPs), to apply a mathematical model to evaluate their carbon footprint, and to propose energy saving strategies that can be implemented to reduce both energy consumption and greenhouse gas (GHG) emissions in Greece. The survey was focused on 10 WWTPs in Greece with a treatment capacity ranging ...


    By IWA Publishing

  • Emission Control Strategies and Technologies for the Chemical Processing Industry: An interview with Chris Anguil

    AC: Could you please provide our readers with a brief introduction to the industries that Anguil Environmental works within? CA: Our thermal and catalytic oxidizer systems are applied on any industrial process that is regulated for Volatile Organic Compounds (VOCs), Hazardous Air Pollutants (HAPs) or Nitrogen Oxides (NOX). Some of these industries include chemical ...

  • Nitrous oxide emissions from one-step partial nitritation/anammox processes

    Measurements of nitrous oxide were made at pilot- and full-scale plants to evaluate greenhouse gas emissions from one-step partial nitritation/anammox processes applied in moving bed biofilm reactors treating reject water. It was found that 0.51–1.29% and 0.35–1.33% of the total nitrogen loads in the pilot- and full-scale reactor, respectively, were emitted as nitrous oxide. Between 80 and 90% ...


    By IWA Publishing

  • Effect of carbon sources on nitrous oxide emission in a modified Ludzak Ettinger process

    Effect of methanol and glycerol on nitrous oxide (N2O) emission in two laboratory-scale modified Ludzak Ettinger (MLE) processes was investigated during three distinct periods: dissolved oxygen (DO) control by intermittent aeration with a DO controller, and high and low aeration rates. N2O consumption rate in an anoxic tank and aeration mode influenced N2O emission rates from ...


    By IWA Publishing

  • Separate determination of PM10 emission factors of road traffic for tailpipe emissions and emissions from abrasion and resuspension processes

    Little is known about the relevance of mechanically produced particles of road traffic from abrasion and resuspension processes in relation to the exhaust pipe particles. In this paper, emission factors of PM10 and PM1 for light and heavy-duty vehicles were derived for different representative traffic regimes from concentration differences of particles and nitrogen ...


    By Inderscience Publishers

  • Interpreting the IPCC emissions scenarios

    This paper discusses how two sets of emissions scenarios, generated using the Atmospheric Stabilization Framework, were used by the United Nations Intergovernmental Panel on Climate Change (IPCC). In particular, it discusses how the scenarios were specified, what roles models played in developing the scenarios, and how the scenarios were interpreted by participants in the IPCC process. It draws ...


    By Inderscience Publishers

  • Effective control of fugitive emissions

    Are you Building a brand new process and want to get through the permit process quickly? Looking for ways to further reduce emissions? Under an order from U.S. Environmental Protection Agency (EPA) to further reduce emissions? With EPA continually pressuring industry to reduce emissions, control of fugitives is increasingly important to your overall emissions ...

  • Making money by reducing emissions

    Efforts to reduce emissions are really about changing companies' behavior. Pressure on companies from various activist groups combined with daily headlines in national and international media are driving various agendas among federal, state and local regulators. The current financial crisis does not appear to have lessened this pressure, rather the opposite. Compliance is now a must; ...


    By VisionMonitor Software, LLC

  • Metal Coating Emission Control

    The use of regenerative thermal oxidizers is expanding into applications where they wouldn’t have been considered years ago, says Mike Scholz As the first generation of oxidizer systems in the industry nears the end of their service life, many canmaking plants face repair or replacement of their existing air pollution control systems. Like many others in the industry, a Silgan canmaking ...

  • Emissions reduction with Diesel blending

    Diesel technologies are develops by huge rates. Modification of cars with diesel engines make a half of the new cars sold in Europe. The black smoke, noisy engine operation and unpleasant smell remained far in the past. Today diesel engines present not only profitability, but also high capacity and worthy dynamic characteristics. Quality of fuel also is changed. The modern diesel blending has ...


    By GlobeCore GmbH

  • Tackling remediation emissions

    Organisations commissioning regeneration projects now have the option to substantially reduce the carbon emissions associated with any remediation project, while offsetting the remaining carbon impact of these works, says Joe Teer, operations director of QDS. QDS introduced a carbon neutral remediation (CNR) service earlier this year triggered at this particular time by the fact ...


  • N2O emission in short-cut simultaneous nitrification and denitrification process: dynamic emission characteristics and succession of ammonia-oxidizing bacteria

    A sequencing batch airlift reactor was used to investigate the characteristics of nitrous oxide (N2O) emission and the succession of an ammonia-oxidizing bacteria (AOB) community. The bioreactor could successfully switch from the complete simultaneous nitrification and denitrification (SND) process to the short-cut SND process by increasing the influent pH from 7.0–7.3 to 8.0–8.3. ...


    By IWA Publishing

  • Making money by reducing emissions

    Efforts to reduce emissions are really about changing companies’ behavior. Pressure on companies from various activist groups combined with daily headlines in national and international media are driving various agendas among federal, state and local regulators. The current financial crisis does not appear to have lessened this pressure, rather the opposite. Compliance is now a must; ...


    By VisionMonitor Software, LLC

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