acid gas Articles

  • Controlling acid gas mists

    Gas cleaning New and strict pollution regulations in metallurgical plants worldwide are restricting particulate and acid gas emissions to extremely low levels. Because of that, sulphuric acid plants are being installed to remove and utilise S02 in gases resulting from the roasting of sulphide ores, smelting of ores, and burning or regeneration of spent acid or acid sludge from ...


    By Beltran Technologies, Inc.

  • Do You Need a Microfiltration or Ultrafiltration Membrane System for Your Plant?

    Determining whether or not an industrial plant needs a microfiltration (MF) and/or ultrafiltration (UF) membrane system isn’t always as straightforward as it seems. While these systems are not essential for every industrial process, when thoughtfully implemented within an intake, process, or waste stream, they can go a long way in improving a facility’s efficiency and/or cutting ...


    By SAMCO Technologies, Inc.

  • Sustainable Biorefineries: An Important Research Topic

    In recent years, substantial steps into the transition towards a biobased economy have been taken in order to reduce the reliance on imported oil and the emission of greenhouse gases.  As far as Europe is concerned, Sweden, home to theEUBCE 2017 in Stockholm, has been very successful in decoupling GHG emissions from economic growth: from 2000 to 2012, ...

  • City Of North Bay Uses Condition Assessment On Critical Force Main To Implement Asset Management Plan

    On one hand, it may seem like a waste of capital dollars if you perform a pipeline condition assessment and the final analysis turns up no leaks. Alternatively, you can also look at the no-leak report as a good news validation story, especially when using the information to help establish an asset management ...


    By Pure Technologies

  • A Faster and Better FluidScan with Version 5

    Measure water contamination in turbine oils down to 300 ppm The latest version of FluidScan software can detect total water presence as low as 300 ppm in turbine oils.  The method provides an alternative to laboratory tests such as Karl Fischer titration when fast, simple, and reagent-free analysis is needed. In addition to measuring water contamination, the FluidScan ...


    By Spectro Scientific

  • Acid mine drainage treatment

    Acid mine/rock drainage is a rampant problem in the world today. The above photo depicts acid drainage at an abandoned mine in the Yukon Territory of northwest Canada. This mine shares a similar history to thousands of other mines throughout the world. It was in operation for six short years in the 1950’s, producing gold ore. Its profitability eventually failed and it was abandoned. In the ...


    By WesTech Engineering, Inc.

  • Environmental Effects of Acid Rain

    Air Pollution Creates Acid Rain Scientists have discovered that air pollution from the burning of fossil fuels is the major cause of acid rain. Acidic deposition, or acid rain as it is commonly known, occurs when emissions of sulfur dioxide (SO2) and oxides of nitrogen (NOx) react in the atmosphere with water, oxygen, and oxidants to form various acidic compounds. This mixture forms a mild ...

  • Amerada Hess - acid flow back

    Client: Amerada Hess Triton - UK CETCO Oilfield Services successfully treated contaminated water returns on the Amerada Hess Triton FPSO. The fluids were treated during well clean-up operations and have reduced the potential for overboard oil discharges and production upsets at the offshore installation approximately 120 miles east of Aberdeen. Contaminated water returns are a common problem for ...


    By CETCO Energy Services

  • Peroxy-acid treatment of selected PAHs in sediments

    In an attempt to address some of the disadvantages of the common biotic and abiotic processes used for the degradation of Polycyclic Aromatic Hydrocarbons (PAHs), an alternative strategy utilising a primary chemical oxidative step to be combined with a biological post-treatment step was created. The degradation of α-methylnaphthalene, fluorene, phenanthrene, anthracene, pyrene and ...


    By Inderscience Publishers

  • Detection of alachlor and its sulfonic acid metabolite in water

    MATRIX: Groundwater, surface water and well water ANALYTES: Alachlor and its major soil metabolite, ethane sulfonic acid (ESA) LIMIT OF DETECTION: Alachlor: 5 ppt to 500 ppt (for 10 mL sample) 0.5 ppt to 50 ppt (for 100 mL sample) ESA: 30 ppt to 3 ppb (for 10 mL sample) 3 ppt to 300 ppt (for 100 mL sample) ...


  • Rehabilitation of Hydrogen Grooving in Sulfuric Acid Line

    Around October 2001, one of the major petrochemical refineries located on the Texas Louisiana Gulf coast needed to rehabilitate 6' and 8” diameter “fresh acid” (98% sulfuric acid) lines. Such lines tend to suffer from internal gouging due to formation of hydrogen gas in voids, which are caused by turbulence at directional changes in the pipe flow such as elbows, etc. This is a natural event, ...


    By InduMar Products, Inc.

  • Understanding the atmospheric measurement and behavior of perfluorooctanoic acid

    The recently reported quantification of the atmospheric sampling artifact for perfluorooctanoic acid (PFOA) was applied to existing gas and particle concentration measurements. Specifically, gas phase concentrations were increased by a factor of 3.5 and particle‐bound concentrations by a factor of 0.1. The correlation constants in two particle–gas partition coefficient (KQA) estimation equations ...


    By John Wiley & Sons, Ltd.

  • Development of headspace–gas chromatography–flame ionization detection procedure to determine volatile fatty acids in zoo organic waste leachates

    In order to determine volatile fatty acids (short chain monocarboxylic acids with 2 to 6 carbon atoms in a molecule) in leachates formed in organic waste piles a procedure based on static headspace (HS) coupled with gas chromatography (GC) have been proposed and optimized. The conditions of HS extraction and sample introduction into a gas chromatograph as well as of chromatographic separation ...


    By IWA Publishing

  • Repair, retrofit, and rebuild services for amine treating acid gas process - Case Study

    Catalytic Products International (CPI) was recently engaged by a Western Colorado Gas Processing Facility to review the existing amine treating acid gas process and the air pollution control equipment installed in an effort to help optimize the units and make improvements to the reliability of the entire system. Introduction: Identify root cause of numerous failures and create an ...

  • Adsorptive removal of methylene blue by CuO-acid modified sepiolite as effective adsorbent and its regeneration with high-temperature gas stream

    In this study, the dynamic adsorption of methylene blue dye onto CuO-acid modified sepiolite was investigated. Meanwhile, the equilibrium and kinetic data of the adsorption process were studied to understand the adsorption mechanism. Furthermore, a high-temperature gas stream was applied to regenerate the adsorbent. The results showed that the Langmuir isotherm model was applied to describe ...


    By IWA Publishing

  • Least-Cost Approaches to Reducing Acid Emissions

    ' The costs of meeting sulfur emission targets can be high. It is essential, therefore, that countries adopt policies which (a) minimize the net economic and social costs of reducing emissions to the agreed target levels, and (b) maximize the overlap between measures designed to reduce acidifying emissions and those addressing other forms of air pollution. This note discusses alternative ...


    By The World Bank

  • Kimre Mist Eliminators in Sulfuric Acid Plants

    B-GON® Mist Eliminators are widely used in the gas cleaning and contact section of sulfuric acid plants. Metallurgical, Oleum Producing, Sulfur Burning, and Regeneration Plants rely on the mist eliminators in the drying towers, absorption towers, and many other units to protect the quality of the product acid, protect downstream equipment from corrosion, protect the catalysts, and ultimately ...


    By Kimre, Inc.

  • Adwest Technologies flameless retox rto oxidizers with acid gas scrubbers for cost effective voc & odor abatement

    Adwest Technologies, Inc. provides cost effective Flameless Regenerative Thermal Oxidizers (RTO) with acid gas scrubber systems for cost effective VOC and odor abatement from malodorous VOC processes including food processing, rendering, petfood, biopharma spray dryer, bakery oven, composites, foundry, biogas, sludge dryers and waste water treatment plants (WWTP) off gas applications.  ...

  • SULFURIC ACID PLANT TAIL GAS CLEANUP WITH CANSOLV“ SYSTEM SO2 SCRUBBING TECHNOLOGY

    The tail gas from a single absorption sulfuric acid plant typically contains 2000-3000 ppmv of unreacted SO2. Emission regulations for new plants in most jurisdictions today require cleanup of this stream prior to discharge into the atmosphere and many grandfathered units are being required to decrease emission levels. The current paradigm is to add a second stage of conversion, which reduces the ...

  • Case study - Purified terephthalic acid plant

    Overview A major chemical manufacturer required a pollution control system to destroy the halogenated volatile organic compounds (VOCs) emitted during the formulation of Pure Terephthalic Acid (PTA). During the production process, methyl bromide is converted to hydrogen bromide. The pollution control system had to be designed to withstand the corrosiveness of the hydrogen bromide and ...

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