Sulfur Dioxide (SO2) Articles

  • Control of Mercury Emissions from Coal-fired Electric Utility Boilers

    During combustion, the mercury (Hg) in coal is volatilized and converted to elemental mercury (Hg°) vapor in the high temperature regions of coal-fired boilers. As the flue gas is cooled, a series of complex reactions begin to convert Hg° to ionic mercury (Hg2T) compounds and/or Hg compounds (Hgp) that are in a solid-phase at flue gas cleaning temperatures or Hg that is adsorbed onto the ...

  • Texas Environmentalists Plan Lawsuit Against Valero For Pollution

    Three Texas environmental groups notified Valero Energy Corp. on May 22 of plans to file a lawsuit under the U.S. Clean Air Act for pollution at the company’s Port Arthur, Texas, refinery, the organizations said. Environment Texas, the Sierra Club and the Port Arthur Community Action Network allege over 600 violations of pollution limits by the release of hazardous chemicals ...


    By Hart Energy

  • Titanium Dioxide Wastewater

    Titanium Dioxide Wastewater A large amount of waste acid is produced in the production of titanium dioxide, a large amount of high-salt wastewater is generated in the post-treatment process, and some titanium dioxide is still lost after the CN filter. On the one hand, the titanium white industry suffers from increasingly strict Environmental constraints, on the other hand, waste acid, water, and ...


    By Jiangsu Jiuwu Hi-tech Co

  • Choosing flow monitors for CEMS applications

    As a result of the 1990 Clean Air Act Amendments1, electric power plants must reduce their emissions of sulfur dioxide and nitrous oxides—the primary causes of acid rain. The U.S. Environmental Protection Agency (EPA), in its proposed rules2, designates the 111 Phase I fossil-fueled plants ^roughly 268 boiler units) that must have continuous emissions monitoring systems (CEMS) installed, ...


    By Sierra Instruments, Inc.

  • Beyond Karl Fischer: Titration Methods

    Almost every industry is concerned about water concentration levels in some way. Food and pharmaceuticals automatically come to mind, but fuel, explosives, agri-chem, and polymer processing businesses (to name a few) all rely on moisture content as a critical quality attribute. Karl Fischer titration (KFT) is the best-known technique for determining water levels in samples, and it is supported ...


    By Spectro Scientific

  • Axetris EMIRS200 black body IR Source built into MERTIS thermal infrared spectrometer - Case study

    Infrared Source aboard BepiColombo to explore Mercury The BepiColombo Mission is a joint project between the European Space Agency (ESA) and Japan Aerospace Exploration Agency (JAXA). Axetris Infrared Sources are being used in the MIR spectrometer MERTIS that is on board the Mercury orbiter and was developed by German Aerospace Center (DLR) and University of Muenster. ...


    By Axetris AG

  • Built into the MERTIS IR Spectrometer as part of ESA’s BepiColombo Mission - Case study

    Axetris Infrared Sources ready for take-off to Mercury The BepiColombo Mission is being jointly planned between the European Space Agency (ESA) and Japan Aerospace Exploration Agency (JAXA). Axetris Infrared Sources are being used in the mid-IR spectrometer MERTIS that will be on-board the Mercury Orbiter The BepiColombo Mission Mercury is the smallest and ...


    By Axetris AG

  • Fence-line Monitoring: Benzene and Beyond

    Measurements of ambient air quality close to industrial facilities are sometimes referred to as fence-line monitoring, in particular if the ambition is to evaluate the facilities’ contributions to the air pollution situation. ...


    By Opsis AB

  • Gas Concentration Monitoring in Sulfuric acid production

    Sulfuric acid (H2SO4) is a central substance in the chemical industry. Principal uses include mineral processing, fertilizer manufacturing, oil refining, wastewater ...


    By Opsis AB

  • Monitoring of Hydrogen Sulfide in Industrial Processes

    Hydrogen sulfide, H2S, is a very poisonous, corrosive, and flammable gas. As such, it needs to be carefully monitored and controlled in industrial processes where it is generated or used. At relatively low concentrations, it has an odour of rotten eggs which effectively works as a warning, but at higher concentrations where it becomes acutely toxic and even lethal, it can no longer be smelled ...


    By Opsis AB

  • Seawater Desalination to Supply Flue Gas Desulfurization System - Case study

    Desalinated water supply helps plant meet strict environmental regulations ...


    By Fluence Corporation

  • Tips for Refinery Gas Analysis

    Refinery gas analysis (RGA) is an important application in oil and gas which characterizes the gases produced during crude oil refining, including stack emission, flame and reformate streams. The challenge in RGA analysis is the reliable analysis of variable sources and compositions of gases produced via fluid catalytic cracking (FCC). The analysis must be quick and accurate to allow engineers to ...

  • The Pueblo Viejo Gold Mine - THIOTEQ for Copper Recovery - Case Study

    Increasing output of metals by precipitating copper sulfide in the gold mining industry. Facts and figures Process The Pueblo Viejo Mine processes 24,000 tons per day of polymetal ores containing gold, silver, copper and zinc. Full operation was achieved in 2014. Revitalizing resources Recovering up to 12,000 tons of copper ...


    By Paques Technology B.V.

  • Marine Monitoring of Emissions of Air Pollutants

    Many of us who are not in the marine shipping business probably think of vessels as practical means of transportation, or, when it comes to cruising ships, a place to spend your vacation. However, not all of us realize that large ships also are floating large power plants, with all aspects that come with power plants including potential contribution to air pollution. ...


    By Opsis AB

  • Hydroxyl Radical Eliminates H2S in Wet Scrubbers & Flue Gases Part 2 - Case Study

    This is part 2 of a series of posts on the same topic, read Part 1 to get an introduction and overview ...


    By Jenfitch, LLC

  • Hydroxyl Radical Eliminates H2S in Wet Scrubbers & Flue Gases

    In a recent study in Houston, TX, H2S was removed from a natural gas stream containing 2,000 mg/l of H2S and 5% CO2 using JC 9450 ROS. JC 9450 ROS is a new mineral oxychloride compound that generates Reactive Oxygen Species (ROS) like hydroxyl radical ions and others in a highly soluble form that is easy to use. The study, which simulated operating conditions of a wet scrubber, found that the ...


    By Jenfitch, LLC

  • Why Air Quality Specialists Should Measure for Sulfur Dioxide (SO2) in Homes & Offices - Case study

    What is Sulfur Dioxide? (SO2) Sulfur Dioxide (SO2) is a highly reactive gas that is part of a larger group of sulfur oxides or SOx gases. According to the U.S. Environmental Protection Agency, the largest sources of SO2 emissions are due to “fossil fuel combustion at power plants (73%) and other industrial facilities ...

  • Reducing NOx in Diesel Emissions | Spectroscopy Solutions

    Air pollution and NOx emissions from diesel engines are a global concern due to their potential impacts on human health. Researchers worldwide are developing new and improved methods to reduce NOx emissions. Infrared spectroscopy in the gas phase, which is made possible using FTIR gas cells from Specac, has an important role to play in this ...


    By Specac Limited

  • Quick and easy distillation & determination of total SO2 in foods and beverages

    Sulfur-containing compounds, such as sulfur dioxide and sulfites, are widely used as preservatives and anti-oxidants in foods and beverages. Exposure to high levels of sulfites can cause an allergic reaction, difficulty breathing, sneezing, throat swelling, hives and migraine headaches. Given the health risks associated with sulfite exposure, the amount of sulfites in beverages and foodstuffs is ...


    By BÜCHI Labortechnik AG

  • Ecology and performance of aerobic granular sludge treating high-saline municipal wastewater

    The successful development of aerobic granular sludge (AGS) for secondary wastewater treatment has been linked to a dedicated anaerobic feeding phase, which enables key microbes such as poly-phosphate-accumulating organisms (PAOs) and glycogen-accumulating organisms to gain a competitive advantage over floc-forming organisms. The application of AGS to treat high-saline sewage and its ...


    By IWA Publishing

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