opacity Articles

  • Where Did These New Quality Assurance Requirements for Opacity Monitors Come From?

    U.S. EPA promulgated the long awaited ‘‘Quality Assurance Requirements for Continuous Opacity Monitoring Systems at Stationary Sources’’ used to demonstrate continuous compliance with opacity standards specified in new source performance standards (NSPS).  This has an effective date of November ...


    By All4 Inc.

  • Marine Industry experience with Aalborg Industries

    Port Authorities and Governing Bodies state that a ship cannot emit smoke of >20% opacity for more than 3 minutes when in port. The IMO set similar limits for on-board incinerators. The DSL-220 Opacity Monitor has been used successfully to measure smoke emissions from diesel engines, incinerators and boilers on board ship ensuring that environmental concerns are ...


    By DynOptic Systems Ltd

  • Utilisation of pulverised coal fly-ash as filler and rice straw as fibrous raw material for manufacturing of special grade paper

    This innovative research study is based on utilisation of two solid waste materials, pulverised coal fly-ash and rice straw for manufacturing of laminate base paper. Fly-ash can prove to be a very good filler for laminate grade coloured base papers and other specialty papers where very high opacity is sought but whiteness is not important. The paper samples with 22% filler have opacity of 99.6% ...


    By Inderscience Publishers

  • Environmental impact of using biodiesel as fuel in transportation: a review

    The environmental pollution and global warming associated with the use of fossil fuels, has forced a search for alternative fuels in transportation. This paper presents a review of the use of biodiesel in CI engines and its environmental impacts. There is a significant reduction in the emission of unburned hydrocarbons, polyaromatic hydrocarbons and soot, particulate matters, carbon monoxide, ...


    By Inderscience Publishers

  • An analysis of extinction coefficients of particles and water moisture in the stack after flue gas desulfurization at a coal-fired power plant

    Two important factors that affect in-stack opacity—light extinction by emitted particles and that by water moisture after a flue gas desulfurization (FGD) unit—are investigated. The mass light extinction coefficients for particles and water moisture, kp and kw, respectively, were determined using the Lambert-Beer law of opacity with a nonlinear least-squares regression method. The ...

  • Chemical Plant Desulfurization

    KRONOS’ facility in Leverkusen, Germany produces titanium dioxide, the most important material used by the paints and plastics industry for whiteness and opacity. When new German guidelines set maximum emission limits for SO2 in 1989, KRONOS was required to eliminate the COS from the off-gas at their titanium dioxide production facility to meet the new requirements.Complicating this application, ...


    By Merichem Company

  • Performance and emission characteristics of CI engine, fuelled with diesel and oxygenated fuel blends

    Vegetable oils are a potential alternative towards partial or total substitution of diesel fuels. In this study, we used ethanol as the solvent, and a bio fuel enhancer as additive to explore the possible use of higher percentages of biodiesel in an unmodified diesel engine. Biodiesel was produced from cashew nut shell liquid (CNSL) by pyrolysis process. A mixture containing 80% (by volume) of ...


    By Inderscience Publishers

  • Multi-pollutant control creates fuel options for whiskey distillery

    The distillation of fine whiskey requires the application of appropriate amounts of heat in the form of steam. The generation of that steam can come from multiple sources of energy. The Wild Turkey Distillery located in Lawrenceburg, KY has utilized an EISENMANN Wet Electrostatic Precipitator Dual Field (WESP- 2F) to provide multi-pollutant air pollution control on the plants new biomass fired ...


    By Eisenmann

  • Assessment of bagging operators exposure to with pvc airborne particulates

    The hazard potential of airborne particles is dependent on the mass concentration as well as the particle size. Particle size determines the deposition site within the respiratory tract and the subsequent health effects. Particle-size is considered from two viewpoints: The sizefraction most closely associated with the specific health effect, and the mass concentration within that size fraction. ...


    By University of Tehran

  • Design, manufacture and testing of a waste paper recycling system

    Egypt is facing a major crisis due to the 1997's 40% increase in the price of imported newsprint. This price increase not only affected the press and publishers, but also placed a burden on the educational system, because most of the government textbooks depend on this type of imported paper. This crisis can be solved entirely by recycling waste paper and depending on recycled paper instead of ...


    By Inderscience Publishers

  • Comparison of four methods to assess biofilm development

    Two nondestructive methods of biofilm quantification (optical density via a flatbed scanner and biofilm thickness) have been evaluated and compared to two destructive methods (Crystal Violet staining after biofilm disintegration and dry weight). The methods were tested on biofilms that developed on a modified rotating biological contactor (RBC) that was inoculated with urban wastewater and fed ...


    By IWA Publishing

  • Incineration Industry: Scrubber on Sludge Incinerator Reduces Atmospheric Emissions Case Study

    Aberdeen Sewage Treatment Plant in Aberdeen, Washington started up their new Electric Infrared Incinerator in May, 1981. The sewage sludge incinerator, product of Shirco, Inc., needed a pollution control device in order to meet state, local and federal requirements for atmospheric emissions, according to the emissions test on the unit performed January, 1982. Chosen was a Model 24×24- ...


    By CR Clean Air Group, LLC

  • Navigating NSPS subpart Db for boilers: a case study

    Over the past year, Trinity assisted a chemical company with the permitting and installation of a new 220 MMBtu/hr package boiler. The new natural gas-fired boiler replaces coal-fired units that were installed in the 1940s. Navigating through the numerous, and at times conflicting, regulatory requirements applicable to such a unit has been challenging. With careful planning and implementation, ...


    By Trinity Consultants

  • Triiodophenyl acrylate–based microbeads find important use in the medical field

    Preparation of polymeric micro– and nanoparticles has significantly become an effective approach for achieving efficient drug targeting to tumour tissues. A promising solution could be the use of a radio–opaque polymeric system carrying iodine groups. In this context, radio–opaque polymeric microparticles based on methyl methacrylate (MMA) and an 2,4,6–triiodophenyl acrylate (TIPA) were ...


    By Inderscience Publishers

  • Israel and the bomb

    In spite of its policy of ambiguity, Israel's nuclear military capability is universally admitted. This raises the question of the underlying doctrine and the function played by the bomb in the political-military relations between Israel and its neighbours since the end of the 1950s. This paper shows that instead of contributing to deterrence, the bomb has been irrelevant (at best) or ...


    By Inderscience Publishers

  • Compliance to standards in continuous emissions monitoring case study

    Customer: Glass Manufacturer Application: Continuous Emissions Monitoring Service (CEMS) for Glass Manufacturing Background: A glass factory is required to ...


    By Ecotech Pty Ltd

  • Additives for fuel economy: a modern view

    Fuel additives. A private car doesn’t just give you the pleasure of a quick and comfortable ride, but it also requires everyday expenses for maintenance, and the biggest expense is the cost of fuel. The question of saving on fuel is very relevant. The Internet offers many tips. One of the ways to save fuel is to use special additives. But experience shows that these additives have both ...


    By GlobeCore GmbH

  • Case study - Rubber curing emissions

    Overview A rubber curing company was looking for a new, affordable abatement solution to treat their blue haze and low-level Volatile Organic Compounds (VOCs) in order to meet regulatory requirements. The large Electrostatic Precipitator (ESP) in use was extremely expensive to operate and maintain. The company began their search for a system that offered effective opacity control and ...

  • The MACT for petroleum refinery FCCs is a fraud!

    This paper is a continuation of the author's research on the MACT regulation for abating pollution from Petroleum Refinery FCCs in the US. This paper highlights the flaws in the recently promulgated MACT for NSPS and non-NSPS FCC units. It details the inadequacies and the potential for perversity in the New Source Performance Standards (NSPS) that are an integral part of the FCC MACT. It ...


    By Inderscience Publishers

  • PrimasonicsTM Audiosonic Acoustic Cleaners Employ High Energy - Low Frequency Sound Waves in a Non-Intrusive, Highly Effective and Automatic Manner to Prevent Particulate Build Up and Maintaining Material Flow

    Operation: PrimasonicsTM Audiosonic Acoustic Cleaners comprise of a Wave Generator and differing Bell Sections. Compressed air enters the Wave Generator and forces the titanium diaphragm to vibrate thus creating a base tone. The varying bell sections amplify and convert this into a particular frequency depending on the application. Sound is best described as the passage of pressure fluctuations ...


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