acid air treatment Articles

  • Catalytic wet oxidation of ferulic acid

    Catalytic Wet Oxidation (CWO) of aqueous ferulic acid (a lignin model compound) was carried out under mild conditions (100?150?C, ~300 kPa PO2). Significant removal of ferulic acid (in terms of Total Organic Carbon (TOC)) (81% at 100?C and 95% at 150?C after 2 hr) was obtained using a CuNiCe/Al2O3 catalyst. A considerable portion of this TOC was removed during the heat-up period prior to oxygen ...


    By Inderscience Publishers

  • Treatment and Disposal of Air Pollution Control Residue

    What is APCr? Thermal waste management using Energy Recovery Facilities (ERFs) is now a well-managed and mature technology that is subject to environmental monitoring by a range of competent international bodies. These ERFs have been established as a means of diverting waste away from landfill disposal and for valorising the material and energy content of the waste. Counter to historic ...

  • A Case Study For Thermal Treatment Of Fluorinated Hydrocarbon With 15% Wt Hydrofluoric Acid Recovery

    This paper is a joint presentation by 3M Specialty Materials and Selas-Linde to describe the thermal treatment technology used to safely destroy Fluorinated Hydrocarbon components generated as a result of fluorination of organic compounds. Thermal treatment of these components results in high concentration of Hydrogen fluoride in the combustion chamber requiring special attention to handling and ...

  • Acid Mine Drain (AMD) treatment to achieve very low residual heavy metal concentrations

    Abstract Mount Emmons mine wastewater treatment plant currently treats on average around 450,000 gallons per day of acid mine drain (AMD) water collected into several collection ponds. The plant uses standard lime hydroxide precipitation process at pH 10.7 to precipitate heavy metals and remove AMD contaminants with the subsequent flocculation - dissolved air flotation (DAF) and sand ...

  • Common Treatment Technologies for Halogenated VOCs in Air Emissions/ Off-Gases

    Three technologies that are most commonly used to treat halogenated VOCs in air emissions/off-gases are carbon adsorption, catalytic oxidation, and thermal oxidation. Carbon adsorption is a remediation technology in which pollutants are removed from air by physical adsorption onto the carbon grain. Carbon is 'activated' for this purpose by processing the carbon to create porous particles with a ...

  • Fulvic acid degradation using nanoparticle TiO2 in a submerged membrane photocatalysis reactor

    The degradation of fulvic acid (FA) by nanoparticle TiO2 in a submerged membrane photocatalysis (SMPC) reactor was studied. In this reactor, photocatalytic oxidation and membrane separation co-occured. The continuous air supplier provided O2 for the photocatalytical reaction and mixed the solution through an airflow controller. The particle TiO2 could automatically settle due to gravity without ...


    By IOS Press

  • Synergism of GUP and Boric Acid Characterized by Cone Calorimetry and Thermogravimetry

    Wood is treated with a new composite flame retardant, whose components guanyl urea phosphate (GUP) and boric acid (BA) impart flame retardance. The flame retarding behavior of these samples is measured by cone calorimeter. The thermal behavior of samples has been studied by differential thermogravimetry (DTG) and thermogravimetry (TG) in air. The activation energies for different stages of ...


    By SAGE Publications

  • Innovative wet electrostatic precipitators assure competitive edge in acid marketplace

    The unsteady global economic recovery continues to subject many core industries to persistent volatility in profits, prices, markets and capital investments. However, some analysts remain optimistic about the global international trade in sulfur in all forms, particularly sulfuric acid. This versatile mineral acid is both the world’s most widely used chemical, and the one with the highest ...


    By Beltran Technologies, Inc.

  • Wastewater-Primary Treatment

    Primary Treatment is defined as a wastewater treatment process that takes place in a rectangular or circular tank and allows those substances in wastewater that readily settle or float to be separated from the water being treated. This process achieves solids separation. The solids readily available to settle to achieve sedimentation will do so in a settling tank referred as a clarifier. On the ...

  • Nitrification processes in scrubbing liquid of an exhaust air treatment system of a large-scale pig housing facility

    The use of multi-staged exhaust air treatment systems is an effective method of substantially reducing the emission of ammonia, dust particles and odorous substances. Wet filter walls are able to absorb large amounts of ammonia when scrubbing fluid containing sulphuric acid is used. In addition, due to their large surface areas and the permanent supply of oxygen and nutrients, wet filter walls ...


    By IWA Publishing

  • Rendering Facility Wastewater Treatment

    Food Processing Wastewater Treatment Case Studies Animal & Grease Rendering Plant Wastewater Treatment Net savings of $21,400/month or $256,800 Annually ...


    By Integrated Engineers Inc.

  • Egg plant treatment in Belgium

    DESCRIPTION OF WASTEWATER TREATMENT FACILITY Between 3 and 4 million eggs are broken daily, 5 days a week, to produce egg-white, egg-yolk, and some mixed egg products for a total of 900 - 1000 tons of end-products per week. All is done under the highest hygienic standards. The wastewater treatment plant was built 10 years ago, when the egg breaking capacity was at 1.5 million eggs per day and ...


    By BluePlanet Labs

  • Mining, the environment and the treatment of mine effluents

    The environmental impact of mining on the ecosystem, including land, water and air, has become an unavoidable reality. Guidelines and regulations have been promulgated to protect the environment throughout mining activities from start-up to site decommissioning, in particular, the occurrence of acid mine drainage (AMD), due to oxidation of sulfide mineral wastes, has become the major area of ...


    By Inderscience Publishers

  • Case study - Chlorinated groundwater treatment

    Overview A Fortune 50 company implemented a remedial project to collect and treat polluted groundwater from a site in Central New York, preventing the mitigation of impacted groundwater from flowing into local waterways. An engineering and construction firm was hired to design and build an effective, efficient groundwater treatment system. Collection of the polluted water would be ...

  • Case study - Chlorinated groundwater treatment

    Problem A Fortune 50 company implemented a remedial project to collect and treat polluted groundwater from a site in Central New York, preventing the mitigation of impacted groundwater from flowing into local waterways. An engineering and construction firm was hired to design and build an effective, efficient groundwater treatment system. Collection of the polluted water would be done ...

  • From Wastewater Treatment to Sweet Pineapples

    In wastewater treatment, ammonia that is removed from sewage used to be discharged directly to the atmosphere. Nowadays, studies have identified that ammonia emissions are of major concern to air quality. This has led to a new way of thinking. Sulzer offers modern closed-air-loop systems for wastewater treatment that transform ammonia into a common soil fertilizer. This reuse of a waste product ...


    By Sulzer

  • Improved winter treatment performance at last

    ' Flow rates are higher due to increased biological efficiency,' said the engineer Problem This eastern USA chemical plant produces polyester resins and wastewater containing terephthalic acid and ethylene glycol. Like many wastewater treatment facilities, this plant has had its share of treatment challenges. 'Our waste is rapidly oxidized and tends toward filamentous growth,' said the ...

  • 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 ...

  • To Automate Where no Plant has Automated Before: Acid Washing of Packed-Tower Chemical Scrubbers

    ABSTRACTThe Orange County Sanitation District (Sanitation District), under a capital improvement project, developed an automated procedure to perform acid washing on packed tower chemical scrubbers. Packed-tower chemical scrubbers operate with an alkaline solution, composed of sodium hydroxide, an oxidant, and make-up water. The make-up water may be chlorinated secondary treated wastewater or ...

  • 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.  ...


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