air analysis Articles

  • Ambient Air Sampling Methods

    Pollutants are nothing but any substance that may present in an atmosphere in such a concentration that it may harmful to surrounding, living organism or human being. Sampling and analysis of air pollutants is known as Air quality monitoring and it is major part of environmental monitoring. There are many advanced types of ambient air Sampling methods. we will learn here only which are most ...


    By Perfect Pollucon Services

  • XRF cement analysis | Spectroscopy Solutions

    Cement is a primary building material in the modern world; as a major constituent of buildings, concrete structures and roads the consistency of its composition during production is essential. ...


    By Specac Limited

  • A study on the exergetic analysis of continuous textile dryers

    This study deals with the exergetic analyses of the continuous textile dryers consisting of a stenter and a conveyor belt dryer. The exergy destructions in each of the components of the overall system are determined for average values of experimentally measured parameters. Exergy efficiencies of the system components are calculated to assess their performance. The effects of varying exhaust air ...


    By Inderscience Publishers

  • Expanding Reservoir Air Filters

    In all vented tanks, the rise and fall of fluid levels is offset by a corresponding volume of incoming and outgoing air. Keeping the incoming replacement air clean is essential for contamination control and thus the reliability of hydraulic systems. While targeting the system's reliability, JLM Systems Limited has developed the OilMiser™ Reservoir Aspirator (ORA) kit. This product represents a ...


    By JLM Systems Ltd

  • Air Sparging - Technology Overview

    Air sparging involves injecting a gas (usually air/oxygen) under pressure into the saturated zone to volatilize groundwater contaminants and to promote biodegradation in saturated and unsaturated soils by increasing subsurface oxygen concentrations. Vola tilized vapors migrate into the vadose zone where they are extracted via vacuum, generally by a soil vapor extraction system. The term ...

  • A Breath of Fresh Air for Your

    As the full effect of the Federal Clean Air Act (CAA) Amendments continue to impact today’s industry, many companies will be required to install new or additional air pollution control equipment.  With over two decades of proven success, catalytic oxidation is a popular method for controlling volatile organic compound (VOC) emissions.During the past 25 years, industry has made progress in ...


    By The CMM Group, LLC

  • Evaluation of the effects of varying the water velocity at the entrance of the contact zone on the performance of a dissolved air flotation (DAF) unit using the image analysis method

    For a more efficient design of dissolved air flotation (DAF) units, it is important to deepen our knowledge of the role that each constituent part plays with regard to overall performance. The velocity control of the flocculated water at the entrance (Ve) of the contact zone of DAF units is important because the degree of agitation in this region may affect the size of the flocs and the ...


    By IWA Publishing

  • PM source apportionment analysis in the Venetian area

    A CALMET–CAMx system was implemented to investigate PM10 source apportionment in the urban area of Venice. The modelling system was run for two winter months on a domain covering most of the Veneto region with a 4 km resolution mesh and a 1 km nested grid over Venice and its mainland area, in order to distinguish the local emission contributions from the regional ones. A brute–force method was ...


    By Inderscience Publishers

  • EDXRF Analysis of Sulfur and Other Elements in Oil

    The concentrations of sulfur substances in fuel oil, which greatly contribute to air pollution and acid rain, are regulated by law in many countries, and these regulations are becoming stricter with the growing concern about their impact on the environment and the consequences for society. Here, using the easy-to-operate EDX-720 energy dispersive X-ray fluorescence spectrometer, we determined the ...

  • A numerical analysis of the aspiration efficiency of a personal sampler

    The impact on sampling efficiency of increasing the flow rate of a low flow personal sampler has been examined. Increases in flow rates were required to obtain sufficient particle mass over the duration of a typical rush hour commute (3.5?16.7 litres/min). Computational Fluid Dynamics (CFD) modelling has been used to assess the implications of this higher flow on the aspiration efficiency of the ...


    By Inderscience Publishers

  • Evaluation and analysis of household hazardous substances in Kuwait

    Many of the products we use for housework, gardening, home improvement, or car maintenance contain hazardous materials that endanger our health as well as pollute the environment. Inappropriate use, storage, and disposal of hazardous household products can cause injuries, poisoning, and air pollution. The objectives of this paper were to determine the type and the quantity of hazardous materials ...


    By Inderscience Publishers

  • Accidental Releases Analysis for Toxic Aqueous Solutions

    As a result of the cluster rule for the control of the hazardous air pollutants, pulp and paper mills are in the process of further substituting chlorine with aqueous chlorine dioxide for their bleaching operations. In addition, ammonia aqueous solutions are applied by paper mills in various processes. An evaporation model including both heat and mass transfer for aqueous solutions has been ...

  • Accidental releases analysis for toxic aqueous solutions

    Abstract As a result of the cluster rule for the control of the hazardous air pollutants, pulp and paper mills are in the process of further substituting chlorine with aqueous chlorine dioxide for their bleaching operations. In addition, ammonia aqueous solutions are applied by paper mills in various processes. An evaporation model including both heat and mass transfer for aqueous ...


    By Trinity Consultants

  • Laboratory analysis demonstrates severity of Ogoniland pollution

    A two year study of the environmental impacts of oil contamination in Ogoniland was one of the most complex on the ground assessments ever undertaken by ALcontrol Laboratories. Conducted at the request of UNEP and the Federal Government of Nigeria, the work involved fieldwork and laboratory analysis.  ALcontrol Laboratories analysed over 4,000 air, soil and water samples collected from ...


    By ALcontrol Laboratories

  • Air quality in Europe — 2016 report

    This report presents an updated overview and analysis of air quality in Europe. It is focused in the state in 2015 and the development from 2004 to 2015. It reviews progress towards meeting the requirements of the air quality directives. An overview of the latest findings and estimates of the effects of air pollution on health and its impacts on ecosystems is also ...

  • An Environmental & Economic Analysis for Reducing Energy Subsidies

    This paper estimates the trend of total energy subsidies from year 2003 (that is 16.68 % of GDP) and running a model, predicts that energy subsidies will reach to 20% of GDP by 2019 if subsidies continue. Also environmental damage costs of energy consumption have been entered the model (Environmental Cost-Benefit Analysis Model: ECBA Model) in addition to the vast amounts of ...


    By University of Tehran

  • Numerical analysis of hydraulic jumps using OpenFOAM

    The present paper deals with a hydraulic jump study, characterization and numerical modeling. Hydraulic jumps constitute a common phenomenon in the hydraulics of open channels that increases the shear stress on streambeds, so promoting their erosion. A three-dimensional computational fluid dynamics model is proposed to analyze hydraulic jumps in horizontal smooth rectangular prismatic open-air ...


    By IWA Publishing

  • Feasibility analysis for biomass in cities, counties and facilities

    The commercial waste industry includes all those who collect waste from the simplest “collect waste and transport to a landfill” to the more complex “collect waste and process into re-usable components and energy.” This article will cover how we can collect material and fuel a clean energy system for our immediate future, while saving clean water and air. ...


    By Waste Advantage Magazine

  • Discrete or Continuous Flow Analysis – which is better?

    A wide variety of factors affect the choice of analytical instrument. These include target workload (samples/hour), variety of chemistries, methods required, bench space, staff availability etc. In the following article Lalicia Potter, Technical Sales & Support Director at SEAL Analytical, examines one of the common decisions facing laboratory managers. As the manufacturer of an ...


    By SEAL Analytical, Inc.

  • A quantitative approach to the traffic air quality problem: the traffic air quality index

    The Traffic Air Quality (TAQ) model is a simple tool to estimate traffic fine particulate emissions on roadways (g/km) and can be used for both real-time analysis and for localized conformity analysis (“hot-spot” analysis for nonattainment areas) as defined by 40 CFR 93.123. This paper is a follow-up to a study published earlier regarding the development of the TAQ model. This paper shows how ...

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