Particulate Monitoring Articles

  • Uncoated and coated ZnO nanoparticles life cycle in synthetic seawater

    The increasing production of nanoparticles has raised strong concerns regarding their environmental release. In nanoparticles life cycle scenarios, marine systems constitute one of the main final compartments, and nanoparticles fate in these environments needs to be assessed. Here, dissolution kinetics of commercial uncoated and organic‐coated ZnO nanoparticles in synthetic seawater has been ...


    By John Wiley & Sons, Ltd.

  • Monitoring and Treatment of Selected Nanoparticles

    With their increasing use, nanoparticles will become concentrated in urban effluents in the future. Both adequate monitoring methods and water treatment technologies will be necessary to assess and avoid consumer exposure. This paper reports results in these two challenging areas for both organic and inorganic nanoparticles. Treatment experiments indicate that lamellar settling is better adapted ...


    By IWA Publishing

  • Winter time particulate matter concentrations at an urban roadway in India

    This paper presents analysis and interpretation of 1-hr average fine (PM 1 and PM 2.5 ) and coarse (PM 10 ) particulate matter (PM) concentrations measured during winter 2008 and 2009 at a roadside in Chennai city, India. Results showed typical weekly and diurnal cycles with high concentrations corresponding morning and evening peak traffic flows. The 24-hr average PM ...


    By Inderscience Publishers

  • Photoelectrocatalytic study and scaling up of titanium dioxide electrodes for wastewater treatment

    Different TiO2 photoelectrodes have been characterized and tested for the photoelectrocatalytic oxidation of methanol. Particulate electrodes (TiO2/Ti and TiO2/ITO) have been shown to notably favour charge-carrier transfer at the electrolyte interface while a thermal electrode (Ti) has been shown to favour charge-carrier separation when applying an electric potential bias ...


    By IWA Publishing

  • Distribution of pyrethroid insecticides in secondary wastewater effluent

    Although the freely dissolved form of hydrophobic organic chemicals may best predict aquatic toxicity, differentiating between dissolved and particle bound forms is challenging at environmentally relevant concentrations for compounds with low toxicity thresholds such as pyrethroid insecticides. We investigated the distribution of pyrethroids among three forms: freely dissolved, complexed with ...


    By John Wiley & Sons, Ltd.

  • Particle shape factors and their use in image analysis - part 1

    Fine panicles are often characterized by their particle size and distribution as determined by various analytical instruments. Particle shape may be just as important as particle size. Particle shape, however, is often ignored or disregarded. Image analysis is a technique capable of measuring particle shape factors and providing valuable information. These shape factors may dictate the behavior ...


    By Particle Technology Labs

  • The cheaper, safer and faster way to remove Asbestos is coming to the Netherlands

    When you think about asbestos removal, you may initially envision the experts dressed in full white suits, ready to take on the challenge of removing it safely. But when a company is in need of asbestos removal, the first thing they may think of is the heavy cost associated or length of time. Handling this issue is never a walk in the park for any company. However, cost and time burdens are about ...

  • The Master of Hydrant Flow Test Equipment

    Our range of hydrant flow test equipment offers many benefits that provide data that you can rely on. Here are 10 reasons why. 1. Record ...

  • Hurricane HR System to Reduce Particulate Matter from a Biomass Boiler Burning Pellets Under 50mg/Nm3 - Case Study

    Foreword Advanced Cyclone Systems, S.A. (ACS) designed and supplied a Hurricane Cyclone System for Norbidel, a Portuguese boiler manufacturer. End customer for boiler and Hurricane is Fepsa, a company that focuses its production on felts for hats. Its underlying processes involve compression and vibration, under the action of water and heat. Norbidel, based in Maia (Porto, Portugal) ...

  • PM2.5 Air Quality Modeling Updates

    There has been much activity over the past six (6) months that will impact how air quality modeling analyses will be conducted for Prevention of Significant Deterioration (PSD) permit applications with respect to particulate matter less than 2.5 microns (PM2.5).  As the resident air quality modeling expert at ALL4, I thought it ...


    By All4 Inc.

  • Cleanroom Monitoring and Alarming Using a DAQ and Control System

    CAS DataLoggers recently provided the datalogging solution for a Cleanroom Monitoring and Alarming application in a major hospital which needed a data acquisition and control system to record extensive cleanroom measurement data including pressure, temperature, air humidity and particle counts at various measuring points. Users also needed the system to control the cleanroom alarm horns and ...


    By CAS DATALOGGERS

  • Environmental fate of three novel brominated flame retardants in aquatic mesocosms

    Currently, little is known about the environmental fate and persistence of novel brominated flame retardants (NBFRs). The recent detection of NBFRs in sediment cores and air samples provides insight into their persistence and potential for transport. Limited numbers of laboratory studies have examined the fate and behavior of these compounds, but field‐based fate studies have been especially ...


    By John Wiley & Sons, Ltd.

  • Fate of SiC and TiC nanoparticle dispersions in human reconstituted gastric fluid

    In this work, we explore the evolution of the physicochemical properties of silicon carbide and titanium carbide nanoparticles in human reconstituted gastric fluid in the conditions of a normal digestion. The nanoparticles were pre–dispersed in water or in a pluronic F108 solution. Key parameters as the particle size distribution and the surface composition of the nanoparticles were monitored. ...


    By Inderscience Publishers

  • Small scale particulate matter measurements and dispersion modelling in the inner city of Liège, Belgium

    In the framework of the Interreg–IV 'PM–Lab' project a local–scale exercise was set up to evaluate air pollution in terms of particulate matter (PM) within the centre of Liège, Belgium (pop. 190,000). Sixteen sites distributed on a boulevard and its side streets were selected to determine the spatio–temporal variation of PM concentration in this traffic–dominated area. In addition to the in situ ...


    By Inderscience Publishers

  • Enhancing source apportionment with receptor models to foster the air quality directive implementation

    Receptor models (RMs) identify pollution sources by solving a mass balance equation using measured chemical composition of samples either in combination with known source profiles or not. This approach has been extensively used in North America and South–Eastern Asia mainly on particulate matter (PM). Also, in Europe RMs found wide acceptance and contributed to the identification of sources in ...


    By Inderscience Publishers

  • Sensitivity of ozone and aerosols to precursor emissions in Europe

    We modelled the air quality in Europe during January and June 2006 using the MM5/CAMx model system and studied the sensitivity of ozone and aerosol formation to precursor emissions. Increased isoprene emissions by a factor of four in summer caused an increase in afternoon ozone by up to 10%. On the other hand, the effect on secondary organic aerosols (SOA) was very small. Reductions in ...


    By Inderscience Publishers

  • Assessment of rainwater harvesting systems at a university in Taipei

    Rainwater harvesting systems (RWHSs), a pilot-scale one (PSR) and a full-scale one (FSR), at a university campus in Taipei were assessed. Characteristics of harvested rainwater were analyzed, including pH, electrical conductivity (EC), turbidity, alkalinity, dissolved organic carbon (DOC), total coliform (TC), concentration of 14 metals (Al, Ca, K, Mg, Na, Cu, Fe, Mn, V, Zn, Cd, Cr, Pb and Ni) ...


    By IWA Publishing

  • Microscopic Particulate Analysis

    Introduction In 1989 the EPA promulgated the Surface Water Treatment Rule (SWTR) in response to the 1986 Amendments to the Safe Drinking Water Act (SDWA). The overall goal of the SWTR is to protect consumers from pathogens. The SWTR recommends a multiple-barrier approach including source water protection, filtration and disinfection when surface water is used as source water for drinking. ...


    By Analytical Services, Inc

  • Large eddy simulation modelling of the dispersion of radioactive particulate matter

    Field experiments with a Radioactive Dispersion Device (RDD) were performed by the National Radiation Protection Institute (NRPI) of the Czech Republic. We present the results of computer simulations of these experiments using a new microscale model, Charles University Large Eddy Microscale Model (CLMM). The model was first validated using wind tunnel data for the dispersion of continuous passive ...


    By Inderscience Publishers

  • Particulate matter pollution simulations in complex terrain

    The preliminary results of a simulation of the air quality in a region of Northern Italy are presented. The simulation was performed using a modelling system based on a meteorological model, an interface code and a transport–chemistry model. Comparisons with measured data are presented and discussed. Keywords: PM pollution, air quality, transport–chemistry modelling, dispersion ...


    By Inderscience Publishers

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