optical separation Articles

  • Optical Polishing

    A mid-western firm who manufactures a large amount of specialty eyeglass lens was having a problem removing lead from their wastewater stream. This stream was a combination of the grinding effluent waster and the wash stream containing cleaning compounds. The normal effluent stream had a pH of 11- 11.5. The sample was treated without pH adjustment with the addition of Floccin-HP. The dosage was ...


    By Integrated Engineers Inc.

  • Optical equipment manufacturer

    Overview: Multi plant implementation using EPOCH’s Chemical Management module to track detailed chemical usage. EPOCH is interfaced to company's ERP system for electronic input of chemical transactions. One data feed provides all information necessary for generating SARA 312 Tier report, 313 Form R, and VOC and HAP emissions for Title V reporting. EPOCH VOC and HAP emission reports show rolling ...


    By Logical Data Solutions, Inc.

  • Long optical paths of large aperture

    THE measurement of the vapor phase spectra of compounds having high boiling points presents an experimental problem that may be solved either by heating the absorption cells or by making them very long. In the infra-red region radiation from the hot gases in heated cells decreases the accuracy of absorption measurements. If only a small amount of sample is available, the only possibility is to ...


    By CIC Photonics, Inc.

  • Depth and material sensitivity in magneto–optic nanostructures

    Magneto–optic (MO) methods are used for characterisation of magnetic ultrathin lms and nanostructures. The paper deals with the sensitivity of the complex MO effect to lms at different depths and to different materials in periodic multilayers and self assembled nanostructures. It is shown, that the basic principle and separation methods are the same for depth sensitive selectivity and the ...


    By Inderscience Publishers

  • Erbium–doped nanoparticles in silica–based optical fibres

    Developing of new rare–earth (RE)–doped optical fibres for power amplifiers and lasers requires continuous improvements in the fibre spectroscopic properties (like shape and width of the gain curve, optical quantum efficiency, resistance to spectral hole burning and photodarkening...). Silica glass as a host material for fibres has proved to be very attractive. However, some potential ...


    By Inderscience Publishers

  • A novel optical panel photobioreactor for cultivation of microalgae

    In this study, a novel optical panel photobioreactor (OPPBR) equipped with a V-cut/or flat optical panel (OP) and a light source, i.e., light-emitting diodes (LEDs) was developed. The performance of this OPPBR was assessed using cultures of Chlorella vulgaris. Growth rates of biomass were compared in bioreactors operated separately using a V-cut OP, or a flat-plate OP both equipped with LEDs ...


    By IWA Publishing

  • Measurement of hydrocarbons in produced water using fiber optic sensor technology

    Due to the non-availability of Freon, there is need for an alternative method to measure the concentration of hydrocarbons in the effluent from oil water separators in use in the oil industry today. Current methods use solvent extraction and IR analysis of water samples. In this paper we present an alternative method, which does not use any solvents and can provide in-situ analysis of the ...


    By PetroSense, Inc

  • Oil-In-Water Analysis. Verification of Particle Counter results by optical microscopy

    For my research work, which concerns separation of liquid/liquid dispersions, I selected the Spectrex PC2200. It covers the whole range of droplet sizes which are of interest, i.e. from 0.5 to 100 microns. The procedure for analysis is very simple and results are obtained in less than a minute. This makes the Spectrex instrument very handy for use in the lab as well as for field measurements (A ...


    By Spectrex Corporation

  • Redwave - separation of transparent and white HDPE

    REDWAVE - sensor based sorting machines - optimise the separation of recyclable plastic materials: Upon customer request the separation of transparent and white HDPE bottles has been realized for the first time in a sorting plant. It is a challenging task as hardly any difference can be detected in the colour spectrum between transparent and white bottles. In ...

  • HPLC separation and detection of bisphenol a (BPA) in plastics

    The BPA or bisphenol A (Figure 1) has become well know over the past year as concerns for its effect on human health and well being have been raised. The concerns over BPA began with baby bottles and spread to include other types of bottles. BPA is used in the production of two very common polymers PVC and Polycarbonate. PVC, Polyvinyl chloride, is used in many different products including ...


    By PerkinElmer, Inc.

  • Altpapier Sortierung Dachau Gmbh – Germany - Sensor based optical sorting for paper de-inking case study

    Customer ASD - Altpapier Sortierung Dachau GmbH - are specialists in recycling of waste paper. The company produces high quality paper grades for their industry partners. Requirements The requirements are maximised gain output with the highest purities of 97% of sorted paper grades from waste paper with less than 8% de-inking loss overall. ...

  • Measurement of Hydrocarbons in Produced Water Using Fiber Optic Sensor Technology (An Alternative to Freon Extraction and IR Analysis Methods)

    Due to the non-availability of Freon, there is need for an alternative method to measure the concentration of hydrocarbons in the effluent from oil water separators in use in the oil industry today. Current methods use solvent extraction and IR analysis of water samples. In this paper we present an alternative method, which does not use any solvents and can provide in-situ analysis of the ...


    By PetroSense, Inc

  • The IMPROVE_A Temperature Protocol for Thermal/Optical Carbon Analysis: Maintaining Consistency with a Long-Term Database

    Thermally derived carbon fractions including organic carbon (OC) and elemental carbon (EC) have been reported for the U.S. Interagency Monitoring of PROtected Visual Environments (IMPROVE) network since 1987 and have been found useful in source apportionment studies and to evaluate quartz-fiber filter adsorption of organic vapors. The IMPROVE_A temperature protocol defines temperature plateaus ...

  • Identification of near infrared (NIR) optical sorting good practice in the UK and mainland Europe case study

    Challenge: Previous studies have shown that standards of quality and yield achieved by NIR optical sorting facilities, such as Materials Recovery Facilities (MRFs), vary enormously across Europe To study and share examples of good practice in order to improve recovery rates and quality of materials from NIR sorting facilities Axion ...

  • Searching for storm water inflows in foul sewers using fibre-optic distributed temperature sensing

    A major drawback of separate sewer systems is the occurrence of illicit connections: unintended sewer cross-connections that connect foul water outlets from residential or industrial premises to the storm water system and/or storm water outlets to the foul sewer system. The amount of unwanted storm water in foul sewer systems can be significant, resulting in a number of detrimental effects on ...


    By IWA Publishing

  • A Comparison Between Systems for Source Separation of Organic Household Waste

    Conventional collection of source separated waste using separate containers was com-pared to collection in bags with different colours and optical sorting (OptiBag). Purity was found to be high, especially in the OptiBag system. However the conventional system had new instructions for sorting, which may have influenced the result. Sources for heavy metals are identified as waste metal fraction, ...


  • Ecopark 4, Spain, trusts AUTOSORT for the efficient automation of its separation processes - Case Study

    Ecopark 4 in Hostalets de Pierola (Barcelona), part of the infrastructure of the Barcelona Metropolitan Area (AMB), uses ten of TOMRA Sorting Recycling's AUTOSORT optical separators, which currently recover 90% of sortable material. This fully automated plant has three treatment streams which process around 300,000 tons annually. Ecopark 4, located in Hostalets de Pierola (Barcelona), is a ...


    By TOMRA Sorting (TITECH)

  • Sorting plant for light packaging material, location: Italia

    Task Automation of an existing manual sorting press line for production of marketable potential recyclables out of the mix of light packagings. Solution Automatical treatment of the light packagings  by auger fillers, ballistic separators, ferrous and non-ferrous and air separators as well as optical identification discharging all troubling materials at the ...


  • Sorting plant for paper

    Task New conception of a complete sorting plant for used paper from a collection with an averaged proportion of cardboard about 35 % to max.  45 %. Separation of the paper-cardboard mix  into the fractions paperboard, deinking and  mixed paper for the further recycling Solution The material input is divided on two lines by  a feeding conveyor ...


  • Nano-nanocomposites: an emerging class of materials

    We review some of our recent results on nano-nanocomposites (NNC), which may be defined as a random, bi-phasic nanodispersion, i.e., where the characteristic size of both phases present is in nanometers. This is a subset of the larger family of nanocomposites, which commonly consist of one phase nanodispersed in an extended matrix phase. Such systems afford the possibility of tuning their ...


    By Inderscience Publishers

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