bench-scale laboratory testing Articles

  • Large-Scale Laboratory Permeability Testing of a Compacted Clay Soil

    Constant-head permeability (hydraulic conductivity) tests were performed on samples of a compacted clay soil using a 0.914 by 0.914 by 0.457-m (3 by 3 by 1.5-ft) large-scale, double-ring, rigid-wall permeameter. A naturally occurring silty clay soil was used for the permeability tests. The soil was separated into five different fractions representing five different ranges in precompaction clod ...


    By ASTM International

  • Laboratory test report - the effect of scale formation on heat transfer coils

    Background EVAPCO, Inc. recently introduced new Evaporative Condensers and Closed Circuit Coolers which utilize extended surface coils. For decades extended “fin” surfaces have been used on heat transfer coils, often referred to as “finned coils” primarily in an effort to increase dry capacity. However, in the past the fin material was limited to carbon steel tubes ...


    By Evapco Inc.

  • Laboratory scale tests of coal-based hydrogen production with CO2 capture in the aspect of clean coal technologies

    In the light of continuously increasing oil prices as well as stronger environmental regulations, an important issue becomes finding an alternative to fossil fuels. Scientists agree that hydrogen seems to be an ideal, price-competitive and environment-friendly future energy carrier. One of the most effective methods of hydrogen production is the process of steam gasification of coal to ...


    By Inderscience Publishers

  • Laboratory Califier Test to Predict and Optimize Full Scale Chemically Enhanced Primary Treatment (CEPT) Process

    INTRODUCTIONThe overall objective of this research was to develop a laboratory clarifier test to predict fullscale primary clarifier performance. This test was developed by simulating surface overflow rate (SOR) and flocculation time, which are the limiting parameters for primary clarification. This study describes the development of a procedure to predict full-scale NSS (Non-Settleable Solids) ...

  • HF Pure Water’s Treatability Study (Bench-testing) Service

    HF Pure Water, a division of HF Group, Inc., based in California, USA, offers, among its water treatment product-line, various AOP (Advanced Oxidation Process) application processes to treat customer-specific water and wastewater streams. As an integral and critical part of this technology offering, we are pleased to offer our bench-scale Treatability Study service for a small fee. Such a study ...


    By HF Pure Water

  • The Five Factors of Smart Laboratory Success

    The Five Factors Research organizations are under pressure to cut costs while maintaining or increasing throughput. To improve their operations, many laboratories are considering investments in data management or support and automation systems like ELNs, LIMS or Robotics/HTS. Whatever the change that is introduced, there are many pitfalls on the way to delivery, roll-out and ...

  • TopAir`s Laminar Bench

    TopAir is the flagship brand of Statitech Ltd., a leading manufacturer of cleanroom products since 1999. One of TopAir’s premier product lines includes the laminar bench. The laminar bench is a combination stainless steel worktop that provides a smooth, clean surface and an overhead airflow/filter system that removes unacceptable particles from the air before they reach the work area. ...


    By TopAir Systems

  • Laboratory validation of an ozone device for recreational water treatment

    Obtaining an accurate assessment of a treatment system's antimicrobial efficacy in recreational water is difficult given the large scale and high flow rates of the water systems. A laboratory test system was designed to mimic the water conditions and potential microbial contaminants found in swimming pools. This system was utilized to evaluate the performance of an in situ ozone ...


    By IWA Publishing

  • Case study - SP Fire Laboratory, Sweden

    Fire laboratory at SP Borås uses EnviBat’s Wet Electrostatic Precipitator technology (WESP) since 2007. Extremely low emissions and high availability are key advantages. Project: WetESP for Fire Laboratory Many fire tests are made in full scale. Example for fire tests can be engine rooms, vehicles, store houses, compartments etc. Most of the tests will include ...


    By Envibat AB

  • Recycling of defatted Carica papaya seeds biosorbent (DPS) waste containing Pb and Cd in clay bricks: laboratory scale experiment

    This study investigated the potential of recycling defatted Carica papaya seeds biosorbent (DPS) waste with adsorbed Pb and Cd in clay bricks. Physico–chemical, microscopic and technological properties were performed on raw materials and fired probes incorporated with 0 wt.% to 15 wt.% DPS made by dry compression technique, dried and fired at 700°C, 800°C and 900°C. Leaching ...


    By Inderscience Publishers

  • On Large-Scale Model Testing of Laterally Loaded Drilled Shafts in Sand

    An extensive large-scale laboratory model testing program was developed to assess the behavior of drilled shafts under lateral and moment loading. Because of the large scale of the testing, little information was available in the literature on sand deposit and test preparation or on test conduct and monitoring. In this paper, guidance is presented on these preparation and testing issues, and ...


    By ASTM International

  • Fabrication of Silty Sand Specimens for Large- and Small-Scale Tests

    In the course of research concerning the relation of cone penetration results and liquefaction resistance, it was necessary to develop a reliable method for preparation of silty sand specimens for laboratory triaxial testing (3.6 by 7.1 cm in diameter) and for a large-scale calibration chamber (1.5 by 1.5 m in diameter). The objective was to simulate the in situ soil fabric and to allow for ...


    By ASTM International

  • Design, Construction, and Testing of a Large-Scale, Radial Fracture Flow Model

    Materials and procedures used in previous laboratory studies of flow in fractures were reviewed. Based on this review, a 3-m-high by 1.5-m-diameter cylindrical radial flow model with a single horizontal fracture was designed and constructed out of concrete. The fracture was created by placing a sheet of geotextile between the top and bottom halves of the cylinder during pouring of the concrete. ...


    By ASTM International

  • Effects of C/N ratio on nitrous oxide production from nitrification in a laboratory-scale biological aerated filter reactor

    Emission of nitrous oxide (N2O) during biological wastewater treatment is of growing concern. This paper reports findings of the effects of carbon/nitrogen (C/N) ratio on N2O production rates in a laboratory-scale biological aerated filter (BAF) reactor, focusing on the biofilm during nitrification. Polymerase chain reaction–denaturing gradient gel electrophoresis (PCR-DGGE) and ...


    By IWA Publishing

  • Beyond Laboratory Research on White Rust and Passivation

    EVAPCO initiated an in-depth study to investigate the formation and control of white rust. This study, which began over three years ago, led to the development of industry-leading research equipment specifically designed to evaluate white rust formation on evaporative heat transfer surfaces. A small-scale closed circuit cooler was designed and built to replicate the dynamic conditions ...


    By Evapco Inc.

  • Laboratory-scale anaerobic sequencing batch reactor for treatment of stillage from fruit distillation

    This work describes batch anaerobic digestion tests carried out on stillages, the residue of the distillation process on fruit, in order to contribute to the setting of design parameters for a planned plant. The experimental apparatus was characterized by three reactors, each with a useful volume of 5 L. The different phases of the work carried out were: determining the basic components of the ...


    By IWA Publishing

  • Applying solubilization treatment to reverse clogging in laboratory-scale vertical flow constructed wetlands

    Substrate clogging is characterized as a frequently occurring operational problem for subsurface-flow constructed wetlands. The application of solubilization treatment to reduce clogging was tested in lab-scaled setups to provide a promising solution. The performance of solubilization treatment on reducing clogging and the related effects on plants and biofilms in the wetland system were ...


    By IWA Publishing

  • Laboratory-scale membrane up-concentration and co-anaerobic digestion for energy recovery from sewage and kitchen waste

    This study assessed an alternative concept for co-treatment of sewage and organic kitchen waste in Vietnam. The goal was to apply direct membrane filtration for sewage treatment to generate a permeate that is suitable for discharge. The obtained chemical oxygen demand (COD) concentrations in the permeate of ultrafiltration tests were indeed under the limit value (50 mg/L) of the local ...


    By IWA Publishing

  • Nutrient removal from activated sludge mixed liquor by wastewater protozoa in a laboratory scale batch reactor

    The aim of the study was to investigate the nutrient removal rate of three wastewater protozoan isolates. The study was carried out in a laboratory-scale batch reactor for a period of 120 h. in a four batch study. Aliquot samples were withdrawn from the reactor every 24 h. for the analysis of phosphate, nitrate, nitrite, ...

  • US EPA airmOzone TESTS

    The US EPA leads Photochemical Assessment Monitoring Stations programs (PAMS) for more than 15 years and many equipments used at PAMS sites are old and need to be replaced. That is why US EPA has conducted a material review of fully automatic GC units able to by analyze the 56 VOC ozone precursors of the PAMS list. They planned to perform an evaluation in two steps : - Laboratory evaluation of ...


    By Chromatotec Group

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