solvent collection Articles

  • Recycling Solvents in Histology Department of Hospitals

    Industrial rotary evaporator: eco-friendly and cost-saving Solvents (ethanol, xylene and water) are used in histology for dewatering and destaining during the preparation of tissue sections. Here we show how these solvents are recycled in an automated process using an industrial rotary evaporator. We offer safe and efficient industrial distillation by intuitive ...


    By BÜCHI Labortechnik AG

  • Chlorinated solvents: methylene chloride and TCE

    Introduction This paper presents the results of a scaled and phased approach to source remediation of high concentrations of recalcitrant chlorinated solvent compounds via soil vapor extraction (SVE) and vapor treatment at a Site in Southern California. Phase I began with refrigerated condensation (C3) in order to achieve high mass removal rates to reduce lifecycle costs and time ...


    By GEO Inc

  • Bioaugmentation to Treat Chlorinated Solvents in Fractured Bedrock

    ABSTRACT: An in situ bioremediation pilot study was performed at a former industrial site in New Jersey where groundwater has been impacted by historical releases of chlorinated solvents. The target area for treatment is a fractured, intermediate bedrock zone. The remedial objective at the Site is to treat the groundwater while minimizing the impact of the remedial system on the re-development of ...


    By EOS Remediation, LLC

  • Principles and practices of enhanced anaerobic bioremediation of chlorinated solvents

    PROBLEM STATEMENTThe Department of Defense (DoD) has identified hundreds of sites where groundwater is contaminated with chlorinated solvents; these represent one of the DoD’s largest remediation liabilities. In addition to their use in many industrial processes, chlorinated solvents have historically been used for cleaning and degreasing such diverse products as aircraft engines, automobile ...


    By RNAS Remediation Products

  • Reduction in Solvents for Cleaning: Amcor Packaging (Australia)

    Background Amcor Cartons, a manufacturer of folding cartons and paperboard packaging is a 13 million dollar operation employing 60 staff. In keeping with Amcor Cartons’s commitment to respond to customer needs through the application of the highest technology, advantage was taken of the latest available technology when deciding to upgrade their printing press. After installing a new ...


  • Solvent choices for infrared testing of oil and grease in water

    Water is a very strong absorber in the mi d infrared (I R) regio n where o il is measured. We see the effect of infrared absorbance when a cold bucket of water left in the sun is quite warm by afternoon due to the absorption of infrared energy as heat. When measuring part per million (ppm) oil levels with mid IR, the water absorbs so much of the infrared energy that the signal becomes saturated ...


    By Spectro Scientific

  • Solvent extraction and characterisation of rubber seed oil

    Rubber seeds are an abundant source of non-edible oil that is available in Malaysia. Nonetheless, the seeds remain underutilised although oil produced has the potential to be used in a number of applications. For this industry to be developed, a reliable study is required to establish oil extraction parameters and oil properties. Rubber seeds were collected and characterised in order to study ...


    By Inderscience Publishers

  • Passively Enhanced In-Situ Biodegradation of Chlorinated Solvents

    Harding Lawson Associates (HLA) conducted a field demonstration to evaluate in situ enhanced anaerobic biodegradation of chlorinated solvents using Hydrogen Release Compound (HRC). The technology is designed to enhance the natural biodegradation process for a more rapid and complete degradation of the organic contaminants to non-toxic compounds (e.g., ethylene). This paper presents the results ...


    By REGENESIS

  • Solvent Recovery in Flexographic Printing: Fildes Pty Ltd

     Background Fildes Pty Ltd is a long established, family owned company, located in Sandringham, Victoria. Fildes manufacture quality labels, bags and retail packaging. The company currently supplies 90 per cent of the Australian pharmacy market, as well as packaging for a wide range of high profile retailers. The Process As part of the ...


  • Reduction of Solvent Use in Cleaning of Printing Screens: Cutler Brands

     The installation of new cleaning equipment at Cutler Brands printing works in Adelaide, South Australia, has resulted in a 40 percent reduction in cleaning solvent used and an annual saving of almost $165,000. Not only was the investment of $45,000 recouped in 4 months through savings and increased productivity, but exposure of employees to hazardous fumes and chemicals substantially ...


  • Technical protocol for evaluating natural attenuation of chlorinated solvents in ground water

    The U.S. Environmental Protection Agency is charged by Congress with protecting the Nation’s land, air, and water resources. Under a mandate of national environmental laws, the Agency strives to formulate and implement actions leading to a compatible balance between human activities and the ability of natural systems to support and nurture life. To meet these mandates, EPA’s research ...


    By RNAS Remediation Products

  • Determination of chlorophenols in sediment using ultrasonic solvent extraction followed by solid-phase extraction, derivatization, and GC-MS analysis

    A method for determination of chlorophenols (CPs) in sediments was developed using ultrasonic solvent extraction followed by solid-phase extraction, derivatization, and gas chromatography–mass spectrometry (GC-MS) analysis. Some effective operational details and parameters on mixing of samples and extraction solvent, adsorption loss, and extraction cycles of the derivatives were studied and ...


    By IWA Publishing

  • Food Processing: Tower Scrubber Reduces Pollutants Recovering Reusable Solvents Case Study

    FMC adapted a ‘good neighbor’ policy when it installed a specialized, countercurrent packed tower scrubber into its seaweed extraction process system. The tower recovers isopropyl alcohol from the company’s process, thereby reducing pollutant emissions at the Rockland, Maine facility. The unit rids of the need for additional pollution control instrumentation and eliminates ...


    By CR Clean Air Group, LLC

  • Troubleshooting injection volume variation in the Concurrent Solvent Recondensation – Large Volume Sample Injection Technique

    I’ve started receiving a number of questions about the large volume injection technique called Concurrent Solvent Recondensation – Large Volume Sample Injection. Most recently, a question came through the Tech Service group about injection volume variation. I had encountered a similar problem when working on the 50 µL injection for the combined 1,4-Dioxane and Nitrosamines ...


    By Restek Corporation

  • Indirectly suspended droplet microextraction of water‐miscible organic solvents by salting‐out effect for the determination of polycyclic aromatic hydrocarbons

    A simple and low cost method “indirectly suspended droplet microextraction of water‐miscible organic solvents (ISDME)” by salting‐out effect prior to high performance liquid chromatography and UV detection (HPLC‐UV) was used for the determination of polycyclic aromatic hydrocarbons (PAHs) in different samples. ISDME is a combination of salting‐out extraction of water‐miscible organic solvent ...


    By John Wiley & Sons, Ltd.

  • Multiyear Temporal Changes in Chlorinated Solvent Concentrations at 23 Monitored Natural Attenuation Sites

    Introduction There is an increasing interest in predicting how long it will take natural attenuation processes to remediate groundwater plumes. The U.S Environmental Protection Agency (USEPA) Monitored Natural Attenuation (MNA) Directive (USEPA 1999) specifies that MNA relies on “ . . . a variety of physical, chemical, or biological processes that, under favorable conditions, act without human ...


  • Measurement of selected polychlorinated biphenyls (PCBs) in water via ultrasound assisted emulsification–microextraction (USAEME) using low-density organic solvents

    Despite bans and restrictions for their adverse health effects including endocrine disruption, due to their stability in the environment, polychlorinated biphenyls (PCBs) are still of concern for their residues in several matrices. This study employed low-density ultrasound-assisted emulsification–microextraction (USAEME) to measure selected PCBs (28, 52, 101, 118, 138, 153, and 180) in water ...


    By IWA Publishing

  • Progress Soil Sampling Results Collected from Phase 1 at SRSNE Superfund Site in Southington, Connecticut

    TerraTherm has recently completed its final progress soil sampling effort of Phase 1 at the Solvents Recovery Service of New England, Inc. (SRSNE) Superfund site in Southington, Connecticut. The site's total target treatment zone covers an area of approximately 74,195 square feet and an approximate volume of 47,298 cubic yards; with Phase 1 and Phase 2 each comprising approximately half the ...


    By TerraTherm, Inc.

  • Analysis of Automotive Polymers - Case Study

    The above criteria are important to the professional scientist or laboratory chemist. Introduction Polymers are present in daily life. From the wrappings around the food we eat to the sacks used for the garbage, polymers are practically everywhere. The automobile is no exception. Polymers comprise greater than 40% of a modern automobile; the carpet, seats, padding, knobs, ...


    By Specac Limited

  • Waste Water Elimination: Parr Paints

    Parr Paints solved its waste water problem by optimising cleaning processes and reusing the collected wash water in the next batch of product. The purchase cost ($800) of an off the shelf high pressure wash unit was more than offset by the $3000 pa savings in waste disposal and improved labour efficiency. Background Parr Paints Pty Ltd (Parr Paints) is a small family owned ...


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