Solvent Recovery Adsorber Articles

Solvent Recovery System Keeps Presses Rolling at World`s Largest Gravure Printing Plant

When QUAD/GRAPHICS Inc. entered the publication gravure printing market, it followed the axiom of Daniel Burnham, the 19th century architect and urban planner, to 'make no small plans.' In 1985, the Pewaukee, Wis.-based printing company purchased two 96-inch web, eight-color, high-speed presses and installed them at its new printing plant in Lomira, Wis., near Milwaukee. Conventional wisdom at ...

Jun. 1, 1995

By AMCEC Inc.

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 ...

Oct. 13, 2010

By GEO Inc

Assessment of Activated Carbon Stability toward Adsorbed Organics

Activated carbon technology is widely employed in solvent recovery and air pollution abatement systems. Activated carbon beds containing organic molecules sometimes come into contact with air or oxygen, in some ...

Jan. 1, 1992

By Calgon Carbon Corporation

Liberating contaminants for easy recovery

The number one challenge associated with most site remediation designs and methodologies is that 90-95 per cent of all environmental contaminants are present in an adsorbed phase onto soil and bedrock surfaces within both saturated and unsaturated zones. Contaminants, including hydrocarbons (LNAPL), chlorinates (DNAPL) and heavy metals, are sorbed onto the substrates and so have reduced mobility ...

Apr. 5, 2010

By Ivey International Inc.

A simple and fast micromethod for the analysis of polychlorinated biphenyls in air by sorbent enrichment and ultrasound-assisted solvent extraction

Abstract A combination of sorbent enrichment and ultrasound-assisted solvent extraction has been used to determine polychlorinated biphenyls in air. Analytes were sampled by pumping a known volume of air through a porous polymer (Tenax TA). The enriched adsorbent was transferred into a glass vial, and ultrasound-assisted extraction of the analytes was then performed in ...

Dec. 9, 2004

By Springer

Adsorption of the harmful hormone ethinyl estradiol inside hydrophobic cavities of CTA+ intercalated montmorillonite

Hydrophobic cavities produced by cetyltrimethylammonium cation (CTA+) exchanged and trapped in the interlayer space of montmorillonite were used to remove the harmful hormone contaminant ethinyl estradiol (EE2) from water. X-ray diffraction, thermogravimetry/derivative thermogravimetry, elemental analysis (carbon, hydrogen, nitrogen), Fourier transform infrared, scanning electron ...

May 31, 2016

By IWA Publishing

Recovering Valuable Chemicals from Air Emissions

Air emissions in many cases are a waste of valuable natural resources that should have become useful chemicals. In some cases the economic payback from recycling/reuse of air emissions can be almost as much a motivation to control air pollution as government regulations. Examples of recycling and reuse of air emissions are sulfur oxides emissions that can be made into sulfuric acid, cement ...

Nov. 10, 2005

Trace Analysis of PAHs using EPA methods 3541, 3545 and 8100

The Extraction System B-811 and the Syncore Analyst parallel concentrator from Buchi as well as the Pressurized Solvent Extractor from Applied Separations were evaluated for the pretreatment of samples containing PAHs. Recoveries of extraction and subsequent concentration using acetone-n-hexane (1+1) were 70-95% for 2 ring and 90-100% for less volatile 3-5 ring PAHs. A good precision (95% ...

Mar. 31, 2008

By BÜCHI Labortechnik AG

Fast analysis of semi-volatile organic compounds using PTV-GC–TOF MS

The evaluation of semi-volatile organic compounds (SVOCs) in environmental matrices poses many challenges for the analyst, not least the vast number that may be encountered in any given analysis. In addition, analyte reactivity and the potential for multiple analytes to co-elute makes achieving the required method detection limits (LODs or MDLs) quickly and cost-effectively a formidable task ...

Jul. 29, 2016

By SepSolve Analytical

Case study - Increasing oxidizer capacity by 80,000 SCFM

Overview A recreational products company bought a three year-old manufacturing facility with an existing regenerative thermal oxidizer (RTO) for the production of their outboard engine. They required emission control equipment to manage the volatile organic compounds (VOCs) emitted by the solvents used in the engine painting processes. The company wanted to minimize overall costs by using ...

Jan. 2, 2008

By Anguil Environmental Systems, Inc.

What is Activated Carbon?

Adsorption with activated carbon can apply. The more awareness people have of the Earth, the more applications activated carbons will have. is thus a commonly seen process in applications such as gas masks, space capsules, nuclear plants and so forth, in which the removal of gases is highly needed. ...

Jul. 9, 2015

By Cocarb

Soil Washing

Introduction: Soil washing is a water-based process for scrubbing soils ex situ to remove contaminants. The process removes contaminants from soils in one of two ways: By dissolving or suspending them in the wash solution (which can be sustained by chemical manipulation of pH for a period of time). By concentrating them into a smaller volume of soil through particle size ...

Oct. 1, 1997

By Federal Remediation Technologies Roundtable

Regenerative Thermal Oxidizers…What You Should Know.

Within industry today, the use of an Air Pollution Control System (APCS) to control harmful air pollutants is not new. In response to Congressional guidelines passed in the 1970’s, a number of companies with VOC emissions have been operating air pollution control systems of one type or another for 25 years or more. These guidelines have been revised and added to as the years ...

Nov. 9, 2005

By The CMM Group, LLC

Case study - RTOs leave nothing to HAP-penstance

PROBLEM The United States EPA promulgated a ruling in 40 CFR, imposing strict new standards to reduce emissions of toxic air pollutants from the manufacture of pharmaceutical products, including prescription and over-the-counter drugs. The agency's rule was intended to reduce emissions of a number of air toxins and hazardous air pollutants (HAPs), including methylene chloride, ...

Jan. 2, 2008

By Anguil Environmental Systems, Inc.

American Upstart Filter Brand Competing with the Majors

Flexotherm® has expanded its product line in the highly competitive filtration market. The company now offers 2,900 different filter elements including coalescers, particulate, adsorbers, general purpose and high temperature filters. ...

May 10, 2010

By Neptech Inc.

Compost Markets Grow With Environmental Applications

The use of compost in various environmental applications is one of the most intensive areas of compost research being pursued today. The high organic matter content and biological activity of compost makes it effective for use in a variety of applications. Five of these will be reviewed in this article: erosion control, revegetation, biofiltration, bioremediation, and wetlands construction. ...

Jan. 1, 1999

By BioCycle Magazine

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