Vapor Phase Carbon Adsorption Articles on Environmental XPRT

Capturing Organic Vapors from Non-Condensable Gases Using Activated Carbon Adsorption Technology

There are many established uses of vapor phase carbon adsorption technology in the chemical industry. The majority are to capture organic vapors from non-condensable gas streams, such as process exhausts. Other applications include process gas separations such as the removal of oxygen from air in the production of nitrogen. This article focuses on the capture of organic vapors from ...

Jan. 1, 1998

By AMCEC Inc.

Methods of Purification by Water Innovations, Inc.

Carbon Filtration is used for several reasons. Its primary purpose is the reduction of chlorine to less than 0.1 ppm. Chorine can damage softener resins, reverse osmosis membranes, and mixed bed deionization resins. Activated carbon will also help control tastes and odors, provide organic and hazardous organic chemical reduction, and some particulate reduction. ...

Jun. 21, 2017

By Water Innovations, Inc

Off-Gas Treatment Technologies for Soil Vapor Extraction Systems: State of the Practice

Untitled Document EXECUTIVE SUMMARY This document provides state-of-the-practice information on off-gas treatment technologies for soil vapor extraction ...

Jun. 1, 2006

By US EPA - Environmental Protection Agency

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

Air Emissions/Off-Gas Treatment

A number of technologies have been widely applied for removal of VOCs from off-gas streams. However, the application of these technologies to off-gases from site remediation may be quite limited. Biofiltration has been widely applied for VOC destruction in Europe and Japan, but it has only recently been used in the United States. Catalytic and thermal oxidation are widely used for the destruction ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

Common Treatment Train for Nonhalogenated VOCs

A treatment train is the combination of different treatment technologies. A system diagram of a common treatment train for nonhalogenated VOCs is illustrated below. A soil vapor extraction system is used to pull VOC vapor from the contaminated soil. An air sparging system delivers air below the water table to enhance bioremediation. After passing through a liquid/vapor separator, the VOC ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

Common Treatment Technologies for Nonhalogenated VOCs in Air Emissions/Off-Gases

Three technologies that are most commonly used to treat nonhalogenated VOCs in air emissions/off-gases are carbon adsorption, catalytic oxidation, and thermal oxidation. Carbon adsorption is a remediation technology in which pollutants are removed from air by physical adsorption onto the carbon grain. Carbon is 'activated' for this purpose by processing the carbon to create porous particles with ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

Common Treatment Technologies for Fuels in Ground Water, Surface Water, and Leachate

It may be necessary to know other subsurface information to remediate fuels in ground water. Treatability testing to characterize contaminant biodegradability and nutrient content may be needed for any biodegradation technology. A subsurface geologic characterization would be particularly important to characterize the migration of NAPLs. Recovery tests are usually necessary to design a ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

Common Treatment Technologies for Halogenated VOCs in Air Emissions/ Off-Gases

Three technologies that are most commonly used to treat halogenated VOCs in air emissions/off-gases are carbon adsorption, catalytic oxidation, and thermal oxidation. Carbon adsorption is a remediation technology in which pollutants are removed from air by physical adsorption onto the carbon grain. Carbon is 'activated' for this purpose by processing the carbon to create porous particles with a ...

Oct. 1, 1997

By Federal Remediation Technologies Roundtable

Common Treatment Technologies for Nonhalogenated VOCs

Soil vapor extraction (SVE), thermal desorption, and incineration are the presumptive remedies for Superfund sites with nonhalogenated VOC-contaminated soil. Because a presumptive remedy is a technology that EPA believes, based upon its past experience, generally will be the most appropriate remedy for a specified type of site, the presumptive remedy approach will accelerate site-specific ...

Jan. 1, 1999

By Federal Remediation Technologies Roundtable

Common Treatment Technologies for Halogenated VOCs in Ground Water, Surface Water and Leachate

It may be necessary to know other subsurface information to provide remediation of VOCs in the ground water. Treatability studies to characterize the biodegradability may be needed for any biodegradation technologies. Treatability studies are usually necessary to ensure that the contaminated ground water can be treated effectively at the design flow. A subsurface geologic characterization would ...

Oct. 1, 1997

By Federal Remediation Technologies Roundtable

Common Treatment Technologies for Nonhalogenated VOCs in Ground Water, Surface Water and Leachate

It may be necessary to know other subsurface information to provide remediation of VOCs in the ground water. Treatability studies to characterize the biodegradability may be needed for any biodegradation technology. Treatability studies are usually necessary to ensure that the contaminated ground water can be treated effectively at the design flow. A subsurface geologic characterization would be ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

Control VOC`s in Refinery Wastewater

Oil and water do not mix, like many of life’s one-liners this statement is basically true but not the whole story. Many hydrocarbon liquids, particularly aromatics, have significant solubilities in water: Benzene 1800 PPMVToluene 470Ethyl Benzene 150Xylenes 150 Petroleum refineries do not like salts in their feedstock since these corrode and foul process equipment. The first refining step is ...

Mar. 1, 1998

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

Sustainable soil remediation by refrigerated condensation at sites with `high-concentration` recalcitrant compounds and NAPL: two case studies

Remediation of recalcitrant compounds at sites with high concentrations of volatile organic com- pounds (VOCs) or nonaqueous-phase liquids (NAPLs) can present significant technical and financial (long-term) risk for stakeholders. Until recently, however, sustainability has not been included as a significant factor to be considered in the feasibility and risk evaluation for remediation ...

Oct. 13, 2010

By EnviroLogek Technologies

Real Time Measurments of Acetylene in Ethylene Manufacturing Process

Keywords Tunable Diode Laser, Wavelength Modulation Spectroscopy, Analyzer, Acetylene, Ethylene, Acetylene Converter Abstract The analyzer, based on near infrared Tunable Diode Laser Absorption Spectroscopy (TDLAS), was developed for the measurement of acetylene in process streams. Measurements of acetylene were made as under laboratory conditions and in ...

Nov. 14, 2014

By Ametek Process Instruments - THERMOX

Data Requirements for Soil, Sediment, and Sludge

Site soil conditions frequently limit the selection of a treatment process. Process-limiting characteristics such as pH or moisture content may sometimes be adjusted. In other cases, a treatment technology may be eliminated based upon the soil classification (e.g., particle-size distribution) or other soil characteristics. Soils are inherently variable in their physical and chemical ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

Common Treatment Technologies for Fuels in Soil, Sediment, and Sludge

Common treatment technologies for fuels in soil, sediment, and sludge include biodegradation, incineration, SVE, and low temperature thermal desorption. Incineration is typically used when chlorinated SVOCs are also present with fuel, and not specified for fuel-only contaminated soil, sediment, or sludge. All types of biodegradation, both in situ or ex situ, can be used to remediate soils: ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

Methods of Purification

Water Innovations Water Systems Carbon Filtration is used for several reasons. Its primary purpose is the reduction of chlorine to less than 0.1 ppm. Chorine can damage softener resins, reverse osmosis membranes, and mixed bed deionization resins. Activated carbon will also help control tastes and odors, provide organic and hazardous organic chemical ...

Oct. 31, 2016

By Water Innovations, Inc

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