Successful Urban Rock Tunneling in Spite of Encountering Gasoline, Cleaning Solvents, and Methane Gas

Evaluating a Model of Anaerobic Digestion of Organic Wastes through System Identification

Potential for Anaerobic Treatment of Airport Deicing Fluids

Sodium Toxicity in Methanogenic Systems: Rates and Modeling

Reaeration Measurements Using a Methane Tracer at Six Dams in the Ohio River Basin

Biodegradation of Dichloromethane in Leachate
The biodegradation of dichioromethane (DCM) in landfill leachate is examined by means of a series of laboratory tests conducted in a controlled environment. These tests demonstrate that...

Fluid Inclusion Studies of Calcite Veins from Yucca Mountain, Nevada, Tuffs: Environment of Formation

Pros and Cons of Developing Recreational Facilities on Closed Landfills

Substrate Effects on Methanotrophic Trichloroethylene Degradation
Formate up to 1g/L had no significant enhancing effect on the degradation of trichloroethylene (TCE) by three mixed enrichments of methane-oxidizing bacteria. Methanol did not enhance...

Methane Tracer Technique for Gas Transfer at Hydraulic Structures
Using a simple headspace gas chromatographic technique, gas transfer at several hydraulic structures were investigated. Naturally occurring methane was used as a tracer gas to measure...

Geocomposites Simplify Methane Barrier/Venting System Design
A case history describing the use of a geomembrane and geocomposite to simplify the design of a combined subsurface barrier and venting system is presented. The passive barrier and venting...

Mass Balance Analysis of Decomposed Refuse in Laboratory Scale Lysimeters
Decomposition of shredded municipal refuse was studied under laboratory conditions with leachate recycle and neutralization. Cellulose and hemicellulose accounted for 91% of the methane...

Gas Transfer at Hydraulic Structures
Field measurements of gas transfer at hydraulic structures are notoriously difficult and imprecise. A technique which measures the transfer of hydrocarbon tracer gases has been tested...

Evaluation of Landfill Leachate Recirculation
The effectiveness of leachate recycle as a leachate management technique has been evaluated at a landfill in central Pennsylvania where recirculation has been practiced for seven years....

Effects of Sampling Equipmenton the Chemical Integrity of Groundwater Samples
Proper sampling of groundwater is one of the basic steps in monitoring movement of pollutants in groundwater systems. The effect of the use of silicone rubber when used as a bladder in...

Saline Water Disposal from a Coal Bed Methane Recovery Well Field
A conceptual engineering approach for low cost management of production water from coal bed methane recovery wells is presented. The approach is applicable for production water that contains...

Climate Trends Due to Increasing Greenhouse Gases

Energy Conservation in Municipal Sludge Research

Attached and Suspended Growth Methanogenesis

Grouting Methane Drainage Holes in Coalbeds





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