The Dangers of Gas Hydrates

Gas hydrates have a crystalline form and resemble ice. Gases are typically trapped within the hydrates, which can be found inside of permafrost or in sediments below the seafloor. The most common gas trapped inside of the hydrates (or clathrates) is methane. They are usually formed in cold, high pressure areas and have a compact […]

An Introduction to Greenhouse Gases

Greenhouse gases are generally any gas molecules or compounds in the atmosphere which interact with outgoing infrared radiation from the sun and thus contribute to the Greenhouse Effect by warming the atmosphere. The major constituents of the atmosphere such as nitrogen (N2) and oxygen (O2) do not interact with infrared radiation and, thus are not […]

Biogas Enrichment using PSA Technique

Pressure swing adsorption, also known as carbon molecular sieves, is one of most popular biogas upgrading techniques. A typical PSA system is composed of four vessels in series that are filled with adsorbent media which is capable of removing water vapor, CO2, N2 and O2 from the biogas stream. During operation, each adsorber operates in an alternating […]

Output from a Biogas Plant

A biogas plant produces two outputs, biogas and digestate; both can be further processed or utilized to produce secondary outputs. Biogas can be used for producing electricity and heat, as a natural gas substitute and also a transportation fuel. A combined heat and power plant system (CHP) not only generates power but also produces heat […]

Few Words on Landfill Gas

Landfill gas (or LFG) is an asset as well as a serious threat. If we extract it right on time and preserve it then it will act as a valuable asset and if we leave as it is then it will be a serious threat as it can explode at any time. Landfill gas is […]

Biogas Cleanup Methods

Cleanup of biogas is primarily achieved by carbon dioxide removal which enhances the energy value of the gas to give longer, driving distances with a fixed gas storage volume. Removal of carbon dioxide also provides a consistent gas quality with respect to energy value. The latter is regarded to be of great importance from the vehicle […]