vnandhu

vnandhu

16 September 2011

CARBON SEQUESTRATION or BIOSEQUESTRATION



Carbon sequestration is the capture of carbon dioxide (CO2) and may refer specifically to:

"The process of removing carbon from the atmosphere and depositing it in a reservoir.

It is also referred to as carbon dioxide removal, which is a form of geoengineering.

The process of carbon capture and storage, where carbon dioxide is removed from flue gases, such as on power stations, before being stored in underground reservoirs.

Natural biogeochemical cycling of carbon between the atmosphere and reservoirs, such as by chemical weathering of rocks.

Carbon sequestration describes long-term storage of carbon dioxide or other forms of carbon to either mitigate or defer global warming. It has been proposed as a way to slow the atmospheric and marine accumulation of greenhouse gases, which are released by burning fossil fuels.


Carbon dioxide is naturally captured from the atmosphere through biological, chemical or physical processes. Some anthropogenic sequestration techniques exploit these natural processes,

Artificial processes.

Carbon dioxide may be captured as a pure by-product in processes related to petroleum refining or from flue gases from power generation.

CO2 sequestration includes the storage part of carbon capture and storage, which refers to large-scale, permanent artificial capture and sequestration of industrially produced CO2 using subsurface saline aquifers, reservoirs, ocean water, aging oil fields, or other carbon sinks.

DRDO's BIO-DIGESTORS

DRDO’s bio-digesters

DRDO has developed bio-digesters to solve human waste disposal problem.

Defence Research and Development Establishment (DRDE), has developed this technology wherein a special form of bacteria is used to treat human waste in zero discharge toilet

This technology developed by the premier defense research organization was used to decompose biological waste generated by soldiers deployed in high-altitude regions such as Siachen and Ladakh.

The specific requirements of passenger trains, Railways and DRDO signed a MoU to co-develop these bio-digesters to keep railway tracks clean. They modified the technology to deal with the problem of people throwing all kind of waste materials in train toilets.

The bacteria which is used in these bio-digesters is found in Antarctica and has been modified to suit the different projects of DRDO to make bio-digesters for different climatic region