Coal Driven cover

Vol no. 15 Issue No. 89

Inside this issue

Coal Driven

Discovering Coal

By: Sulagna Chattopadhyay

The plant inhabitants of prehistoric swamps serve as a source of coal. Peat, lignite, bituminous and anthracite are the major varieties of coal found.

The Coalgate Concern

By: Staff Reporter

Coal blocks were allotted to private companies for captive mining through a 1993 amendment to the Coal Mines Nationalisation Act (1973). However, the CAG found that the blocks were not allotted in a transparent manner, neither had the companies begun production.

Coal Dependency in India’s Energy Needs

By: Abhijit Sarkar

Domestic coal production has been falling behind demand. Allowing private merchant miners and removing the ‘electricity’ and ‘non-electricity’ differentiation could serve to strengthen the sector.

Coal Auction in India

By: Rittwik Chatterjee and Srobonti Chattopadhyay

E-auctions can ensure transparency, prevent discrimination among buyers or favouritism, and let consumers have the coal of their choice.

Coal-based Economy in India: Post 2030

By: Nitya Nanda, and Saswata Chaudhury

Abundant and cheap availability of domestic coal led India to follow a coal centric development path in the past. Given the current trends in production and consumption, India is expected to exhaust its coal reserves within the next four decades.

Can coal ever be eco-friendly?

By: Staff Reporter

Notwithstanding its polluting nature, coal remains the cheapest and most convenient fuel for meeting India’s energy needs. Since hydro power and nuclear power have safety issues, and green energy remains expensive, the answer lies in working towards cleaner coal-based technology.

Coal Seam Fires

By: Rina Mukherji

Sanitation Perspectives

Decentralised sanitation

By: Rina Mukherji

Space constraints prevent Indian cities from laying sewerage lines for new or underserved pockets. DEWATS systems can help here.

In brief

Term Power

What is ...

A generic name for air pollution equipment which uses a range of filter bags/fabric types to separate particulate (dust, ash, powders, etc.) from the exhausting air stream. It is a required equipment as per the standards set by the Environmental Protection Agency (EPA) to ensure that all industrial exhaust gasses are particulate (dust) free.

A device found in power plants for generating steam for power, processing or heating purposes, or for producing hot water for heating purposes or hot water supply. Heat from an electrical combustion source is transmitted to a fluid contained within the tubes in the boiler shell.

A federal law in the US that defines EPA's responsibilities for protecting and improving its nation's air quality and the stratospheric ozone layer. The Clean Air Act Amendments of 1990 were the last major change in the law, enacted by Congress.

A type of substance, either liquid, solid or gas, that is manually added to coal for some altering purpose. Some additives are used to even out coal, alter emissions, improve furnace operation and a variety of other purposes.

The process of retrieving energy from the burning of fuels in the most efficient way possible. To maximize combustion efficiency, it is necessary to burn all fuel material with the least amount of waste.

An electrostatic precipitator (ESP), or electrostatic air cleaner, is a pollution control device that removes particles from a flowing gas (such as air) using the force of an induced electrostatic charge. ESPs are highly efficient filtration devices.

Substances that are released into the air from power generating plants among other sources. Major emissions that are regulated by the federal government are nitrogen oxide, sulphur dioxide and mercury. Carbon dioxide is also a major emission, but is not regulated.

A gas that exits into the atmosphere via a flue, which is a pipe or channel for conveying exhaust gases from a fireplace, oven, furnace, boiler or steam generator. Quite often, it refers to the combustion exhaust gas produced at power plants.

Finely divided particles of ash entrained in gases resulting from the combustion of fuel. Approximately six million tonnes of flyash are used each year in the US in major projects such as highway construction.

A metallic element that is toxic to human beings whose emission into the environment through the combustion of coal has come under increasingly tight restrictions.