Ambit of Carbon Capture Technology in India

. Carbon capture is one of the most improving technology of late, with the advent of climate change globally. Work behind carbon capture is still at a progressive stage as far as India is concerned. Carbon capture involves state of the art technology and heavy economic value addition. Since Carbon dioxide is known for its devastating threat towards mankind and habitat, hence developing and adopting carbon capture mechanisms would lead to draining back ecological balance. In this paper we would be trying to come out with possible technologies that can be implemented for carbon capture and further sequestrating it. Additionally the scope of carbon capture in Indian industries, the governing policy framework and the limitations.


INTRODUCTION
One of the first thought that occur to us in finding out what initiatives are to be taken to combat global climate change are mitigation efforts. Now broadly mitigation efforts can be further explained as the usage of makeshift technology from conventional fuel to non-conventional. Renewable energy is therefore a colossal supplement to the existing conventional infrastructure. India has been trudging ahead heavily on the improvement of renewable energy implementation, with the Indian government making policies on non-conventional energy, like the Renewable Purchase obligation (RPO). Most of the major sectors in India which are highly energy intensive like Power, Railways, Iron & Steel, Oil & gas, are adapting measure on the renewable front to cut down on the usage of fossil fuels.
Climate Change is a serious global environmental concern. It is primarily caused by the building up of Green House Gases (GHG) in the atmosphere. The global increases in carbon dioxide concentration are due primarily to fossil fuel use and land use change, while those of methane and nitrous oxide are primarily due to agriculture. Global Warming is a specific example of the broader term, "Climate Change" and refers to the observed increase in the average temperature of the air near earth's surface and oceans in recent decades. Its effect particularly on developing countries is adverse as their capacity and resources to deal with the challenge is limited Carbon capture in India is relatively a newer concept, though it is established in many countries like Canada and US, India is still on the building phase. Carbon capture technology involves a lot of technical expertise and monetary support which is yet on the developing phase in India.
Carbon capture technology is classified into few processes like Pre-capturing, Post-Capturing, and Oxy Fuel Separation methods. These mentioned methods are already proven and established. Further researches are carried out on the capturing front.
Post capturing, storing the captured carbon dioxide is a challenge though technologies are being used to store it deep underground. But storing underground in areas of human invasion or natural resource will not only hamper the habitat but also will harm the natural resource underground. So a suitable alternative would be to store in a place which neither has human invasion nor would threat the naturally existing resources. The probable location that was ascertained was depleted oil and gas beds, or exhausted mines. Locating out places with exhausted oil and gas beds or even mines is technically very challenging. India is expected continue its dependency on coal for the next 150 years. With the advancement of emissions, it is unlikely that global temperatures wouldn't alter. Climatic conditions are expected to vary aberrantly in the upcoming few decades.
Carbon capture and sequestration is an interrelated process, wherein it comprises a number of steps starting from capture till storage.
The government of India has shown great intent in taking up initiatives against climate change in India. India today stands as the 5 th largest power generator. India also has the 5 th largest capacity of wind energy generation in the world. Economic growth, increasing prosperity a growing rate of urbanization and raising per capita energy consumption has widened access to energy in India.

Pre Capture separation
Pre Capture is widely applied in fertilizer, chemical, gaseous fuel (H 2 , CH 4 ), and power production. In this the fossil fuel is partially oxidized, for instance in a gasifier. The resulting syngas (CO and H 2 ) is shifted (water shift reaction) into CO 2 and H 2 . The resulting CO 2 can be captured from a relatively pure exhaust stream. The H 2 can be used as fuel, the carbon dioxide is removed before combustion takes place. There are several advantages and disadvantages when compared to conventional post combustion carbon dioxide capture. The CO 2 is removed after combustion of fossil fuels, but before the flue gas is expanded to atmospheric pressure. This scheme is applied to new fossil fuel burning power plants, or to existing plants where re-powering can be done.

Post capture separation
The CO 2 is removed after combustion of the fossil fuel this would be applied to fossil-fuel burning power plants. Carbon dioxide is captured from flue gases at power stations or other large point sources. The technology is well understood and is currently used in other industrial applications, although not at the same scale as might be required in a commercial scale power station.

Oxy fuel separation
The fuel is burned in oxygen instead of air. To limit the resulting flame temperatures to levels common during conventional combustion, cooled flue gas is recirculated and injected into the combustion chamber. The flue gas consists of mainly carbon dioxide and water vapor. The result is an almost pure carbon dioxide stream that can be transported to the sequestration site and stored. A certain fraction of the CO 2 generated during combustion exhaust up in the condensed water. To warrant the label "zero emission" the water would thus have to be treated or disposed of appropriately. The technique is promising, but the initial air separation step demands a lot of energy  Carbon dioxide sequestration using anoxic microbial consortium for the production of methane fuel and oxygenic microbial consortium for bioconversion of methane to methanol

Oil and gas
Indian Petroleum Act, 1934: Rules for production and transportation of petroleum products, can be applied for transportation of compressed CO 2 .The Oilfields (Regulation and Development) Act, 1948 (53 of 1948): Royalties in respect of mineral oils. The Petroleum Mineral Pipelines (Acquisition of Right of User in Land) Act, 1962: Provides for the acquisition of user in land for laying pipelines for the transport of petroleum and minerals and for matters connected therewith. This law may be applied for transportation of compressed CO 2 to storage sites. The Oil Industry (Development) Act, 1974, an act to provide for the establishment of a Board for the development of oil industry and for that purpose to levy a duty of excise on crude oil and natural gas and for matters connected therewith. Petroleum and Natural Gas Rules, 1959: An act to provide petroleum exploration license and mining leases. Government of India is looking after development of Coal Bed Methane production under Ministry of Petroleum and Natural Gas

Groundwater
Water (Prevention and Control of Pollution) Act 1974 enacted by Ministry of Environment and Forest, Government provide for the prevention and control of water pollution, and for the maintaining or restoring of wholesomeness of water in India. CCS has environmental impacts in terms of chances of groundwater contamination and this act could be suitably modified to include contamination of groundwater in case there is any leakage of stored CO 2 .

Environmental impact assessment
Amending the Environmental Protection Act, 1986 would prove beneficial to facilitate demonstration projects and may be done on a project-specific basis before broader amendments can be established. CO 2 has to be transported across states and be stored in a region different to the point of collection, regional coordination groups will need to be established to address issues related to CO 2 transport and storage. Retrofitting of CO 2 capture capability to existing power plants may be done under the Environment Impact Assessment Notification S.O.60 (E) (under the provisions of the Environment (Protection) Act 1986) .The applicant must submit an application to the Secretary of the Ministry of Environment and Forests, New Delhi to obtain environmental clearance.

Financing and investment
Given the higher initial investment as well as operating costs, CDM (Clean Development Mechanism) and carbon markets in their present state would prove very difficult o support and promote CCS. Policy for financing and investment should be such that the additional energy penalty due to retrofitting of the power plant for CCS is partly or wholly covered by earnings from CDM/carbon markets. Many multilateral financing institutions like the World Bank, International Monetary Fund, and the Asian Development Bank may take a lead in developing specific financial packages and instruments, those countries that are technologically advanced in CCS should come forward in supporting, including capacity development, initial CCS projects in India.

Limitations of CCS in India
India is a developing country hence the first major drawback lies in the strengthening of its economy. With the advent of research and development in India, limited work has been done on CCS.
Worldwide, CCS is still in the maturing phase. One major barrier to CCS deployment in India is the lack of accurate geological storage site data, since before capture technology can be installed in power plants or other sources, the location, capacity, permeability, and other characteristics of the sinks must be known. The issue of CCS drastically increasing the cost of electricity while reducing net power output is often cited as being one of the biggest barriers to acceptability of CCS in India.

ILCPA Volume 59
Clarity is needed on how CCS implementation via retrofit of capture equipment to existing plants will change the Terms of Reference of the plant. In particular, the fresh environment clearances required .Access to funding from financing agencies such as the World Bank, Asian Development Bank, etc. might require further governance requirements in addition to the existing requirements e.g. around monitoring, measure and verification. These may be dependent on CCSspecific clearances being available from the Ministry of Power and/or other Government bodies, in addition to the existing clearances required. Readying of CCS on a large scale requires specialized workforce and suitable infrastructure, which may not be available in India at present. Monitoring the stored CO 2 to assure against leakage is essential if the central purpose of CCS implementation is to be fulfilled. Ensuring rigorous monitoring is needed over long time scales and techniques developed internationally in this area need to be introduced to Indian stakeholders. Legal issues related to land acquisition; ground water contamination, CO 2 leakage, etc. need to be addressed before any large scale transport and storage of CO 2 can be permitted.

CONCLUSION
Climate Change is a serious global environmental concern. It is primarily caused by the building up of Green House Gases (GHG) in the atmosphere. The global increases in carbon dioxide concentration are due primarily to fossil fuel use and land use change, while those of methane and nitrous oxide are primarily due to agriculture. Global Warming is a specific example of the broader term Climate Change and refers to the observed increase in the average temperature of the air near earth's surface and oceans in recent decades. Its effect particularly on developing countries is adverse as their capacity and resources to deal with the challenge is limited.
Carbon sequestration process and its vulnerability has a great potential for defending climate change, and to bring across this change it is equally important to supplement it with proper knowledge and economy.
Since Climate Change has been such a threatening issue over the last few years, it's high time to take adequate steps in encountering it. Emphasis lies in keeping the global temperature below the 2degree Celsius which was previously set through U.N. conventions, greenhouse gas emissions will have to drop by 40-70% by 2050.
In the first decade of the 21st century, emissions rose by 2.2% per year, for which countries with population and economic growth like China and other parts of the developing world are highly responsible. The U.N. is working toward a far-reaching new global climate pact, to be completed in late 2015 and to take effect in 2020. But the major challenge has been getting rich and poor nations to agree on a plan at a common platform.