Issue #1: Carbon Capture and Sequestration
a)What happens during carbon capture and sequestration?
Carbon sequestration technologies capture and store CO2 that would otherwise reside in the atmosphere for long periods of time. This process begins with the separation and capture of CO2 from power plant gas and other CO2 sources. Currently this process is costly and energy intensive. However, further study shows the potential for cost reductions of 30–45 percent for CO2 capture. Post-combustion, pre-combustion, and oxy-combustion capture systems that are being developed are expected to be able to capture more than 90 percent of CO2 gas.
The next step is to store the CO2. The main source for carbon storage is injection of CO2 into the land. Geologic storage involves taking the CO2 that has been captured from the power plants and other sources and storing it in deep underground land formations in such a way that CO2 will remain permanently stored. Geologic formations such as oil and gas reservoirs, unmineable coal mines, and underground saline formations are viable options for storing CO2. Storage in basalt formations and organic rich shales is also being investigated.
b) Why has there been a delay in implementing this technology and what are some of the problems foreseen in developing this solution to carbon dioxide emissions?
There has been a delay in implementing this technology for three reasons
1. Scale – For carbon capture and storage to make an actual contribution to reducing global warming pollution requires processing and transportation structures that could handle a volume of liquid carbon dioxide challenging that of the oil consumed in the U.S. today. In other words, the Department of Energy estimates the annual storage space needed for a typical 600-megawatt power plant’s emissions would be about four times the volume of the Empire State Building.
2. Safety – Demonstration projects are needed to determine if carbon dioxide can be stored permanently and in what type of underground geologic formations. Slow carbon leaks could destroy the technology’s effectiveness as a global warming solution and contaminate groundwater. Fast leaks from a storage site or a pipeline could threaten the lives of local residents.
3. Cost – Current plant designs cannot cost-effectively capture carbon dioxide. Studies estimate that adding the technology to a conventional coal plant would increase drastically the cost and reduce the energy output. Although there is advanced coal plant designs that are better suited for carbon capture, it still would be very expensive to add the technology.
c) Power companies have stated that fossil fuel plants provide base-load energy and for this reason, they will be necessary far into the future. What does base load mean? (Optional: This issue was discussed at Notre Dame’s Energy Forum. Discuss how problems with base load could be overcome as alternatives are put into the grid.)
Base load is the minimum amount of power that a utility or distribution company must make available to its customers, or the amount of power required to meet minimum demands based on reasonable expectations of customer requirements. Base load values typically vary from hour to hour in most commercial and industrial areas.
d) They mentioned China’s and India’s rapid development and huge reliance on coal. Will anything the U.S. does to reduce emissions from coal burning power plants be outweighed by China’s and India’s huge increases in coal use? What do you believe would be an international solution?
China is now the leader in carbon emissions and that amount carbon emissions from China is only expected to increase. The same is true for India. As these developing nations continue to develop and grow their reliance on coal will inevitably increase and their carbon emissions will increase as well. These huge increases in coal use will outweigh everything the U.S will be doing to reduce emissions form coal burning power plants. Even though the U.S. will be reducing their emissions the over use of coal and excessive amount of emission from China and India their reductions will be futile. Also China and India are still growing. China has a larger population than the U.S. and it is predicted that India’s population will be larger then China in 2030. Also India is making it easier for all it’s natives to buy cars. An international solution might be making a world wide emission standard. The United Nations could regulate it and if we all make an effort to reduce our emissions it won’t matter that other countries have much larger populations. That way one nation’s drastic reduction of emissions won’t be offset by other nations over emission. If we work together we can truly make the world a better place.

Sources: Frontline movie Heat and http://wvgazette.com/News/200810290849 ,
http://www.netl.doe.gov/technologies/carbon_seq/index.html
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