Combustion process, whether used for electricity generation or in Essay

Combustion process, whether used for electricity generation or in engines for transport, produce airborne emissions of environmental concern - Essay Example Acid rain is due to the presence in the atmosphere of SO2 and NOx which, after a series of reactions, are deposited as nitric and sulphuric acid in the form of rain. Particulate matter is known to cause serious respiratory diseases. Carbon sequestration is a method that allows the reduction of CO2 by capturing it at its source (e.g. a power plant) and storing it in non-atmospheric reservoirs such as geologic or oceanic reservoirs (Herzog). The Sleipner project is a working example of carbon sequestration technology. Off the coast of Norway in the North Sea, it is in fact the world's first commercial CO2 capture and storage project collecting about one million metric tons of CO2 each year since it was opened in 1996 (Sleipner CO2 project). The term "scrubber" is used to refer to a group of air pollution control devices that aid the removal of fine particles and/or gases (especially acid gases) from industrial exhaust streams. Scrubbers work by either physically removing substances from the exhaust gas stream or by chemically neutralising them so that they cannot do any harm once released into the environment. Wet scrubbing is used to clean gases from pollutants and particulates by putting in contact the exhaust gas stream with the scrubbing solution. The scrubbing solution can simply be water for the removal of dust or a chemical solution which contains reagents that can specifically target certain compounds. Removal efficiency of pollutants is improved by increasing residence time in the scrubber or by the increase of surface area of the scrubber solution. 2.2. Dry scrubbing Dry scrubbing is generally used to remove acid gases, such as SO2, primarily from combustion sources. All dry scrubbing systems consist of two main devices: 1) a device to introduce a solid sorbent material into the gas stream; and 2) a particulate control device to remove reaction products, excess sorbent material, any particulate matter already in the flue gas. 2.3. Seawater scrubbing The natural buffering capacity of seawater can be taken advantage of by using it as a sorbent in a scrubbing system. When SO2 comes into contact with seawater a reaction takes place between the SO2 and the CaCO3 present in the seawater, producing CaSO4 and CO2. This reaction is complete in a very short time, so the equipment required for seawater scrubbing can be compact. 3. NOx 3.1. Primary measures Primary measures can be applied pre-combustion. In Bowin low NOx technology, air and

Firms Actions in Increasing Its Profitability and Producing High Qual Assignment

Firms Actions in Increasing Its Profitability and Producing High Quality Products - Assignment Example The theory of a firm ensures that it regulates all the above-named factors in the company to ensure that they lead to the success of this firm. This principle focuses on using cheap and available inputs in the production processes since they reduce the cost incurred during production. They are also concerned with the methods that are used by the firm in the production process. For example, the products produced must be of very high quality since this principle is able to equalize on the inputs. This theory articulates that all the firms will realize a great profit if they produce goods up to the point where the marginal revenue is equal to the marginal cost, whereas, the firm consumes all its factors of production to the point where the cost of production is at par with the marginal revenue. The theory is known to be the best in identifying the future of the firm, ensuring that it makes enough profit with time. The theory ensures that it studies the structure of the company and improves its relationship with the market for it to succeed in the future. The theory is also effective in answering some other economic questions such as how different firms come to emerge and grow in the economy, relationships between different firms and the markets, and how to improve the performance of a firm through its actions. The theory of a firm economic principle is very effective in ensuring that the costs incurred in the production process do not also exceed the earnings after production to prevent losses. The model balances between the internal and external transactions in every firm ensuring that the firm is able to grow with time (Suà ¡rez 2012). For example, it is through this principle whereby the external transactions are always made to cost higher compared to the internal transactions for the firm to grow. There are various economic principles, which can be used to explain why the prices of maize fluctuated greatly over the period in the past five years.