Carbon dioxide

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Carbon dioxide - Uses
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Carbon dioxide, Carbon dioxide - Atmosphere, Carbon dioxide - Biology, Carbon dioxide - Chemical and physical properties, Carbon dioxide - Dry Ice, Carbon dioxide - Handling, Carbon dioxide - History, Carbon dioxide - Oceans, Carbon dioxide - Uses, Carbon dioxide - Variation in the past, Carbon dioxide (data page), Cellular respiration, Fossil fuel, Greenhouse gas, Natural gas, Photosynthesis

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ARTICLES RELATED TO Carbon dioxide - Uses

Carbon dioxide - Uses: Encyclopedia II - Carbon dioxide - Uses

Liquid and solid carbon dioxide are important refrigerants, especially in the food industry, where they are employed during the transportation and storage of ice cream and other frozen foods. Solid carbon dioxide is called "dry ice" and is used for small shipments where refrigeration equipment is not practical. Carbon dioxide is used to produce carbonated soft drinks and soda water. Traditionally, the carbonation in beer and sparkling wine comes about through natural fermentation, but some manufacturers ...

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Carbon dioxide - Variation in the past

Carbon dioxide - Uses: Encyclopedia - Clean coal

Clean coal is coal chemically washed of minerals and impurities, sometimes gasified, burned and the resulting flue gases treated with steam and reburned so as to make the carbon dioxide in the flue gas economically recoverable. The carbon dioxide will then be sequestered by some means (several are being explored - see Carbon dioxide sink). The primary example of clean coal is the proposed US FutureGen ...

Carbon dioxide - Uses: Encyclopedia - Carbon fixation

Carbon fixation is a process found in autotrophs, usually driven by photosynthesis, whereby carbon dioxide is converted into organic compounds. In plants, there are three types: C3 - plant that uses the Calvin Cycle for the initial steps that incorporate CO2 into organic matter, forming a 3-carbon compound as the 1st stable intermediate. C4 - plant that prefaces the Calvin Cycle with reactions that incorporate CO2 into 4-carbon compou

Carbon dioxide - Uses: Encyclopedia - Carbon flux

Carbon flux is an abbreviated phrase used loosly to refer to the net difference between sequestration and respiration of carbon dioxide. Given the accepted definition of what constitutes a flux, a more appropriate name for the annual difference between carbon sequestration and respiration would be "annual atmospheric carbon accumulation rate" or "annual global integrated surface flux of carbon" or "anual global net carbon flux" . Annual net carbon flux has been grossly calculated to be close to zero.[1] That is, emission and absorptio

Carbon dioxide - Uses: Encyclopedia - Carbon sequestering

Carbon Sequestering is a process whereby trees and other plants remove carbon dioxide from the atmosphere and through photosynthesis, turn it into plant material. Recent, some have proposed the sequestering of carbon-dioxide by capturing the exhaust from a fossil fuel combustion and pumping it back into earth. The increase in pressure can be used to enhance the extraction of additional fossil fuel in nearbby wells. This is sometimes referred to as "resequestration". There is much concern however that the carbon will not remain captive, and would leak bac ...

Carbon dioxide - Uses: Encyclopedia - Carbonatation

Carbonatation is the process used in the production of sugar from sugar beet, whereby raw beet juice is mingled with milk of lime and carbon dioxide enriched gas in carbonation tanks. Carbonatation involves the following effects: The increase in alkalinity coagulates proteins in the juice. Calcium carbonate absorbs colourants Alkalinity destroys some monos ...

Carbon dioxide - Uses: Encyclopedia - Ammonium bicarbonate

Ammonium Bicarbonate also called bicarbonate of ammonia, ammonium hydrogen carbonate, hartshorn, or powdered baking ammonia is the bicarbonate salt of ammonia. Ammonium bicarbonate is formed as shown above and also by passing carbon dioxide through a solution of the normal compound, when it is deposited as a white powder, which has no smell and is only slightly soluble in water. The aqueous solution of this salt liberates carbon dioxide on exposure to air or on heating, and becomes alkaline in ...

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Carbon dioxide - Uses: Encyclopedia - Carbon monoxide

Carbon monoxide, chemical formula CO, is a colourless, odourless, tasteless, flammable and highly toxic gas. It is a major product of the incomplete combustion of carbon and carbon-containing compounds. It is less dense than air under ordinary conditions. It is very slightly soluble in water and burns in air with a characteristic blue flame, producing carbon dioxide; it is a component of producer gas and water gas, which are widely used artificial fuels. It is a reducing agent, removing oxygen from many compounds and is used in the re ...

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Carbon dioxide - Uses: Encyclopedia - Biofuel

Biofuel is any fuel that derives from biomass — recently living organisms or their metabolic byproducts, such as manure from cows. It is a renewable energy source, unlike other natural resources such as petroleum, coal and nuclear fuels. The carbon in biofuels was recently extracted from atmospheric carbon dioxide by growing plants, so burning it does not result in a net increase of carbon dioxide in the Earth's atmosphere. As a result, biofuels are seen by many as a way to reduce the amount of carbon dioxide released into the atmosphere by using th ...

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Biofuel - Classes of Biofuels

Read more here: » Biofuel: Encyclopedia - Biofuel

Carbon dioxide - Uses: Encyclopedia - Autotroph

An autotroph (from the Greek autos = self and trophe = nutrition) is an organism that produces organic compounds from carbon dioxide as a carbon source, using either light or reactions of inorganic chemical compounds as a source of energy. Plants and other organisms using photosynthesis are phototrophs, also called photoautotrophs; bacteria that utilize the oxidation of inorganic compounds such as hydrogen sulfide or ferro ...

Carbon dioxide - Uses: Encyclopedia - Chemosynthesis

Chemosynthesis is the biological conversion of 1-carbon molecules (usually carbon dioxide or methane) and nutrients into organic matter using the oxidation of inorganic molecules (e.g. hydrogen gas, hydrogen sulfide) or methane as a source of energy, rather than sunlight, as in photosynthesis. Large populations of animals can be supported by chemosynthetic primary production at hydrothermal ...

Carbon dioxide - Uses: Encyclopedia - Sodium silicate

Sodium silicate, also known as water glass, is a compound used in cements, textile and lumber processing. Sodium silicate - Properties. Sodium carbonate and silicon dioxide react when molten to form sodium silicate and carbon dioxide. Sodium silicate is a white solid that is soluble in water, producing an alkaline solution. There are many kinds of this compound, including sodium orthosilicate, Na4SiO4; sodium metasilicate, Na2SiO3; sodium polysilicate, (Na< ...

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Carbon dioxide - Uses: Encyclopedia - Butane

Butane, also called n-butane, is the unbranched alkane with four carbon atoms, CH3CH2CH2CH3. Butane is also used as a collective term for n-butane together with its only other isomer, isobutane (also called 2-methylpropane), CH3CH(CH3)2. Butanes are highly flammable, colorless, easily liquefied gases. Butane - Reactions and uses. When oxygen is plentiful, butane burns to form carbon dioxid ...

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Butane - Reactions and uses

Read more here: » Butane: Encyclopedia - Butane

Carbon dioxide - Uses: Encyclopedia - CeriumIV oxide

Cerium(IV) oxide, ceric oxide, ceria, or sometimes simply cerium oxide or cerium dioxide, is a pale yellow-white powder, CeO2. It is used in ceramics, to polish glass, and to sensitize photosensitive glass. It is also used in lapidary as "jeweller's rouge" and in the walls of self-cleaning ovens. It is slightly hygroscopic and will also absorb a small amount of carbon dioxide from the atmosphere. Note that cerium als ...

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CeriumIV oxide - Ceria as a fuel cell electrolyte

Carbon dioxide - Uses: Encyclopedia - Biodegradation

Biodegradation is the decomposition of organic material by microorganisms. It is often used in relation to sewage treatment, environmental remediation (bioremediation) and to plastic materials although biodegradation is perhaps better regarded as the closing of the loop commencing with photosynthesis. Whereas photosynthesis is the process of creating growing matter through the conversion of carbon dioxide (CO2) and water (H2O) into plant material through the action of sunlight, biodegradation is the process of converting organic materials back into CO

Carbon dioxide - Uses: Encyclopedia - Breathing gas

Air is the most common and only natural breathing gas. Other artificial gases, either pure gases or mixtures of gases, are used in enclosed breathing environments such as SCUBA equipment, recompression chambers, submarines, space suits and anaesthetic machines. A safe breathing gas has three essential features: it must contain sufficient oxygen to support the life, consciousness and work rate of the breather. it must not contain harmful gases. Carbon monoxide and carbon dioxide are common poisons in ...

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Breathing gas - Unwelcome components of breathing gases

Carbon dioxide - Uses: Encyclopedia - Urea

Urea is an organic compound of carbon, nitrogen, oxygen and hydrogen, with the formula CON2H4 or (NH2)2CO. Urea is also known as carbamide, especially in the recommended International Non-proprietary Names (rINN) in use in Europe. For example, the medicinal compound hydroxyurea (old British Approved Name) is now hydroxycarbamide. Urea - Physiology. The individual atoms of urea come from carbon dioxide, water, aspartate and ammonia in a ...