Search results
Results from the WOW.Com Content Network
The global distillation process can be understood using the same principles that explain distillations used to make liquor or purify chemicals in a laboratory. [6] In these processes, a substance is vaporized at a relatively high temperature, and then the vapor travels to an area of lower temperature where it condenses.
Distillation, also classical distillation, is the process of separating the component substances of a liquid mixture of two or more chemically discrete substances; the separation process is realized by way of the selective boiling of the mixture and the condensation of the vapors in a still.
Overall, 94% of ethanol in the United States is produced from corn. [5] Currently, corn ethanol is mainly used in blends with gasoline to create mixtures such as E10, E15, and E85. Ethanol is mixed into more than 98% of United States gasoline to reduce air pollution. [5] Corn ethanol is used as an oxygenate when mixed with gasoline.
The alcohol is removed by a second distillation, leaving behind the absolute. These extracts from plants such as jasmine and rose, are called absolutes. Due to the low temperatures in this process, the absolute may be more faithful to the original scent of the raw material, which is subjected to high heat during the distillation process.
Fractional distillation is the most common form of separation technology used in petroleum refineries, petrochemical and chemical plants, natural gas processing and cryogenic air separation plants. [ 3 ] [ 4 ] In most cases, the distillation is operated at a continuous steady state .
Air pollution can occur naturally or be caused by human activities. [3] Air pollution causes around 7 million deaths each year. [4] [5] It is a significant risk factor for a number of pollution-related diseases, including heart disease, stroke, chronic obstructive pulmonary disease (COPD), asthma and lung cancer.
Syngas fermentation, also known as synthesis gas fermentation, is a microbial process. In this process, a mixture of hydrogen , carbon monoxide , and carbon dioxide , known as syngas , is used as carbon and energy sources, and then converted into fuel and chemicals by microorganisms .
For instance, in a distillation of ethanol and water, water will boil out of the remaining ethanol, rather than the ethanol out of the water as at lower concentrations. Overall the pressure-swing distillation is a very robust and not so highly sophisticated method compared to multi component distillation or membrane processes, but the energy ...