the process at high pressure is to ensure maximum separation of product‚ by-products and unreacted Ethanol after the reactor. The mixture is pre-heated to a temperature of 275oC (the optimum temperature for dehydrogenation of Ethanol using Copper-Chromium-Cobalt catalyst) before entering the packed bed reactor. The reaction takes place in gaseous state. The reason for using a packed bed reactor is because it allows gaseous reactions‚ has higher conversion per weight of catalyst compared to other catalytic
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frequently use words that no one has “taught” them. This is because children learn by using inferences. For example‚ if you show an infant a red block and a green block‚ then say “Please give me the chromium block‚ not the red block‚” most infants will give you the green block‚ despite not knowing that chromium is a shade of
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Metal + a Nonmetal Examples FeCl2 and FeCl3 Stock System Rule: Full Name + a Roman Numeral + The Stem of + “ide” of the metal for the Charge the nonmetal Formula Charge Name CrS 2 Chromium(II) Sulfide Fe2O3 3 Iron(III) oxide CrI3 3 Chromium(III) iodide CuCl 1 Copper(I) chloride PbO 2 Lead(II) oxide Hg2Cl2 1 Mercury(I) chloride FeS 2 Iron(II) sulfide As2O5 5 Arsenic(V) oxide CuBr2 2 CoI3 3 SnCl2 2 PbO2 2 As2S3 3 SnF4 4 CoO 2 HgO 2 Cu2O 1 HgS 2 III
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Green computingFrom Wikipedia‚ the free encyclopediaJump to: navigation‚ search Green computing or green IT‚ refers to environmentally sustainable computing or IT. In the article Harnessing Green IT: Principles and Practices‚ San Murugesan defines the field of green computing as "the study and practice of designing‚ manufacturing‚ using‚ and disposing of computers‚ servers‚ and associated subsystems—such as monitors‚ printers‚ storage devices‚ and networking and communications systems—efficiently
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exchangeable and carbonate fractions was much higher between 18 and 14 cm. In the Fe-Mn oxide fraction‚ it decreased from the bottom to 8 cm followed by an increase towards the surface. Cobalt exhibited very high concentration at 8 cm in the organic phase. Chromium showed overall an increase from the bottom to 14 cm in exchangeable‚ carbonate and organic phases and then exhibited overall decrease towards the surface. The organic and Fe-Mn oxide phases showed slightly higher values between 18 and 14
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Sharma H R 1992 Chromium removal by adsorption on rice husk ash. Indian J. Environ. Prot. 12 (3): 198201. * Griffin R A‚ Au H K and Forest R R 1977 Effect of pH on adsorption of chromium from land fill leach ate by clay minerals. J. Environ. Sci. Health Ser. A 12: 431449. * Gupta M S‚ Bhargava D S and Varshney B S 1987 Removal of chromium through adsorption on saw dust. J. Inst. Engg. (India) Environ. Eng. 67: 6469. Indian * S. Ristic and Tonkovic M 1986 Sorption of chromium (VI) on hydroxide
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Nutrition is the process of consuming‚ absorbing‚ and using nutrients needed by the body for growth‚ development‚ and the maintenance of life; nutrients are chemical substances in foods that nourish the body. Many nutrients can be synthesized in the body’. Those that cannot be synthesized in the body called essential nutrients-must be consumed in the diet. They include amino acids (in proteins)‚ certain fatty acids (in fats and oils)‚ minerals‚ and vitamins. Nine of the 20 amino acids in proteins
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. SUMMARY OF PROPOSAL Welding is a process used to join metal parts by producing a coalescence‚ called a weld‚ at a joint. Advances in welding technology have opened the way for innovative designs in structures and machinery. Of modern welding processes‚ the greatest number fall under the general classifications of arc welding‚ gas welding and cutting‚ resistance welding‚ and brazing. Tungsten Inert Gas (TIG) welding is one of the arc welding methods. This method is suitable for many kinds
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For nearly six thousand years‚ Ayurvedicmedicine has utilized the benefits of amla‚ a round‚ yellow‚ bitter fruit also known as the Indian gooseberry. Amla is so bitter and so sour that it will literally make your hair stand on end‚ and that makes it wonderfully useful in natural medicine. Because most toxins in the natural world are bitter‚ the human body is fine tuned to detect them. A bitter taste on the tongue usually makes us want to spit food out‚ and the taste receptors we also have in the
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Chapter 8 – Water and Minerals Chapter Learning Objectives 8.1 Describe the body’s water sources and routes of water loss‚ and name factors that influence the need for water. 8.2 Compare and contrast the health effects of various sources of fluid. 8.3 Discuss why electrolyte balance is critical for the health of the body. 8.4 Identify the major minerals important in human nutrition and their physiological roles in the body‚ the consequences of deficiencies‚ and their most important food sources
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