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    Chromium

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    Chromium, the seventh most abundant element on earth is a transition metal from group VI-B .It is found in nature as the bound form constituting approximately 0.1 – 0.3 mg.g-1 of the earth’s crust. The name of the element is derived from the Greek word "chroma" meaning color, because many of its compounds are intensely colored. Cr is able to exist in several oxidation states, of which the trivalent Cr (III) and hexavalent Cr (VI) species are the most stable and abundant forms (Zayed & Terry et

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    Chromium

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    One of the most controversial supplements on the market is chromium. In the body, its natural functions consist of potentiating the activity of insulin and influencing lipid and protein metabolism. It may also be involved in the formation of glycogen in muscle tissue and facilitate the transport of amino acids to the muscles. Chromium can also affect cholesterol metabolism (Williams, 262). There are different claims to this mineral’s benefits, but the most common ones are muscle building, and fat

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    Contaminants Of Chromium

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    the environment, it becomes a contaminant in both groundwater and soil. The fate of chromium in the environment is controlled by a variety of processes and mechanisms, including redox conversions, precipitation, dissolution, and adsorption reactions. Understanding these trends is important because it allows these same natural processes to be taken advantage of for the purposes of remediation and removal of chromium from the environment. Redox reactions can be facilitated to promote the conversion

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    known as OSHA. One of the more recent improvements to GKN’s safety and health is the regulation of Chromium. Where GKN uses Chromium, is in their paint booths, clean and prime line, and chemical processing areas. Additionally, chromium is released in areas that sand, grind or drill on primed parts. Many areas have products containing chrome, but do not use them in large quantities. (Chromium will be referred to as Chrome for the remaining of the paper.) GKN uses Chrome in their paints and

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    Chromium Picolinate and Weight Loss

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    Chromium Picolinate and Weight Loss Chromium picolinate is a nutritional supplement that works to increase the efficiency of insulin to optimal levels. Gaining increased popularity in the United States, this supplement has been touted a miracle mineral, one advertised to have myriad effects including weight loss, mood enhancement, energy promotion, increase in life span, and even the prevention of acne (Krzanowski, 1996). The most common usage for chromium picolinate is as a weight loss aid;

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    Does Chromium Picolinate Effectively Aid Weight Loss? For many years people all over the world have struggled to regulate weight loss and weight gain. Through research and experimentation, doctors can now provide people with methods of doing this. One widely used weight loss product is chromium picolinate. This is the main ingredient in capsules that are designed to reduce appetite and cravings and help convert fat to lean body tissue. Although there is no proven evidence that is one hundred

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    chains, thereby affecting many biological processes. Chromium (Cr) is one the important metal being employed far and wide in numerous industrial processes, including chrome leather tanning, chrome plating, ceramics, dyes, paints and pigments manufacturing, textile processing, metal finishing etc.(3-6). Leather processing industry is one of the major industries utilizing chromium in the form of chrome liqueur or chrome powder. Residual chromium is thus discharged in solid as well as liquid effluent

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    Management Proposal

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    purposes is composed of 0.35% carbon. For our case, we will use a chromium steel combination known as No. 5120, which is a much better quality alloy than carbon steel. The casehardened tool we seek to make will need to be able to withstand high stress impacts and have a hard durable surface to prevent the bit from breaking. Chromium-steel No.5120 is intended to fulfill these exact specifications. The desired levels of carbon and chromium are 0.20% and 0.75%, respectively. In order to accomplish

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    wastes is a pollution caused by waste containing in dissolved heavy metals. Waste with a high content of heavy metals could be dangerous pollutants. One of heavy metals that are harmful is chromium. Chromium contained in waste usually has a valence of three (Cr3+) and valence of six (Cr6+). Heavy metals such as chromium waste derived from metal plating industry (electroplating), paints/pigments industry and leather tanning industries. Cr waste (VI) is concerned because of its carcinogenic properties.

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    Chromite

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    Chromite Profile Chromite is an iron chromium oxide with a chemical formula corresponding to FeCr2O4. As it does not contain H2O in its molecular structure, chromite is anhydrous. The Crystalline Structure of Chromite: Taken from Earth Materials: Introduction to Mineralogy and Petrology By Cornelis Klein, Anthony Philpotts p.183 Useful properties Of the many ores that contain chromium, chromite is the only one that has commercial use. Chromium has a wide range of applications in metallurgical

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