Abandoned Acid Mine Drainage at Shoup’s Run Introduction Acid mine drainage (AMD) is an industrial waste which is the result of the extraction process of the mineral coal from the ground. It causes widespread pollution in the streams above and below the coals fields. AMD is caused when water flows through sulfur-bearing materials forming acidic solutions. It is formed when pyrite (FeS2)‚ an iron sulfide‚ is exposed and then reacts with air (O2) and water (H2O) to form sulfuric acid. 2FeS2
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The result of this study showed that bee bread extract has a protective effect in aluminum induced anemia and it significantly ameliorates hepato-renal toxicity and reduces the elevated CRP level and monocytes and leukocytes counts encountered after aluminum exposure. Aluminum alone caused significant anemia‚ elevation of BUN‚ CRP‚ leukocytes and monocytes counts and liver enzymes‚ ALT and AST‚ and deceased creatinine clearance. Chemical analysis and antioxidant study showed that it contains fat
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Alloy Wheel Powder Coating Importance of Powder Coating The process of powder coating is significant for making colour changes as well as to match the existing finish of the wheel. We at Alloy Wheel Refurbishment Services use the latest technology to provide the best services for long-term benefits and client’s satisfaction. In actuality‚ Powder Coating is considered to be a better and wiser choice compared to spray paint since the powder coating is not only durable but also it provides you with
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iodine produced from potassium iodide by manganese(III) hydroxide. 2Mn(OH)3(s) + 2I-(aq) + 6 H+(aq) －－＞ 2Mn2+(aq) + I2(aq) + 6H2O(l) Sodium thiosulphate is used as the titrant. Success of the method is critically dependent upon the manner in which the sample is manipulated. At all stages‚ every method must be made to assure that oxygen is neither introduced to nor lost from the sample. Furthermore‚ the sample must be free of any solutes that will oxidize iodide or reduce iodine. Chemicals:
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the solute and the solvent. b. Classify the solute and the solvent as polar‚ nonpolar or ionic. c. Identify the solute-solute‚ solvent-solvent and solute-solvent attractive forces. Lewis Structures Solutes: NaCl Naphthalene Glycerol Potassium Iodide Iodine Crystal Solvents: Distilled water Ethyl Alcohol Toluene Solutions Polar‚ Non-Polar or Ionic Attractive Forces NaCl + Distilled Water Solute NaCl Solute-solute Solute-solvent Solvent Distilled water Solvent-solvent NaCl
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light (put in a dark place) will not decompose. Theory: Equipment: * 4 x petri dishes * 1 x glass stirring rod * 0.1 mol/L silver nitrate in a dropper bottle * 0.1 mol/L Sodium chloride in a dropper bottle * 0.1 mol/L Sodium iodide in a dropper bottle Method: 1. Ensure you are wearing safety glasses 2. Take the petri dishes and label then 1‚ 2‚ 3‚ and 4. 3. Add 20 drops of silver nitrate solution to each petri dish. 4. Add 20 drops of sodium chloride to petri
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DEVELOPMENT OF CORROSION RESISTANT GALVANISING ALLOYS By BO ZHANG A thesis submitted to The University of Birmingham for the degree of DOCTOR OF PHILOSOPHY Metallurgy and Materials School of Engineering The University of Birmingham July 2005 University of Birmingham Research Archive e-theses repository This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as
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Iron (III) and copper (II) sulfate solution 2. Fill a small test tube halfway with copper (II) sulfate solution. Add a 2.0 gram iron rod to the solution and observe the reaction. 3. 4. 5. Lead (II) nitrate and potassium iodide solutions 6. Pour about 2.0 mL of lead (II) nitrate into the test tube. Add 5 to 10 drops of potassium iodide solution to the test tube and record your observations of the reaction. 7. 8. 9. Magnesium metal and hydrochloric acid solution 10. Place one scoop of magnesium turnings into the test tube
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Elena Chen CH 221-227 November 3rd‚ 2009 Lab Report #3: Copper Cycle Abstract: The purpose of the experiment is to cycle solid copper through a series of five reactions. At different stages of the cycle‚ copper was present in different forms. First reaction involves reaction between the copper and nitric acid‚ and copper changed from elemental state to an aqueous. The second reaction converted the aqueous Cu2+ into the solid copper (2) hydroxide. In the third reaction Cu(OH)2 decomposed into
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Destin Brass Products Destin Brass produces three products used for water purification systems: valves‚ pumps and flow controllers. They are seeing high competition in the pumps market while competitors are reducing the prices on pumps. Because they do not have any design advantages to their product‚ they feel they need to follow the market and lower their prices as well. A meeting was held to discuss the declining profits and a proposal to change their overhead allocation method was proposed
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