SEWAGE TREATMENT Sewage is a mixture of domestic and industrial wastes. It is more than 99% water‚ but the remainder contains some ions‚ suspended solids and harmful bacteria that must be removed before the water is released into the sea. The treatment of wastewater is divided into three phases: pretreatment‚ primary treatment and secondary treatment. Pretreatment Large solids (i.e. those with a diameter of more than 2cm) and grit (heavy solids) are removed by screening. These are disposed of in
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MIXTURES‚ SOLUTIONS‚ SUSPENSIONS AND COLLOIDS MIXTURES A mixture is a combination made up of two or more different substances which are mixed but are not chemically bonded. There are also types of mixtures such as homogeneous mixtures and heterogeneous mixtures. SOLUTIONS A solution is defined as a homogeneous mixture composed of a solute; a substance dissolved into another substance known as a solvent. They can also be defined as groups of molecules that are mixed up completely in even
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Food Chemistry journal homepage: www.elsevier.com/locate/foodchem Analytical Methods Determination of volatile N-nitrosamines in meat products by microwave-assisted extraction coupled with dispersive micro solid-phase extraction and gas chromatography – Chemical ionisation mass spectrometry Man-Chun Huang‚ Hsin-Chang Chen‚ Ssu-Chieh Fu‚ Wang-Hsien Ding ⇑ Department of Chemistry‚ National Central University‚ Chung-Li 320‚ Taiwan a r t i c l e i n f o Article history: Received 21
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Title: Competing Nucleophiles (Exp 24‚ pp 211-221‚ pp 808-823‚ pp 836-842) Purpose: The purpose of this experiment is to determine the nucleophilic strength of chloride and bromide ions as it reacts with 1-butanol (n-butyl) and 2-methyl-2-propanol (t-butyl alcohol) under SN1 and SN2 conditions. Method: 40 g of ice and approximately 30 ml of sulfuric acid is cautiously added to a 100 mL beaker respectively. Weigh 7.6 g of ammonium chloride and 14.0 g of ammonium bromide and place it in
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1) Demonstrate understanding of the terms atom and molecule. Atom= Smallest Unit of Matter Molecule= 2 or more atoms chemically bonded. 2) Describe paper chromatography. 3) Interpret simple chromatograms. A method used to separate a Solution‚ using a Paper and a beaker of water. The Substances in the Paper go up depending on their Mass. We can say that a Solution has the same substance as another solution because they form a line of the same height. 4) Describe methods of separation
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(recycled). Heat energy is produced as a by-product b/c so it is used to make steam in the exchanger saves money + energy 4) The product is analysed to monitor purity. Products made from synthesis Basic organics Petrochemicals Pigments‚ paint‚ dyes Pharmaceutical Speciality chemicals Innovations in green chemistry 1B Regulations are put in place for the storing and transporting of chemicals. Hazard symbols and sealed containers prevent harm from
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Performed on: Wednesday‚ May 8th‚ 2013 | | | 5/15/2013 | | Introduction: The goal of this experiment was to identify an unknown analgesic drug through the use of thin-layer chromatography. The drugs used were‚ Unknown #1‚ caffeine‚ aspirin‚ and acetaminophen. Thin-Layer Chromatography is a technique for identifying substances using a mobile phase (developing solvent) that draws up through a stationary phase (TLC plate) and marks spots of differing distances for differing substances
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Matter Lab • Perform Paper Chromatography Lab Turn-in: 1) Changes: Physical or Chemical Lab - Completed Procedure / Observations‚ questions‚ and a written description of most important concept that you learned in the discussion section. 2) Special Physical Properties of Matter Lab – Completed Procedure / Observations‚ questions‚ and a written description of most important concept that you learned in the discussion section. 3) Paper Chromatography Lab – Completed Procedure / Observations
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fatty acids. • Spectroscopic Techniques: Structural determination of an Organic compound by using UV & Visible ‚ IR ‚ NMR ‚ MASS techniques. • Chromatographic Techniques: Paper‚ Column ‚ Gas-Liquid chromatography ‚ High performance liquid chromatography etc. Computational Skills: Operating Systems : Win XP‚ 2000‚ 98‚ Languages : C‚ C++‚ Packages : Ms-Office. Soft Skills: 1. Good communication
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References: Bradford‚ M. M. (1976). A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal. Biochem. 72: 248-254. Laemmli‚U.K. (1970).Cleavage of structural proteins during the assembly of the head of bacteriophageT4 (Nature‚ 227 (5259)‚ pp.680685. Cited90650timesdoi: 10.1038/227680a0 Moyers‚ G Oakley‚B.R.‚ Kirsch‚D.R.‚ Morris
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