cycle. A vapor-compression water chiller comprises the 4 major components of the vapor-compression refrigeration cycle (compressor‚ evaporator‚ condenser‚ and some form of metering device). These machines can implement a variety of refrigerants. Adsorption chillers use municipal water as the refrigerant and benign silica gel as the desiccant. Absorption chillers utilize water as the refrigerant and rely on the strong affinity between the water and a lithium bromide solution to achieve a refrigeration
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Indian Journal of Chemistry Vol. 49A‚ December 2010‚ pp. 1593-1600 Characterization and photocatalytic activity of SiO2-TiO2 mixed oxide nanoparticles prepared by sol-gel method Ali Mahyar*‚ Mohammad Ali Behnajady & Naser Modirshahla Department of Applied Chemistry‚ Faculty of Science‚ Islamic Azad University‚ Tabriz Branch‚ Tabriz‚ Iran Email: alimahyar@hotmail.com Received 9 August 2010; revised and accepted 15 November 2010 SiO2-TiO2 mixed oxides have been prepared by sol-gel technique from titanium
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ion-exchange‚ adsorption‚ floatation‚ filtering and other processes that accomplish removal of dissolved and undisclosed substances without necessarily changing their chemical structure. The wastewater Treatment Plant (WWTP or STP) possesses conventional methods like primary treatment‚ secondary treatment and tertiary treatment followed by ozonation method. Later‚ for the river water treatment which contains preozonation‚ flocculation‚ chlorination filtration / aeration‚ adsorption and pH correction
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Direction: Read the article below. Answer the questions beside the article by checking the number of the sentence where you can find the answer. Then‚ write the specific answer on the space provided for. Good luck!!! CHROMATOGRAPHY (By: Mayflor Markusic) KALIKASAN: Everyday Science in Action Volume 4 No. 1; pages 22-24 a) What is chromatography? 1 2 3 4 ____________________________________________________________ ________________ b) Give examples of mixtures
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stand filter paper stirring rod charcoal sand foul water sample rubber tubing pinch clamp iron ring plastic cup scoop Objective/Purpose: To purify a sample of foul water using oil-water separation‚ sand filtration‚ and charcoal adsorption and filtration. Procedure: First‚ you have the measure the foul water sample and record it in your data table. You have to record what you see and smell before you filter anything out. Then you have the separate the oil from the water using the
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http://www.solarpanelsplus.com/commercial/solar-cooling/ 3. Unknown Author‚ June‚ 2012. Solar Air Conditioning‚ Solar Powered Air Conditioning‚ Machine-History.Com‚ June 30‚ 2012‚ http://machine-history.com/Solar%20Powered%20Air%20Conditioning#Adsorption: Activated Carbon/Methanol 4. Unknown Author‚ June‚ 2012. Images for solar power air conditioning. Bing.com‚ June‚ 30 2012. http://www.bing.com/images/search?q=solar+pawered+ac%2fheat&qpvt=solar+pawered+ac%2fheat&FORM=IGRE
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Chapter 1 THE PROBLEM 1.1. Introduction Heavy metals such as lead‚ zinc‚ copper‚ can often be found in industrial wastewater and their discharge to the environment poses a serious threat due to their acute toxicity to aquatic and terrestrial life which includes humans. As a result of increasing industrialization more heavy metals are continually released to the environment and this has prompted environmental engineers and scientists to think of better methods by which heavy
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CHAPTER I Introduction Over 70% of the planet is covered by water. (75% of that is salt water‚ only leaving a 25% as fresh water which can be used for consumption. 70% of the fresh water of our planet is still frozen in the icecaps of Antarctica and Greenland; while the remaining percentage is present as soil moisture‚ or it lies underground as groundwater. Main Problem How can the seawater be utilized for the consumption of different organisms? Sub problems How will the results of the said
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The photocatalytic activity obtained indicates that the HCC-TiO2 activity is attributed to the increased phenol adsorption by hydrotalcite transferring it to the active photocatalytic phase of the impregnated TiO2 particle‚ while better results are obtained in HSC-TiO2 due to greater impregnation of the catalyst on the surface of the calcined hydrotalcite‚ reducing
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phase (column)‚ mobile phase (eluent) and type of separation occurs within the column. column The simplified version on various types is given as follow: Chromatography Liquid Chromatography HPLC Adsorption Partition Ion Exchange TLC/PC Adsorption SEC GPC GFC Gas Chromatography GSC Adsorption GLC Partition Apart from normal liquids as the mobile phases‚ supercritical fluids such as liquid CO2 can also be used as mobile phase and the technique is designated as Supercritical Fluid Chromatography
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