Exp # 2 showed that the presence of the bacterium and iron oxide in the reaction medium (E-Sh-Ox) promotes the disappearance of endosulfan but inhibits its hydrolysis (and thus its transformation into ES-diol ) susceptiblement by more effective adsorption phenomenon. It is observed in this case 89.45% α + β O disappeared for 33.92% of ES-diol product‚ 56% of ES α + β missing. However‚ by amending formate (carbon source and electron) to medium (one obtains E-Sh-Ox-f)‚ the production rate in ES-diol
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Laboratory Exercise #2 Pre Lab This lab will teach me how to use a spectrophotometer. The use of the spectrophotometer is to measure the concentration of solute. The solute being measured must be colored and is determined based on the adsorption of light photons on a wavelength. The spectrophotometer uses a beam of light that strikes the diffraction grating that basically forms of prism of light. Then only a specific wavelength of light shines through the spectrophotometer and interacts with
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nitrogen flow with temperature range of 30 to 900 oC. The textural properties were determined using nitrogen adsorption/desorption isotherms measured with a Quantachrome Autosorb iQ instrument at 77 K. Before each analysis‚ the samples were evacuated for 3 h at 200 oC under helium atmosphere. The BET surface area was calculated by the Brunauer-Emmett-Teller (BET) method based on adsorption data in the relative pressure (Ps/Po) range 0.05-0.30. The total pore volume was determined from the amount of
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Cebu Normal University Osmeña Boulevard‚ Cebu City The Effectiveness of Raw Sugarcane Bagasse as Oil Spill Sorbent In Partial Fulfillment of the Requirements for Bioresearch January 2014 Researchers: Jacobe‚ Sergio III T. Ranile‚ Jiferson C. Tañara‚ Vincent Paul S. Research Instructor: Mr. Dexter S. Ontoy Chapter I INTRODUCTION The Problem and its Setting One of the main sources of water pollution is crude oil spill. Oil and petroleum products can pollute sources of water such as seas‚ oceans
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pores are used as the entrance to the activated carbon‚ the meso pores for transportation and the micro pores for adsorption. Different types of Activated Carbons can be produced with specific characteristics depending upon the raw material and activation technique used in their production . Apelsa CCA-700 activated carbons are products that feature high capacity for contaminants adsorption. Manufactured from coconut shell they present an optimum micropore volume‚ which is ideal for small molecules
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Enzyme Immobilization Methods Covalent Binding: Covalent binding is a conventional method for immobilization; it can be achieved by direct attachment with the enzyme and the material through the covalent linkage [37]. The covalent linkage is strong and stable and the support material of enzymes includes polyacrylamide‚ porous glass‚ agarose and porous silica [38]. Covalent method of immobilization is mainly used when a reaction process does not require enzyme in the product‚ this is the criteria
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Immobilization of Enzymes And Their Applications By‚ Shudhangshu Shekhar Kundu Introduction: What an enzyme? Enzymes are protein molecules‚ which serve to accelerate the chemical reactions of living cells (often by several orders of magnitude). Without enzymes‚ most biochemical reactions would be too slow to even carry out life processes
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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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