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[pic] Pt102 assignment Physical pharmacy part coefficient Name :Mohamed amgad ID:123451 for Dr .Ahmad Ismail knowledgeableness General Definition of sectionalisation Coefficient: Partition coefficient is the ratio of the ingress of a chemical species adsorbed or dissolved by iodin phase to the concentration of the species in the other phase. The air division coefficient for to each one of the three perfect acids, as defined in the equivalence: K = [org. acid in vegetable anele] / [org. acid in water] (by mass) The effects of pH, temperature and thoroughgoing acid concentration on the partition coefficients for short-chain constitutional acid were measured in a approximative anele / water system. Temperature of 25 70 C, pH value of 2.0 12.0 and acid concentration of 10-1000 mg/L were studied. Formic, Acetic and Propionic acids are subst dictates for microbial change state of oil reservoirs. The enormous piece ( 85+%) of these acids was dissolved in the aqueous phase. The log of the partition coefficient K increased approximately linearly with the number of degree centigrade atoms in the acid. Problems of native Acids: The presence of these acids can accelerate the rate of eating away of well tabular. They also contribute in the souring of oil reservoirs due to their consumption by sulfate trim kill bacteria (SRB). Also, these organisms can proliferate and block up the sway pores in the reservoir, hence causing a loss of injectivity. complete acids are readily available carbon sources for sulfate diminution bacteria (SRB). At low pH crude oil may provide a source of organic acids. Short-chain organic acids are favored substrates for metabolism by SRB. Instrumentation: The compend for these organic acids was performed using the Capillary ionophoresis Technique, which provides a quick analytic thinking of these low molecular organic speci es. Capillary Electrophoresis (CE): ! A separation technique in which a hear is introduced into a capillary...If you want to get a full essay, pose it on our website: OrderEssay.net

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