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[pic] Pt102 assignment Physical pharmacy part coefficient Name :Mohamed amgad ID:123451 for Dr .Ahmad Ismail world General Definition of sectionalisation Coefficient: Partition coefficient is the ratio of the immersion of a chemical species adsorbed or dissolved by one phase to the concentration of the species in the other phase. The part coefficient for severally of the three perfect acids, as defined in the equivalence: K = [org. acid in vegetable oil] / [org. acid in water] (by mass) The effects of pH, temperature and constitutional acid concentration on the partition coefficients for short-chain organic acid were measured in a rasping oil / 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 circumstances (85+%) of these acids was dissol ved 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 follow through bacteria (SRB). Also, these organisms can proliferate and block up the shudder pores in the reservoir, hence causing a loss of injectivity. constitutive(a) acids are readily available carbon sources for sulfate reduction bacteria (SRB). At low pH crude oil may provide a source of organic acids. Short-chain organic acids are favore! d substrates for metabolism by SRB. Instrumentation: The compend for these organic acids was performed using the Capillary ionophoresis Technique, which provides a quick compend of these low molecular organic species. 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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