application of genetic programming to modeling and prediction of activity coefficient ratio of electrolytes in aqueous electrolyte solution containing amino acids

Authors

mahdi zaeifi yamchi

majid abdouss

hamid modarress

abstract

genetic programming (gp) is one of the computer algorithms in the family of evolutionary-computational methods, which have been shown to provide reliable solutions to complex optimization problems. the genetic programming under discussion in this work relies on tree-like building blocks, and thus supports process modeling with varying structure. in this paper the systems containing amino acids + water + one electrolyte (nacl, kcl, nabr, kbr) are modeled by gp that can predict the mean ionic activity coefficient ratio of electrolytes in presence and in absence of amino acid in different mixtures better than the common polynomial equations proposed for this kind of predictions. a set of 750 data points was used for model training and the remaining 105 data points were used for model validation. the root mean square deviation (rmsd) of the designed gp model in prediction of the mean ionic activity coefficient ratio of electrolytes is less than 0.0394 and proves the effectiveness of the gp in correlation and prediction of activity coefficients in the studied mixtures.

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Journal title:
iranian journal of chemistry and chemical engineering (ijcce)

Publisher: iranian institute of research and development in chemical industries (irdci)-acecr

ISSN 1021-9986

volume 28

issue 3 2009

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