Hydrophobic adsorption of itaconic and fumaric acid on high silica zeolites

Κηπουρός, Ιώαννης-Παναγιώτης; Kipouros, Ioannis-Panagiotis

dc.contributor.author	Κηπουρός, Ιώαννης-Παναγιώτης	el
dc.contributor.author	Kipouros, Ioannis-Panagiotis	en
dc.date.accessioned	2016-10-12T08:39:04Z
dc.date.available	2016-10-12T08:39:04Z
dc.date.issued	2016-10-12
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/43787
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.6109
dc.description	Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία. Διεπιστημονικό-Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.)	en
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc/3.0/gr/	*
dc.subject	Προσρόφηση	el
dc.subject	Ιτακονικό οξύ	el
dc.subject	Φουμαρικό οξύ	el
dc.subject	Ζεόλιθος	el
dc.subject	Ισόθερμες ρόφησης	el
dc.subject	Fumaric acid	en
dc.subject	Hydrophobic adsorption	en
dc.subject	Itaconic acid	en
dc.subject	adsorption isotherm	en
dc.subject	high silica zeolite	en
dc.title	Hydrophobic adsorption of itaconic and fumaric acid on high silica zeolites	en
dc.title	Υδρόφοβη προσρόφηση ιτακονικού και φουμαρικού οξέος σε ζεόλιθους με υψηλή αναλογία σε πυρίτιο
heal.type	bachelorThesis
heal.classification	Βιοχημική Μηχανική	el
heal.classification	Biochemical Engineering	en
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2016-07-05
heal.abstract	The oil crisis in the 70’s and more recently the surging oil prices and concerns about the depleting petroleum reserves, have prompted the development of bio – production processes for bio – based chemical feedstocks as an alternative to petrochemically – based ones. Many dicarboxylic acids, including fumaric acid, malic acid, succinic acid and itaconic acid have been identified as top building-block chemicals that potentially can be produced from abundant renewable biomass [2]. Adsorption is a chemical process considered for their purification. Modelling of experimental adsorption isotherm data is an indispensable tool to predict the nature and the mechanisms of adsorption, which, consequently, will lead to a significant improvement in the field of adsorption science. In this work six isotherm models, namely: Langmuir (single and double site), Freundlich, Sips, Toth, Redlich – Peterson, were investigated to correlate several experimental sets of adsorption data including four different compounds (itaconic, fumaric, malic, citric acid) at three different temperatures (25, 50 and 70oC) on two different zeolites, CBV28014 and CP811C-300. In this work the applicability of adsorption of these compounds on zeolites was tested as a means of removal from aqueous phase with the aim of extending to fermentation broths and other applications. Only nonlinear regression methods were applied. Sum of squared errors of prediction (SSE) was used to determine the best – fit parameters to every model investigated and five error functions, adjusted correlation coefficient (R2), nonlinear chi-square test (χ2), hybrid fractional error function (HYBRID), average relative error (ARE) and Marquardt’s percent standard deviation (MPSD) were used to evaluate the best – fitting equilibrium model to the experimental data. The modeling results showed that non-linear Sips equation model could fit the data better than others, with relatively higher R2 values and smaller (ARE), but that was not always the case. At certain cases, more than one model fit well enough, so a definite conclusion could be achieved by carrying out more experiments in the lowest, especially, concentration range for each compound.	en
heal.advisorName	Κοκόσης, Αντώνης	el
heal.committeeMemberName	Κοκόσης, Αντώνης	el
heal.committeeMemberName	Βουτσάς, Επαμεινώνδας	el
heal.committeeMemberName	Μπουρουσιάν, Μιρτάτ	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Χημικών Μηχανικών. Τομέας Ανάλυσης, Σχεδιασμού και Ανάπτυξης Διεργασιών και Συστημάτων (ΙΙ)	el
heal.academicPublisherID	ntua
heal.numberOfPages	60
heal.fullTextAvailability	true