{"id":{"repo_id":"greece","oai_identifier":"oai:10442/1361"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/1361","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΜΕΛΕΤΗ ΠΡΟΚΑΤΕΡΓΑΣΙΩΝ ΓΙΑ ΤΗ ΒΕΛΤΙΩΣΗ ΤΗΣ ΟΞΙΝΗΣ ΥΔΡΟΛΥΣΗΣ ΚΥΤΤΑΡΙΝΟΥΧΩΝ ΥΛΙΚΩΝ","abstract":"IN THE PRESENT THESIS A STUDY OF THE ACID HYDROLYSIS OF PRETREATED AS WELL AS NOT PRETREATED CELLULOSIC MATERIALS TOOK PLACE, WITH DEVELOPMENT AND PROOF OF A NEW MODEL OF ACID HYDROLYSIS AND THE USE OF IT FOR THE EVALUATION OF PHYSICAL AND CHEMICAL PRETREATMENTS FOR THE IMPROVEMENT OF AND HYDROLYSIS OF CELLULOSIC MATERIALS. A FOUR-STEP PSEUDO-FIRST ORDER KINETIC MODEL WAS DEVELOPED, AND WAS USED TO DESCRIBE THE ACID HYDROLYSIS OF RESISTING IN HYDROLYSIS AND EASILY HYDROLYSABLE POLYSACCHARIDES. THE MODEL TAKES INTO ACCOUNT THE DEGREE OF CRYSTALLINITY OF CELLULOSE AND THE PRESENCE OF WATER SOLUBLE OLIGOSACCHARIDES IN THE HYDROLYSATE.","abstract_html":"IN THE PRESENT THESIS A STUDY OF THE ACID HYDROLYSIS OF PRETREATED AS WELL AS NOT PRETREATED CELLULOSIC MATERIALS TOOK PLACE, WITH DEVELOPMENT AND PROOF OF A NEW MODEL OF ACID HYDROLYSIS AND THE USE OF IT FOR THE EVALUATION OF PHYSICAL AND CHEMICAL PRETREATMENTS FOR THE IMPROVEMENT OF AND HYDROLYSIS OF CELLULOSIC MATERIALS. A FOUR-STEP PSEUDO-FIRST ORDER KINETIC MODEL WAS DEVELOPED, AND WAS USED TO DESCRIBE THE ACID HYDROLYSIS OF RESISTING IN HYDROLYSIS AND EASILY HYDROLYSABLE POLYSACCHARIDES. THE MODEL TAKES INTO ACCOUNT THE DEGREE OF CRYSTALLINITY OF CELLULOSE AND THE PRESENCE OF WATER SOLUBLE OLIGOSACCHARIDES IN THE HYDROLYSATE.","abstract_has_math":false,"creators":["Σιδηράς, Δημήτριος"],"institution":"Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1990,"date_issued":"1990","date_published":"1990","updated_at":"2026-07-24T02:24:52Z","subjects":["ACID HYDROLYSIS","CELLULOSE CRYSTALLINITY","Cellulosic materials","Kinetic model","PRETREATMENTS","Wheat straw","Άχυρο σιταριού","Κινητικό μοντέλο","ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑ ΚΥΤΤΑΡΙΝΗΣ","Κυτταρινούχα υλικά","ΟΞΙΝΗ ΥΔΡΟΛΥΣΗ","ΠΡΟΚΑΤΕΡΓΑΣΙΕΣ","Engineering and Technology","Chemical Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Χημικού Μηχανικού"],"languages":["gre"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1361"],"render_values":[{"text":"10.12681/eadd/1361","href":"https://doi.org/10.12681/eadd/1361","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/1361","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Σιδηράς, Δημήτριος"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1990"]},{"key":"dc:publisher","label":"Institution","values":["Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)","National Technical University of Athens (NTUA)"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["ACID HYDROLYSIS","CELLULOSE CRYSTALLINITY","Cellulosic materials","Kinetic model","PRETREATMENTS","Wheat straw","Άχυρο σιταριού","Κινητικό μοντέλο","ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑ ΚΥΤΤΑΡΙΝΗΣ","Κυτταρινούχα υλικά","ΟΞΙΝΗ ΥΔΡΟΛΥΣΗ","ΠΡΟΚΑΤΕΡΓΑΣΙΕΣ","Engineering and Technology","Chemical Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Χημικού Μηχανικού"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["gre"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1361","http://hdl.handle.net/10442/hedi/1361"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["IN THE PRESENT THESIS A STUDY OF THE ACID HYDROLYSIS OF PRETREATED AS WELL AS NOT PRETREATED CELLULOSIC MATERIALS TOOK PLACE, WITH DEVELOPMENT AND PROOF OF A NEW MODEL OF ACID HYDROLYSIS AND THE USE OF IT FOR THE EVALUATION OF PHYSICAL AND CHEMICAL PRETREATMENTS FOR THE IMPROVEMENT OF AND HYDROLYSIS OF CELLULOSIC MATERIALS. A FOUR-STEP PSEUDO-FIRST ORDER KINETIC MODEL WAS DEVELOPED, AND WAS USED TO DESCRIBE THE ACID HYDROLYSIS OF RESISTING IN HYDROLYSIS AND EASILY HYDROLYSABLE POLYSACCHARIDES. THE MODEL TAKES INTO ACCOUNT THE DEGREE OF CRYSTALLINITY OF CELLULOSE AND THE PRESENCE OF WATER SOLUBLE OLIGOSACCHARIDES IN THE HYDROLYSATE.","ΣΤΗΝ ΠΑΡΟΥΣΑ ΔΙΑΤΡΙΒΗ ΕΓΙΝΕ ΜΕΛΕΤΗ ΤΗΣ ΟΞΙΝΗΣ ΥΔΡΟΛΥΣΗΣ ΠΡΟΚΑΤΕΡΓΑΣΜΕΝΟΥ, ΚΑΙ ΜΗ, ΚΥΤΤΑΡΙΝΟΥΧΟΥ ΥΛΙΚΟΥ, ΜΕ ΑΝΑΠΤΥΞΗ ΚΑΙ ΤΕΚΜΗΡΙΩΣΗ ΕΝΟΣ ΝΕΟΥ ΚΙΝΗΤΙΚΟΥ ΜΟΝΤΕΛΟΥ ΟΞΙΝΗΣ ΥΔΡΟΛΥΣΗΣ, ΚΑΙ ΧΡΗΣΙΜΟΠΟΙΗΣΗ ΤΟΥ ΓΙΑ ΤΗΝ ΑΞΙΟΛΟΓΗΣΗ ΦΥΣΙΚΩΝ ΚΑΙ ΧΗΜΙΚΩΝ ΠΡΟΚΑΤΕΡΓΑΣΙΩΝ, ΓΙΑ ΤΗΝ ΒΕΛΤΙΩΣΗ ΤΗΣ ΟΞΙΝΗΣ ΥΔΡΟΛΥΣΗΣ ΤΩΝ ΚΥΤΤΑΡΙΝΟΥΧΩΝ ΥΛΙΚΩΝ. ΑΝΑΠΤΥΧΘΗΚΕ ΕΝΑ ΨΕΥΔΟ-ΠΡΩΤΗΣ ΤΑΞΗΣ ΚΙΝΗΤΙΚΟ ΜΟΝΤΕΛΟ ΤΕΣΣΑΡΩΝ ΣΤΑΔΙΩΝ, ΤΟ ΟΠΟΙΟ ΧΡΗΣΙΜΟΠΟΙΗΘΗΚΕ ΓΙΑ ΝΑ ΠΕΡΙΓΡΑΨΕΙ ΤΗΝ ΟΞΙΝΗ ΥΔΡΟΛΥΣΗ ΤΩΝ ΑΝΘΙΣΤΑΜΕΝΩΝ ΣΤΗΝ ΥΔΡΟΛΥΣΗ ΚΑΙ ΤΩΝ ΕΥΚΟΛΑ ΥΔΡΟΛΥΟΜΕΝΩΝ ΠΟΛΥΣΑΚΧΑΡΙΤΩΝ, ΚΥΤΤΑΡΙΝΟΥΧΩΝ ΥΛΙΚΩΝ. ΤΟ ΜΟΝΤΕΛΟ ΣΥΜΠΕΡΙΛΑΜΒΑΝΕΙ ΤΟΝ ΒΑΘΜΟ ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑΣ ΤΗΣ ΚΥΤΤΑΡΙΝΗΣ ΚΑΘΩΣ ΚΑΙ ΤΟΥΣ ΥΔΑΤΟΔΙΑΛΥΤΟΥΣ ΟΛΙΓΟΣΑΚΧΑΡΙΤΕΣ ΣΤΟ ΥΔΡΟΛΥΜΑ."]},{"key":"dc:title","label":"Title","values":["ΜΕΛΕΤΗ ΠΡΟΚΑΤΕΡΓΑΣΙΩΝ ΓΙΑ ΤΗ ΒΕΛΤΙΩΣΗ ΤΗΣ ΟΞΙΝΗΣ ΥΔΡΟΛΥΣΗΣ ΚΥΤΤΑΡΙΝΟΥΧΩΝ ΥΛΙΚΩΝ","STUDY ON THE PRETREATMENTS FOR THE IMPROVMENT OF THE ACID HYDROLYSIS OF THE CELLULOSIC MATERIALS"]}]}],"canonical_facts":{"dc:creator":["Σιδηράς, Δημήτριος"],"dc:date":["1990"],"dc:description":["IN THE PRESENT THESIS A STUDY OF THE ACID HYDROLYSIS OF PRETREATED AS WELL AS NOT PRETREATED CELLULOSIC MATERIALS TOOK PLACE, WITH DEVELOPMENT AND PROOF OF A NEW MODEL OF ACID HYDROLYSIS AND THE USE OF IT FOR THE EVALUATION OF PHYSICAL AND CHEMICAL PRETREATMENTS FOR THE IMPROVEMENT OF AND HYDROLYSIS OF CELLULOSIC MATERIALS. A FOUR-STEP PSEUDO-FIRST ORDER KINETIC MODEL WAS DEVELOPED, AND WAS USED TO DESCRIBE THE ACID HYDROLYSIS OF RESISTING IN HYDROLYSIS AND EASILY HYDROLYSABLE POLYSACCHARIDES. THE MODEL TAKES INTO ACCOUNT THE DEGREE OF CRYSTALLINITY OF CELLULOSE AND THE PRESENCE OF WATER SOLUBLE OLIGOSACCHARIDES IN THE HYDROLYSATE.","ΣΤΗΝ ΠΑΡΟΥΣΑ ΔΙΑΤΡΙΒΗ ΕΓΙΝΕ ΜΕΛΕΤΗ ΤΗΣ ΟΞΙΝΗΣ ΥΔΡΟΛΥΣΗΣ ΠΡΟΚΑΤΕΡΓΑΣΜΕΝΟΥ, ΚΑΙ ΜΗ, ΚΥΤΤΑΡΙΝΟΥΧΟΥ ΥΛΙΚΟΥ, ΜΕ ΑΝΑΠΤΥΞΗ ΚΑΙ ΤΕΚΜΗΡΙΩΣΗ ΕΝΟΣ ΝΕΟΥ ΚΙΝΗΤΙΚΟΥ ΜΟΝΤΕΛΟΥ ΟΞΙΝΗΣ ΥΔΡΟΛΥΣΗΣ, ΚΑΙ ΧΡΗΣΙΜΟΠΟΙΗΣΗ ΤΟΥ ΓΙΑ ΤΗΝ ΑΞΙΟΛΟΓΗΣΗ ΦΥΣΙΚΩΝ ΚΑΙ ΧΗΜΙΚΩΝ ΠΡΟΚΑΤΕΡΓΑΣΙΩΝ, ΓΙΑ ΤΗΝ ΒΕΛΤΙΩΣΗ ΤΗΣ ΟΞΙΝΗΣ ΥΔΡΟΛΥΣΗΣ ΤΩΝ ΚΥΤΤΑΡΙΝΟΥΧΩΝ ΥΛΙΚΩΝ. ΑΝΑΠΤΥΧΘΗΚΕ ΕΝΑ ΨΕΥΔΟ-ΠΡΩΤΗΣ ΤΑΞΗΣ ΚΙΝΗΤΙΚΟ ΜΟΝΤΕΛΟ ΤΕΣΣΑΡΩΝ ΣΤΑΔΙΩΝ, ΤΟ ΟΠΟΙΟ ΧΡΗΣΙΜΟΠΟΙΗΘΗΚΕ ΓΙΑ ΝΑ ΠΕΡΙΓΡΑΨΕΙ ΤΗΝ ΟΞΙΝΗ ΥΔΡΟΛΥΣΗ ΤΩΝ ΑΝΘΙΣΤΑΜΕΝΩΝ ΣΤΗΝ ΥΔΡΟΛΥΣΗ ΚΑΙ ΤΩΝ ΕΥΚΟΛΑ ΥΔΡΟΛΥΟΜΕΝΩΝ ΠΟΛΥΣΑΚΧΑΡΙΤΩΝ, ΚΥΤΤΑΡΙΝΟΥΧΩΝ ΥΛΙΚΩΝ. ΤΟ ΜΟΝΤΕΛΟ ΣΥΜΠΕΡΙΛΑΜΒΑΝΕΙ ΤΟΝ ΒΑΘΜΟ ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑΣ ΤΗΣ ΚΥΤΤΑΡΙΝΗΣ ΚΑΘΩΣ ΚΑΙ ΤΟΥΣ ΥΔΑΤΟΔΙΑΛΥΤΟΥΣ ΟΛΙΓΟΣΑΚΧΑΡΙΤΕΣ ΣΤΟ ΥΔΡΟΛΥΜΑ."],"dc:identifier":["10.12681/eadd/1361","http://hdl.handle.net/10442/hedi/1361"],"dc:language":["gre"],"dc:publisher":["Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)","National Technical University of Athens (NTUA)"],"dc:subject":["ACID HYDROLYSIS","CELLULOSE CRYSTALLINITY","Cellulosic materials","Kinetic model","PRETREATMENTS","Wheat straw","Άχυρο σιταριού","Κινητικό μοντέλο","ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑ ΚΥΤΤΑΡΙΝΗΣ","Κυτταρινούχα υλικά","ΟΞΙΝΗ ΥΔΡΟΛΥΣΗ","ΠΡΟΚΑΤΕΡΓΑΣΙΕΣ","Engineering and Technology","Chemical Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Χημικού Μηχανικού"],"dc:title":["ΜΕΛΕΤΗ ΠΡΟΚΑΤΕΡΓΑΣΙΩΝ ΓΙΑ ΤΗ ΒΕΛΤΙΩΣΗ ΤΗΣ ΟΞΙΝΗΣ ΥΔΡΟΛΥΣΗΣ ΚΥΤΤΑΡΙΝΟΥΧΩΝ ΥΛΙΚΩΝ","STUDY ON THE PRETREATMENTS FOR THE IMPROVMENT OF THE ACID HYDROLYSIS OF THE CELLULOSIC MATERIALS"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:24:52Z"}