{"id":{"repo_id":"greece","oai_identifier":"oai:10442/1422"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/1422","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΜΕΛΕΤΗ ΤΟΥ ΜΗΧΑΝΙΣΜΟΥ ΠΡΟΚΑΤΕΡΓΑΣΙΑΣ ΓΙΑ ΤΗΝ ΜΕΤΑΤΡΟΠΗ ΤΗΣ ΒΙΟΜΑΖΑΣ ΣΕ ΚΑΥΣΙΜΑ ΚΑΙ ΧΗΜΙΚΑ: ΕΠΙΔΡΑΣΗ ΣΤΗ ΣΤΕΡΕΑ ΦΑΣΗ","abstract":"THE EFFECTS OF PHYSICAL AND CHEMICAL PRETREATMENTS ON THE PARTICLE SIZE, SPECIFIC SURFACE AREA, CRYSTALLINITY INDEX, CHEMICAL COMPOSITION, DENSITY OF WHEAT STRAW IS EXAMINED. THE PHYSICAL PRETREATMENTS STUDIED WERE HAMMER - AND BALL-MILLING. THE CHEMICAL PRETREATMENTS UTILIZED WERE DELIGNIFICATIONS WITH AQUEOUS ALKALINE SOLUTIONS (NAOH, KOH, NA2CO3) AND ALCOHOL-WATER MIXTURES (METHANOL, ETHANOL, ISOPROPANOL, N-BUTANOL). THE EFFECT OF PRETREATMENTS ON THERMOCHEMICAL CONVERSION TO CHARCOAL, ON ENZYMIC HYDROLYSIS WITH ASPERGILLUS NIGER, TRICHODERMA VIVIDE AND FUSARIUM OXYSPORUM CELLULASES AND ON BIOETHANOL PRODUCTION WITH F . OXYSPORUM CELLULASES AND ON BIOETHANOL PRODUCTION WITH F. OXYSPORUM WAS EVALUATED D.CONVERSION YIELDS ARE INVERSE LINEAR FUNCTIONS OF PARTICLE SIZE AND LINEAR FUNCTION OF DEGREE OF DELIGNIFICATION. SECOND ORDER CORRELATIONS WITH RESPECT TO CRYSTALLINITY INDEX AND LIGNIN CONTENT OF CONVERSION PARAMETERS ARE PROPOSED.","abstract_html":"THE EFFECTS OF PHYSICAL AND CHEMICAL PRETREATMENTS ON THE PARTICLE SIZE, SPECIFIC SURFACE AREA, CRYSTALLINITY INDEX, CHEMICAL COMPOSITION, DENSITY OF WHEAT STRAW IS EXAMINED. THE PHYSICAL PRETREATMENTS STUDIED WERE HAMMER - AND BALL-MILLING. THE CHEMICAL PRETREATMENTS UTILIZED WERE DELIGNIFICATIONS WITH AQUEOUS ALKALINE SOLUTIONS (NAOH, KOH, NA2CO3) AND ALCOHOL-WATER MIXTURES (METHANOL, ETHANOL, ISOPROPANOL, N-BUTANOL). THE EFFECT OF PRETREATMENTS ON THERMOCHEMICAL CONVERSION TO CHARCOAL, ON ENZYMIC HYDROLYSIS WITH ASPERGILLUS NIGER, TRICHODERMA VIVIDE AND FUSARIUM OXYSPORUM CELLULASES AND ON BIOETHANOL PRODUCTION WITH F . OXYSPORUM CELLULASES AND ON BIOETHANOL PRODUCTION WITH F. OXYSPORUM WAS EVALUATED D.CONVERSION YIELDS ARE INVERSE LINEAR FUNCTIONS OF PARTICLE SIZE AND LINEAR FUNCTION OF DEGREE OF DELIGNIFICATION. SECOND ORDER CORRELATIONS WITH RESPECT TO CRYSTALLINITY INDEX AND LIGNIN CONTENT OF CONVERSION PARAMETERS ARE PROPOSED.","abstract_has_math":false,"creators":["Koullas, Dimitrios","Κουλλάς, Δημήτριος"],"institution":"National Technical University of Athens (NTUA)","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":"2026-07-24T02:24:56Z","subjects":["ΑΛΕΣΗ ΣΕ ΣΦΑΙΡΟΜΥΛΟ/ΣΦΥΡΟΜΥΛΟ","ΑΠΟΛΙΓΝΙΝΩΣΗ ΑΧΥΡΟΥ (ΑΛΚΑΛΙΚΗ, ORGANOSOLV)","Βιοαιθανόλη","Βιοενέργεια","Βιομάζα","ΔΕΙΚΤΗΣ ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑΣ","ΕΝΖΥΜΙΚΗ ΥΔΡΟΛΥΣΗ (ΣΑΚΧΑΡΟΠΟΙΗΣΗ)","ΘΕΡΜΟΧΗΜΙΚΗ ΜΕΤΑΤΡΟΠΗ ΒΙΟΜΑΖΑΣ","ΠΡΟΚΑΤΕΡΓΑΣΙΕΣ ΛΙΓΝΟΚΥΤΤΑΡΙΝΟΥΧΩΝ","BAU-/HAMMELMILLING","Bioenergy","Bioethanol","Biomass","CRYSTALLINITY INDEX","ENZYMIC HYDROLYSIS (SACCHARIFICATION)","PRETREATMENT OF LIGNOCELLULOSICS","STRAW DELIGNIFICATION (ALKALINE, ORGASOLV)","THERMOCHEMICAL CONVERSION OF BIOMASS","TR VIRIDE, ASP. NIGER, F. OXYSPORUM CELLULASES","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Χημικού Μηχανικού","Engineering and Technology","Chemical Engineering"],"languages":["gre"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1422"],"render_values":[{"text":"10.12681/eadd/1422","href":"https://doi.org/10.12681/eadd/1422","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/1422","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Koullas, Dimitrios","Κουλλάς, Δημήτριος"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1990"]},{"key":"dc:publisher","label":"Institution","values":["National Technical University of Athens (NTUA)","Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["ΑΛΕΣΗ ΣΕ ΣΦΑΙΡΟΜΥΛΟ/ΣΦΥΡΟΜΥΛΟ","ΑΠΟΛΙΓΝΙΝΩΣΗ ΑΧΥΡΟΥ (ΑΛΚΑΛΙΚΗ, ORGANOSOLV)","Βιοαιθανόλη","Βιοενέργεια","Βιομάζα","ΔΕΙΚΤΗΣ ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑΣ","ΕΝΖΥΜΙΚΗ ΥΔΡΟΛΥΣΗ (ΣΑΚΧΑΡΟΠΟΙΗΣΗ)","ΘΕΡΜΟΧΗΜΙΚΗ ΜΕΤΑΤΡΟΠΗ ΒΙΟΜΑΖΑΣ","ΠΡΟΚΑΤΕΡΓΑΣΙΕΣ ΛΙΓΝΟΚΥΤΤΑΡΙΝΟΥΧΩΝ","BAU-/HAMMELMILLING","Bioenergy","Bioethanol","Biomass","CRYSTALLINITY INDEX","ENZYMIC HYDROLYSIS (SACCHARIFICATION)","PRETREATMENT OF LIGNOCELLULOSICS","STRAW DELIGNIFICATION (ALKALINE, ORGASOLV)","THERMOCHEMICAL CONVERSION OF BIOMASS","TR VIRIDE, ASP. NIGER, F. OXYSPORUM CELLULASES","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Χημικού Μηχανικού","Engineering and Technology","Chemical Engineering"]}]},{"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/1422","http://hdl.handle.net/10442/hedi/1422"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["THE EFFECTS OF PHYSICAL AND CHEMICAL PRETREATMENTS ON THE PARTICLE SIZE, SPECIFIC SURFACE AREA, CRYSTALLINITY INDEX, CHEMICAL COMPOSITION, DENSITY OF WHEAT STRAW IS EXAMINED. THE PHYSICAL PRETREATMENTS STUDIED WERE HAMMER - AND BALL-MILLING. THE CHEMICAL PRETREATMENTS UTILIZED WERE DELIGNIFICATIONS WITH AQUEOUS ALKALINE SOLUTIONS (NAOH, KOH, NA2CO3) AND ALCOHOL-WATER MIXTURES (METHANOL, ETHANOL, ISOPROPANOL, N-BUTANOL). THE EFFECT OF PRETREATMENTS ON THERMOCHEMICAL CONVERSION TO CHARCOAL, ON ENZYMIC HYDROLYSIS WITH ASPERGILLUS NIGER, TRICHODERMA VIVIDE AND FUSARIUM OXYSPORUM CELLULASES AND ON BIOETHANOL PRODUCTION WITH F . OXYSPORUM CELLULASES AND ON BIOETHANOL PRODUCTION WITH F. OXYSPORUM WAS EVALUATED D.CONVERSION YIELDS ARE INVERSE LINEAR FUNCTIONS OF PARTICLE SIZE AND LINEAR FUNCTION OF DEGREE OF DELIGNIFICATION. SECOND ORDER CORRELATIONS WITH RESPECT TO CRYSTALLINITY INDEX AND LIGNIN CONTENT OF CONVERSION PARAMETERS ARE PROPOSED.","ΕΞΕΤΑΣΘΗΚΕ Η ΕΠΙΔΡΑΣΗ ΦΥΣΙΚΩΝ ΚΑΙ ΧΗΜΙΚΩΝ ΠΡΟΚΑΤΕΡΓΑΣΙΩΝ ΣΤΟ ΜΕΓΕΘΟΣ, ΤΗΝ ΕΙΔΙΚΗ ΕΠΙΦΑΝΕΙΑ, ΤΟ ΔΕΙΚΤΗ ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑΣ, ΤΗ ΧΗΜΙΚΗ ΣΥΣΤΑΣΗ ΑΧΥΡΟΥ ΣΙΤΑΡΙΟΥ. ΤΙΣΦΥΣΙΚΕΣ ΠΡΟΚΑΤΕΡΓΑΣΙΕΣ ΑΠΟΤΕΛΕΣΑΝ Η ΑΛΕΣΗ ΣΕ ΣΦΥΡΟΜΥΛΟ ΚΑΙ ΣΕ ΣΦΑΙΡΟΜΥΛΟ. ΤΟ ΑΧΥΡΟ ΥΠΕΣΤΗ ΠΡΟΚΑΤΕΡΓΑΣΙΑ ΜΕ ΥΔΑΤΙΚΟ ΔΙΑΛΥΜΑ ΑΛΚΑΛΕΩΣ (ΝΑΟΗ, ΚΟΗ, NA2CO3)NAOH, KOH, NA2 'Η ΜΙΓΜΑ ΝΕΡΟΥ-ΑΛΚΟΟΛΗΣ (ΜΕΘΑΝΟΛΗΣ, ΑΠΑΝΟΛΗΣ, ΙΣΟΠΡΟΠΑΝΟΛΗΣ, ΒΟΥΤΑΝΟΛΗΣ). ΜΕΛΕΤΗΘΗΚΕ Η ΕΠΙΔΡΑΣΗ ΤΩΝ ΠΡΟΚΑΤΕΡΓΑΣΙΩΝ ΣΤΗ ΘΕΡΜΟΧΗΜΙΚΗ ΜΕΤΑΤΡΟΠΗ ΣΕ ΞΥΛΑΝΘΡΑΚΑ, ΣΤΗΝ ΕΝΖΥΜΙΚΗ ΥΔΡΟΛΥΣΗ ΜΕ ΚΥΤΤΑΡΙΝΑΣΕΣ ΤΗΝ ASP. NIGER, TR. VIVIDE ΚΑΙ FUS. OXYSPORUM, ΚΑΙ ΤΗΝ ΒΙΟΜΕΤΑΤΡΟΠΗ ΤΟΥ ΑΧΥΡΟΥ ΣΕ ΑΠΑΝΟΛΗ ΑΠΟ ΤΟ ΜΥΚΗΤΑ F. OXYSPORUM. ΟΙ ΒΑΘΜΟΙ ΑΠΟΔΟΣΗΣ ΤΩΝ ΜΕΤΑΤΡΟΠΩΝ ΕΙΝΑΙ ΦΘΙΝΟΥΣΕΣ ΓΡΑΜΜΙΚΕΣ ΣΥΝΑΡΤΗΣΕΙΣ ΤΟΥ ΜΕΓΕΘΟΥΣ ΚΑΙ ΑΥΞΟΥΣΕΣ ΤΟΥ ΒΑΘΜΟΥ ΑΠΟΛΙΓΝΙΝΩΣΗΣ. ΠΡΟΤΕΙΝΟΝΤΑΙ ΔΕΥΤΕΡΟΥ ΒΑΘΜΟΥΣΥΣΧΕΤΙΣΕΙΣ (ΩΣ ΠΡΟΣ ΤΟ ΔΕΙΚΤΗ ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑΣ ΚΑΙ ΤΗΝ ΠΕΡΙΕΚΤΙΚΟΤΗΤΑ ΣΕ ΛΙΓΝΙΤΗ) ΤΩΝ ΜΕΓΕΘΩΝ ΤΗΣ ΜΕΤΑΤΡΟΠΗΣ."]},{"key":"dc:title","label":"Title","values":["ΜΕΛΕΤΗ ΤΟΥ ΜΗΧΑΝΙΣΜΟΥ ΠΡΟΚΑΤΕΡΓΑΣΙΑΣ ΓΙΑ ΤΗΝ ΜΕΤΑΤΡΟΠΗ ΤΗΣ ΒΙΟΜΑΖΑΣ ΣΕ ΚΑΥΣΙΜΑ ΚΑΙ ΧΗΜΙΚΑ: ΕΠΙΔΡΑΣΗ ΣΤΗ ΣΤΕΡΕΑ ΦΑΣΗ","INVESTIGATION OF THE PRETREATMENT MECHANISM FOR THE CONVERSION OF BIOMASS TO FUELS AND CHEMICALS: EFFECT ON SOLID PHASE"]}]}],"canonical_facts":{"dc:creator":["Koullas, Dimitrios","Κουλλάς, Δημήτριος"],"dc:date":["1990"],"dc:description":["THE EFFECTS OF PHYSICAL AND CHEMICAL PRETREATMENTS ON THE PARTICLE SIZE, SPECIFIC SURFACE AREA, CRYSTALLINITY INDEX, CHEMICAL COMPOSITION, DENSITY OF WHEAT STRAW IS EXAMINED. THE PHYSICAL PRETREATMENTS STUDIED WERE HAMMER - AND BALL-MILLING. THE CHEMICAL PRETREATMENTS UTILIZED WERE DELIGNIFICATIONS WITH AQUEOUS ALKALINE SOLUTIONS (NAOH, KOH, NA2CO3) AND ALCOHOL-WATER MIXTURES (METHANOL, ETHANOL, ISOPROPANOL, N-BUTANOL). THE EFFECT OF PRETREATMENTS ON THERMOCHEMICAL CONVERSION TO CHARCOAL, ON ENZYMIC HYDROLYSIS WITH ASPERGILLUS NIGER, TRICHODERMA VIVIDE AND FUSARIUM OXYSPORUM CELLULASES AND ON BIOETHANOL PRODUCTION WITH F . OXYSPORUM CELLULASES AND ON BIOETHANOL PRODUCTION WITH F. OXYSPORUM WAS EVALUATED D.CONVERSION YIELDS ARE INVERSE LINEAR FUNCTIONS OF PARTICLE SIZE AND LINEAR FUNCTION OF DEGREE OF DELIGNIFICATION. SECOND ORDER CORRELATIONS WITH RESPECT TO CRYSTALLINITY INDEX AND LIGNIN CONTENT OF CONVERSION PARAMETERS ARE PROPOSED.","ΕΞΕΤΑΣΘΗΚΕ Η ΕΠΙΔΡΑΣΗ ΦΥΣΙΚΩΝ ΚΑΙ ΧΗΜΙΚΩΝ ΠΡΟΚΑΤΕΡΓΑΣΙΩΝ ΣΤΟ ΜΕΓΕΘΟΣ, ΤΗΝ ΕΙΔΙΚΗ ΕΠΙΦΑΝΕΙΑ, ΤΟ ΔΕΙΚΤΗ ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑΣ, ΤΗ ΧΗΜΙΚΗ ΣΥΣΤΑΣΗ ΑΧΥΡΟΥ ΣΙΤΑΡΙΟΥ. ΤΙΣΦΥΣΙΚΕΣ ΠΡΟΚΑΤΕΡΓΑΣΙΕΣ ΑΠΟΤΕΛΕΣΑΝ Η ΑΛΕΣΗ ΣΕ ΣΦΥΡΟΜΥΛΟ ΚΑΙ ΣΕ ΣΦΑΙΡΟΜΥΛΟ. ΤΟ ΑΧΥΡΟ ΥΠΕΣΤΗ ΠΡΟΚΑΤΕΡΓΑΣΙΑ ΜΕ ΥΔΑΤΙΚΟ ΔΙΑΛΥΜΑ ΑΛΚΑΛΕΩΣ (ΝΑΟΗ, ΚΟΗ, NA2CO3)NAOH, KOH, NA2 'Η ΜΙΓΜΑ ΝΕΡΟΥ-ΑΛΚΟΟΛΗΣ (ΜΕΘΑΝΟΛΗΣ, ΑΠΑΝΟΛΗΣ, ΙΣΟΠΡΟΠΑΝΟΛΗΣ, ΒΟΥΤΑΝΟΛΗΣ). ΜΕΛΕΤΗΘΗΚΕ Η ΕΠΙΔΡΑΣΗ ΤΩΝ ΠΡΟΚΑΤΕΡΓΑΣΙΩΝ ΣΤΗ ΘΕΡΜΟΧΗΜΙΚΗ ΜΕΤΑΤΡΟΠΗ ΣΕ ΞΥΛΑΝΘΡΑΚΑ, ΣΤΗΝ ΕΝΖΥΜΙΚΗ ΥΔΡΟΛΥΣΗ ΜΕ ΚΥΤΤΑΡΙΝΑΣΕΣ ΤΗΝ ASP. NIGER, TR. VIVIDE ΚΑΙ FUS. OXYSPORUM, ΚΑΙ ΤΗΝ ΒΙΟΜΕΤΑΤΡΟΠΗ ΤΟΥ ΑΧΥΡΟΥ ΣΕ ΑΠΑΝΟΛΗ ΑΠΟ ΤΟ ΜΥΚΗΤΑ F. OXYSPORUM. ΟΙ ΒΑΘΜΟΙ ΑΠΟΔΟΣΗΣ ΤΩΝ ΜΕΤΑΤΡΟΠΩΝ ΕΙΝΑΙ ΦΘΙΝΟΥΣΕΣ ΓΡΑΜΜΙΚΕΣ ΣΥΝΑΡΤΗΣΕΙΣ ΤΟΥ ΜΕΓΕΘΟΥΣ ΚΑΙ ΑΥΞΟΥΣΕΣ ΤΟΥ ΒΑΘΜΟΥ ΑΠΟΛΙΓΝΙΝΩΣΗΣ. ΠΡΟΤΕΙΝΟΝΤΑΙ ΔΕΥΤΕΡΟΥ ΒΑΘΜΟΥΣΥΣΧΕΤΙΣΕΙΣ (ΩΣ ΠΡΟΣ ΤΟ ΔΕΙΚΤΗ ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑΣ ΚΑΙ ΤΗΝ ΠΕΡΙΕΚΤΙΚΟΤΗΤΑ ΣΕ ΛΙΓΝΙΤΗ) ΤΩΝ ΜΕΓΕΘΩΝ ΤΗΣ ΜΕΤΑΤΡΟΠΗΣ."],"dc:identifier":["10.12681/eadd/1422","http://hdl.handle.net/10442/hedi/1422"],"dc:language":["gre"],"dc:publisher":["National Technical University of Athens (NTUA)","Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)"],"dc:subject":["ΑΛΕΣΗ ΣΕ ΣΦΑΙΡΟΜΥΛΟ/ΣΦΥΡΟΜΥΛΟ","ΑΠΟΛΙΓΝΙΝΩΣΗ ΑΧΥΡΟΥ (ΑΛΚΑΛΙΚΗ, ORGANOSOLV)","Βιοαιθανόλη","Βιοενέργεια","Βιομάζα","ΔΕΙΚΤΗΣ ΚΡΥΣΤΑΛΛΙΚΟΤΗΤΑΣ","ΕΝΖΥΜΙΚΗ ΥΔΡΟΛΥΣΗ (ΣΑΚΧΑΡΟΠΟΙΗΣΗ)","ΘΕΡΜΟΧΗΜΙΚΗ ΜΕΤΑΤΡΟΠΗ ΒΙΟΜΑΖΑΣ","ΠΡΟΚΑΤΕΡΓΑΣΙΕΣ ΛΙΓΝΟΚΥΤΤΑΡΙΝΟΥΧΩΝ","BAU-/HAMMELMILLING","Bioenergy","Bioethanol","Biomass","CRYSTALLINITY INDEX","ENZYMIC HYDROLYSIS (SACCHARIFICATION)","PRETREATMENT OF LIGNOCELLULOSICS","STRAW DELIGNIFICATION (ALKALINE, ORGASOLV)","THERMOCHEMICAL CONVERSION OF BIOMASS","TR VIRIDE, ASP. NIGER, F. OXYSPORUM CELLULASES","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Χημικού Μηχανικού","Engineering and Technology","Chemical Engineering"],"dc:title":["ΜΕΛΕΤΗ ΤΟΥ ΜΗΧΑΝΙΣΜΟΥ ΠΡΟΚΑΤΕΡΓΑΣΙΑΣ ΓΙΑ ΤΗΝ ΜΕΤΑΤΡΟΠΗ ΤΗΣ ΒΙΟΜΑΖΑΣ ΣΕ ΚΑΥΣΙΜΑ ΚΑΙ ΧΗΜΙΚΑ: ΕΠΙΔΡΑΣΗ ΣΤΗ ΣΤΕΡΕΑ ΦΑΣΗ","INVESTIGATION OF THE PRETREATMENT MECHANISM FOR THE CONVERSION OF BIOMASS TO FUELS AND CHEMICALS: EFFECT ON SOLID PHASE"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:24:56Z"}