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Identifier

000377647

Title

Κρυστάλλωση θειικού ασβεστίου και αναστολή της με χρήση ανιοντικών πρόσθετων

Alternative Title

Crystallization of calcium sulfate and its inhibition with use of anionic additives

Author

Τζαγκαράκη, Ευαγγελία Ζαχαρίας

Thesis advisor

Δημάδης, Κωνσταντίνος

Reviewer

Στεφάνου, Ευριπίδης
Μήλιος, Κωνσταντίνος

Abstract

Scale deposition of sparingly soluble salts is a severe problem that occurs in many industrial processes. The present Master Thesis is part of the on-going research for effective scale inhibition of calcium sulfate dehydrate (gypsum). Two important parameters were closely examined, supersaturation level (different solution concentrations) and scale inhibitors dosage. Four different scale inhibitors were studied under laboratory conditions, and are the following: hydroxyphosphonoacetic acid (HPAA), amino-tris(methylenephosphonic acid) (AMP), hydroxyethylidene-1,1-diphosphonic acid (HEDP), 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC).

Language

Greek

Subject

AMP

Calcium sulfate

Gypsum

HEDP

HPAA

PBTC

Scale

Scale inhibitors

Γύψος