An Interesting Final-Year Undergraduate Laboratory Project: Investigation of Gypsum Scale Formation on Piping Surfaces

S. Muryanto(1*), H M Ang(2)

(1) Department of Chemical Engineering, UNTAG Semarang Jalan Pawiyatan Luhur, Semarang 50233 INDONESIA
(2) Department of Chemical Engineering Curtin University of Technology GPO Box U 1987, Perth 6845 W A, AUSTRALIA
(*) Corresponding Author


The formation of scales in pipes and on the surfaces of vessels is one of the major problems encountered by the mineral processing industry in Australia and elsewhere. A cursory study revealed that one of the main components of the scales was gypsum or calcium sulfate dihydrate. This paper discusses a typical undergraduate laboratory project to investigate the formation of calcium sulfate dihydrate scale on the surfaces of different types of pipes under isothermal conditions. This laboratory exercise is essentially a crystallization process and is suggested as one of the topics for final-year chemical engineering undergraduate project since it is a very important unit operation in the chemical, mineral, or pharmaceutical industries. Keywords: Calcium sulfate dihydrate, laboratory project, scale formation, and undergraduate curriculum..


Calcium sulfate dihydrate, laboratory project, scale formation, and undergraduate curriculum,

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ASEAN Journal of Chemical Engineering  (print ISSN 1655-4418; online ISSN 2655-5409) is published by Chemical Engineering Department, Faculty of Engineering, Universitas Gadjah Mada.