MICROANALYSIS PEMBENTUKAN KRISTAL CALSIUM SULFAT PADA PIPA BERALIRAN LAMINER DENGAN PARAMETER LAJU ALIR
Abstract: Gypsum (CaSO4. 2H2O)
scaling inside pipe is very problematic for industries since it causes
narrowing of pipe diameter, thickening of heat transfer surfaces, lenghthening
the process time and finally increase the cost of production. It is therefore
necessary to prevent the occurance of gypsum scaling in a piping system. This
report describes an experiment on gypsum scale formation utilizing CaCl2.2H2O
and Na2SO4 solutions to form gypsum ( CaSO4. 2H2O). The concentration the
calcium ions selected was 3,500 ppm. The experiment was carried out a pipe with
several coupons made of copper representing common pipe material used in
industry. Flowrate of gypsum solution as one of process parameters for gypsum
scaling was varied: 30, 40 and 50
ml/minute respectively. In addition,
Cu2+ as impurities was aded into the solution : 5 and 10 ppm respectively. In
adition, a microanalysis on the scale was also caried out using EDAX. The mass
of the scale formed was calculated in order to determine the rate of the gypsum
scale growth.
Penulis: Wiji Mangestiono
Kode Jurnal: jpkimiadd120239
