ANALISIS PERTUMBUHAN FASA KERAK KALSIUM KARBONAT (CaCO3) AKIBAT PENAMBAHAN ASAM TARTRAT (C4H6O6) SEBAGAI ADITIF
DOI:
https://doi.org/10.35261/barometer.v2i2.602Abstract
Telah dilakukan penelitian mengenai simulasi penumbuhan kerak kalsium karbonat (CaCO3) pada pipa tembaga dengan variasi konsentrasi penambahan zat aditif asam tartrat (C4H6O6) 4 ppm, 6 ppm dan 10 ppm. Kerak CaCO3 dihasilkan dengan cara mereaksikan larutan CaCl2 dan Na2CO3H2O dengan konsetrasi larutan 2000 ppm, yang kemudian dialirkan pada pipa uji dengan laju aliran tetap 45 ml/menit. Hasil pengukuran konduktivitas larutan berhubungan dengan waktu induksi, dimana terjadi peningkatan waktu induksi 4 sampai 20 menit, dengan meningkatnya konsentrasi aditif. Hasil karakterisasi struktur morfologi dan pertumbuhan fasa kerak menggunakan Scanning electron microscopy (SEM) dan X-Ray deffraction (XRD) menunjukkan bahwa tanpa penambahan aditif fasa yang terbentuk adalah fasa kalsit. Penambahan aditif 4 ppm terbentuk fasa baru yaitu fasa vaterit, sedangkan penambahan aditif 6 ppm dan 10 ppm terbentuk fasa aragonit. Hal ini dikarenakan zat aditif mampu menempel pada permukaan kristal CaCO3 selama proses pertumbuhan kristal sehingga berdampak pada variasi polimorf. Hasil penelitian dapat diaplikasikan dibidang industri, khususnya dalam masalah penanggulangan kerak pada pipa.
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References
Sousa, M.F., Bertran, C.A., New methodology based on static light scattering measurements for evaluation of inhibitors for in bulk crystallization. Journal of Colloid and Interface Science, 420, 57-64, (2014).
Setta, F. A., Neville, A,. Efficiency assessment of inhibitors on CaCO3 precipitation kinetics in the bulk and deposition on a stainless steel surface (316L), Desalination, 281, 340-347, (2011).
Kiaei, Z., Haghtalab, A., Experimental study of using Ca-DTPMP nanoparticles in inhibition of CaCO3 scaling in a bulk water process, Desalination, 33, 84-92, (2014).
Muryanto, S., Bayuseno, A. P., Ma’mun, H., Usamah, M., Calcium carbonate scale formation in pipes: effect of flow rates, temperature, and malic acid as additives on the mass and morphology of the scale, Procedia Chemistry, 9, 69-76, (2014).
Martos, C., Coto, B., Pena, J.L., Rodriguez, R.,Garcia, D.M., Pastor, G., Effect of Precipitation and detection technique on particle size distribution of CaCO3, Journal of Crystal Growth, 312, 2756-2763, (2010).
Wada, N., Kanamura, K., Umegaki, T., Effects of carboxylic acids on the crystallization of calcium carbonate, Journal of Colloid and Interface Science, 233, 65-72, (2001).
Holysz, L., Szczes, A., Chibowski, E., Effects of a static magnetic field on water and electrolyte solutions, Journal of Colloid and Interface Science, 316, 996-1002, (2007).
Mao, Z., Huang, J., Habit modification of calcium carbonate in the presence of malic acid, Journal of Solid State Chemistry, 180, 453-460, (2007).
Isopescu, R., Mateescu, C., Mihai, M., Dabija, G., The effects of organic additives on induction time and characteristics of precipitated calcium carbonate, Chemical Engineering Research and Design, 88, 1450-1454, (2010).
Martinod, A., Euvrard, M., Foissy, A., Neville, A., Progressing the understanding of chemical inhibition of mineral scale by green inhibitors, Desalination, 220, 345-352, (2007).
Tang, Y., Zhang, F., Cao, Z., Jing, W., Chen, Y., Crystallization of CaCO3 in the presence of sulfate and additives: Experimental and molecular dynamics simulation studies, Journal of colloid and interface science, 377, 430-437, (2012).
Gopi, S., Subramanian, V.K., & Palanisamy, K., Aragonite-calcite-vaterite: A temperature influenced sequential polymorphic transformation of CaCO3 in the presence of DTPA, Materials Research Bulletin, 48, 1906–1912, (2013).
Reddy, M.M., Hoch, A.R., Calcite crystal growth rate inhibition by polycarboxylic acids, Journal of Colloid and Interface Science, 235, 365- 370, (2001).
