Effects of malonic acid on calcium carbonate crystalline phases and morphology
Stefanus Muryanto, S. Sutanti, E. Supriyo, W.A. Putranto
Available Online December 2018.
- https://doi.org/10.2991/icst-18.2018.64How to use a DOI?
- CaCO3, crystal phases, malonic acid, scale control
- Calcium carbonate (CaCO3) crystals are in much demand as low-priced fillers and brightening agents. For example, the pulp and paper industries use CaCO3 as fillers to enhance opacity, brightness, smoothness and printability. Such enhancement is regulated by the crystal properties: morphology, crystalline phases, size, size distribution, and aggregation capabilities. In contrast, scale formation of CaCO3 is encountered in many industrial processes, which results in reduction of heat and mass transfer. To a large extent, the CaCO3 scaling is also dictated by the above mentioned properties. Detailed understanding of alteration of CaCO3 properties is therefore of prime importance. This paper reports CaCO3 precipitation conducted by drop-wise addition of Na2CO3 solution into solution of CaCl2 with stirring. The precipitation was done with and without malonic acid. Precipitates were filtered, centrifuged, and oven dried overnight at 60oC. The samples were characterized using SEM, XRD, and FTIR. In all cases amorphous calcium carbonate precipitated first and with time it transformed into calcite via vaterite and aragonite. It was found that malonic acid was able induce vaterite growth in solution. Higher amounts of malonic acid (ppm amounts) resulted in more vaterite phase alongside calcite. Both calcite and vaterite morphology changed with malonic acid in the solution as compared with pure precipitation with the acid
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- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Stefanus Muryanto AU - S. Sutanti AU - E. Supriyo AU - W.A. Putranto PY - 2018/12 DA - 2018/12 TI - Effects of malonic acid on calcium carbonate crystalline phases and morphology BT - Proceedings of the International Conference on Science and Technology (ICST 2018) PB - Atlantis Press SP - 301 EP - 305 SN - 2589-4943 UR - https://doi.org/10.2991/icst-18.2018.64 DO - https://doi.org/10.2991/icst-18.2018.64 ID - Muryanto2018/12 ER -