Perwitasari, Dyah Suci and Santi, Sintha Soraya and Yahya, A (2022) THE EFFECT OF STIRRER ROTATION ONCRYSTALIZATION OF STRUVITE THAT CAN BE USED AS FERTILIZER. International Journal of Mechanical Engineering, 7 (1). pp. 2969-2972. ISSN 0974-5823
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Abstract
Stirring has been used as an efficient method for crystallization so as to maintain the crystal suspension and to achieve uniformity of all suspension properties in the crystalliser. The addition of tartaric acid can significantly affect the crystallization kinetics and crystal morphology even in small amounts. The purpose of this study was to study the effect of stirring and the addition of tartaric acid on the crystallization of struvite which can be used as fertilizer. MgCl2, C4H6O6 and NH4H2PO4 crystals were dissolved in distilled water to prepare struvite crystallization solution. All solutions were then mixed in a beaker glass with stirring at 200 and 300 rpm at 40 o C with the addition of 0, 10, 20 ppm tartaric acid using the bath process. The results showed that the stirring speed affected the growth of struvite crystals, the higher rotation speed of the stirrer resulted in an increase in struvite crystals so that the constant rate value became greater so that it could be used as a good parameter for the manufacture of struvite fertilizer. Material characterization used Scanning electron microscopy (SEM-EDX) and crystal phase analysis using X-ray powder diffraction (XRPD). Keywords: Stirrer rotation, ,struvite, SEM-EDX, tartaric acid, XRPD
| Item Type: | Article |
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| Subjects: | T Technology > TP Chemical technology > TP155 Chemical engineering |
| Depositing User: | Fatchullah Fatchullah |
| Date Deposited: | 26 Apr 2022 07:39 |
| Last Modified: | 26 Apr 2022 07:39 |
| URI: | http://repository.upnjatim.ac.id/id/eprint/5978 |
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