Enhancing Salt Purification in Oli’o Village, East Nusa Tenggara: A Case Study on Optimizing Precipitating Agent Addition Methods and Salinity Levels

Authors

  • Adrian Wiryawan Harjono Parahyangan Catholic University
  • Kevin Cleary Wanta Parahyangan Catholic University
  • Y.I.P. Arry Miryanti Parahyangan Catholic University
  • Judy Retti B. Witono Parahyangan Catholic University
  • Anggelinus Nadut Widya Mandira Catholic University
  • Herry Santoso Parahyangan Catholic University

DOI:

https://doi.org/10.4186/ej.2024.28.10.1

Keywords:

precipitant addition, precipitation, purity, salinity, salt

Abstract

The East Nusa Tenggara province holds significant potential as a contributor to Indonesia's national salt production. However, salt production in this area often needs to meet quality standards due to the high presence of impurities, such as calcium, magnesium, and sulfate. The limitations in technology and salt purity in Indonesia necessitate the country to import high-quality salt. This research aims to develop and enhance the purity of NaCl in the salt production of Oli'o Village through the addition of chemical substances. The method employed to improve salt purity is the precipitation method, utilizing precipitants Na2CO3, NaOH, and BaCl2 to precipitate calcium, magnesium, and sulfate impurities. The primary research involved adding precipitants in a 1:1 stoichiometric ratio and stirring for 45 minutes. Experimental variables encompassed the method of precipitant addition and salinity levels (16, 20, 23, 25 °Be). The analysis of impurity concentrations before and after the addition of precipitants was conducted through complexometric titration for calcium and magnesium, argentometric titration for NaCl, and turbidimetry for sulfate. The research reveals that the direct addition of the three precipitants yields the best results. In terms of salinity variations, it is observed that salinity at 16 °Be provides the highest purity compared to other salinity levels. The increase in salinity enhances impurity concentrations, decreasing the impurity removal percentage’s

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Author Biographies

Adrian Wiryawan Harjono
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Department of Chemical Engineering, Faculty of Engineering Technology, Parahyangan Catholic University, Bandung, 40141, Indonesia

Kevin Cleary Wanta
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Department of Chemical Engineering, Faculty of Engineering Technology, Parahyangan Catholic University, Bandung, 40141, Indonesia

Y.I.P. Arry Miryanti
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Department of Chemical Engineering, Faculty of Engineering Technology, Parahyangan Catholic University, Bandung, 40141, Indonesia

Judy Retti B. Witono
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Department of Chemical Engineering, Faculty of Engineering Technology, Parahyangan Catholic University, Bandung, 40141, Indonesia

Anggelinus Nadut
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Department of Chemistry, Faculty of Mathematics and Natural Sciences, Widya Mandira Catholic University, Kupang, 85211, Indonesia

Herry Santoso
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Department of Chemical Engineering, Faculty of Engineering Technology, Parahyangan Catholic University, Bandung, 40141, Indonesia

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Published In
Vol 28 No 10, Oct 31, 2024
How to Cite
[1]
A. W. Harjono, K. C. Wanta, Y. A. Miryanti, J. R. B. Witono, A. Nadut, and H. Santoso, “Enhancing Salt Purification in Oli’o Village, East Nusa Tenggara: A Case Study on Optimizing Precipitating Agent Addition Methods and Salinity Levels”, Eng. J., vol. 28, no. 10, pp. 1-12, Oct. 2024.
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