Putra, Andreansyah Brilliant (2025) Recovery Natrium Klorida (NaCl) dalam Bittern dengan Penambahan Natrium Hidroksida (NaOH). Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
This research was conducted to determine the level of Sodium Chloride (NaCl) recovery from bittern, which is the concentrated liquid waste product of salt manufacturing that still contains 30.44% NaCl, but also has significant impurities in the form of Magnesium (Mg) ions at 6.3531% and Calcium (Ca) ions at 1.2265%. Given the high demand for industrial salt in Indonesia as a backdrop, this research used a precipitation method by adding Sodium Hydroxide (NaOH) to precipitate the Mg²⁺ and Ca²⁺ impurity ions, followed by crystallization of the filtrate to produce NaCl salt. The research results indicated that the level of NaCl recovery and the reduction of impurities were highly dependent on the combination of NaOH concentration and stirring time. The condition that yielded the lowest total impurity content (Mg and Ca), which was 0.0359%, was achieved by adding 5.80 N NaOH concentration with a 50-minute stirring time. This optimum treatment resulted in the best recovery of 85.57% with an NaCl purity of 89.61%. Nevertheless, the salt obtained, with a purity range of 72.65% to 89.61%, is classified as common people's salt (garam rakyat) that is more suitable for food preservation or traditional medicine, and does not yet meet the high purity standards required by the food or pharmaceutical industries.
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
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| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||||||
| Depositing User: | Andeansyah Brilliant Putra | ||||||||||||
| Date Deposited: | 04 Dec 2025 07:37 | ||||||||||||
| Last Modified: | 05 Dec 2025 06:43 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/47707 |
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