Pemurnian Garam NaCl melalui Metode Rekristalisasi Garam Krosok dengan Penambahan Na2CO3, NaOH dan Polialuminium Klorida untuk Penghilangan Pengotor Ca2+ dan Mg2+

Akustika Gemati  -  Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
*Gunawan Gunawan orcid scopus  -  Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
Khabibi Khabibi scopus  -  Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
Published: 1 Aug 2013.
Open Access Copyright 2013 Jurnal Kimia Sains dan Aplikasi
License URL: http://creativecommons.org/licenses/by-sa/4.0

Citation Format:
Abstract
Telah dilakukan penelitian tentang pemurnian garam NaCl melalui metode rekristalisasi garam krosok dengan penambahan Na2CO3, NaOH dan polialuminium klorida untuk penghilangan pengotor Ca2+ dan Mg2+. Tujuan penelitian ini adalah untuk menentukan pengaruh penambahan Na2CO3 dan NaOH terhadap konsentrasi kadar Mg2+ dan Ca2+ pada garam krosok serta untuk mengetahui efektivitas penambahan flokulan polialuminium khlorida (PAC) dalam reaksi pengendapan CaCO3 dan Mg(OH)2 dengan metode rekristalisasi modifikasi spray. Metode yang dilakukan pada penelitian ini dengan cara menambahkan bahan pengikat pengotor yang harganya lebih murah seperti Na2CO3 dan NaOH serta flokulan PAC yang dapat mengendapkan ion pengotor pada garam yaitu ion Ca2+ dan Mg2+ kemudian dilakukan rekristalisasi dengan modifikasi model spray untuk mendapatkan kristal NaCl yang lebih murni dengan lahan yang tidak begitu luas dan rekristalisasi meja kristalisasi penguapan. Hasil pemurnian garam krosok diperoleh kadar NaCl 98,53%, Ca2+ 0,0600%, dan Mg2+ 0,0288% dengan penambahan Na2CO3 20% w, NaOH0,1 N dan PAC 10 ppm sebanyak 3 mL, yang telah sesuai standar industri Indonesia (SII).
Keywords: Garam Krosok; Pemurnian Garam; NaCl; Na2CO3; NaOH; PAC

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Section: Research Articles
Language: ID
In Vol 16, No 2 (2013): Volume 16 Issue 2 Year 2013
Statistics: 6251 3030
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