Penggunaan Natrium Aluminat sebagai Koagulan Dalam Penurunan Kesadaran  

Oleh:

Winarni

Jenis: Article from Journal - ilmiah nasional - tidak terakreditasi DIKTI
Dalam koleksi: Widya: Majalah Ilmiah vol. 13 no. 131 (Aug. 1996), page 40-47.
Topik: Natrium Aluminat; Penurunan Kesadaran

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: MM47.10 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Water hardness is caused by metalic divalent cations, calium and magnesium are the principal hardness-forming constituents. Lime softening process is a chemical precipitation process forming CaCO3 and Mg (OH)2 precipitants. However, colloid particles are also formed in these precipitants. Sodium aluminate (NaAlO2) is an alkaline coagulant that also acts as a addition of this coagulant in the lime softening process helps in the formation of Mg(OH)2 flock. This can be removed from water through sedimentation, and reduces magnesium's hardness in water. Also, as a softener, sodium alluminate can reduce calcium hardness in water.

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