KAJIAN PENAMBAHAN ABU SEKAM PADI DARI BERBAGAI SUHU PENGABUAN TERHADAP PLASTISITAS KAOLIN
Saiyidatul Umah, Anton Prasetyo, Himmatul Barroroh
Abstract
Abu sekam padi merupakan bahan buangan dari padi yang mengandung silika (SiO2). Oleh karena itu abu sekam padi mempunyai peluang sebagai bahan aditif pada pembuatan keramik. Pembuatan abu sekam padi dilakukan pada variasi suhu pengabuan 600 0C, 700 0C dan 800 0C selama 4 jam. Hasil penelitian menunjukkan bahwa tingkat kecerahan warna dari abu sekam padi semakin tinggi seiring kenaikan suhu pengabuan 600 0C, 700 0C dan 800 0C yaitu 60,8; 61,4; 66,5. Kadar air dari abu sekam padi dari hasil pengabuan pada suhu 600 0C, 700 0C dan 800 0C sebesar 0,596 %; 0,895 %; dan 0,296 %. Kadar karbon (termasuk kontribusi kadar air) dari masing-masing abu sekam padi sebesar 0,045%; 0,048%; 0,037%, jumlah kualitatif SiO2 dari abu sekam padi hasil pengabuan pada suhu pengabuan 600 0C < 700 0C < 800 0C sedangkan komposisi kimia dari abu sekam padi yang dominan adalah Si hingga mencapai 91,2 %. Difraktogram dari masing-masing abu sekam padi menunjukkan pola difraksi sinar X dengan kristalinitas yang rendah dan cenderung amorf. Indeks plastisitas kaolin semakin turun dengan penambahan abu sekam padi yang diabukan pada variasi suhu 600 0C, 700 0C dan 800 0C yaitu; 21,49; 18,45; 10,77.
Keywords
Abu Sekam Padi (ASP); plastisitas; kaolin
DOI:
https://doi.org/10.18860/al.v0i0.1671
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Copyright (c) 2012 Saiyidatul Umah, Anton Prasetyo, Himmatul Barroroh
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This work is licensed under NME Creative Commons Atribusi-NonKomersial-BerbagiSerupa 4.0 Internasional . ALCHEMY is managed by http://kimia.uin-malang.ac.id/ © All rights reserved 2016. Alchemy, Journal of Chemistry, eISSN 2460-6871
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