PREPARATION AND CHARACTERIZATION OF SILICA CERAMIC BAMBOO LEAVES AND CITRIC ACID LEACHING RESULT COMBUSTION TEMPRATURE 800-1000°C PREPARASI DAN KARAKTERISASI KERAMIK SILIKA DARI DAUN BAMBU HASIL LEACHING ASAM SITRAT DAN SUHU PEMBAKARAN 800 - 1000°C

Metode Leaching menggunakan asam sitrat bertujuan untuk menghila, 0917041049 (2014) PREPARATION AND CHARACTERIZATION OF SILICA CERAMIC BAMBOO LEAVES AND CITRIC ACID LEACHING RESULT COMBUSTION TEMPRATURE 800-1000°C PREPARASI DAN KARAKTERISASI KERAMIK SILIKA DARI DAUN BAMBU HASIL LEACHING ASAM SITRAT DAN SUHU PEMBAKARAN 800 - 1000°C. Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Lampung.

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HALAMAN PERSETUJUAN.pdf

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DAFTAR ISI.pdf

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Abstrak

Leaching method using citric acid aims to eliminate impurities and substances that are not needed in bamboo leaves. Bamboo leaves before the citric acid leaching were characterized using DTA/TGA. The results of the analysis of the DTA/TGA show that the mass of a very large shrinkage in bamboo leaves, indicating the evaporation of organic substances in the previous high temperature heating process, as well as the contribution of the residual carbon in the samples indicated the presence of considerable mass shrinkage at a temperature of 949°C for 77,02%. Prior to burning, bamboo leaves leached using citric acid 5%. Combustion temperature used is 800°C-1000°C in order to obtain silica powder. Samples of silica ceramic combustion products were analyzed using FTIR, XRD, and SEM. FTIR characterization results indicate the peak wave number of functional groups OH, Si-O-Si and Si-O. XRD characterization results indicate that the pattern of the x-ray crystal structure of silica samples with cristobalite phase and quartz phase. SEM characterization results showed that the surface of the grain size of the sample tested had more equitable, more refined and more granular look even. Keywords. silica, bamboo leaves, leaching citric acid, DTA/TGA, FTIR, XRD, and SEM. Metode Leaching menggunakan asam sitrat bertujuan untuk menghilangkan pengotor dan zat organik dalam daun bambu. Daun bambu sebelum dileaching asam sitrat dikarakterisasi menggunakan DTA/TGA. Hasil analisis DTA/TGA menunjukkan bahwa penyusutan massa yang sangat besar pada daun bambu ini mengindikasikan terjadinya penguapan zat organik dalam proses pemanasan pada suhu sebelumnya, serta kontribusi dari sisa karbon pada sampel yang ditunjukkan dengan adanya penyusutan massa yang cukup besar pada suhu 949°C sebesar 77,02%. Sebelum dilakukan pembakaran, daun bambu dileaching menggunakan asam sitrat 5%. Suhu pembakaran yang digunakan yaitu 800°C-1000°C sehingga diperoleh serbuk silika. Sampel keramik silika hasil pembakaran dianalisis dengan menggunakan FTIR, XRD, dan SEM. Hasil karakterisasi FTIR menunjukkan adanya puncak bilangan gelombang dengan gugus fungsi O-H, Si-O-Si dan Si-O. Hasil karakterisasi XRD menunjukkan bahwa pola sinar-x sampel silika memiliki struktur kristal dengan fasa crystobalite dan quartz. Hasil karakterisasi SEM menunjukkan bahwa permukaan sampel diuji memiliki ukuran butiran yang semakin merata, lebih halus dan bentuk butiran semakin terlihat seragam. Kata kunci. silika, daun bambu, leaching asam sitrat, DTA/TGA, FTIR, XRD, dan SEM.

Tipe Karya Ilmiah: Skripsi
Subyek: A General Works = Karya Karya Umum
Program Studi: Fakultas MIPA > Prodi Fisika
Depositing User: Farid Hambali Prihantoro, A.Md.
Date Deposited: 17 Oct 2014 02:33
Last Modified: 17 Oct 2014 02:33
URI: http://digilib.unila.ac.id/id/eprint/4214

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