Pengaruh Suhu Kalsinasi Pada Proses Dekomposisi Dolomit

Royani, Ahmad; Sulistiyono, Eko; Sufiandi, Deddy

doi:10.17146/jsmi.2016.18.1.4186

Cited by 12 publications

(11 citation statements)

References 15 publications

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“…The calcination of the sample done by using a furnace with a temperature of 800 ºC for 3 hours to remove carbonate that can inhibit crystal formation and eliminate all organic elements contained in the bones of mackerel. (Royani et al, 2016) mentioned the decomposition of CaCO 3 into CaO ideally occurs at a temperature of 800 ºC. At this stage, there was a decomposition reaction of calcium carbonate (CaCO 3 ) to calcium oxide (CaO) Reactions that occurred according to eq.…”

Section: Resultsmentioning

confidence: 99%

“…In this study set, the basic condition of pH 12 was controlled using NaOH 1 M. Samples was calcined at a temperature of 900 ºC for 5 hours aimed to increasing the degree of crystallization (Haris et al, 2016), eliminate carbonate which can maximized the formation process of hydroxyapatite (HAp) (Ningsih et al, 2014). Heating at 900 ºC indicated that the samples used from the bones of the mackerel have a good thermal stability characterized by the formation of hydroxyapatite (HAp) (Royani et al, 2016). The reaction was in eq.…”

Section: Hydroxyapatite Synthesis (Hap)mentioning

confidence: 99%

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Hydroxyapatite (HAp) From Tenggiri Fish Bones As Abrasive Material In Toothpaste Formula

Anggresani¹,

Sari²,

Rahmadevi³

2021

Valensi

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Cavities are one of the factors of dental and oral health problems that can be prevented by brushing teeth using toothpaste. Toothpaste can be made from a variety of chemicals, one of which is hydroxyapatite (HAp) which has good biocompatible properties. Hydroxyapatite can be obtained by utilizing tenggiri fish bone waste which has the main element of calcium. Fish bones soaked with NaOH and acetone are then calcined at 800 °C for 3 hours to obtain CaO powder and characterized its elemental content using X-Ray Fluorescence (XRF). CaO obtained was then reacted with (NH4)2HPO4 with a mole ratio of Ca/P 1.67 then heated at 90 °C, added NaOH up to pH 12, then the obtained deposits are filtered and calcined at 900 °C. The solids obtained from the calcination are then characterized using X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM). Hydroxyapatite (HAp) was formulated into toothpaste with the concentrations of 0% (F0), 45% (F1), 50% (F2), and 55% (F3). Toothpaste was evaluated using organoleptic tests, homogeneity tests, foam height tests, spreadability tests, pH and hedonic tests. XRD analysis shows that the resulting hydroxyapatite (HAp) has a crystal structure in accordance with ICSD standard No. 96-900-3549. SEM analysis showed that granular particles measuring 0.1 μm–0.3 μm in size. All formulated toothpastes (F0, F1, F2, and F3) meet the requirements of a good toothpaste. Hydroxyapatite (HAp) can be formulated into a good toothpaste with a concentration of 45%.

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Section: Resultsmentioning

confidence: 99%

Section: Hydroxyapatite Synthesis (Hap)mentioning

confidence: 99%

Hydroxyapatite (HAp) From Tenggiri Fish Bones As Abrasive Material In Toothpaste Formula

Anggresani¹,

Sari²,

Rahmadevi³

2021

Valensi

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“…The yield decreasing showed that the cockle shells had decomposed during the heating process. The decomposed phase was calculated from the change in weight of the sample to the initial weight of sample [17]. It could be seen that the maximum was achieved at a temperature of 1000 ºC, which was 55.13%.…”

Section: Figure 1 Cao Powder Produced By Calcination Cockle Shells Fr...mentioning

confidence: 99%

Synthesis and Characterization of Hydroxyapatite of Cockle Shells (Anadara granosa) Originated from Indonesia Through Precipitation Method

Sinurat¹,

Dewi

Fransiska³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The precipitation method successfully synthesized cockle shells into a highly valuable biomaterial in the present investigation. The present work aimed to determine the effect of the technical approach; (1) calcination temperatures of calcium oxide preparation and (2) sintering time of HA synthesis. Thermogravimetric-differential thermal analysis revealed that the cockle shells were calcined at 600 – 1000 °C for 3 hours and had a fine CaO powder. Thus, those sintering temperature is used as the starting point for the calcination of cockle shells. The calcinated CaO powder was then analyzed. The analysis conducted includes yield, functional group analysis using FT-IR, morphological analysis using SEM, and analysis of the composition of Carbon (C), Calcium (Ca), Oxygen (O), and Phosphor (P). Furthermore, hydroxyapatite synthesis (HA) was done with three different sintering times (2, 4, and 6 hours) at 800 °C. The characterized HA was functional group morphology, major elemental in the apatite constituents, and the crystallinity degree. Obtained the optimum temperature result for calcinated at a temperature of 800 °C. The results of HA synthesis obtained by HA quality have approached commercial HA products judging from the composition of Ca, O, and P, but the quality still includes type B of commercial HA. The HA particles obtained are micro-sized, which is 304 nm at a temperature sintering of 800 °C for 4 hours. The micro-sized allows a by-product of cockle shells as raw material HA to be applied as a futuristic biomaterial in bone/teeth implants.

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“…Tahap pertama terjadi pada temperatur 700˚C, sedangkan langkah kedua terjadi pada temperatur 740˚C [1]. Kalsinasi dolomit dipengaruhi oleh beberapa parameter seperti: komposisi dolomit, densitas dan ukuran partikel, temperatur kalsinasi, dan atmosfer dalam tungku [1,2,3,4,5].…”

Section: Pendahuluanunclassified

Karakterisasi Dan Kinetika Kalsinasi Dolomit

Wulandari

Subagjo

Rio

et al. 2018

JTBBT

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Kalsinasi merupakan salah satu proses untuk meningkatkan nilai tambah dolomit menjadi berbagai jenis produk akhir, seperti bahan baku pembuatan logam magnesium, sebagai fluks untuk pembuatan baja, serta batu bata tahan api. Penelitian ini dimaksudkan untuk menentukan kinetika kalsinasi dolomit Gresik, Jawa Timur. Temperatur reaksi divariasikan 700, 800 dan 900˚C. Kalsinasi dilakukan selama 1, 2, 3, dan 4 jam di dalam sebuah reaktor tubular dengan diameter 3 cm pada tekanan atmosfer. Reaksi kalsinasi dilakukan dalam kondisi gas nitrogen yang dialirkan sebagai gas-elusi dengan laju alir 50 mL/menit. Konversi dolomit mencapai 98 hingga 99% ketika kalsinasi dilakukan pada temperatur 800 dan 900˚C. Model difusi Ginstling-Brounshtein dapat dijadikan model yang paling sesuai untuk menggambarkan reaksi kalsinasi yang dikendalikan oleh perpindahan massa difusi di dalam partikel. Untuk model Ginstling-Brounshtein, energi aktivasi kalsinasi dolomit terhitung sebesar 77,07 kJ/mol.Kata Kunci: dolomit, kalsinasi, kinetika, Ginstling-Brounshtein model, SEM

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Pengaruh Suhu Kalsinasi Pada Proses Dekomposisi Dolomit

Cited by 12 publications

References 15 publications

Hydroxyapatite (HAp) From Tenggiri Fish Bones As Abrasive Material In Toothpaste Formula

Hydroxyapatite (HAp) From Tenggiri Fish Bones As Abrasive Material In Toothpaste Formula

Synthesis and Characterization of Hydroxyapatite of Cockle Shells (Anadara granosa) Originated from Indonesia Through Precipitation Method

Karakterisasi Dan Kinetika Kalsinasi Dolomit

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