TY - GEN
T1 - The effect of variation concentration sodium hydroxide (Naoh) on the structure of calcium carbonate (caco3) based on natural sand
AU - Silvia, Linda
AU - Amilia,
AU - Awathifi, Lana
AU - Mashuri,
AU - Arifin, Zaenal
AU - Subagyo, Bintoro Anang
AU - Sukamto, Heru
AU - Purwaningsih, Sri Yani
AU - Hapsari, Yanurita Dwi
AU - Sudarsono,
AU - Mariyanto,
AU - Baqiya, Malik Anjelha
AU - Cahyono, Yoyok
AU - Zainuri, Mochamad
N1 - Publisher Copyright:
© 2020 Trans Tech Publications Ltd, Switzerland.
PY - 2020
Y1 - 2020
N2 - Utilization of abundant natural resources has been an important issue in recent years. CaCO3 was successfully prepared from natural sand by purification bubbling methods with flowing CO2 gas into an aqueous Ca(OH)2 medium with NaOH as catalyst. In the experimental set-up, natural sand was dissolved with different NaOH concentrations of 5, 6, and 7 M, respectively. In the carbonation process, room temperature is used as reaction temperature, while CO2 gas flow rate was carried out at 5 SCFH (Square Cubic Feet per Hour) and the speed of stirring was kept constant. The reaction was occurred around 5 minutes to produce precipitation of CaCO3. The influences of reaction parameters such as the various concentrations of NaOH were studied by using X-ray fluorescence spectrometer (XRF), X-ray powder diffraction (XRD), Particle size analyzer (PSA), and Scanning Electron Microscopy (SEM) to investigate the element composition, crystal structure, size of particles, and morphology of particles, respectively. The results showed that NaOH concentration effected not only on the phases of CaCO3 but also on the microstructure and morphology of CaCO3. Calcite and vaterite phases are observed which have a rhombic and spherical morphology in micro-scale, respectively.
AB - Utilization of abundant natural resources has been an important issue in recent years. CaCO3 was successfully prepared from natural sand by purification bubbling methods with flowing CO2 gas into an aqueous Ca(OH)2 medium with NaOH as catalyst. In the experimental set-up, natural sand was dissolved with different NaOH concentrations of 5, 6, and 7 M, respectively. In the carbonation process, room temperature is used as reaction temperature, while CO2 gas flow rate was carried out at 5 SCFH (Square Cubic Feet per Hour) and the speed of stirring was kept constant. The reaction was occurred around 5 minutes to produce precipitation of CaCO3. The influences of reaction parameters such as the various concentrations of NaOH were studied by using X-ray fluorescence spectrometer (XRF), X-ray powder diffraction (XRD), Particle size analyzer (PSA), and Scanning Electron Microscopy (SEM) to investigate the element composition, crystal structure, size of particles, and morphology of particles, respectively. The results showed that NaOH concentration effected not only on the phases of CaCO3 but also on the microstructure and morphology of CaCO3. Calcite and vaterite phases are observed which have a rhombic and spherical morphology in micro-scale, respectively.
KW - Bubbling
KW - Calcium carbonate
KW - NaOH
KW - Sand
UR - http://www.scopus.com/inward/record.url?scp=85091344558&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.860.267
DO - 10.4028/www.scientific.net/KEM.860.267
M3 - Conference contribution
AN - SCOPUS:85091344558
SN - 9783035716979
T3 - Key Engineering Materials
SP - 267
EP - 273
BT - Physics Symposium
A2 - Bahtiar, Ayi
A2 - Saragi, Togar
A2 - Hidayat, Sahrul
A2 - Safriani, Lusi
PB - Trans Tech Publications Ltd
T2 - 4th Padjadjaran International Physics Symposium, PIPS 2019
Y2 - 13 November 2019 through 14 November 2019
ER -