Development of Geopolymer-Based Materials from Coal Bottom Ash and Rice Husk Ash with Sodium Silicate Solutions

Author(s):  
Hoc Thang Nguyen ◽  
Trung Kien Pham ◽  
Michael A. B. Promentilla
2018 ◽  
Author(s):  
Nguyen Hoc Thang ◽  
Nguyen Ngoc Hoa ◽  
Pham Vo Thi Ha Quyen ◽  
Nguyen Ngoc Kim Tuyen ◽  
Tran Vu Thao Anh ◽  
...  

2014 ◽  
Vol 1010-1012 ◽  
pp. 1015-1019
Author(s):  
Ze Xin Yang ◽  
Lin Dong ◽  
Meng Wang ◽  
Huan Li

The main purpose of this article is to develop an environmentally friendly and economically effective process to produce silica from rice husk ash. Sodium silicate solution was prepared by the reaction of rice husk ash and sodium hydroxide solution, and then the sodium silicate solution was used as the raw material for the preparation of silica with sodium bicarbonate. During the reaction, the by-product can be passed into CO2 to prepare sodium bicarbonate what can be reutilized. Experimental route achieved resource recycling and environment-friendly, low energy consumption, zero emissions and so on. Meanwhile the microstructures of the silica powders were characterized by Transmission electron microscope (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) and Thermo gravimetric/Differential thermal analyzer (TG-DTA).The purity of silicon was up to 99.43% and the particle size was 200-300nm.


Tibuana ◽  
2020 ◽  
Vol 3 (01) ◽  
pp. 47-52
Author(s):  
Yanatra budi Pramana ◽  
M. Amin Pahlevi ◽  
Zhulianto Ashari ◽  
M. Fariz Effendi ◽  
Fibra Gilang Ramadhan

Utilization of rice husks in Indonesia in general is still very limited. Utilization of silica contained in rice husk ash, which has been used, among others, in the manufacture of sodium silicate. Silica compounds themselves can be used in and manufacturing basic materials for electronic and ceramic equipment, glass, rubber, cosmetic products, and pharmaceuticals. The addition of Mg can increase the silica content (SiO2) in rice husk ash. The best results show an effective Mg ratio of Mg addition to increase silica content is 1: 1. produces the highest amount of silica which is 58.12% of the rice husk ash with a size of 140 mesh


2017 ◽  
Vol 142 ◽  
pp. 3050-3060 ◽  
Author(s):  
E. Kamseu ◽  
L.M. Beleuk à Moungam ◽  
M. Cannio ◽  
Ndigui Billong ◽  
Duangrudee Chaysuwan ◽  
...  

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