Open AccessOrthogonal experimental study on preparation of water glass from biomass ash
Author(s) -
Ao Liu,
Huimin Zuo,
Peng Zhang,
Mi Zhou
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1965/1/012072
Subject(s) - sodium silicate , dissolution , fly ash , raw material , materials science , biomass (ecology) , alkali metal , volume (thermodynamics) , chemical engineering , silicate , sodium , chemistry , mineralogy , composite material , organic chemistry , metallurgy , thermodynamics , oceanography , physics , engineering , geology
Using fly ash from biomass power plant as raw material, sodium silicate was prepared by alkali melting method under normal pressure. Orthogonal experiments were designed to explore the effects of NaOH solution concentration, solid-liquid ratio (ratio of NaOH solution volume to biomass ash mass), reaction temperature and reaction time on the dissolution rate of SiO 2 and the modulus of sodium silicate. The results showed that the optimal solution was NaOH concentration of 1mol/L, solid-liquid ratio of 1:4, reaction temperature of 120°C and reaction time of 4 hours. According to the experimental verification, the dissolution rate of silicon dioxide and the modulus of water glass in the optimal scheme reach 56% and 2.43, respectively, which is the best experimental condition.