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Elineema, G.,Kim, J.K.,Hilonga, A.,Shao, G.N.,Kim, Y.N.,Quang, D.V.,Sarawade, P.B.,Kim, H.T. Korean Society of Industrial and Engineering Chemi 2013 Journal of industrial and engineering chemistry Vol.19 No.1
This study reports on the quantitative recovery of high purity nanoporous silica from wastes material (H<SUB>2</SUB>SiF<SUB>6</SUB>) of the phosphate fertilizer industry and Na<SUB>2</SUB>O.SiO<SUB>2</SUB>. The silica recovered from the wastes was compared with silica from the reaction of H<SUB>2</SUB>SO<SUB>4</SUB> and Na<SUB>2</SUB>O.SiO<SUB>2</SUB> because H<SUB>2</SUB>SO<SUB>4</SUB> is commonly used. The product recovered from the wastes material and H<SUB>2</SUB>SO<SUB>4</SUB> were 99.3% and 99.1% pure, respectively. The quantity recovered were 22.30g and 20.11g, respectively. The product had superior properties suitable for applications such as chromatography, reinforcing material for rubber and plastics. The process may significantly reduce the release of SiF<SUB>4</SUB> gas into the environment.
Gideon Elineema,김희택,김종길,Askwar Hilonga,Godlisten Namwel Shao,김유나,Pradip B. Sarawade,Dang Viet Quang 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.1
This study reports on the quantitative recovery of high purity nanoporous silica from wastes material (H2SiF6) of the phosphate fertilizer industry and Na2O·SiO2. The silica recovered from the wastes was compared with silica from the reaction of H2SO4 and Na2O·SiO2 because H2SO4 is commonly used. The product recovered from the wastes material and H2SO4 were 99.3% and 99.1% pure, respectively. The quantity recovered were 22.30 g and 20.11 g, respectively. The product had superior properties suitable for applications such as chromatography, reinforcing material for rubber and plastics. The process may significantly reduce the release of SiF4 gas into the environment.