METHOD FOR PRODUCING AMORPHOUS SILICA AND METHOD FOR PRODUCING COSMETIC RAW MATERIAL

• Main Authors: KAMATA YOSUKE, KUSAKA EIJI, TANI NAOTO, ABE TAKESHI, MORITA TAKAMASA, KURATA MASAHITO
• Format: Patent
• Language: English; Japanese
• Published: 26.07.2021
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; DISPOSAL OF SOLID WASTE; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; TRANSPORTING

To provide high quality amorphous silica and a foundation raw material having high whiteness using the same while efficiently recovering energy by using biomass containing silicon as a raw material.SOLUTION: A method for producing amorphous silica comprises at least one of a mineralization step of obtaining a mineralized biomass residue from a biomass containing silicon, a silica purification step of reducing carbon in the biomass residue generated in the mineralization step to form amorphous silica, a pretreatment step of decolorization pretreating the biomass residue before the silica purification step, and a decolorizing step of decolorizing the amorphous silica after the silica purification step.SELECTED DRAWING: Figure 1 【課題】ケイ素を含むバイオマスを原料として効率的にエネルギー回収するとともに高品質な非晶質シリカおよびこれを用いた白色度の高いファンデーション原料を製造する。【解決手段】非晶質シリカの製造方法であって、ケイ素を含むバイオマスから無機化されたバイオマス残渣を得る無機化ステップと、前記無機化ステップで生じた前記バイオマス残渣中の炭素を低減して非晶質シリカを生成させるシリカ精製ステップと、前記シリカ精製ステップ前に前記バイオマス残渣を脱色前処理する前処理ステップ、および、前記シリカ精製ステップ後に前記非晶質シリカを脱色する脱色ステップの少なくとも一方を含む、非晶質シリカの製造方法。【選択図】図１