TH10140A3 - Silica gel production process from rice husk ash for use in adsorption of additives in Biodiesel production - Google Patents

Abstract

DC60 (06/02/58) Silica gel production process from rice husk ash for adsorption of additives in biodiesel production. Synthetically From rice husk ash, which has low sulfur content Add to the sodium hydroxide solution at 65 ° C, stirring constantly for 1 hour to form silica compounds in aqueous solution when the resulting solution is adjusted to pH with 7. With 1 molar concentrated hydrochloric acid (HCl) solution, then incubated for 18 hours, a gel is formed. The resulting gel is cured and the water content of the gel is controlled. Moisture in the range of 30-50 percent kg water / kg wet material. Therefore, the adsorbent was used to absorb impurity in biodiesel, water in silica compound in this amount, will improve the efficiency of adsorption of impurity in biodiesel. Silica gel production process from rice husk ash for use in absorbing additives in biodiesel production. Synthetically From rice husk ash, which has low sulfur content Add to the sodium hydroxide solution at 65 ° C, stirring constantly for 1 hour to form silica compounds in aqueous solution when the resulting solution is adjusted to pH (pH) at 7. With 1 molar concentrated hydrochloric acid (HCl) solution, then incubated for 18 hours, a gel is formed. The resulting gel is cured and the water content of the gel is controlled. Moisture in the range of 30-50 percent kg water / kg wet material. Therefore, biodiesel adsorbent, water in silica compounds in this amount will increase the efficiency of adsorption of dopants in biodiesel.

Claims (1)

1. Silica gel production process from rice husk ash for use in absorbing additives in biodiesel production. The steps are as follows. 1.1 Preparation of rice husk ash used for synthesis as silica gel adsorber was passed through a 2.83 mm sieve to sort the size and separate soil and leaf litter. The rice husk ash was black and the wet and dry base moisture content was 060 percent, kg water / kg wet material and 0.75 percent kg water / kg dry material, respectively, and then washed with distilled water to clean dust. The rice husk ash was dried at 105 degrees Celsius for 4 hours or until the weight remained stable. 1.2 In which 30 g of rice husk ash was added to 1 molar (mol / l) sodium hydroxide (NaOH) 500 ml (ml) in a rose apple flask at 65 ° C for 1 hour with a stirrer. Expressive substance Hot with constant stirring The resulting solution was filtered with a filter set through a No. 4 (4A) filter paper (1 μm opening) and washed the residue with 250 ml (ml) of boiling water, with the top of the filter paper being treated rice husk ash. The bottom part of the reaction is sodium silicate solution (Na2SiO3), then the solution is taken. The bottom that has been set until room temperature 1.3 The resulting sodium silicate solution was titrated. Hydrochloric acid (HCl) solution by 1 molar concentration, titrate slowly. With constant stirring at all times Until the pH (pH) is equal to 7. Measured with a pH meter (pH meter) when set to leave for about 15 minutes will notice agar on the surface. As the solution transfers heat to the atmosphere Then curing (aging) at room temperature for a total of 18 hours to form a soft gel suspended in solution. The appearance of the gel has been transparent. Saturated with water 1.4 When filtering the soft gel with a No. 4 (4A) filter paper and washing the residue with 200 ml of distilled water, it was found that the top of the filter paper was wet gel, the bottom part was the effluent and wet gel. The gel has an average size of 5 mm. Baking in a tile tray at 70 degrees Celsius oven, which is baking (Baking) time 12 hours until moisture in the absorbent 30-50 percent kg water / kg wet material (wet base). Characteristics of the absorbent is translucent. The average size of 3 mm, when finally taken out to be silica gel (Siliga gel) as needed, then the moistened silica gel is placed in the desiccant bowl. To be used to absorb impurities in biodiesel.