Soap powder prepared from kitchen waste grease and preparation method thereof

Abstract

The invention discloses soap powder prepared from kitchen waste grease and a preparation method thereof. The soap powder is prepared from the following formula raw materials in parts by weight: 30-90parts of fatty acid, 10-40 parts of alkali and 1-20 parts of a surfactant. The fatty acid preparation method comprises the following steps: firstly, performing acid treatment on activated carbon, filtering, washing, drying, adding 0.5-12g of activated carbon into 100g of kitchen waste grease and uniformly mixing; heating to 85 to 95 DEG C, and stirring for 15 to 25 minutes; filtering after stirring is completed, and carrying out centrifugal separation on the obtained kitchen waste grease; adding water into the centrifuged kitchen waste grease, stirring and heating to 80-90 DEG C, and mixing; dropwise adding concentrated nitric acid until the pH value is 2-3, stirring for 35-45 minutes, and standing for layering to obtain an oil layer after the reaction is finished; washing the oil layer, and standing for layering to obtain an oil layer; and adding lipase, carrying out a reaction on a shaking table at a speed of 100-130 r / min and a temperature of 50-65 DEG C for 4-8 h, carrying out enzyme deactivation in boiling water for 10-20 min after the reaction is finished, and carrying out centrifugation to obtain an upper oil phase, and drying the upper oil phase to obtain the fatty acid extracted from the kitchen waste grease. The soap powder has the advantages of soap powder environmental protection, high low-temperature volume fraction, good fatty acid decolorization effect and high purity.

Description

technical field [0001] The application relates to the technical field of soap powder production and preparation, in particular to a soap powder prepared from kitchen waste oil and a preparation method thereof. Background technique [0002] Washing powder is an indispensable daily necessities in people's life, but with the continuous strengthening of environmental protection awareness and the real destruction of the natural environment, people gradually realize that washing powder has brought many adverse effects to our natural environment and human health. impact and pollution. Most experiments have proved that long-term use of high-phosphorus washing powder, the phosphorus in the washing powder will directly affect the absorption of calcium by the human body, leading to calcium deficiency in the human body or inducing rickets in children; at the same time, too much phosphorus will cause eutrophication of the water, polluted environment. In addition, strong alkaline phosph...

AI Technical Summary

Problems solved by technology

The first three methods have less demand for kitchen waste oil, immature technology, and not widely used. However, the use of kitchen waste oil to produce biodiesel can not only realize the resource utilization of waste cooking oil, but also partially alleviate the problem of biodiesel oil production. The shortage situation has become one of the research hotspots in recent years

[0004] However, due to the complex composition of kitchen waste oil, in the process of further processing and application of kitchen waste oil, if the decolorization is not good, it will seriously affect its specific application