Method for preparing transparent soap by irradiating waste oil

Abstract

The invention relates to a method for preparing transparent soap by performing irradiation treatment on illegal cooking oil. The method comprises the following steps: firstly, performing centrifugal separation on the illegal cooking oil to remove impurities, and sealing by using a sealing bottle; uniformly irradiating the sealing bottle filled with the illegal cooking oil by using cobalt source rays for 5-10 minutes with the auxiliary dosage of 1-5KGy at the room temperature; filtering the irradiated illegal cooking oil, adding sodium hydroxide ethanol solution to be saponified to obtain soap paste; adding ethanol, crane sugar, distilled water and waste soap into the soap paste to be fully stirred until the soap paste is saponified; pouring the saponified soap paste into a mould to be cured and dried to obtain the transparent soap. According to the method, the illegal cooking oil is irradiated by using the cobalt rays, a DNA sequence, a protein structure and the like in bacteria tissue in the illegal cooking oil can be destroyed to cause the death of the bacteria; meanwhile, volatile odor substances in the illegal cooking oil can be modified; the prepared transparent soap has the characteristics of shallow color, asepsis, no odor and long expiration date; the soap body has a uniform crystal structure, and is high in transparency and high in foaming capability; moreover, the harmless resource utilization of the illegal cooking oil can be realized.

Description

technical field [0001] The invention relates to the field of preparing transparent soap with waste oil, in particular to a method for preparing transparent soap with radiation treatment waste oil. Background technique [0002] In 2013, China consumed about 30 million tons of edible oils and fats, 15% of which, about 4.5 million tons, became waste oils and fats. Since 2009, the price of cooking oil has risen sharply, and the net profit of waste cooking oil has also increased. Driven by profit, most of the gutter oil is used by criminals as a raw material for the production of edible oil to endanger the society. [0003] Although it has lost its edible value, the main components of gutter oil are still triglycerides and free fatty acids with varying contents. Triglycerides and free fatty acids can all undergo saponification with alkali to form soap, that is, detergent soap, washing powder, etc. main ingredient. Although saponification is the core process of preparing soap a...

AI Technical Summary

Problems solved by technology

Although saponification is the core process of preparing soap and other detergents, if you want to use gutter oil to obtain qualified products, you need to pretreat the gutter oil, such as deodorization, disinfection and sterilization, and at the same time, if you want to make transparent soap with beautiful color and luster Also need to carry out decolouring treatment to waste oil, yet the research report of this respect is seldom, the problem to be solved urgently in existing research has: one, how to decolorize waste oil pretreatment stage, deodorize, eliminate wherein a large amount of poisonous viruses such as germs etc. Harmful microorganisms; 2. How to make transparent soap from gutter oil

[0004] At present, some scholars are committed to solving the above problems, such as using oily feet instead of part of the oil to produce transparent soaps, which improves the utilization of oily feet, reduces the production cost of transparent soaps, and improves the performance of transparent soaps. Ma Yongmei, Sichuan Chemical Industry and Corrosion Control, 2002, May, 5; A transparent soap was developed by saponification reaction using edible corn oil, palm kernel oil, and castor oil as the main raw materials, supplemented with stearic acid, Liu Xiaoling, Applied Chemical Industry, 2010, 39, 12; There is also the use of cattle and sheep crude oil, which is first pretreated (alkali refining, decolorization and filtration, etc.), and then saponified to produce transparent soap, but the cost of this method is relatively high, and the steps in the pretreatment stage are too cumbersome, and the final product Transparent soap is translucent, Yu Zhanfeng, Liu Yali, Deng Jianru, Daily Chemical Industry, 2004.34, 6

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