Herba solidaginis dye solution as well as preparation method and purpose thereof

Abstract

The invention discloses a herba solidaginis dye solution as well as a preparation method and purpose thereof. The preparation method of the herba solidaginis dye solution disclosed by the invention is simple in technology and suitable for large-scale industrial production. According to the preparation method disclosed by the invention, after a concentrated solution is prepared, the concentrated solution is directly prepared into the dye solution for dyeing, and the step of treating waste water in the process of continuing concentration and drying on the concentrated solution to obtain solid dye in the prior art is omitted, so that post-treatment of the waste water is simple; and in addition, firstly herba solidaginis is pickled with salt water, so that cell dehydration and cell inactivation are facilitated, the further deposition of pigments is promoted, improvement of subsequent soaking and extracting efficiency is facilitated, the pigment concentration of the obtained herba solidaginis dye solution is high, the soaking and extracting temperature can be reduced, the extracting time can be shortened, the energy consumption can be reduced, the feeding quantity of the herba solidaginis can be reduced, and the cost can be effectively reduced. The herba solidaginis dye solution disclosed by the invention can be used for dyeing plants, the dyeing effects are excellent, the color fastness is high, the color is mild, and various indexes are better than the standard of baby fabric.

Description

technical field [0001] The invention relates to the technical field of natural dyes, in particular to a goldenrod dye solution and a preparation method and use thereof. Background technique [0002] Dyes are substances that can color fibers and other materials and are generally divided into two categories: natural dyes and synthetic dyes. Natural dyes are divided into vegetable dyes and animal dyes. Synthetic dyes, also known as artificial dyes, are mainly fractionated from coal tar (or petroleum processing) and chemically processed. For synthetic dyes, the raw materials are petroleum and coal, which are consumed quickly and are difficult to regenerate. The production and use of synthetic dyes have certain environmental pollution, and the recovery rate of printing and dyeing wastewater of synthetic dyes is low and difficult to treat. For plant dyes, the raw materials are extracted from plants. The production and use of natural plant dyes are compatible with the environment...

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Problems solved by technology

[0005] It was first introduced into my country as a garden ornamental plant in 1935 and planted in Shanghai. In the 1980s, it gradually spread to river beaches, wasteland, roadsides, front and back of houses and some farmlands and caused local damage. The environment is relatively adaptable, so it generally occurs in Zhejiang, Shanghai, Anhui, Hubei, Jiangsu, Jiangxi and other places in my country, and has become a typical malignant weed that is very harmful to the ecological environment. More than 30 indigenous species have died out, accounting for one-tenth of the indigenous species in the Shanghai area, seriously affecting the original vegetation in the Shanghai area, and destroying biodiversity, making it difficult for the indigenous species in those areas to survive. Extensive management of greening The planted green flowering shrubs also died in patches. At the same time, dryland crops such as cotton, corn and soybeans, and paddy fields planted with wild rice stems were eaten away, seriously affecting the yield and quality of these crops.

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