Preparation and application of a flax adsorbent

Abstract

The invention discloses a preparation method and application technology of an epoxy chloropropane modified flax adsorbent. The preparation method is characterized by washing waste short fiber flax of a flax textile factory by using water, drying and crushing; processing by using NaOH and OP water solution and drying to obtain degummed flax; adding the following components in percentage by mass in a reactor: 22-40% of epoxy chloropropane, 12-25% of degummed flax, 4-8% of NaOH, 5-10% of isopropyl alcohol and 32-55% of water, wherein the sum of all the components is 100%; stirring at the constant temperature of 55-65 DEG C, carrying out backflow reaction for 1.0-4h, cooling, washing by using de-ionized water, carrying out suction extracting and filtering until the filtrate is neutral, washing by using a small amount of ethanol, drying in a 50-55 DEG C vacuum drying box, so as to obtain the epoxy chloropropane modified flax. The adsorbent has very high adsorbing capacity to basic dye, has high regeneration property, can be used repeatedly for several times, and is low in cost and environment-friendly.

Description

technical field

[0001] The invention relates to a preparation method of a biological adsorbent and the technical field of application of dye adsorption in industrial wastewater, in particular to a preparation method of an epichlorohydrin modified flax adsorbent and an application technology for adsorption and separation of basic dyes in sewage. Background technique

[0002] Resource shortage and environmental pollution have become two major problems in today's world. Therefore, using natural renewable resources to develop environmentally friendly products and technologies will become an inevitable trend of sustainable development. Flax is an annual herb, one of the most valuable ecological resources and a renewable resource. At present, the planting area of ​​flax in the country is more than 3 million mu, and the output of long fiber is generally about 60kg / mu. As a textile fiber, flax has a series of excellent properties, such as softness, good luster, crispness, coolness, ...