Method for preparing fiber-loaded lignin composite adsorption material

Abstract

The invention relates to a method for preparing a fiber-loaded lignin composite adsorption material and belongs to the field of biomass resource utilization and technology. On the hydrolysis conditions, a softened layer is formed between lignin and cellulose; under the effects of sulfur smudging and high temperature, the upper cellulose forms a pore state, the lower lignin undergoes a viscous reaction with sodium chloride and polyaspartic acid water-absorbent resin, so that generated substances enable the cellulose to tightly adhere to the lignin, a structure with the surface only provided with carbonized chemical groups is formed, and the porous surface carbonized cellulose has an adsorption function and can undergo a chemical adsorption reaction with some heavy metals and organic matter remaining in slightly polluted water, so as to transfer surface complexation substances. The method is simple to operate and free of any environmental pollution in the process, the manufactured carbonized cellulose is remarkable in adsorption effect, and it is finally measured that the content of the heavy metals in the slightly polluted water is below 0.8 mg / L.

Description

technical field [0001] The invention relates to a method for preparing a fiber-loaded lignin composite adsorption material, which belongs to the field of biomass resource utilization and technology. Background technique [0002] Lignin is a valuable chemical raw material, and it is also one of the most abundant and renewable natural polymer resources of cellulose and chitin in nature. Land plants in the world can produce 50 billion tons of lignin every year, of which 50 million tons of industrial lignin are produced in the cooking waste liquid of the pulp and paper industry. Human beings have used cellulose for thousands of years, but it was after 1930 that the real study of lignin began, and so far lignin has not been well utilized. Only about 6% of lignin in my country has been utilized. , and after purification, it can only be used as a single reactant. As a by-product of the wood hydrolysis industry and the pulp and paper industry, lignin will become one of the main sour...

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: for lignin containing active groups such as aromatic groups, phenolic hydroxyl groups, alcoholic hydroxyl groups, and carbon-based conjugated double bonds, it can only be used as a single reactant after purification, resulting in that all structural components are not fully obtained. Utilization, resulting in waste of resources, provides a fiber-loaded lignin composite adsorption material preparation method, which fully reacts the chemical activity of the lignin, so that it can fully display its own performance, used for nitrification, polycondensation or Complexation of some heavy metals remaining in slightly polluted water bodies