A kind of hydrogel for soil improvement and its preparation method and application

A soil improvement and hydrogel technology, applied in the fields of application, soil conditioning materials, chemical instruments and methods, etc., can solve the problems of no obvious advantages and complicated preparation process, saving energy consumption and chemical reagent costs, and large-scale application. Foreground effect
CN108148208BActive Publication Date: 2021-01-19QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Publication Date
2021-01-19

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Abstract

The invention belongs to the field of high value conversion and utilization of biological waste, in particular to a soil improving hydrogel, a preparation method thereof and application thereof. The hemicellulose-containing wastewater is used as a solvent, mixed with a hydrogel monomer and a crosslinking agent, and a crosslinked polymer obtained by polymerization is a hydrogel. The water-retainingagent provided by the invention can directly use the hemicellulose-containing wastewater as the solvent, thereby eliminating the high energy consumption and chemical reagent costs of separation and purification of hemicellulose; oligosaccharide rich therein and phosphorus and potassium and other elements added during the preparation process can be used as a supplementary nutrient for crops and soil microorganisms to promote the water retention performance of a soil ecological improving agent and microbial colonization. The other components in by-products are utilized, and no wastewater is discharged during the entire utilization process, thereby providing an economical and environment-friendly route for hemicellulose treatment in the pulping and viscose fiber industries.
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Description

technical field

[0001] The invention belongs to the field of high-value conversion and utilization of biological waste, and specifically relates to a hydrogel for soil improvement, a preparation method and application thereof. Background technique

[0002] Under the current pressure of resources and environment, more and more attention has been paid to the research on the transformation of materials and energy using bio-renewable raw materials. Hemicellulose is one of the most abundant renewable resources in the world as the second only to cellulose in plant resources. However, due to the complexity and diversity of the composition and structure of hemicellulose, it has not been fully applied. In particular, the treatment and application of a large number of hemicellulose by-products produced in the pulping and viscose fiber industries has always been a hot spot in the relevant industries. Most of these hemicellulose-containing by-products have low fuel value and high wate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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