Water-retaining agent and preparation method thereof by papermaking sludge

A paper-making sludge and water-retaining agent technology, applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve the problems of poor water-retaining agent compatibility, high cost, low water absorption and retention performance, and achieve Stable performance, easy microbial degradation, and the effect of solving the problem of disposal

Inactive Publication Date: 2012-04-18
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor compatibility, low water absorption and retention performance, and high cost of existing water-retaining agents, and to realize the resource utilization of papermaking sludge, the present invention uses lignin extracted from papermaking sludge as the main raw material to prepare water-retaining agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example one: In this embodiment, the lignin, initiator, monomer, and crosslinking agent extracted from the papermaking sludge are chemically synthesized as a water-retaining agent. The mass percentages are respectively 24.5% lignin, 0.08% initiator, and 75% monomer. Coupling agent 0.42%.

Embodiment 2

[0013] Example two : In this embodiment, the lignin, initiator, monomer, and crosslinking agent extracted from papermaking sludge are chemically synthesized as a water-retaining agent. The mass percentages are 28% lignin, 0.10% initiator, and 71.4% monomer. Crosslinking agent 0.50%.

Embodiment 3

[0014] Embodiment three: In this embodiment, the lignin, initiator, monomer, and crosslinking agent extracted from the papermaking sludge are chemically synthesized as a water retaining agent. The mass percentages are respectively 29% lignin, 0.12% initiator, and 70.3% monomer. Coupling agent 0.58%.

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PUM

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Abstract

The invention discloses a water-retaining agent, which is prepared with a chemical method by that lignin extracted from papermaking sludge is utilized, and meanwhile monomer, initiator and crosslinker are added. The water-retaining agent comprises the following ingredients in percentage by weight: 24-29wt% of the lignin, 0.03-0.15wt% of the initiator, 69-77wt% of the monomer and 0.07-0.6wt% of the crosslinker. The water-retaining agent has the advantages of abundant raw materials, low cost, good performance and high stability, the problem that the traditional water-retaining agent is difficult to degrade and the problems of high preparation cost and poor compatibility are solved, the papermaking sludge processing and disposal problem can also be solved, the sludge is recycled, and small pollution is caused to the environment.

Description

technical field [0001] The invention relates to a water-retaining agent and a preparation method thereof, in particular to a water-retaining agent prepared from papermaking sludge and a preparation method thereof. Background technique [0002] Water retaining agent, also known as super absorbent resin, is a three-dimensional network resin colloid formed by cross-linking organic carbon chains with chemical hydrophilic groups. It is widely used in agriculture, forestry, horticulture, industry, textile, medicine, petrochemical industry, building materials, environmental protection, food and daily necessities because of its high water absorption capacity dozens or even thousands of times its own weight and high water retention performance under pressure without dehydration. etc. The new type of water-retaining agent colloid is favored because of its high hydrophilicity, low toxicity and biodegradable properties. However, if the water-retaining agent is used in agriculture, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F289/00C08H7/00C02F11/00C02F103/28
Inventor 解清杰段明飞吴春笃
Owner JIANGSU UNIV
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