Method for preparing nitrogen and potassium contained superabsorbent resin from carboxymethyl potato residues

A technology of superabsorbent resin and potato residue, which is applied in the field of preparation of superabsorbent resin, can solve the problems of environmental pollution, waste of resources, large amount of slag discharge, etc., and achieve the effects of simple preparation method, cost saving and production cost reduction

Active Publication Date: 2014-10-01
INNER MONGOLIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A large amount of waste potato slag is produced in the production process of potato starch, generally 7.5 tons of waste slag is produced per ton of starch, and the amount of slag discharged is very large. If it is not recycled, it will not only cause waste of resources, but also cause serious environmental pollution.

Method used

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  • Method for preparing nitrogen and potassium contained superabsorbent resin from carboxymethyl potato residues
  • Method for preparing nitrogen and potassium contained superabsorbent resin from carboxymethyl potato residues
  • Method for preparing nitrogen and potassium contained superabsorbent resin from carboxymethyl potato residues

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Example 1: 3.64g of potassium hydroxide was weighed, and 20.0ml of deionized water was taken to prepare a potassium hydroxide solution, and 9.375g (8.93ml) of acrylic acid was neutralized under the conditions of cooling and stirring in an ice-water bath. Weigh 2.50g carboxymethyl potato residue, 3.125g acrylamide, 150.00mg potassium persulfate, 115.5mg sodium bisulfite, 25.00mg N,N'-methylenebisacrylamide, measure 25.0ml deionized water, All were added into the reactor, and the prepared acrylic acid and its potassium salt solution were poured into the reactor, and stirred at room temperature for 1.0 h to make it evenly mixed. Stir and heat under the protection of nitrogen, while controlling the heating rate to slowly increase the temperature of the water bath, and stop stirring when the temperature rises to 30-35°C. Afterwards, gradually increase the temperature, and when the water in the water bath reaches boiling point, continue heating to make it react within the tem...

Embodiment 2

[0019] Example 2: 2.91g of potassium hydroxide was weighed, and 20.0ml of deionized water was taken to prepare a potassium hydroxide solution, and 7.5g (7.14ml) of acrylic acid was neutralized under the conditions of cooling and stirring in an ice-water bath. Weigh 2.50g carboxymethyl potato residue, 7.5g acrylamide, 250.00mg potassium persulfate, 192.5mg sodium bisulfite, 30.00mg N,N'-methylenebisacrylamide, measure 25.0ml deionized water, All were added into the reactor, and the prepared acrylic acid and its potassium salt solution were poured into the reactor, and stirred at room temperature for 1.0 h to make it evenly mixed. Stir and heat under the protection of nitrogen, while controlling the heating rate to slowly increase the temperature of the water bath, and stop stirring when the temperature rises to 25-30°C. Afterwards, gradually increase the temperature, and when the water in the water bath reaches boiling point, continue heating to make it react within the tempera...

Embodiment 3

[0020] Example 3: 6.12g of potassium hydroxide was weighed, and 20.0ml of deionized water was taken to prepare a potassium hydroxide solution, and 13.125g (12.5ml) of acrylic acid was neutralized under the conditions of cooling and stirring in an ice-water bath. Weigh 2.50g carboxymethyl potato residue, 1.875g acrylamide, 100.00mg potassium persulfate, 77.0mg sodium bisulfite, 25.00mg N,N'-methylenebisacrylamide, measure 25.0ml deionized water, All were added into the reactor, and the prepared acrylic acid and its potassium salt solution were poured into the reactor, and stirred at room temperature for 1.0 h to make it evenly mixed. Stir and heat under the protection of nitrogen, while controlling the heating rate to slowly increase the temperature of the water bath, and stop stirring when the temperature rises to 40-45°C. Afterwards, gradually increase the temperature, and when the water in the water bath reaches boiling point, continue heating to make it react within the tem...

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Abstract

The invention discloses a method for preparing nitrogen and potassium contained superabsorbent resin from carboxymethyl potato residues. The method comprises the main process steps of enabling a potassium hydroxide solution and polymerization inhibitor removed acrylic acid to be subjected to neutralization reaction under the cooling of ice-water bath; adding the neutralized solution into a reaction vessel filled with carboxymethyl potato residues, acrylamide, potassium persulfate, sodium hydrogen sulfite, N, N'-methylenebisacrylamide and deionized water; stirring under the protection of nitrogen gas, heating in water bath, stopping stirring at the temperature of 25-45 DEG C, and preserving heat in boiling water bath for 1-2h; then, stopping introducing nitrogen gas, taking out a product, shearing the product into small blocks, drying the small blocks in a drying oven with the temperature of 40-60 DEG C until the weights of the small blocks are constant, and smashing to obtain the nitrogen and potassium contained superabsorbent resin prepared from carboxymethyl potato residues. Compared with the like product, the superabsorbent resin prepared by using the method disclosed by the invention is greatly improved in water absorbing capacity, low in preparation cost and favorable in application prospect on the aspects such as water retention of soil in drought regions, desert control, plant growth and the like.

Description

technical field [0001] The invention relates to a preparation method of a superabsorbent resin used in the fields of agriculture, forestry, gardening and the like. The superabsorbent resin has been widely used in the above-mentioned fields. The product of the present invention greatly reduces the cost of raw materials due to the rational use of discarded potato residues, and the application of redox initiators greatly reduces the polymerization temperature, so that the prepared superabsorbent resin has excellent performance. In the above-mentioned fields There are broad application prospects. Background technique [0002] A large amount of waste potato slag is produced in the production process of potato starch, generally 7.5 tons of waste slag is produced per ton of starch, and the amount of slag discharged is very large. If it is not recycled, it will not only cause waste of resources, but also cause serious environmental pollution. Discarded potato residues are rich in s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/06C08F220/56C08F222/38C08F4/40
Inventor 温国华冯凯杨永启韩宗壮周硕硕温雪莫国莉李继萍陈超柳青孙萌
Owner INNER MONGOLIA UNIVERSITY
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