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Method of producing saccharified solution from used absorbent article

An absorbent, saccharified liquid technology, applied in the fields of biochemical equipment and methods, sugar production, glycosylase, etc., can solve the problem of non-easy separation and removal of superabsorbent polymers

Active Publication Date: 2019-02-05
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, absorbent articles contain pulp fibers together with superabsorbent polymers, and the separation and removal of superabsorbent polymers is not easy, and there is a problem when using used absorbent articles as saccharification raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 48.2 g of citric acid monohydrate and 127.3 g of trisodium citrate dihydrate were dissolved in 2648.6 g of water to prepare 2824.1 g of a 250 mM citrate buffer solution. The pH of citrate buffer is 5. To this citrate buffer solution, 24.7 g of an enzyme solution (Optimase CX15-L manufactured by Genencor International Inc.) was added to prepare 2848.8 g of a saccharification enzyme solution.

[0053] Prepare to dry diapers. The mass of the dry paper diaper was 527.0 g, and the mass of the absorber in the dry paper diaper was 282.4 g, of which 247.1 g was pulp fiber and 35.3 g was SAP. The mass of non-saccharified substances (non-woven fabrics, plastic films, etc.) in dry paper diapers was 244.6g. 1500.0 g of artificial urine (manufactured by dissolving 200 g of urea, 80 g of sodium chloride, 8 g of magnesium sulfate, 3 g of calcium chloride, and about 1 g of pigment: Blue No. 1 in 10 L of ion-exchanged water) was made into this dry paper diaper.

[0054] 2027.0 g of p...

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PUM

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Abstract

A simple method is provided for producing a saccharified solution from a used absorbent article such as a used diaper. In order to produce a saccharified solution from a used absorbent article comprising a non-cellulosic liquid permeable surface material and an absorbent body that contains pulp fibers, the used absorbent article is immersed, without first being decomposed, in a saccharifying enzyme solution containing cellulase. The pulp fibers in the used absorbent article are saccharified by the cellulase, producing a saccharified solution. The produced saccharified solution is exuded out ofthe used absorbent article through the liquid permeable surface material, so it is possible to easily separate and recover the saccharified solution from the used absorbent article while maintainingthe outer shape.

Description

technical field [0001] The present invention relates to a method for producing a saccharified liquid from a used absorbent article having a non-cellulosic liquid-permeable surface material and an absorbent body containing pulp fibers. More specifically, the present invention relates to a method of saccharifying pulp fibers contained in used absorbent articles such as paper diapers to obtain a saccharification solution containing glucose. Background technique [0002] Absorbent articles such as disposable diapers generally include: an absorbent body containing pulp fibers and a superabsorbent polymer; and an outer body such as a non-woven fabric or a plastic film that wraps it. These absorbent articles are discarded and incinerated after use, but in recent years, in consideration of the environment, studies have been made to recover and recycle raw materials constituting absorbent articles. For example, there are attempts to saccharify pulp fibers contained in used absorbent...

Claims

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Application Information

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IPC IPC(8): C12P19/14C13K1/02
CPCC12P19/02C12P19/14C13K1/02C12Y302/01004
Inventor 小西孝義平冈利夫八卷孝一龟田范朋
Owner UNI CHARM CORP