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Composition for microorganisms

A technology of microorganisms and compositions, applied in the field of compositions for microorganisms, can solve problems such as inactivation of microorganisms

Active Publication Date: 2017-03-01
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, microorganisms are known to be inactivated at high concentrations of nutrient sources, and extremely diluted nutrient sources have to be delivered to soil and groundwater

Method used

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  • Composition for microorganisms
  • Composition for microorganisms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Example 1 is a mixture obtained by mixing 52% by mass of sorbitol, 9% by mass of glycerin, 2% by mass of a nonionic surfactant, and 37% by mass of water. The ratio of sorbitol to glycerin is "5.7:1". In addition, polyoxyethylene lauryl ether was used as a nonionic surfactant. As water, what boiled normal tap water for 10 minutes and cooled to 25 degreeC was used. The composition and results are shown in Table 4.

[0090]In addition, "G ratio" in Table 4 is "ratio with respect to glycerin", and shows the ratio of the sugar alcohol when glycerin is 1. In addition, in Table 4, "S" represents sorbitol, and "M" represents mannitol.

Embodiment 2

[0091] Example 2 is a mixture obtained by mixing 55% by mass of sorbitol, 10% by mass of glycerin, 2% by mass of a nonionic surfactant, and 33% by mass of water. The ratio of sorbitol to glycerin is "5.5:1". Example 3 is a mixture obtained by mixing 58% by mass of sorbitol, 10% by mass of glycerin, 2% by mass of a nonionic surfactant, and 30% by mass of water. The ratio of sorbitol to glycerin is "5.8:1".

Embodiment 4

[0092] Example 4 is a mixture obtained by mixing 52% by mass of mannitol, 9% by mass of glycerin, 2% by mass of a nonionic surfactant, and 37% by mass of water. The ratio of mannitol to glycerin is "5.7:1".

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Abstract

There are cases when a composition for microorganisms is conveyed to a soil purification site, and subsequently left in a field in a conveyance container. However, when the composition for microorganisms is left for several weeks, a phenomenon in which the composition for microorganisms crystallizes in the conveyance container occurs. This composition for microorganisms, which is capable of purging organochlorine compounds in soil and groundwater, is characterized by being formed from: at least one sugar alcohol selected from sorbitol, mannitol, and xylitol; glycerine; a non-ionic surfactant; and water. The composition for microorganisms is further characterized in that the content of the sugar alcohol is less than 6 times that of the glycerine. This composition for microorganisms does not crystallize in a conveyance container, even if left in a field in the conveyance container.

Description

technical field [0001] The present invention relates to a composition for microorganisms injected into soil and groundwater to purify soil and groundwater by decomposing organochlorine compounds in soil and groundwater by microorganisms. Background technique [0002] The problem of soil and groundwater contaminated by chemical substances is that not only human beings but also the balance of the biological world as a whole are disrupted. From the viewpoint of environmental protection, some kind of countermeasure is required. In addition, leaving the polluted soil and groundwater untreated limits the range of human activities, and countermeasures are also required from an economic point of view. [0003] Conventionally, various methods have been proposed to purify soil and groundwater contaminated by chemical substances, such as lime method, iron powder method, soil excavation and replacement method, soil wet soil cleaning method, and biodegradation method. Most of the contam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/00C09K17/14C02F3/34C02F103/06C02F101/36
CPCB09B3/00C02F3/00
Inventor 安藤卓也清水巧治当田纪贤
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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