Synergist in microbial remediation process of petroleum-contaminated soil and preparation method of synergist

A technology of soil microorganisms and oil pollution, which is applied in the field of synergist and its preparation in the process of microbial remediation of oil-contaminated soil, which can solve the problems of microbial poisoning, and achieve the effects of increasing utilization speed, growth promotion, and significant biological friendliness

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Adding surfactants is an effective means to strengthen the use of organic nutrition by microorganisms, but the critical micelle concentration (CMC) of commercially available surfactants is relatively high, which will cause toxicity to microorganisms. A new type of surfactant with synergistic effect at low concentration is of great significance to microbial remediation of soil technology

Method used

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  • Synergist in microbial remediation process of petroleum-contaminated soil and preparation method of synergist
  • Synergist in microbial remediation process of petroleum-contaminated soil and preparation method of synergist
  • Synergist in microbial remediation process of petroleum-contaminated soil and preparation method of synergist

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Experimental program
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Embodiment approach

[0037] According to a preferred embodiment of the present invention, the nonionic surfactant is selected from at least one of the following compounds:

[0038] Compound 1: a compound of the structure shown in formula (I), wherein, m is 5, n is 2, R 1 for C 9 h 19 , R 2 It is polyethylene oxide with a degree of polymerization of 10;

[0039] Compound 2: the compound of the structure shown in formula (I), wherein, m is 10, n is 2, R 1 for C 12 h 25 , R 2 It is polyethylene oxide with a degree of polymerization of 20;

[0040] Compound 3: the compound of the structure shown in formula (I), wherein, m is 2, n is 4, R 1 for C 8 h 17 , R 2 It is polyethylene oxide with a degree of polymerization of 7;

[0041] Compound 4: a compound of the structure shown in formula (II), wherein m is 7, n is 3, R 1 for C 9 h 19 , R 2 It is polyethylene oxide with a degree of polymerization of 9;

[0042] The amphoteric surfactant is selected from at least one of dodecyl dimethyl ca...

Embodiment 1

[0057] Compound 1 was prepared by the same method as in Preparation 1 of CN105505365A.

[0058] Similarly, compound 2, compound 3 and compound 4 were prepared by the similar method in preparation example 1 of CN105505365A.

Embodiment 2-7

[0060] Mix nonionic surfactant, amphoteric surfactant and water evenly. The mixing conditions include: adding the nonionic surfactant and the amphoteric surfactant into water at room temperature and a magnetic stirring speed of 250 rpm, and stirring for 10 minutes until fully mixed to obtain synergists S-1 to S-6 respectively. . The formulations of each synergist are listed in Table 1.

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Abstract

The invention relates to the field of microbial remediation of petroleum hydrocarbon contaminated soil, and discloses a synergist in microbial remediation process of petroleum-contaminated soil and a preparation method of the synergist, and the synergist contains a nonionic surfactant, an ampholytic surfactant and water which are stored independently or in a mixed mode; wherein the nonionic surfactant is selected from at least one of a compound with a structure as shown in a formula (I) and a compound with a structure as shown in a formula (II), and the synergist provided by the invention has remarkable biological friendliness, and can remarkably improve the utilization speed of microorganisms on complex organic matters and regulate the growth of functional microorganisms.

Description

technical field [0001] The invention relates to the field of microbial remediation of petroleum hydrocarbon-contaminated soil, in particular to a synergist in the process of microbial remediation of petroleum-contaminated soil and a preparation method thereof. Background technique [0002] Soil pollution is a worldwide problem, and petroleum hydrocarbon pollution to soil is an important type of soil pollution. [0003] During oil drilling, oil production, transportation, and processing, crude oil leaks due to corrosion of oil pipelines and other reasons, and crude oil that falls on the ground is more harmful to soil pollution. Due to the slow degradation rate of petroleum hydrocarbons and the certain toxicity of aromatic hydrocarbons contained in them, it will be harmful to the soil. The environment has a greater impact. [0004] More and more people pay attention to the remediation technology of polluted soil. Currently, restoration techniques include physical restoration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/18B09C1/10C09K101/00
CPCC09K17/18B09C1/10C09K2101/00
Inventor 秦冰高敏巩赫江建林乔富林
Owner CHINA PETROLEUM & CHEM CORP
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