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Environment-friendly oil spill dispersant and preparation method thereof

An oil spill dispersant, an environmentally friendly technology, applied in the field of emergency response to oil spill pollution, can solve the problems of low safety and high toxicity, achieve efficient removal, easy biodegradation, and reduce secondary pollution effects

Active Publication Date: 2020-08-14
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of high toxicity and low safety caused by the existing oil spill dispersant containing a large amount of organic solvents, the purpose of this invention is to provide a water-based Solvent, environmentally friendly oil spill dispersant emulsifying and dispersing active substances with compound bio-based surfactant and preparation method thereof

Method used

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  • Environment-friendly oil spill dispersant and preparation method thereof
  • Environment-friendly oil spill dispersant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] (1) Put 50Kg of sophorolides in a 500L glass reactor, add 100L of water and 160L of ethanol in turn, stir to form a homogeneous phase, add 1mol / L potassium hydroxide solution to adjust the pH value of the reaction solution to 9-10, at room temperature Stir for 1h, then neutralize with 1mol / L sulfuric acid, filter to remove the precipitate; add Pd / C catalyst to the filtrate, and react for 24h under the protection of hydrogen; then filter to remove Pd / C, and distill off the solvent under reduced pressure to obtain deacetylated acid sophorolipids (such as figure 1 shown).

[0024] (2) In a 100L reactor, add 50L of water as a solvent and heat to keep the temperature of the reactor at 30°C; then add 20% rhamnolipid by mass and stir to dissolve; then add Than 10% deacetylated acidic sophorolipids, stirring and dissolving; then adding mass proportions of 5% sophorolipids and mass proportions of 15% alkyl glycosides, stirring and dissolving; adjusting the pH to Between 7.5 an...

Embodiment 2

[0027] (1) Put 40Kg of sophorolides in a 500L glass reactor, add 80L of water and 140L of ethanol in turn, stir to form a homogeneous phase, add 1mol / L potassium hydroxide solution to adjust the pH value of the reaction solution to 9-10, at room temperature Stir for 1h, then neutralize with 1mol / L dilute hydrochloric acid solution, filter to remove the precipitate; add Pd / C catalyst to the filtrate, and react for 24h under the protection of hydrogen; then filter to remove Pd / C, and distill off the solvent under reduced pressure to obtain Acetylated acid sophorolipids.

[0028] (2) In a 100L reactor, add 75L of water as a solvent and heat to keep the temperature of the reactor at 40°C; then add 10% rhamnolipid by mass and stir to dissolve; then add than 5% deacetylated acidic sophorolipids, stirring and dissolving; then adding mass proportions of 2% sophorolipids and mass proportions of 8% alkyl glycosides, stirring and dissolving; adjusting the pH to Between 7.0 and 7.5, the ...

Embodiment 3

[0031] (1) Put 30Kg of sophorolides in a 500L glass reactor, add 60L of water and 120L of ethanol in turn, stir to form a homogeneous phase, add 0.5mol / L potassium hydroxide solution to adjust the pH value of the reaction solution to 9-10, room temperature Stir for 1 h, then neutralize with 0.5 mol / L dilute sulfuric acid solution, filter to remove the precipitate; add Pd / C catalyst to the filtrate, and react for 24 h under the protection of hydrogen; then filter to remove Pd / C, and remove the solvent by distillation under reduced pressure. Deacetylated acid sophorolipids are obtained.

[0032] (2) In a 100L reaction kettle, add 80L of water as a solvent and heat to keep the temperature of the reaction kettle at 50°C; then add rhamnolipid with a mass ratio of 5% and stir to dissolve; then add than 5% deacetylated acidic sophorolipids, stirring and dissolving; then adding mass proportions of 3% sophorolipids and mass proportions of 7% alkyl glycosides, stirring and dissolving; a...

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Abstract

The invention discloses an environment-friendly oil spill dispersant and a preparation method thereof. The oil spill dispersant is prepared by compounding water serving as a solvent and various bio-based surfactants serving as emulsifying and dispersing active substances, wherein the bio-based surfactant comprises a non-ionic bio-based surfactant and an anionic bio-based surfactant, and the bio-based surfactant comprises the following components in percentage by mass: 50-80% of water, 10-25% of the non-ionic bio-based surfactant and 10-25% of the anionic bio-based surfactant; and the pH valueis 6.5 to 8.0. Compared with the performance of an oil spill dispersant in GB18188.2-2000, the oil spill dispersant obtained by the invention has the advantages that the emulsification rate is improved by 10%, the biodegradability is improved by 15%, the biotoxicity is reduced by about 15%, and the oil spill dispersant has the advantages of high efficiency, low toxicity, easiness in biodegradationand the like. By applying the oil spill dispersant obtained by the invention, the secondary pollution caused by the use of the oil spill dispersant can be reduced while the oil spill pollution on thesea surface is efficiently removed.

Description

technical field [0001] The invention belongs to the field of emergency treatment of oil spill pollution, and in particular relates to an environmentally friendly oil spill dispersant which uses water as a solvent and a compounded bio-based surfactant as an emulsifying and dispersing active component and a preparation method thereof. Background technique [0002] With the increasingly intense offshore oil exploration and transportation activities, frequent oil spill accidents have become one of the major disasters facing the marine ecological environment. Rational use of oil spill dispersants is one of the most important methods for oil spill emergency response in countries all over the world. Oil spill dispersant can effectively reduce the interfacial tension of oil and water. With the help of wind and waves, the crude oil on the sea surface will be emulsified and dispersed into oil-in-water particles and spread in the water body, which not only greatly enhances the volatili...

Claims

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Application Information

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IPC IPC(8): C09K3/32B01F17/56B01F17/22B01F17/00C09K23/00C09K23/22C09K23/56
CPCC09K3/32C09K23/00C09K23/018Y02A20/204
Inventor 梁生康李俊峰刘佳铭王哲陆金仁
Owner OCEAN UNIV OF CHINA
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