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A kind of preparation method of environment-friendly marine oil spill emulsification dispersant

An emulsifying dispersant and an environmentally friendly technology, which is applied in the field of preparation of an environmentally friendly marine oil spill emulsifying dispersant, can solve the problems of insufficient biological toxicity tests, high cost, and impact, and achieve simple preparation methods, good stability, and broad The effect of applying the foreground

Active Publication Date: 2016-06-08
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used oil dispersants are mainly chemically synthesized organic surfactants, but due to insufficient biological toxicity tests, the stability of the emulsified oil droplets after the oil dispersants are dispersed is affected by the type of crude oil, seawater temperature, salinity, etc. Due to the impact of environmental factors and high cost, the development of dispersants is facing new challenges. Many scientists are committed to developing low-toxic and high-efficiency dispersants in order to eliminate the toxicity to marine organisms

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of an environment-friendly marine oil spill emulsification dispersant, the specific steps are as follows:

[0019] (1) Preparation of positively charged nano-silica: using an organic solvent to gamma -Aminopropyltriethoxysilane modifiers Prepare amino modifier solutions with different concentrations, soak nano-silica in the amino modification solution for modification, control the reaction temperature at 40°C, and the reaction time for 12 hours, After the reaction is completed, the nano silicon dioxide is cleaned and dried to obtain positively charged nano silicon dioxide;

[0020] (2) Preparation of biomolecule-modified nano-silica: disperse the positively charged nano-silica treated in step (1) in the water phase, and configure rhamnolipids into negatively charged rhamnolipids solution, and mixed with the positively charged nano silicon dioxide dispersed in the water phase, the concentration of the controlled positively charged nano silicon dioxi...

Embodiment 2

[0024] A preparation method of an environment-friendly marine oil spill emulsification dispersant, the specific steps are as follows:

[0025] (1) Preparation of positively charged nano-silica: using an organic solvent to gamma -Aminopropyltriethoxysilane modifiers Prepare amino modifier solutions with different concentrations, soak nano-silica in the amino modification solution for modification, control the reaction temperature at 45°C, and the reaction time for 14 hours, After the reaction is completed, the nano silicon dioxide is cleaned and dried to obtain positively charged nano silicon dioxide;

[0026] (2) Preparation of biomolecule-modified nano-silica: disperse the positively charged nano-silica treated in step (1) in the water phase, and configure rhamnolipids into negatively charged rhamnolipids solution, and mixed with the positively charged nano silicon dioxide dispersed in the water phase, the concentration of the controlled positively charged nano silicon dioxi...

Embodiment 3

[0030] A preparation method of an environment-friendly marine oil spill emulsification dispersant, the specific steps are as follows:

[0031] (1) Preparation of positively charged nano-silica: using an organic solvent to gamma -Aminopropyltriethoxysilane modifiers Prepare amino modifier solutions with different concentrations, soak nano-silica in the amino modification solution for modification, control the reaction temperature at 50°C, and the reaction time for 16 hours, After the reaction is completed, the nano silicon dioxide is cleaned and dried to obtain positively charged nano silicon dioxide;

[0032] (2) Preparation of biomolecule-modified nano-silica: disperse the positively charged nano-silica treated in step (1) in the water phase, and configure rhamnolipids into negatively charged rhamnolipids solution, and mixed with the positively charged nano-silica dispersed in the water phase, the concentration of the controlled positively charged nano-silica is 20g / L, and t...

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Abstract

The invention discloses a method for preparing an environment-friendly marine oil spill emulsifying dispersant. The specific steps include the preparation of positively charged nano-silica, the preparation of nano-silica modified by biomolecules, and the preparation of finished products. The principle of synergistically stabilizing the emulsion with biological molecules realizes the self-assembly of nano-silica and bio-molecules with opposite charges through electrostatic interaction, thereby modifying the surface of nano-silica to obtain finished products. The preparation method of the invention is simple, the obtained emulsified dispersant has good stability, the emulsified oil droplet particle size is small, has the characteristics of temperature resistance and salt resistance, is suitable for the marine environment, can quickly emulsify and disperse oil spills, is environmentally friendly, and avoids chemical oil dispersants from being used in the ocean. The toxicity brought by the environment does not cause secondary pollution to waters, is non-toxic and harmless to organisms, and has a high biodegradation rate. The emulsification rate can reach more than 60% when reacting for 30 seconds, and the emulsifying rate can reach more than 30% when reacting for 10 minutes. application prospects.

Description

technical field [0001] The invention relates to an oil dispersant, in particular to a preparation method of an environment-friendly marine oil spill emulsification dispersant. Background technique [0002] With the acceleration of the global industrialization process, oil spill accidents occur frequently, and the hazards of oil spill pollution intensify. In order to reduce oil spill pollution in the short term, oil dispersants are used more and more widely after marine oil spills are removed by physical methods. When the oil dispersant repairs the marine oil spill, it mainly uses the amphiphilicity of the surfactant to emulsify and disperse the marine oil spill into fine suspended oil droplets, which drift and spread with the waves, so that the spilled oil is more likely to be oxidized by dissolved oxygen in water or Microbial degradation reduces the impact on marine aquatic animals and plants, avoids seabird contamination and oil spills ashore, and reduces the impact on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/32A62D3/30A62D101/20
Inventor 李一鸣皮桂璐龚海月张健瑞包木太王爱芹
Owner OCEAN UNIV OF CHINA
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