Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-stability oil spill dispersant and preparation method thereof

An oil spill dispersant and high stability technology, applied in the field of environmental governance, can solve problems such as biological toxicity, achieve the effects of reducing ecological hazards, improving stability performance, and reducing dosage

Inactive Publication Date: 2017-07-21
DALIAN UNIV OF TECH
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the dispersing effect of commonly used oil spill dispersants has been improved compared with the previous ones, most of them have certain biological toxicity. Efficient and environmentally friendly new dispersants are the top priority

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-stability oil spill dispersant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment discloses a highly stable oil spill dispersant, which is suitable for the treatment of oil spills in marine and fresh water bodies, and is especially suitable for emergency treatment of oil spills in marine and fresh water bodies using chemical methods.

[0028] The preparation method of high stability oil spill dispersant comprises the following steps:

[0029] (1) Modification of chitosan: dissolve 8g chitosan in 440ml (0.2M) acetic acid buffer solution and 300ml ethanol mixed solution, add 220ul (95%) dodecylaldehyde after chitosan is completely dissolved After fully stirring the solution, 4.46 g of sodium borohydride was added. After the reaction was complete, the pH was adjusted to 5.2 with hydrochloric acid, and the resulting mixture was stirred for 24 hours. Sodium hydroxide is used to adjust the pH to 7 so that the hydrophobically modified chitosan is separated out. After centrifugation, the gained hydrophobically modified chitosan is washed with...

Embodiment 2

[0034] This embodiment discloses a high stability oil spill dispersant, the preparation method of which comprises the following steps:

[0035] (1) Modification of chitosan: dissolve 4g chitosan in 220ml (0.2M) acetic acid buffer solution and 150ml ethanol mixed solution, add 110ul (95%) dodecylaldehyde after chitosan is completely dissolved After fully stirring the solution, 2.23 g of sodium borohydride was added. After the reaction was complete, the pH was adjusted to 5 with hydrochloric acid, and the resulting mixture was stirred for 24 hours. Sodium hydroxide is used to adjust the pH to 7 so that the hydrophobically modified chitosan is separated out. After centrifugation, the obtained hydrophobically modified chitosan is washed with 70wt%, 80wt%, 90wt% and 100wt% ethanol solution to remove impurities, and finally the obtained The solid was dried to obtain the experimental hydrophobically modified chitosan solid.

[0036] (2) Preparation of surfactant solution: prepare oi...

Embodiment 3

[0039] This embodiment discloses a high stability oil spill dispersant, the preparation method of which comprises the following steps:

[0040](1) Modification of chitosan: dissolve 8g chitosan in 440ml (0.2M) acetic acid buffer solution and 300ml ethanol mixed solution, add 220ul (95%) dodecylaldehyde after chitosan is completely dissolved After fully stirring the solution, 4.46 g of sodium borohydride was added. After the reaction was complete, the pH was adjusted to 5.2 with hydrochloric acid, and the resulting mixture was stirred for 24 hours. Sodium hydroxide is used to adjust the pH to 7 so that the hydrophobically modified chitosan is separated out. After centrifugation, the gained hydrophobically modified chitosan is washed with 70wt%, 80wt%, 90wt% and 100wt% ethanol solution to remove impurities, and finally the obtained The solid was dried to obtain the experimental hydrophobically modified chitosan solid.

[0041] (2) Preparation of surfactant solution: prepare oil...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a high-stability oil spill dispersant and a preparation method thereof. The preparation method includes following steps: dissolving chitosan in an acetic acid buffer solution and an alcohol mixed solution, adding lauryl aldehyde to adjust pH value to 4-6 after chitosan is completely dissolved, adding sodium borohydride, stirring for reaction at normal temperature for not less than 12h, adjusting pH value to 7-9 to separate out hydrophobic modified chitosan, using alcohol solutions different in concentration to wash hydrophobic modified chitosan, centrifuging, drying to obtain hydrophobic modified chitosan solid, and dissolving the hydrophobic modified chitosan solid in the acetic acid buffer solution for standby use; preparing a surfactant solution; preparing the high-stability oil spill dispersant. The high-stability oil spill dispersant prepared by adopting the method is long in stabilization time, so that consumption of surfactant in the oil spill dispersant is reduced, and damage to environment caused by high consumption of the oil spill dispersant is lowered.

Description

technical field [0001] The invention relates to environmental treatment technology, in particular to a highly stable oil spill dispersant and a preparation method thereof. Background technique [0002] With the rapid development of offshore oil exploration and development, marine oil spill accidents caused by drilling tankers, oil storage equipment and other reasons occur from time to time. Oil spills not only pollute the marine environment, but also cause a sharp decline in marine biological resources, directly or indirectly threaten the living environment of human beings. [0003] Oil spill dispersant is a common emergency means to deal with marine oil spills. The oil dispersant is formulated according to a certain formula from surfactants, solvents and additional ingredients. Its main component is surfactant, which has both lipophilic groups with long molecular chains and short hydrophobic and hydrophilic groups in the surfactant molecules. Its function is to dissolve oi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01F17/00B01F17/02C09K3/32C09K23/00C09K23/02
CPCC09K3/32C09K23/018
Inventor 占敬敬张国志魏通李明飞张译丹
Owner DALIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com