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Method for preparing reversible floating oil recycling agent with rod-like titanium dioxide array supported by surface of light inorganic particle

A technology of inorganic particles and surface loading, applied in the field of preparation of reversible oil slick recovery agent, can solve the problems of ineffective recovery of valuable slick oil, low chemical stability of carrier substances, limited hydrophobicity and specific surface area, etc. The raw materials are easy to obtain without pollution, the use cost is low, and the price is low.

Active Publication Date: 2019-08-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unlike chemical digestion, which only temporarily "dissolves" oil pollution and introduces new chemical pollution into the water, physical adsorption is a green and pollution-free recovery method, mainly using oil-absorbing blankets and oil-absorbing cotton to recover oil slicks, but the main purpose of this adsorption material The disadvantage is that the chemical stability of the carrier substance is not high, and there are certain difficulties in post-processing
It is a more effective way to use hydrophobically modified light inorganic particles to absorb and recover floating oil. The main components of this kind of particles are ceramic-like components that are resistant to high temperature and acid and alkali. They are safe to use and low in price. However, the inorganic lightweight particles that can float usually have a closed-cell structure with a hollow interior but a smooth surface, with limited hydrophobicity and specific surface area, resulting in insufficient adsorption capacity for slick oil.
In addition, this inorganic particle-based recovery agent has certain difficulties in the later separation after recovering the oil slick, and it cannot effectively recover the valuable slick oil, and the simple roasting treatment will cause a lot of waste

Method used

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  • Method for preparing reversible floating oil recycling agent with rod-like titanium dioxide array supported by surface of light inorganic particle
  • Method for preparing reversible floating oil recycling agent with rod-like titanium dioxide array supported by surface of light inorganic particle
  • Method for preparing reversible floating oil recycling agent with rod-like titanium dioxide array supported by surface of light inorganic particle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Mix ethanol, water, vinyltriethoxysilane (KH171) and glacial acetic acid in a mass ratio of 48:1:0.5:0.5 to obtain 50g of solution, stir evenly and place for 5min, then add 3g of powder to the solution Coal ash particles, slowly add 0.5 g of tetrabutyl titanate (TBT) under stirring conditions, and continue to stir for 30 min. The solution was left to stand, and after the mixed system was layered, the floating fly ash particles in the upper layer were separated, dried at 80°C, and then calcined at 500°C for 2 hours to obtain loaded TiO 2 Seed fly ash particles.

[0036] (2) Mix 20 mL of concentrated hydrochloric acid with 20 mL of water, slowly add 2 mL of TBT under stirring, and continue stirring until the system is transparent. The solution was transferred into a 50 mL reaction kettle, 2 g of the fly ash particles obtained in step (1) were added, and the reaction was carried out at 150° C. for 6 hours. The fly ash particles were separated, the surface was cleaned...

Embodiment 2

[0039] (1) Mix ethanol, water, vinyltriethoxysilane (KH171) and glacial acetic acid in a mass ratio of 48:1:0.5:0.5 to obtain 50g of solution, stir evenly and place for 5min, then add 3g of pearls to the solution rock particles, slowly add 0.5 g of tetrabutyl titanate (TBT) under stirring conditions, and continue stirring for 30 min. The solution was left to stand, and after the mixed system was layered, the floating perlite particles in the upper layer were separated, dried at 80°C, and then calcined at 500°C for 2 hours to obtain loaded TiO 2 Seed perlite particles.

[0040] (2) Mix 20 mL of concentrated hydrochloric acid with 20 mL of water, slowly add 2 mL of TBT under stirring, and continue stirring until the system is transparent. The solution was transferred into a 50 mL reaction kettle, 2 g of the perlite particles obtained in step (1) were added, and the reaction was carried out at 150° C. for 6 hours. The composite particles were separated, the surface was cleaned,...

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Abstract

The invention discloses a method for preparing a reversible floating oil recycling agent with rod-like TiO2 arrays supported by surfaces of light inorganic particles. The method comprises the following steps: by taking inorganic particles as a supporter, conducting modes of seed supporting and hydro-thermal synthesis to synthesize rod-like TiO2 arrays on surfaces of inorganic supporter particles,and modifying the rod-like TiO2 arrays, so as to obtain the reversible floating oil recycling agent with the rod-like TiO2 arrays supported by the surfaces of the light inorganic particles. The reversible floating oil recycling agent is low in cost, high in use security, simple in preparation method, convenient to use and simple to recycle, floating oil after oil absorption is easy to desorb, recycling and reuse of floating oil with use values can be facilitated, and the recycling agent can be repeatedly used.

Description

technical field [0001] The invention belongs to the field of water surface oil slick adsorbents, in particular to the surface-loaded rod-shaped TiO of light inorganic particles 2 A method for preparing an array of reversible oil slick recovery agents. Background technique [0002] Due to its easy diffusion characteristics, light oil slicks are easy to form oil films on the water surface, isolate water and air, and cause hypoxia in aquatic animals and plants. Effective methods need to be removed to avoid catastrophic consequences for aquatic organisms. Unlike chemical digestion, which only temporarily "dissolves" oil pollution and introduces new chemical pollution into water, physical adsorption is a green and pollution-free recovery method. It mainly uses oil-absorbing blankets and oil-absorbing cotton to recover oil slicks. The disadvantage is that the chemical stability of the carrier material is not high, and there are certain difficulties in post-processing. Using hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/30B01D17/022B01J20/34
CPCB01D17/0202B01J20/103B01J20/08B01J20/041B01J20/0211B01J20/3483
Inventor 王金刚王秀娟韩树伟
Owner UNIV OF JINAN