Surface modified enteromorpha and preparation method as well as application thereof

A technology of surface modification and prolifera, applied in the field of materials and environmental engineering, can solve the problems of alarming economic cost and high price, achieve high promotion and application value, increase adsorption capacity, and enrich raw material resources.

Inactive Publication Date: 2016-05-04
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prices of these materials are relatively high, especially when used in large-scale oil spill accidents, the economic cost paid is staggering

Method used

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  • Surface modified enteromorpha and preparation method as well as application thereof
  • Surface modified enteromorpha and preparation method as well as application thereof
  • Surface modified enteromorpha and preparation method as well as application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation method 1 of the hydrophobic and lipophilic surface-modified Enteromorpha:

[0030] 1) Washing treatment: Rinse the Enteromorpha collected by the seaside with tap water 3 times to remove floating impurities therein;

[0031] 2) Soaking and desalting: Soak the washed Enteromorpha in tap water, wherein the weight ratio of Enteromorpha to tap water is 1:100, after soaking for 12 hours, remove Enteromorpha and drain; then place it in a drying box and keep Dry at 50°C for 9 hours;

[0032] 3) the dried algae are placed in 10% C by weight concentration 12 h 25 Cl 3 Soak in the Si-hexane solution for 12 hours, then take it out, place it in a drying oven, and keep the temperature at 50° C. for 5 hours to dry to obtain the surface-modified Enteromorpha enteromorpha.

Embodiment 2

[0034] The preparation method 2 of the hydrophobic and lipophilic surface modified Enteromorpha:

[0035] 1) Washing treatment: wash the Enteromorpha collected by the seaside with tap water 4 times to remove floating impurities therein;

[0036] 2) Soaking and desalting: Soak the cleaned Enteromorpha in tap water, wherein the weight ratio of Enteromorpha to tap water is 1:150, after soaking for 14 hours, remove Enteromorpha and drain; then place it in a drying box for maintenance Dry at 60°C for 11 hours;

[0037] 3) the dried algae body is placed in 10% (weight percent concentration) C 8 h 17 Cl 3 Soak in the Si-hexane solution for 18 hours, then take it out, place it in a drying oven, and keep the temperature at 60° C. for 7 hours to dry to obtain the surface-modified Enteromorpha enteromorpha.

Embodiment 3

[0039] Characterization of the above-mentioned hydrophobic and lipophilic surface-modified Enteromorpha:

[0040] The morphology of fresh Enteromorpha was observed by optical microscope. The surface features of Enteromorpha were further observed by scanning electron microscope (SEM) after drying and spraying platinum. Untreated Enteromorpha and the above-mentioned embodiment are processed through organosilane Morphological characteristics of Enteromorpha as figure 1 As shown, the surface morphology of Enteromorpha treated with organosilanes was significantly changed compared with that of untreated Enteromorpha, and its surface was covered with irregular rough film.

[0041] Energy dispersive X-ray spectroscopy (EDS) was used to measure the energy spectrum of Enteromorpha untreated and treated with organosilane, and the electron beam acceleration voltage used was 20kV. The result is as figure 2 As shown, there was no silicon element on the surface of the untreated Enteromor...

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Abstract

The invention belongs to the field of materials and environmental engineering, and relates to hydrophobic and oleophilic surface modified enteromorpha and a preparation method as well as application thereof. A coarse hydrophobic membrane layer is attached to the surface of enteromorpha; the coarse hydrophobic membrane layer attached to the surface is formed by soaking dry and desalted enteromorpha into organic phase liquid and then drying, and the surface modified enteromorpha is obtained by attaching the coarse hydrophobic membrane layer to the surface of the enteromorpha. The coarse hydrophobic membrane layer is prepared on the surface of the enteromorpha by adopting a soaking method in a hexane-organosilane solution, and an enteromorpha-organosilane fiber system with super lipophilicity and high hydrophobicity is formed and is used for collecting and treating an oil phase floating on the surface of seawater in an ocean oil spill accident.

Description

technical field [0001] The invention belongs to the field of materials and environmental engineering, and relates to a hydrophobic and lipophilic surface-modified enteromorpha and its preparation method and application. Background technique [0002] With the increasing eutrophication of water bodies, green tides have occurred all over the world, from North America, Europe, to Asia and Oceania in recent years, causing increasingly serious negative impacts on the nearshore ecological environment and tourism economy. In the summer of 2007, the green tide phenomenon formed by the massive proliferation of Ulva genus Enteromorpha was discovered for the first time in the Yellow Sea of ​​my country. The overall distribution area and density were small, and more than 7,000 tons of fresh algae were salvaged. In the summer of 2008, another large-scale green tide broke out in the Yellow Sea. In this green tide, the green algae covered an area of ​​about 540 square kilometers, and the se...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28
CPCB01J20/24B01J2220/4825C02F1/286C02F2103/007
Inventor 赵瑾姜鹏陈华新
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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