Biological lipid/high molecular composite adsorbent for removing persistent organism from water and its preparing process

An adsorbent, persistent technology, applied in adsorption water/sewage treatment, other chemical processes, chemical instruments and methods, etc., can solve problems such as unsatisfactory adsorption effect

Active Publication Date: 2006-01-04
江苏金佳源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its adsorption is a surface process. It has no selectivity for the adsorption of organic matter in water, and it is easy to reach saturation. Therefore, it needs to be continuously regenerated. The adsorption effect of low-content, lipophilic persistent organic pollutants that people are most concerned about is not ideal.
At present, there is no better adsorption material for organic matter except activated carbon.

Method used

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  • Biological lipid/high molecular composite adsorbent for removing persistent organism from water and its preparing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: Adsorption and removal of DDT in water

[0015] The ratio of each component of spherical adsorbent is as follows: cellulose acetate: acetone: magnesium perchlorate: triolein: water: Tween 80=10: 70: 3: 4: 12: 1, prepare the particle diameter of adsorbent is 2mm. The adsorbent is used to adsorb and remove DDT in water with a content of 5ng / L-50μg / L, and when the residence time is 5 minutes, the removal rate can reach more than 98%.

Embodiment 2

[0016] Example 2: Adsorption and removal of polychlorinated biphenyls in water

[0017] The ratio of the components of the spherical adsorbent is as follows: cellulose acetate: acetone: magnesium perchlorate: biofat: water: Tween 80 = 12:60:7:8:12:1, and the particle size of the prepared adsorbent is 1mm. With this adsorbent, the removal efficiency of polychlorinated biphenyl substances with a content of 5ng / L-50μg / L in water can reach 100% when the residence time is 10 minutes, and the adsorbent does not reach saturation after continuous operation for 6 months.

Embodiment 3

[0018] Embodiment 3: Adsorption and removal of dieldrin in water, aldrin, epoxy heptachlor, DDT and other organic pesticides

[0019] The ratio of each component of the spherical adsorbent is as follows: cellulose acetate: acetone: magnesium perchlorate: cod liver oil: water: Tween 80=10:70:3:4:12:1, and the particle size of the prepared adsorbent is 3mm. This adsorbent is used to adsorb and remove organic pesticides with a content of 5ng / L-50μg / L dieldrin, aldrin, epoxy heptachlor, DDT and other organic pesticides in water. When the residence time is 12 minutes, the removal rate of various organic substances is average. It can reach more than 98%, and the adsorption rate increases with the increase of the octanol-water partition coefficient of the organochlorine pesticide.

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Abstract

The present invention discloses a kind of spherical composite biolipid / polymer adsorbent for removing persistent organic pollutant from water and its preparation process, and belongs to the field of water treating technology and application. The acetone solution of biolipid and polymer material is dropped into condensing agent to form spherical adsorbent. The adsorbent has hydrophilic polymer film in the outer surface capable of reaching maximum exchange with solute in water solution, and hydrophobic biolipid embedded inside cellulose acetate polymer architecture to form several micro biolipid bank. The persistent organic pollutant in water is enriched via the micropores in the surface of the polymer film and adsorbed onto biolipid, so as to be removed.

Description

field of invention [0001] The invention relates to an adsorbent for removing persistent organic matter in drinking water, in particular to a porous bionic adsorption material containing biological lipids and a preparation process thereof, belonging to the field of water treatment technology and application. Background of the invention [0002] In the 20th century, especially since the 1950s, the rapid development of the chemical industry has increased the types and quantities of artificially synthesized organic substances. Among them, persistent organic pollutants (POPs for short) are mostly carcinogenic, teratogenic and mutagenic. Moreover, it is difficult to degrade in the environment, and can be transferred and enriched in organisms through the food chain. It is widely present in various environmental media such as air, water, sediment, soil, etc., as well as food, animals, plants, and human bodies. It is harmful to human health and ecology. The environment poses a seriou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01J20/22
Inventor 刘会娟曲久辉代瑞华茹加
Owner 江苏金佳源科技有限公司
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