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Application of surfactant modified goethite in removal of microcystis aeruginosa

A technology of surfactant and Microcystis aeruginosa, which is applied in the direction of sterilization/microdynamic water/sewage treatment, special treatment targets, light water/sewage treatment, etc., and can solve problems affecting the removal effect of algae

Active Publication Date: 2019-04-16
CHINA THREE GORGES UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

After the traditional clay minerals and algae cells are flocculated, the flocs are resuspended due to water flow movement, which affects the algae removal effect

Method used

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  • Application of surfactant modified goethite in removal of microcystis aeruginosa
  • Application of surfactant modified goethite in removal of microcystis aeruginosa
  • Application of surfactant modified goethite in removal of microcystis aeruginosa

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Embodiment Construction

[0019] Realize that the used reagent of technical scheme of the present invention and instrument are as follows:

[0020] Main experimental reagents: cetyltrimethylammonium chloride (CTAC, Aladdin's reagent, AR); cetyltrimethylammonium bromide CTAB, Aladdin's reagent, AR); cetyldimethylammonium Benzyl ammonium chloride (HDTMA, Aladdin's reagent, AR); octadecyltrimethylammonium bromide (ODTMA, Sigma Aldrich, AR); goethite (Sigma Aldrich, AR).

[0021] Main experimental instruments: ultra-clean bench (SW-CJ-1F, Wujiang Weifeng Purification Equipment Co., Ltd.); autoclave (SYQ-DSY-280B, Shanghai Shen’an Medical Instrument Factory); light incubator (PGX- 250B, Ningbo Haishu Saifo Experimental Instrument Factory); ultraviolet-visible spectrophotometer (UV-Vis DRS, Lambda25, the United States); pH meter (Delta 320, Mettler-Toledo, Shanghai Co., Ltd.); X-ray diffractometer (XRD, D / max2500, Rigaku, Japan); cold-field scanning electron microscope (SEM, JSM-7500F, JEOL, Japan); total o...

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Abstract

The invention provides application of surfactant modified goethite in removal of microcystis aeruginosa. A surfactant includes cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, cetyldimethylbenzylammonium chloride or octadecyltrimethyl bromide ammonium. Specifically, the surfactant is dissolved in water, the goethite is added to a dissolving solution, stirring and centrifuging are conducted, a supernatant is discarded, lyophilizing is conducted, and grinding is conducted to prepare the surfactant modified goethite. According to the application, in the process of removing the microcystis aeruginosa, a positively charged carbon chain can net-trap and bind negatively charged algae cells, an alkyl chain penetrates algal cell membranes to change the integrity of a phospholipid bilayer, membrane rupturing is caused, a reaction with proteins and nucleic acids in algae is conducted, a bridge between cellulose molecules is relaxed, or protein synthesis is restrained. The goethiteproduces strong oxidative free radicals under the action of lights to attack the algae cells, causes the exudation of organic matters in the algae cells and restrains the growth of the algae cells.

Description

technical field [0001] The invention relates to a surfactant-modified goethite, which is applied to remove Microcystis aeruginosa, and belongs to the technical field of water pollution control. Background technique [0002] Cyanobacterial blooms are now occurring more and more frequently in many countries and have become a global environmental problem. The overgrowth of cyanobacteria makes the water color, odor and toxins harmful to humans, animals and aquatic life, and the overgrowth of algae must be controlled in situ. Microcystis aeruginosa is a well-known algal species that causes cyanobacterial blooms in freshwater lakes and reservoirs worldwide. Some of the common treatment methods are chemical algaecides, clay flocculation, ultrasonic irradiation, large aquatic plants, biotechnology and ultraviolet irradiation. [0003] Among them, clay minerals, as an effective, economical and environmentally friendly material, have been widely concerned and applied to the control ...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F1/50C02F1/72
CPCC02F1/30C02F1/50C02F1/72C02F2303/20
Inventor 李瑞萍任慧君黄应平
Owner CHINA THREE GORGES UNIV
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