Preparation method nanometer material loaded BiOBr/fabric and application of nanometer material loaded BiOBr/fabric to microcystis aeruginosa removal

Abstract

The invention provides a preparation method of a nanometer material loaded BiOBr/fabric. Specifically, the method comprises dissolving KBr in water, mixing in fabric to obtain a mixed solution A; dissolving Bi(NO3)3*5H2O into acetic acid aqueous solution, and adding the solution into the mixed solution A, stirring the mixture at room temperature, performing ultrasonic treatment, standing and drying to obtain the prepared nanometer material loaded BiOBr/fabric. The prepared nanometer material loaded BiOBr/fabric is applied to microcystis aeruginosa removal. Under light, the nanometer material loaded BiOBr/fabric can consume O2 in culture media and produce highly oxidizing free radicals on the surface of BiOBr particles to deep degrade and oxidize photosynthetic pigments, phycobiliprotein and on-membrane polyunsaturated fatty acids and further to cause collapse of the photosynthetic function, hindering of protein synthesis and peroxidation of cell membrane lipids, thereby damaging alga cells and inhibiting growths of alga cells.

Description

technical field [0001] The invention relates to a preparation method of loaded nanomaterial BiOBr / fabric and its application in removing Microcystis aeruginosa, belonging to the technical field of water pollution control. Background technique [0002] In recent years, frequent algal blooms have occurred in reservoirs and lakes that are drinking water sources, and Microcystis aeruginosa is the dominant species in many algal blooms in reservoirs and lakes. Cyanobacteria blooms have brought a series of serious impacts, such as low dissolved oxygen leading to fish and shrimp deaths, producing toxic odors, disrupting the normal circulation of the ecosystem, and directly affecting the drinking water treatment system, which not only causes serious economic losses, but also seriously harms Human health, so it is urgent to find a reliable method to remove harmful algae. At present, common removal methods include mechanical salvage, membrane separation, chemical algaecide, flocculati...

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Problems solved by technology

Guo and Jiang et al. combined BiOBr with magnetic material Fe 3 o 4 or CoFe 2 o 4 Composite, it is hoped to be collected by external magnetic force, but because the small particles cannot respond to the magnetic field quickly, the later collection time is long

BiOBr and silicon nitride foam composite floating materials prepared by Cao et al. and Ag prepared by Hou et al. 3 PO 4 / ZnFe 2 o 4 / The pre-treatment of hollow floating beads is complicated, requires high temperature treatment, and takes a long time

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