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Prof. Meng Jianqiang and Dr. Pan Ying from Tianjin Polytechnic University made breakthroughs in the preparation technology of antibacterial and anti-contamination reverse osmosis composite membranes. In one step, they also introduced anti-pollution and antibacterial components into the membrane surface. This kind of membrane can effectively inhibit the organic matter, inorganic salts and microbial contamination in water, and the antibacterial rate is as high as 98%. Related papers were recently published in the Journal of Materials Chemistry A, a well-known chemical journal in the field of international materials.
In the face of increasingly severe water shortages, reverse osmosis (RO) has become the mainstream water treatment technology. However, membrane fouling has been a major obstacle to the further development of reverse osmosis technology and its operating costs. In response to these problems, Prof. Meng Jianqiang's group tried to perform multi-functional modification on the surface of RO membranes through multi-component reactions. In one step, the anti-pollution and anti-bacterial components were introduced into the membrane surface to effectively suppress organic pollution, inorganic salt pollution, and biological pollution. Antimicrobial anti-pollution reverse osmosis membrane.
This method not only expands the inhibition range of the contaminants, but also simplifies the reaction steps and conditions. When the modified RO composite membrane was filtered through BSA and high hardness inorganic salt solution, the permeation flux decay rate was much lower than that of the original membrane, and the recovery rate after a short time of cleaning was also significantly improved. In addition, when it was incubated with bacteria, The bacterial concentration was significantly reduced compared with the original membrane, and the inhibition rate was as high as 98%. Compared with the conventional one-step reaction in the current literature, which can only complete the modification of a single component, the operation is simple, the conditions are mild, and the advantages of high efficiency and economy are both taken into consideration.
In the face of increasingly severe water shortages, reverse osmosis (RO) has become the mainstream water treatment technology. However, membrane fouling has been a major obstacle to the further development of reverse osmosis technology and its operating costs. In response to these problems, Prof. Meng Jianqiang's group tried to perform multi-functional modification on the surface of RO membranes through multi-component reactions. In one step, the anti-pollution and anti-bacterial components were introduced into the membrane surface to effectively suppress organic pollution, inorganic salt pollution, and biological pollution. Antimicrobial anti-pollution reverse osmosis membrane.
This method not only expands the inhibition range of the contaminants, but also simplifies the reaction steps and conditions. When the modified RO composite membrane was filtered through BSA and high hardness inorganic salt solution, the permeation flux decay rate was much lower than that of the original membrane, and the recovery rate after a short time of cleaning was also significantly improved. In addition, when it was incubated with bacteria, The bacterial concentration was significantly reduced compared with the original membrane, and the inhibition rate was as high as 98%. Compared with the conventional one-step reaction in the current literature, which can only complete the modification of a single component, the operation is simple, the conditions are mild, and the advantages of high efficiency and economy are both taken into consideration.
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