Surfactant-enhanced ultrasonic extraction of polymer substances from remaining sludge cationic surfactant

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Wastewater source application is the future growth direction of sewage treatment and is additionally an unpreventable necessity for sustainable human advancement. Organic matter drawn out from sewage or sludge, such as minerals and phospholipids, can be made use of as printing and coloring basic materials, main adsorbents, and biological flocculants. It is made use of in water treatment, farming, horticulture, the paper sector, medical care, the building market, and other fields and has excellent importance. Recycling value.

Surfactant-enhanced ultrasonic extraction of polymer substances from remaining sludge cationic surfactant插图


There are lots of kinds of microorganisms in the staying sludge. As a result, the substances drawn out from it has to be a mix of numerous polymer compounds. Whether they are intracellular or extracellular polymer substances, they all have regular active groups, such as carboxyl, hydroxyl, and phosphate. Teams and other functional teams. The presence of these groups permits the extracted polymer materials to be made use of as hefty steel ion adsorbents.

As a tidy treatment innovation, ultrasonic waves do not call for the addition of chemicals throughout the action and will certainly not cause secondary air pollution. Ultrasonic waves can spread flocs in the water stage, and the cavitation result can break large bits into tiny bits. Ultrasound is an energy-intensive therapy technique, and its most significant drawback is its high power intake, which restricts the possibility of useful applications. Surfactant has a solubilizing impact, which can wash off healthy proteins on the cell membrane layer, enhance the leaks in the structure of the cell membrane layer by influencing the osmotic pressure, and increase the damage to the sludge floc. On top of that, surfactant activity can advertise the extraction of EPS from continuing to be sludge, alter the cell structure, and affect sludge residential properties.

Surfactant-enhanced ultrasonic techniques can be utilized to remove natural polymer materials and as a pretreatment technique to decrease energy intake. The increase in the removal amount of PSs from the staying sludge under the action of surfactant-enhanced ultrasound is because of the release of organic matter because of floc disintegration and cell dissolution.

Surfactant-enhanced ultrasonic extraction of polymer substances from remaining sludge cationic surfactant插图1


First, surfactants, such as anionic (such as sodium dodecyl sulfate, SDS) and cationic (such as cetyltrimethylammonium bromide, CTAB), are used to boost the connection in between sludge and polymer materials. Interactions in between. They can reduce the surface tension of sludge, making it much easier for polymer substances to separate from sludge.

Subsequently, ultrasound is presented to improve the extraction effect better. The strong resonance and shock waves created by ultrasonic waves can ruin the framework of sludge and rupture cell wall surfaces, therefore releasing even more polymer substances. Additionally, ultrasound can likewise promote the interaction between surfactants and polymer compounds, making the extraction process a lot more reliable.

During the removal process, it is also necessary to optimize the speculative parameters, such as the regularity, power, and activity time of ultrasonic waves, to accomplish the very best extraction effect.

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Generally, surfactant-enhanced ultrasonic removal of polymer compounds in residual sludge is an efficient and innovative approach. It not only enhances removal efficiency however likewise assists broaden the scope of source use of continuing to be sludge, providing new opportunities for the advancement of sewer therapy and source healing fields. Nevertheless, the practical application of this approach needs additional research and optimization to solve feasible technological problems and financial concerns.


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