Pretreatment method for recycled seashells

Pretreatment method for recycled seashells combining ultrasonic waves and acid washing

This technology is a pretreatment method for recycled seashells that involves washing, soaking, ultrasonic irradiation, and drying, followed by acid washing in an aqueous acid solution and inspection of whiteness and strength.

To recycle seashells, surface contaminants and organic matter must be thoroughly removed; however, conventional washing methods have struggled to achieve the necessary levels of whiteness and strength.

By precisely treating seashells through ultrasonic irradiation and specific acid washing processes, this technology ensures high whiteness and strength when applied to recycled seashell raw materials.

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Key Features:

• Washing and soaking stage: Washing seashells multiple times in running water and soaking them in distilled water for 24 hours.
• Ultrasonic stage: Irradiating the seashells with ultrasonic waves three times for 30 minutes each after the soaking stage.
• Acid washing stage: Immersing the dried seashells in an aqueous acid solution after the ultrasonic stage.
• Measurement stage: Inspecting the whiteness and strength of the seashells after drying them following the acid wash.

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