Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Why is walnut shell filtration effective for free oil removal?

April 26, 2017effective filtration Free Oil Removal Shell walnut

0

Posted

Why is walnut shell filtration effective for free oil removal?

1 Answer

0

Posted

Black walnut shells have been known to have an affinity for oil for a long time. Pulverized walnut shells are used in the cosmetic industry to take oil off skin. Walnut shell media is adsorbent to oil, meaning that the free oil will adhere to the surface of the media but not be absorbed into the media. This allows for cleaning and regeneration of the media. Walnut shell media has the proper hardness and modulus of elasticity which enable it to have an attrition rate of only 7% per year.