What is the name of the process based on diffusion that is used to filter the blood or toxic substances when the kidneys not able to?

The process is called dialysis. It utilizes diffusion to remove waste products and excess substances from the blood when the kidneys are not functioning properly. In dialysis, blood is filtered through a semi-permeable membrane, allowing toxins and excess fluids to pass out while retaining essential components like blood cells and proteins. This treatment is crucial for individuals with kidney failure.