Water Nuggets Practice Exam

Anionic polymers play a critical role as filter aids, particularly in preventing the issue of shearing during filtration processes. Shearing refers to the mechanical stress and distortion that can occur when fluid is forced through filtration media. This stress can disrupt the structure of the particles being filtered, potentially leading to a decrease in the efficiency of the filtration and negatively impacting the quality of the filtered product.

By using anionic polymers, which are negatively charged, the attraction between the polymer and the particles helps maintain the integrity of the filter cake. This interaction not only improves the flow of the medium but also minimizes the mechanical stress exerted on the particles, reducing the chances of shearing. This results in more efficient filtration and better overall performance of the filtration system.

In summary, the correct answer highlights the importance of anionic polymers in enhancing the stability of filtration processes by preventing the adverse effects associated with shearing.