Purified bentonite from Nador, Morocco: A sustainable adsorbent for caffeine removal from aqueous solutionsChayma Lamghari, Laila Baroudi, Mohammed Nor, Mhamed Ahari, Amine Salhi, Fouad Mourabit, Abdellah El Yousfi, Mohamed El Miz and Hassan AmhamdiE3S Web Conf., 632 (2025) 01030DOI: https://doi.org/10.1051/e3sconf/202563201030