Factor design methodology for modelling and optimization of carcinogenic acid dye adsorption onto Moroccan prickly pear cactus peelRachid Aziam, Latifa Boukarma, Ahmed Zaghloul, Ridouan Benhiti, Elhassane Eddaoudi, Mohamed Zerbet and Mohamed ChibanE3S Web Conf., 240 (2021) 02005DOI: https://doi.org/10.1051/e3sconf/202124002005