Research Article Thermodynamic, Nonlinear Kinetic, and Isotherm Studies of Bisphenol A Uptake onto Chemically Activated Carbons Derived from Safou (Dacryodes edulis) Seeds Cyrille Donlifack Atemkeng , 1 Arnaud Kamdem Tamo , 2,3,4 Giscard Doungmo , 5 Liouna Adoum Amola , 1 Julio Jimmy Kouanang Ngouoko , 1 and Th´ eophile Kamgaing 1 1 Research Unit of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon 2 Laboratory for Sensors, Institute of Microsystems Engineering-IMTEK, University of Freiburg, Georges-Koehler-Allee 103, Freiburg 79110, Germany 3 Freiburg Materials Research Center, University of Freiburg, Stefan-Meier-Strasse 21, Freiburg 79104, Germany 4 Freiburg Center for Interactive Materials and Bioinspired Technologies FIT, University of Freiburg, 79110 Freiburg, Germany 5 Institute of Inorganic Chemistry, Christian-Albrechts-Universit¨ at Zu Kiel, Max-Eyth Street 2, Kiel 24118, Germany Correspondence should be addressed to Cyrille Donlifack Atemkeng; cyrcyrille@gmail.com and ´ eophile Kamgaing; theokamgaing@yahoo.fr Received 13 July 2022; Revised 30 August 2022; Accepted 15 September 2022; Published 7 October 2022 Academic Editor: Rabia Rehman Copyright © 2022 Cyrille Donlifack Atemkeng et al. is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. e interest of this work is to evaluate the possibility of using safou seeds to develop a new low-cost adsorbent and study its application to remove bisphenol A from an aqueous solution for a sustainable and ecological use of this biomass. is was done by optimizing some parameters that influence the adsorption process. e central composite design with four centre points was used to optimize the process variables. e concentration of bisphenol A solution, adsorbent dosage, stirring time, and solution pH on the adsorption capacity were considered, while the response measured was the quantity adsorbed. e activated carbon obtained by treatment with H 2 SO 4 was named NSST and that obtained by treatment with H 3 PO 4 was named NSPT. XRD revealed an amorphous character for the ACs, and EDXS showed they are mainly carbonaceous. Under the optimal adsorption conditions, NSPT showed the best performance. Correlation coefficients R 2 and R 2 adj were of 85.13 and 69.12% for NSPTand 83.71 and 66.17% for NSST. A pseudo- second-order nonlinear kinetic model best described the adsorption kinetic of BPA removal by the ACs. Langmuir’s isotherm best described the adsorption of BPA onto both adsorbents. ermodynamic studies suggested an exothermic and physisorption process. 1. Introduction Water is the natural resource particularly used in our ev- eryday life and mostly for industrial processes. After use, its release into the environment in more or less highly polluted residual form poses a serious threat to the aquatic fauna because it accumulates in their organisms due to their non- or low biodegradability. ese chemicals include endocrine disruptor compounds among which is bisphenol A (BPA). e latter is classified as a priority pollutant by the European Union and the United States Environmental Protection Agency. Also known as 4,4’-(propane-2,2-diyl)diphenol, BPA is an emerging contaminant that is often detected in natural waters at levels of ng/L or μg/L, making it a trace organic contaminant. It is obtained by the reaction between two equivalents of phenol and one equivalent of acetone. is compound is widely applied to produce plastics, resins, and other materials [1]. Bisphenol A, found in tap water, surface water, air, and foodstuffs in considerable quantities [1–3], is now part of the so emerging pollutants. It is capable Hindawi Journal of Chemistry Volume 2022, Article ID 7717148, 17 pages https://doi.org/10.1155/2022/7717148