Valorization of Natural Residue into Activated Carbon:Example of the Shells of the African Baobab Fruit(Adansonia digitata)L.

作     者：Edouard Mbarick Ndiaye Kalidou Ba Alioune Sow Adama Diop Yousra El Idrissi Hamza El Moudden Papa Guedel Faye Hicham Harhar Nicolas Ayessou Mohamed Tabyaoui Mady Cisse 

作者机构：Laboratory of Water Energy Environment and Industrial Processes(LE3PI)ESP-UCADESP-UCADCheikh Anta Diop UniversityBP 5085DakarSenegal Laboratory of BiologicalAgronomicFood Sciences and Modeling of Complex Systems(LABAAM)UFR of Agronomic SciencesAquaculture and Food Technologies(S2ATA)Gaston Berger University of Saint-LouisNgallele RoadBP 234Saint-LouisSenegal Laboratory of MaterialsNanotechnology and EnvironmentFaculty of Sciences-RabatMohammed V University of RabatBP 1014RabatMorocco Higher School of Technology of El Kelaa of the SraghnaCadi Ayyad UniversityBP 104El Kelaa of the SraghnaMorocco 

出 版 物：《材料科学与工程（中英文A版）》 (Journal of Materials Science and Engineering A)

年 卷 期：2022年第12卷第2期

页      面：41-54页

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

主　　题：Orthophosphoric acid activated carbon baobab fruit shell pyrolysis valorization 

摘      要：This study deals with the valorization of natural residues into activated carbon prepared from waste“Baobab fruit shellfrom the Fatick Region,***,after the preparation of the baobab shell,a chemical activation with orthophosphoric acid H3PO4(85%)was performed followed by pyrolysis at 530°*** eliminate possible carbonization residues,the activated carbons were impregnated in 0.1 M hydrochloric acid and/or soda solutions and then washed thoroughly with distilled water to obtain a pH between 6.5 and *** latter were then dried in an oven at 105°C for 24 h.A characterization was carried out to determine the moisture content,the ash content,the iodine and methylene blue indices,the surface functions and the pH at zero charge point(pHpzc).The moisture and ash contents were 1.87%and 0.72%,*** iodine and peroxide indices obtained were 939,09 mg/g and 575.73 mg/g,*** function analysis by Boehm’s method showed that the acidic functions were higher than the basic functions and their pHpzc was lower than *** best efficiency of methylene blue removal was 99.75%and was obtained with a mass of 0.150 g of activated carbon,pH equal to 10,an initial concentration of methylene blue of 200 mg/L and a contact time of 35 min.