| Abstract | This study has focused on the synthesis of lanthanum-, cerium- and calcium-functionalized adsorbents to remove heavy metal ions from aqueous solutions. Avocado seeds were used as a feedstock to obtain carbon-based adsorbents via pyrolysis and these adsorbents were further functionalized with lanthanum, cerium and calcium species using different experimental conditions to improve its adsorption properties. These adsorbents were utilized for the adsorption of heavy metals from aqueous solutions. At tested experimental conditions, the raw adsorbent showed an adsorption capacity of 7.04, 10.91, 11.41 and 6.38 mg/g for cadmium, nickel, copper and zinc, respectively. These adsorption capacities increased up to 70 % after adsorbent surface functionalization. These results suggested that the adsorption capacity of avocado-based adsorbents appeared to be dependent of the adsorbate properties. |
| Text | 421010 2019 10.34049/bcc.51.B.009 Scopus 2 s2.0 85078853110 Adsorption heavy metals lignocellulosic waste water purification avocado seed Avocado seeds valorization as adsorbents of priority pollutants from water Mendoza Castillo D.I.; Reynel Avila H.E.; Bonilla Petriciolet A.; Pastore C.; di Bitonto L. Water Engineering and Technology Laboratory, Instituto Tecnologico de Aguascalientes, Aguascalientes, Aguascalientes, 20256, Water Engineering and Technology Laboratory, Instituto Tecnologico de Aguascalientes, Aguascalientes, Aguascalientes, 20256, Mexico, , Mexico; Catedras CONACyT, Consejo Nacional de Ciencia y Tecnologia, Ciudad de Mexico, Distrito Federal, 03940, Catedras CONACyT, Consejo Nacional de Ciencia y Tecnologia, Ciudad de Mexico, Distrito Federal, 03940, Mexico, , Mexico; Water Research Institute, Istituto di Ricerca sulle Acque, Italian National Research Council, Bari, 70132, Water Research Institute, Istituto di Ricerca sulle Acque, Italian National Research Council, Bari, 70132, Italy, , , Italy; Water Research Institute, Istituto di Ricerca sulle Acque, Italian National Research Council, Bari, 70132, Water Research Institute, Istituto di Ricerca sulle Acque, Italian National Research Council, Bari, 70132, Italy, , , Italy This study has focused on the synthesis of lanthanum , cerium and calcium functionalized adsorbents to remove heavy metal ions from aqueous solutions. Avocado seeds were used as a feedstock to obtain carbon based adsorbents via pyrolysis and these adsorbents were further functionalized with lanthanum, cerium and calcium species using different experimental conditions to improve its adsorption properties. These adsorbents were utilized for the adsorption of heavy metals from aqueous solutions. At tested experimental conditions, the raw adsorbent showed an adsorption capacity of 7.04, 10.91, 11.41 and 6.38 mg/g for cadmium, nickel, copper and zinc, respectively. These adsorption capacities increased up to 70 % after adsorbent surface functionalization. These results suggested that the adsorption capacity of avocado based adsorbents appeared to be dependent of the adsorbate properties. 51 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85078853110 origin=inward Articolo in rivista Bulgarian Academy of Sciences 0861 9808 Bulgarian Chemical Communications Bulgarian Chemical Communications Bulg. Chem. Commun. carlo.pastore PASTORE CARLO IProPBio Integrated Process and Product Design for Sustainable Biorefineries TA.P07.001.005 Recupero di risorse da rifiuti e biomasse |
