Performance and modeling of Ni(II) adsorption from low concentrated wastewater on carbon microspheres prepared from tangerine peels by FeCl3-assisted hydrothermal carbonization
Diaz De Tuesta J.L. Roman F.F. Marques V.C. Silva A.S. Silva A.P.F. Bosco T.C. Shinibekova A.A. Aknur S. Kalmakhanova M.S. Massalimova B.K. Arrobas M. Silva A.M.T. Gomes H.T.
October 2022Elsevier Ltd
Journal of Environmental Chemical Engineering
2022#10Issue 5
The presence of heavy metals in the environment as a consequence of human activity is an issue that has caught the attention of researchers to find wastewater treatment solutions, such as adsorption. In this work, hydrochars and activated carbon microspheres are prepared from tangerine peels as carbon precursor and FeCl3 as activating and structure-directing agent in the hydrothermal carbonization, allowing to obtain hydrochar microspheres ranging from 50 to 3615 nm. In addition, a pyrochar was prepared by pyrolysis of the same precursor. The activated carbon shows the highest surface area (SBET up to 287 m2 g-1), but the basicity of the pyrochar (1.83 mmol g-1, SBET = 104 m2 g-1) was determinant in the adsorption of Ni, being considered the carbon-based material with the highest uptake capacity of Ni. Isotherm and kinetic adsorption of Ni on the most representative activated carbon microsphere, pyrochar and hydrochar microsphere are assessed by 10 and 7 models, respectively.
Carbonaceous material , Circular economy , Citric peels , Error function , Heavy metal , Nonlinear , Waste valorization , Wastewater treatment
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Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, Bragança, 5300-253, Portugal
Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade Do Porto, Rua Dr. Roberto Frias, Porto, 4200-465, Portugal
ALiCE - Associate Laboratory in Chemical Engineering, Faculdade de Engenharia, Universidade Do Porto, Porto, 4200-465, Portugal
Universidade Tecnológica Federal Do Paraná (UTFPR), Campus de Ponta Grossa, Rua Doutor Washington Subtil Chueire, 330 Jardim Carvalho, PR, Londrina, 84017-220, Brazil
M.Kh. Dulaty Taraz Regional University, Taraz, Department of Chemistry and Chemical Engineering, Taraz, 080012, Kazakhstan
Centro de Investigação de Montanha (CIMO)
Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM)
ALiCE - Associate Laboratory in Chemical Engineering
Universidade Tecnológica Federal Do Paraná (UTFPR)
M.Kh. Dulaty Taraz Regional University
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