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Highly efficient removal of Cu(II), Cd(II) and Pb(II) by carboxyl-modified multi-porous biochar.
- Source :
-
Separation Science & Technology . 2018, Vol. 53 Issue 18, p2860-2869. 10p. - Publication Year :
- 2018
-
Abstract
- The carboxyl-modified biochar derived from palm fiber was prepared through pyrolysis and oxidation. The adsorption behavior for Pb(II), Cu(II) and Cd(II) on the carboxyl-modified biochar was systematically investigated. The experimental results demonstrated that the carboxyl-modified biochar exhibited impressive adsorption performance owing to its multi-porous structure and abundant adsorption sites on the surface. The maximum adsorption capacities for Pb(II), Cu(II) and Cd(II) reached 218.5, 132.1 and 79.9 mg/g, respectively. The adsorption kinetics and isotherm could be well described by the pseudo-second-order model and the Langmuir isotherm model, respectively. After five successive adsorption/desorption cycles, the removal efficiency was still more than 90%, 86% and 83% for Pb(II), Cu(II) and Cd(II), respectively. [ABSTRACT FROM AUTHOR]
- Subjects :
- *COPPER
*CADMIUM
*LEAD
*BIOCHAR
*CARBOXYL group
Subjects
Details
- Language :
- English
- ISSN :
- 01496395
- Volume :
- 53
- Issue :
- 18
- Database :
- Academic Search Index
- Journal :
- Separation Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 133400148
- Full Text :
- https://doi.org/10.1080/01496395.2018.1489417