Mathematical modeling of heavy metal ions (Cd2+, Zn2+ and Pb2+) biosorption by chemically modified short hemp fibers
Abstract
Biosorption, an innovative and low-cost effective method for removal of heavy metal ions from wastewaters, primarily depends on the diffusion of metal ions through the porous structure of sorbent and the resistance effects arise as the result of electrostatic repulsive interactions between ions within the sorbent. Herein, the biosorption of heavy metal ions (Pb2+, Cd2+ and Zn2+) from aqueous solution by lignocellulosic material (chemically modified hemp fibers) was investigated, in order to develop a mathematical model that would describe the phenomenon of different ions transport through porous fiber matrices. Obtained results show that the biosorption process is very fast at the beginning and mainly determined by diffusion of the ions through the porous fiber structure. However, over a period of time the biosorption slows down due to the increase of the resistance to the further transport of metal ions through the fibers (i.e. the electrostatic repulsive interactions between ions int...o the fibers increase with the increase of the ion concentration in the fibers). The effective diffusion coefficient of metal ions through the fibers, the profile of heavy metal ion concentration in the fibers and the effectiveness of sorption were determined by a mathematical model based on the second Fick's low. Proposed mathematical model is used to optimize the biosorption of heavy metal ions by connecting the model parameters with the fiber performances.
Keywords:
Biosorption / Heavy metals / Short hemp fiber / Mathematical model / Diffusion coefficientSource:
Chemical Engineering Journal, 2011, 172, 1, 354-360Publisher:
- Elsevier Science Sa, Lausanne
Funding / projects:
- Functionalization, characterization and application of cellulose and cellulose derivatives (RS-MESTD-Basic Research (BR or ON)-172029)
DOI: 10.1016/j.cej.2011.06.016
ISSN: 1385-8947
WoS: 000295438800041
Scopus: 2-s2.0-79960977965
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Pejić, Biljana AU - Vukčević, Marija AU - Pajić-Lijaković, Ivana AU - Laušević, Mila AU - Kostić, Mirjana PY - 2011 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1873 AB - Biosorption, an innovative and low-cost effective method for removal of heavy metal ions from wastewaters, primarily depends on the diffusion of metal ions through the porous structure of sorbent and the resistance effects arise as the result of electrostatic repulsive interactions between ions within the sorbent. Herein, the biosorption of heavy metal ions (Pb2+, Cd2+ and Zn2+) from aqueous solution by lignocellulosic material (chemically modified hemp fibers) was investigated, in order to develop a mathematical model that would describe the phenomenon of different ions transport through porous fiber matrices. Obtained results show that the biosorption process is very fast at the beginning and mainly determined by diffusion of the ions through the porous fiber structure. However, over a period of time the biosorption slows down due to the increase of the resistance to the further transport of metal ions through the fibers (i.e. the electrostatic repulsive interactions between ions into the fibers increase with the increase of the ion concentration in the fibers). The effective diffusion coefficient of metal ions through the fibers, the profile of heavy metal ion concentration in the fibers and the effectiveness of sorption were determined by a mathematical model based on the second Fick's low. Proposed mathematical model is used to optimize the biosorption of heavy metal ions by connecting the model parameters with the fiber performances. PB - Elsevier Science Sa, Lausanne T2 - Chemical Engineering Journal T1 - Mathematical modeling of heavy metal ions (Cd2+, Zn2+ and Pb2+) biosorption by chemically modified short hemp fibers EP - 360 IS - 1 SP - 354 VL - 172 DO - 10.1016/j.cej.2011.06.016 ER -
@article{ author = "Pejić, Biljana and Vukčević, Marija and Pajić-Lijaković, Ivana and Laušević, Mila and Kostić, Mirjana", year = "2011", abstract = "Biosorption, an innovative and low-cost effective method for removal of heavy metal ions from wastewaters, primarily depends on the diffusion of metal ions through the porous structure of sorbent and the resistance effects arise as the result of electrostatic repulsive interactions between ions within the sorbent. Herein, the biosorption of heavy metal ions (Pb2+, Cd2+ and Zn2+) from aqueous solution by lignocellulosic material (chemically modified hemp fibers) was investigated, in order to develop a mathematical model that would describe the phenomenon of different ions transport through porous fiber matrices. Obtained results show that the biosorption process is very fast at the beginning and mainly determined by diffusion of the ions through the porous fiber structure. However, over a period of time the biosorption slows down due to the increase of the resistance to the further transport of metal ions through the fibers (i.e. the electrostatic repulsive interactions between ions into the fibers increase with the increase of the ion concentration in the fibers). The effective diffusion coefficient of metal ions through the fibers, the profile of heavy metal ion concentration in the fibers and the effectiveness of sorption were determined by a mathematical model based on the second Fick's low. Proposed mathematical model is used to optimize the biosorption of heavy metal ions by connecting the model parameters with the fiber performances.", publisher = "Elsevier Science Sa, Lausanne", journal = "Chemical Engineering Journal", title = "Mathematical modeling of heavy metal ions (Cd2+, Zn2+ and Pb2+) biosorption by chemically modified short hemp fibers", pages = "360-354", number = "1", volume = "172", doi = "10.1016/j.cej.2011.06.016" }
Pejić, B., Vukčević, M., Pajić-Lijaković, I., Laušević, M.,& Kostić, M.. (2011). Mathematical modeling of heavy metal ions (Cd2+, Zn2+ and Pb2+) biosorption by chemically modified short hemp fibers. in Chemical Engineering Journal Elsevier Science Sa, Lausanne., 172(1), 354-360. https://doi.org/10.1016/j.cej.2011.06.016
Pejić B, Vukčević M, Pajić-Lijaković I, Laušević M, Kostić M. Mathematical modeling of heavy metal ions (Cd2+, Zn2+ and Pb2+) biosorption by chemically modified short hemp fibers. in Chemical Engineering Journal. 2011;172(1):354-360. doi:10.1016/j.cej.2011.06.016 .
Pejić, Biljana, Vukčević, Marija, Pajić-Lijaković, Ivana, Laušević, Mila, Kostić, Mirjana, "Mathematical modeling of heavy metal ions (Cd2+, Zn2+ and Pb2+) biosorption by chemically modified short hemp fibers" in Chemical Engineering Journal, 172, no. 1 (2011):354-360, https://doi.org/10.1016/j.cej.2011.06.016 . .