Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa) fibers based biocarbon
Authors
Vukčević, Marija M.Pejić, Biljana M.
Pajić-Lijaković, Ivana
Kalijadis, Ana
Kostić, Mirjana M.
Laušević, Zoran
Laušević, Mila D.
Article (Published version)
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Waste hemp (Cannabis sativa) fibers were used as sustainable and renewable raw materials for production of low-cost biocarbon sorbent for heavy metals removal. Carbon precursors of different chemical composition were obtained by oxidative and alkaline treatments of hemp fibers. Influence of lignocellulosic precursor chemical composition on hemp fibers-based biocarbon (HFB) characteristics was examined by BET surface area measurement, scanning electron microscopy and mass titration. It was found that lignin content and polymorphic transformation of cellulose increase the SBET of microporous HFBs, while hemicelluloses induce more homogeneous distribution of adsorption active sites. Heavy metal ions adsorption onto HFBs is primarily influenced by the amount of surface oxygen groups, while specific surface area plays a secondary role. Equilibrium data obtained for lead ions adsorption were analyzed by different nonlinear adsorption isotherms, and the best fitting model was chosen using sta...ndard deviation and Akaike information criterion (AIC(C)). The maximum adsorption capacities of HFBs ranged from 103.1 to 116.3 mg Pb/g. Thermodynamic parameters showed that Pb2+ adsorption onto HFBs is a spontaneous and complex endothermic process, suggesting the coexistence of physisorption and chemisorption mechanisms.
Keywords:
hemp fibers / chemical composition / biocarbon / heavy metal ions / Adsorption mechanismSource:
Journal of the Serbian Chemical Society, 2017, 82, 12, 1417-1431Funding / projects:
- Development and Application of Methods and Materials for Monitoring New Organic Contaminants, Toxic Compounds and Heavy Metals (RS-MESTD-Basic Research (BR or ON)-172007)
- Functionalization, characterization and application of cellulose and cellulose derivatives (RS-MESTD-Basic Research (BR or ON)-172029)
DOI: 10.2298/JSC170310080V
ISSN: 0352-5139
WoS: 000419391700008
Scopus: 2-s2.0-85040091880
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VinčaTY - JOUR AU - Vukčević, Marija M. AU - Pejić, Biljana M. AU - Pajić-Lijaković, Ivana AU - Kalijadis, Ana AU - Kostić, Mirjana M. AU - Laušević, Zoran AU - Laušević, Mila D. PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1897 AB - Waste hemp (Cannabis sativa) fibers were used as sustainable and renewable raw materials for production of low-cost biocarbon sorbent for heavy metals removal. Carbon precursors of different chemical composition were obtained by oxidative and alkaline treatments of hemp fibers. Influence of lignocellulosic precursor chemical composition on hemp fibers-based biocarbon (HFB) characteristics was examined by BET surface area measurement, scanning electron microscopy and mass titration. It was found that lignin content and polymorphic transformation of cellulose increase the SBET of microporous HFBs, while hemicelluloses induce more homogeneous distribution of adsorption active sites. Heavy metal ions adsorption onto HFBs is primarily influenced by the amount of surface oxygen groups, while specific surface area plays a secondary role. Equilibrium data obtained for lead ions adsorption were analyzed by different nonlinear adsorption isotherms, and the best fitting model was chosen using standard deviation and Akaike information criterion (AIC(C)). The maximum adsorption capacities of HFBs ranged from 103.1 to 116.3 mg Pb/g. Thermodynamic parameters showed that Pb2+ adsorption onto HFBs is a spontaneous and complex endothermic process, suggesting the coexistence of physisorption and chemisorption mechanisms. T2 - Journal of the Serbian Chemical Society T1 - Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa) fibers based biocarbon VL - 82 IS - 12 SP - 1417 EP - 1431 DO - 10.2298/JSC170310080V ER -
@article{ author = "Vukčević, Marija M. and Pejić, Biljana M. and Pajić-Lijaković, Ivana and Kalijadis, Ana and Kostić, Mirjana M. and Laušević, Zoran and Laušević, Mila D.", year = "2017", abstract = "Waste hemp (Cannabis sativa) fibers were used as sustainable and renewable raw materials for production of low-cost biocarbon sorbent for heavy metals removal. Carbon precursors of different chemical composition were obtained by oxidative and alkaline treatments of hemp fibers. Influence of lignocellulosic precursor chemical composition on hemp fibers-based biocarbon (HFB) characteristics was examined by BET surface area measurement, scanning electron microscopy and mass titration. It was found that lignin content and polymorphic transformation of cellulose increase the SBET of microporous HFBs, while hemicelluloses induce more homogeneous distribution of adsorption active sites. Heavy metal ions adsorption onto HFBs is primarily influenced by the amount of surface oxygen groups, while specific surface area plays a secondary role. Equilibrium data obtained for lead ions adsorption were analyzed by different nonlinear adsorption isotherms, and the best fitting model was chosen using standard deviation and Akaike information criterion (AIC(C)). The maximum adsorption capacities of HFBs ranged from 103.1 to 116.3 mg Pb/g. Thermodynamic parameters showed that Pb2+ adsorption onto HFBs is a spontaneous and complex endothermic process, suggesting the coexistence of physisorption and chemisorption mechanisms.", journal = "Journal of the Serbian Chemical Society", title = "Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa) fibers based biocarbon", volume = "82", number = "12", pages = "1417-1431", doi = "10.2298/JSC170310080V" }
Vukčević, M. M., Pejić, B. M., Pajić-Lijaković, I., Kalijadis, A., Kostić, M. M., Laušević, Z.,& Laušević, M. D.. (2017). Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa) fibers based biocarbon. in Journal of the Serbian Chemical Society, 82(12), 1417-1431. https://doi.org/10.2298/JSC170310080V
Vukčević MM, Pejić BM, Pajić-Lijaković I, Kalijadis A, Kostić MM, Laušević Z, Laušević MD. Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa) fibers based biocarbon. in Journal of the Serbian Chemical Society. 2017;82(12):1417-1431. doi:10.2298/JSC170310080V .
Vukčević, Marija M., Pejić, Biljana M., Pajić-Lijaković, Ivana, Kalijadis, Ana, Kostić, Mirjana M., Laušević, Zoran, Laušević, Mila D., "Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa) fibers based biocarbon" in Journal of the Serbian Chemical Society, 82, no. 12 (2017):1417-1431, https://doi.org/10.2298/JSC170310080V . .