Biosorption of glycerol impurities from biodiesel production onto electrospun chitosan-based nanofibers: equilibrium and thermodynamic evaluations

Environmental Science and Pollution Research International
Bruna Silva de FariasLuiz Antonio de Almeida Pinto

Abstract

The increase in biodiesel production has been leading to an excess amount of crude glycerol and, consequently, serious environmental issues. For this reason, electrospun chitosan-based nanofibers (CB-EN), composed by chitosan and poly(ethylene oxide) (PEO), were synthesized to apply in the biosorption of impurities from industrial glycerol. To evaluate the biosorption efficiency, the chitosan-based nanofiber was compared to other chitosan-based biosorbents (chitosan biopolymeric film and chitosan powder). The equilibrium and thermodynamic studies were successfully performed to comprehend the interaction mechanisms through the biosorption of glycerol pigments onto electrospun chitosan-based nanofibers. The temperature effect was evaluated by experimental equilibrium curves. Freundlich and BET models were used to estimate isotherm parameters. Gibbs free energy change, enthalpy change, entropy change, and isosteric heat of biosorption were quantified. The equilibrium curves showed that the highest equilibrium relative adsorption (340.7 g-1) was reached at 60 °C. The BET model was the most suitable to represent the equilibrium behavior. The thermodynamic parameters indicated that the biosorption was spontaneous, exothermic, random,...Continue Reading

References

Mar 15, 2012·Biotechnology for Biofuels·Fangxia YangRuncang Sun
May 23, 2012·Journal of Agricultural and Food Chemistry·Shengjun HuYebo Li
Jan 9, 2017·Environmental Science and Pollution Research International·Tuanny S FrantzLuiz A A Pinto
Nov 11, 2017·Environmental Science and Pollution Research International·Snežana Živković, Milan Veljković
Nov 19, 2017·Environmental Science and Pollution Research International·Prakash Macchindra GoreBalasubramanian Kandasubramanian
Feb 16, 2018·International Journal of Biological Macromolecules·Conglu ZhangYajie Zou
Mar 15, 2018·Environmental Science and Pollution Research International·Katrina C M KwokGordon McKay
Apr 22, 2018·Environmental Science and Pollution Research International·Zhonghao WanFrancis Verpoort
May 29, 2018·Carbohydrate Polymers·Orietta LeónMarta Fernández-García

❮ Previous
Next ❯

Citations

Jul 4, 2020·Environmental Science and Pollution Research International·Alisson Schons CamaraLuiz Antonio de Almeida Pinto
Jun 7, 2021·International Journal of Biological Macromolecules·Eduardo Silveira RibeiroPatrícia Silva Diaz

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofuels (ASM)

Biofuels are produced through contemporary processes from biomass rather than geological processes involved in fossil fuel formation. Examples include biodiesel, green diesel, biogas, etc. Discover the latest research on biofuels in this feed.