Publication: Novel magnetically interconnected micro/macroporous structure of monolithic porous carbon adsorbent derived from sodium alginate and wasted black liquor and its adsorption performance
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Issued Date
2021
Resource Type
Language
eng
File Type
application/pdf
ISSN
21646325
Other identifier(s)
2-s2.0-85103078307
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Journal of Renewable Materials. Vol 9, No.6 (2021), p.1059-1074
Suggested Citation
Onsri P., Dechtrirat D., Nooeaid P., Eiad-Ua A., Amornpitoksuk P., Techasakul S., Taufiq A., Chuenchom L. Novel magnetically interconnected micro/macroporous structure of monolithic porous carbon adsorbent derived from sodium alginate and wasted black liquor and its adsorption performance. Journal of Renewable Materials. Vol 9, No.6 (2021), p.1059-1074. doi:10.32604/jrm.2021.013362 Retrieved from: https://hdl.handle.net/20.500.14740/8075
Abstract
The novel and facile preparation of magnetically interconnected micro/macroporous structure of monolithic porous carbon adsorbent (MPCA) were designed and presented herein. The synthesis was achieved via conventional freeze-drying and pyrolysis processes. In this study, sodium alginate and wasted black liquor were employed as starting pre-cursors. Sodium alginate acts as a template of materials, whereas black liquor, the wasted product from the paper industry with plentiful of lignin content and alkaline solution, played an essential role in the reinforcement and activation of porosity for the resulting materials. Moreover, both the precursors were well dissolved in Fe3+ solution, providing a simple addition of a magnetic source in a one-pot synthesis. The interconnected micro/macroporous structures were generated through freeze-drying and, subsequently the pyrolysis process. The obtained cylindrical-shaped monolithic porous carbon adsorbent (MPCA-700) showed high mechanical stability, a high BET specific surface area (902 m2/g). Such aforementioned features were considered suitable to make the synthesized monolith as an adsorbent for the removal of heavy metal ions. The maximum adsorption capacity of MPCA-700 towards Pb2+ ions was 76.34 mg/g at pH 5. The adsorption studies illustrated that adsorption kinetics and isotherm perfectly fitted with the pseudo-second-order kinetics model and Langmuir isotherm, respectively. This work presents a promising pro-tocol to reduce the overall costs in the preparation of renewable adsorbents with good adsorption efficiency and regeneration. © 2021, Tech Science Press. All rights reserved.
Subject(s)
Alkalinity
Carbon
Heavy metals
Isotherms
Low temperature drying
Mechanical stability
Metal ions
Paper and pulp industry
Porous materials
Pyrolysis
Sodium
Sodium alginate
Adsorption capacities
Adsorption efficiency
Adsorption kinetics and isotherm
Adsorption performance
BET specific surface area
Pseudo second order kinetics
Removal of heavy metal ions
Resulting materials
Adsorption
Carbon
Heavy metals
Isotherms
Low temperature drying
Mechanical stability
Metal ions
Paper and pulp industry
Porous materials
Pyrolysis
Sodium
Sodium alginate
Adsorption capacities
Adsorption efficiency
Adsorption kinetics and isotherm
Adsorption performance
BET specific surface area
Pseudo second order kinetics
Removal of heavy metal ions
Resulting materials
Adsorption