@Article{jrm.2021.013362,
AUTHOR = {Parichart Onsri, Decha Dechtrirat, Patcharakamon Nooeaid, Apiluck Eiad-ua, Pongsaton Amornpitoksuk, Supanna Techasakul, Ahmad Taufiq, Laemthong Chuenchom},
TITLE = {Novel Magnetically Interconnected Micro/Macroporous Structure of Monolithic Porous Carbon Adsorbent Derived from Sodium Alginate and Wasted Black Liquor and Its Adsorption Performance**},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {9},
YEAR = {2021},
NUMBER = {6},
PAGES = {1059--1074},
URL = {http://www.techscience.com/jrm/v9n6/41723},
ISSN = {2164-6341},
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 <i>via</i> conventional
freeze-drying and pyrolysis processes. In this study, sodium alginate and wasted
black liquor were employed as starting precursors. 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 Fe<sup>3+</sup> 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 m<sup>2</sup>
/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 Pb<sup>2+</sup> 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 protocol to reduce the overall costs in the preparation of renewable adsorbents with good adsorption efficiency and regeneration.},
DOI = {10.32604/jrm.2021.013362}
}