Abstract
Large-scale environmental remediation of polluted water requires an effective and recyclable adsorbent produced from an abundant, low-cost, and renewable feedstock via a simple processing procedure. In this work, we demonstrate that lignin-derived magnetic activated carbons (mACs) uniquely satisfy these five criteria for (i) high-performance adsorption, (ii) high regeneration efficiency, (iii) feedstock economic and environmental viability, (iv) single-step processing, and (v) large-scale production. The mACs are synthesized via an efficient cocarbonization and activation with simultaneous impregnation of ferric sulfate. The Langmuir model closely fits the adsorption of methylene blue (MB) by mACs within the temperature range of 298-323 K, where the adsorption capacity increases as temperature increases. This capacity increased from 55.0 mg g-1to 220.2 mg g-1with the presence of magnetic nanoparticles. In addition, the magnetite nanoparticles on the activated carbon surface significantly improve its recycling ability with a removal percentage above 95% after four cycles for 5:1 mAC.
| Original language | English |
|---|---|
| Pages (from-to) | 11840-11850 |
| Number of pages | 11 |
| Journal | Industrial and Engineering Chemistry Research |
| Volume | 61 |
| Issue number | 32 |
| DOIs | |
| State | Published - Aug 17 2022 |
Funding
The authors would like to thank Dr. Stavros G Karakalos (University of South Carolina) for his help with conducting XPS characterization. The authors would also like to thank Alicia Zahnen for her help conducting experiments. L.Y. received partial support from the Center for Materials Processing, a Tennessee Higher Education Commission (THEC). This research was supported by a grant from the U.S. Department of Energy BioEnergy Technologies Office through the Biomass Research and Development Initiative award DE-EE0008353.0000. D.P.H. acknowledges support from the USDA National Institute of Food and Agriculture Hatch Project 1012359. H.C. and S.D. (characterization) were supported by Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S. Department of Energy. The authors would like to thank Dr. Stavros G Karakalos (University of South Carolina) for his help with conducting XPS characterization. The authors would also like to thank Alicia Zahnen for her help conducting experiments. L.Y. received partial support from the Center for Materials Processing, a Tennessee Higher Education Commission (THEC). This research was supported by a grant from the U.S. Department of Energy BioEnergy Technologies Office through the Biomass Research and Development Initiative award DE-EE0008353.0000. D.P.H. acknowledges support from the USDA National Institute of Food and Agriculture Hatch Project 1012359. H.C. and S.D. (characterization) were supported by Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences U.S. Department of Energy.