Adsorptive removal of tetracycline from aqueous solution by maple leaf-derived biochar
| Autor: | Hak Jin Song, Hyeon Jin Jeon, Yang Yunjeong, Eunjin Yoo, Jae-Yoon Yoon, Yung-Hun Yang, Hyung Joo Kim, Yong-Keun Choi, Shashi Kant Bhatia, Ranjit Gurav, Ji Eun Kim |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Maple Environmental Engineering Aqueous solution Renewable Energy Sustainability and the Environment Chemistry Bioengineering General Medicine 010501 environmental sciences engineering.material 01 natural sciences Hydrophobic effect Adsorption 010608 biotechnology Biochar engineering Surface modification Freundlich equation Waste Management and Disposal Pyrolysis 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Bioresource Technology. 306:123092 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2020.123092 |
| Popis: | The present study evaluates the physicochemical properties of maple leaf-derived biochars (M-BCs) produced at different pyrolytic temperatures (i.e., 350, 550, and 750 °C) and their adsorptive properties for tetracycline onto M-BCs. The increase in pyrolysis temperature to produce M-BCs led to a significant increase in the biochar’s hydrophobicity, surface area, and calcite (CaCO3) crystallization. The M-BC750 produced without functionalization or activation possessed a high calcite composition and a hydrophobic nature with lower O/C and H/C, hydroxyl groups (–OH) on the surface, and functional groups (i.e., O-containing) as H-bond acceptors. Among M-BCs, the M-BC750 present a highest TC adsorption capacity owing to possible mechanisms such as metal complexation, H-bonding, and hydrophobic interactions. The isotherm and kinetic models for TC adsorption followed the Freundlich models and pseudo-second-order models, respectively. M-BCs produced from the waste fallen maple leaves could be applied as low-cost environmental adsorbents for TC removal. |
| Databáze: | OpenAIRE |
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