A novel electrochemical modification combined with one-step pyrolysis for preparation of sustainable thorn-like iron-based biochar composites
| Autor: | Qing Du, Shuaishuai Zhang, Fan Yang, Jingpeng Song, Yuqing Sun, Daniel C.W. Tsang |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Environmental Engineering Materials science Iron Kinetics Bioengineering One-Step 010501 environmental sciences Electrochemistry 01 natural sciences Magnetics Adsorption 010608 biotechnology Biochar Electrodes Waste Management and Disposal 0105 earth and related environmental sciences Renewable Energy Sustainability and the Environment Electrochemical Techniques General Medicine Chemical engineering Iron based Charcoal Graphite Dispersion (chemistry) Pyrolysis |
| Zdroj: | Bioresource Technology. 274:379-385 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2018.10.042 |
| Popis: | A novel method incorporating electrochemical (EC) modification and one-step pyrolysis is developed to prepare sustainable Fe3O4-based magnetic adsorbent (EC-Fe3O4/BC) via pyrolysis of FeCl3-pretreated corn straw-derived biochar under an electric field generated by graphite electrode. Morphological characterization revealed a uniform dispersion of rod-like crystalline Fe3O4 nanoparticles in the inner and outer structure of biochar. The EC modification also introduced more oxygen-containing functional groups, which contributed to an outstanding Pb adsorption capacity (113 mg g−1) and fast kinetics (0.054 g mg−1 h−1). Therefore, the EC modification is a simple and time-saving method to effectively fabricate magnetic biochar adsorbent for high-performance wastewater treatment. |
| Databáze: | OpenAIRE |
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