A novel electrochemical modification combined with one-step pyrolysis for preparation of sustainable thorn-like iron-based biochar composites

Fan Yang, Shuaishuai Zhang, Yuqing Sun, Qing Du, Jingpeng Song, Daniel C.W. Tsang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

50 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)379-385
Number of pages7
JournalBioresource Technology
Volume274
DOIs
Publication statusPublished - Feb 2019

Keywords

  • Engineered biochar
  • Iron-biochar composites
  • Lead removal/remediation
  • Waste valorization
  • Wastewater treatment

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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