Highly efficient removal of thallium in wastewater by MnFe2O4-biochar composite

Juan Liu, Shixing Ren, Jielong Cao, Daniel C.W. Tsang, Jingzi Beiyuan, Yutao Peng, Fa Fang, Jingye She, Meiling Yin, Nengping Shen, Jin Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

147 Citations (Scopus)


Thallium (Tl), is a highly toxic trace metal in the natural environment. Emerging Tl pollution in waters has gradually become a global concern. However, limited removal technologies are available for Tl-containing wastewater. Herein, MnFe2O4-biochar composite (MFBC) was successfully fabricated via coprecipitation method as a novel and efficient adsorbent for treating Tl(I)-contaminated wastewater. It was found that the MFBC, with a specific surface area of 187.03 m2/g, exhibited high performance across a wide pH range of 4–11, with the superior Tl(I) removal capacity (170.55 mg/g) based on Langmuir model (pH 6.0, a dosage of 1 g/L). The removal mechanisms included physical and chemical adsorption, ion exchange, surface complexation, and oxidation. This investigation revealed that MFBC is a promising and environmentally friendly adsorbent with a low cost, large specific surface area, magnetic properties, and high efficiency for the removal of Tl(I) from wastewater.

Original languageEnglish
Article number123311
JournalJournal of Hazardous Materials
Publication statusPublished - 5 Jan 2021


  • Engineered biochar
  • Industrial wastewater treatment
  • Iron/manganese coprecipitation
  • Sustainable engineering
  • Thallium remediation

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis


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