Banana peel biochar with nanoflake-assembled structure for cross contamination treatment in water: Interaction behaviors between lead and tetracycline

Zhong Ting Hu, Yin Ding, Yuchao Shao, Luxiang Cai, Zi Yan Jin, Zifeng Liu, Jia Zhao, Feili Li*, Zhiyan Pan, Xiaonian Li, Jun Zhao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

With the presence of emerging organic pollutants (EOPs) in aqueous systems, the heavy metals (HMs)-transfer mechanism has been given considerable attention again. Here, a facile molten-salt method is used to successfully convert banana waste into nanoflake-assembled biochar (BC350) for the first time. It is a type of macro-mesoporous biochar with a pore size composed of ~ 3.8 nm and ~ 50 nm, and its maximum adsorption capacities are 459 mg g−1 for Pb2+ and 148 mg g−1 for tetracycline (TC), which outperforms the reported adsorbents ranging from several times to dozens of times. The pore-filling effect, electrostatic interaction, coordination affinities and π-π stacking as synergistically physical/chemical adsorption behaviors of BC350 on Pb2+/TC that has been comprehensively elucidated relying on adsorption kinetics and isotherms, and key effect parameter investigation. The competitive adsorption effect becomes insignificantly in the adsorption efficiency of BC350 on Pb2+/TC cross contamination at a control condition. Moreover, BC350 also exhibits outstanding adsorption efficiency (>95%) on Pb2+/TC in five industrial wastewater samples. This study contributes to a plausible mechanism in biochar adsorption removal of metal/organics cross contamination and its potential application explored in industrial wastewater treatment.

Original languageEnglish
Article number129807
JournalChemical Engineering Journal
Volume420
DOIs
Publication statusPublished - 15 Sep 2021

Scopus Subject Areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

User-Defined Keywords

  • Adsorption behavior
  • Biochar
  • Cross contamination
  • Lead
  • Tetracycline

Fingerprint

Dive into the research topics of 'Banana peel biochar with nanoflake-assembled structure for cross contamination treatment in water: Interaction behaviors between lead and tetracycline'. Together they form a unique fingerprint.

Cite this