Adsorption of Arsenic on Fe-Modified Biochar and Monitoring Using Spectral Induced Polarization

Panagiotis Kirmizakis, Bassam Tawabini, Omer Muhammad Siddiq, Dimitrios Kalderis, Dimitrios Ntarlagiannis, Pantelis Soupios

Research output: Contribution to journalArticlepeer-review


This work demonstrates the potential of Fe-modified biochar for the treatment of arsenic (As) simulated wastewater and the monitoring of adsorption in real-time. Specifically, we propose the utilization of date-palm leaves for the production of biochar, further modified with Fe in order to improve its adsorption function against inorganic pollutants, such as As. Both the original biochar and the Fe-modified biochar were used for adsorption of As in laboratory batch and column experiments. The monitoring of the biochar(s) performance and As treatment was also enhanced by using the spectral induced polarization (SIP) method, offering real-time monitoring, in addition to standard chemical monitoring. Both the original and the Fe-modified biochar achieved high removal rates with Fe-modified biochar achieving up to 98% removal of As compared to the 17% by sand only (control). In addition, a correlation was found between post-adsorption measurements and SIP measurements.

Original languageEnglish (US)
Article number563
JournalWater (Switzerland)
Issue number4
StatePublished - Feb 1 2022
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geography, Planning and Development
  • Biochemistry
  • Aquatic Science
  • Water Science and Technology


  • Arsenate
  • Biochar
  • Spectral induced polarization
  • Wastewater


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