Carbon-based adsorbents for fluoroquinolone removal from water and wastewater: A critical review

Ahmed Ashiq, Meththika Vithanage, Binoy Sarkar, Manish Kumar, Amit Bhatnagar, Eakalak Khan, Yunfei Xi, Yong Sik Ok

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

This review summarizes the adsorptive removal of Fluoroquinolones (FQ) from water and wastewater. The influence of different physicochemical parameters on the adsorptive removal of FQ-based compounds is detailed. Further, the mechanisms involved in the adsorption of FQ-based antibiotics on various adsorbents are succinctly described. As the first of its kind, this paper emphasizes the performance of each adsorbent for FQ-type antibiotic removal based on partition coefficients of the adsorbents that is a more sensitive parameter than adsorption capacity for comparing the performances of adsorbents under various adsorbate concentrations and heterogeneous environmental conditions. It was found that π-π electron donor-acceptor interactions, electrostatic interactions, and pore-filling were the most prominent mechanisms for FQ adsorption by carbon and clay-based adsorbents. Among all the categories of adsorbents reviewed, graphene showed the highest performance for the removal of FQ antibiotics from water and wastewater. Based on the current state of knowledge, this review fills the gap through methodolically understanding the mechanism for further improvement of FQ antibiotics adsorption performance from water and wastewater.

Original languageEnglish
Article number111091
JournalEnvironmental Research
Volume197
DOIs
Publication statusPublished - 2021 Jun

Bibliographical note

Funding Information:
This work was carried out with the support of Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ014758 ), Rural Development Administration , Republic of Korea and the Research Council ( ASP /01/RE/ SCI /2017/83), Faculty of Applied Sciences, University of Sri Jayewardenepura , Sri Lanka. BS was supported by the Lancaster Environment Centre project.

Funding Information:
Biochar is capable of high dispersion in aqueous media and has the capacity to stabilize foreign materials within its pores such as clays (Ashiq et al., 2019b; Premarathna et al., 2019a) and inorganic metal nanoparticles such as nanoscale zero-valent iron (nZVI) (Mao et al., 2019; Weng et al., 2017). Mao et al. (2019) studied the removal of CPX using BC supported nanoscale zero-valent iron (BC-nZVI) and the results demonstrated high CPX degradation at acidic pH 3–5. Hydrogen peroxide modified BC-nZVI enhanced the degradation further (Mao et al., 2019; Zhang et al., 2017). Therefore, multi-functional carbon-based composite has been emphasized to mitigate these limitations (Kerfahi et al., 2015; Song et al., 2020).This work was carried out with the support of Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ014758), Rural Development Administration, Republic of Korea and the Research Council (ASP/01/RE/SCI/2017/83), Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka. BS was supported by the Lancaster Environment Centre project.

Publisher Copyright:
© 2021 Elsevier Inc.

Keywords

  • Carbon-based adsorbents
  • Clean water and sanitation
  • Emerging contaminants
  • Green and sustainable remediation
  • Nanomaterials
  • Sustainable development goals

ASJC Scopus subject areas

  • Biochemistry
  • General Environmental Science

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