296
Views
2
CrossRef citations to date
0
Altmetric
Research Article

Potential of natural ferruginous manganese (NFM) ore as a natural adsorbent for As(III) removal at low concentration

, , , , , & show all
Pages 7252-7269 | Received 10 May 2021, Accepted 06 Aug 2021, Published online: 26 Aug 2021
 

ABSTRACT

The findings of the current work pertain to the assessment of potential of natural ferruginous manganese (NFM) as a green, effective and economic adsorbent for decontamination of As(III) from aqueous media. Several techniques such as SEM coupled with EDX, BET, FTIR and XRD were used to characterise the NFM adsorbent. The adsorption parameters such as pH, contact time, temperature and NFM dose were considered and investigated in detail for the As(III) removal. The adsorption of As(III) was observed to increase with increasing temperature, concentration, adsorbent dosage and contact time of the system. The maximum As(III) adsorption of 1.9 mg g−1 over NFM revealed it to be an effective adsorbent for removing As(III) in the range of 0.45–2.5 mg/L. Langmuir, Freundlich and Dubinin Radushkevich (D-R) adsorption models were used to analyse the adsorption data and the Langmuir model provided the best fit with high regression coefficient (R2). The time profile studies demonstrated that As(III) uptake followed a pseudo-second-order kinetics while the maximum As(III) removal of 96% was obtained within the first 50 min of contact time within a pH range of 4–6. Thermodynamics results showed that As(III) adsorption by NFM was spontaneous and endothermic in nature. Based on the results, it is claimed that natural NFM can effectively serve as green, economic and potential natural adsorbent for As(III) removal and likewise from the aqueous solutions.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This research work was supported by National Research Program for Universities (NRPU) Project No. 8817 by the Higher Education Commission of Pakistan.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 1,223.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.