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Novel citric acid-functionalized brown algae with a high removal efficiency of crystal violet dye from colored wastewaters: insights into equilibrium, adsorption mechanism, and reusability

Essekri, Abdelilah, Hsini, Abdelghani, Naciri, Yassine, Laabd, Mohamed, Ajmal, Zeeshan, El Ouardi, Mahmoud, Ait Addi, Abdelaziz, Albourine, Abdallah·2021·International Journal of Phytoremediation
DOI 10.1080/15226514.2020.1813686
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Abstract

Synthetic dye waste is one of the world's key ecological concerns. The algal biomass has emerged as a promising alternative adsorbent for wastewater treatment. The present study deals with the functionalization of brown algae (BA) by citric acid in order to improve its adsorption ability for textile dye removal in aqueous solutions. The morphological texture (SEM and BET) and surface chemistry (FTIR, EDS-mapping, and PZC) of the novel functionalized brown algae (designated as BA-CA) were analyzed. The performance of BA-CA for crystal violet (CV) dye removal from wastewater was investigated. The isotherm and kinetic adsorption modeling indicate the good fit of Langmuir isotherm and pseudo-second-order models. Optimum monolayer uptake capacity was 279.14 mg/g for BA-CA, which was about two times higher than that of unmodified BA. The thermodynamic parameters clearly indicated that CV removal process was physiosorption, exothermic, and spontaneous in nature. The regeneration study showed excellent reusability of the BA-CA up to five cycles. Overall, the experimental findings lead us to conclude that the BA-CA can be used as an eco-friendly, cost-effective and easily regenerated adsorbent for the purification of textile effluents.

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  • An optimum monolayer uptake capacity of 279.14 mg/g was reported for citric acid-functionalized brown algae modified algal adsorbent.

    “An optimum monolayer uptake capacity of 279.14 mg/g was reported for the modified algal adsorbent (Essekri et al., 2021).”

    From Biomass-Based Adsorbents for Removal of Dyes From Wastewater: A Review (2021) · cites this paper as Essekri et al., 2021

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Metadata

Authors
Essekri, A., Hsini, A., Naciri, Y., Laabd, M., Ajmal, Z., El Ouardi, M., Ait Addi, A., & Albourine, A.
Affiliations
  • Laboratory of Materials and Environment, Department of Chemistry, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
  • College of Engineering, China Agricultural University, Beijing, PR China
  • Laboratory of Biotechnology, Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
  • Physical Chemistry and Environment Team, Faculty of Science, Ibn Zohr University, Agadir, Morocco
ORCID
Laabd, Mohamed
Venue
International Journal of Phytoremediation
Publisher
Informa UK Limited
Published
2020-09-08
Volume
23
Issue
4
Pages
336-346
ISSN
  • 1522-6514
  • 1549-7879
DOI
10.1080/15226514.2020.1813686
Cited by
94
References
0
Language
en

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