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. 2023 Mar 10;9(3):e14295.
doi: 10.1016/j.heliyon.2023.e14295. eCollection 2023 Mar.

Ficus Benjamin's leaf, a native sorbent for the exclusion of Methyl violet 10B from aquatic media

Hina Mahmood  1 , Farzana Mahmood  1
Affiliations

Ficus Benjamin's leaf, a native sorbent for the exclusion of Methyl violet 10B from aquatic media

Hina Mahmood et al. Heliyon. .

Abstract

Due to the use of non-recyclable materials and the high costs of the technologies, removal of dyes from wastewater is becoming more and more pricey. This paper presents the capacity of Ficus Benjamina (FB) leaf powder to eradicate methyl violet dye 10 B (MV) in an aqueous fluid. The surface characteristics and presence of various functional groups on the surface of sorbent were revealed by SEM and FTIR studies. Diverse constraints on the elimination of methyl violet 10 B in an aqueous environment were also studied, including starting dye concentration, temperature, and contact duration. The Elovich & liquid film diffusion models, along with Lagergren first-order, pseudo-second-order, Bangham, and modified Freundlich modeling operated to assess kinetics. Experiments confirmed the pseudo-second-order concept. To investigate tentative data, multiple linear Langmuir, Freundlich, Temkin, as well as two parameters nonlinear isotherm models were applied, with findings indicating that sorption data were like both linear and non-linear isotherms. Sorption data were found to be in excellent agreement with the Freundlich isotherm with R2 value (0.99). The sorption capacity of the sorbent was computed i.e. 312.2 mg/g. Thermodynamic characteristics were also computed. It was concluded that the sorption of methyl violet 10 B sorption on FB leaf powder is exothermic. Hence, it is a potentially cost-effective bio sorbent for exclusion of dye from wastewater.

Keywords: Exothermic process; Ficus benjamina; Freundlich isotherm; Methyl violet 10B; Nonlinear isotherms; Pseudo-second-order model; Sorption.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Image 1
Graphical abstract
Fig. 1
Fig. 1
Methyl violet 10 B (MV) dye chemical structure. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)
Fig. 2
Fig. 2
FB leaf powder FTIR spectrum of pure sorbent (FB) and loaded MV10B dye.
Fig. 3
Fig. 3
SEM micrograph (a) FB leaf powder (b) FB leaf powder with MV 10 B dye.
Fig. 4
Fig. 4
Sorption of MV 10 B onto FB leaf powder, depicts the impact of (a) contact duration, (b) sorbent dose, (c) starting dye concentration, and (d) Temperature on percent removal of MV 10 B dye.
Fig. 5
Fig. 5
Sorption of MV 10 B on FB leaf powder, depicts (a) Pseudo first order (b) Pseudo second-order (c) Elovich kinetic (d) model of liquid film diffusion.
Fig. 6
Fig. 6
Sorption of MV10B onto FB leaf powder, depicts (a) Bangham (b) Modified Freundlich kinetic equations.
Fig. 7
Fig. 7
Sorption isotherm Langmuir model of MV 10 B on FB leaf powder.
Fig. 8
Fig. 8
Sorption isotherm Freundlich model of MV 10 B on FB leaf powder.
Fig. 9
Fig. 9
Sorption isotherm Temkin model of MV 10 B on FB leaf powder.
Fig. 10
Fig. 10
Dubinin-Redushkevich(D-R) model Sorption isotherm of MV 10 B on FB leaf powder.
Fig. 11
Fig. 11
Nonlinear isotherms for sorption of MV 10Bdye onto FB leaf powder.
Fig. 12
Fig. 12
Plot of ln Kc versus 1/T for sorption of MV 10B onto FB leaf powder plot of ln Kcversus 1/T.
See this image and copyright information in PMC

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