Recycling waste by manufacturing biomaterial for environmental engineering: Application to dye removal

Akkari, Imane; Graba, Zahra; Pazos, Marta; Bezzi, Nacer; Atmani, F.; Manseri, A.; Kaci, Mohamed Mehdi

doi:10.1016/j.bcab.2023.102709

Cited by 28 publications

(3 citation statements)

References 42 publications

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“…Dye concentration determined after centrifugation by SHIMADZU UV1800 at 531 nm. The calculation of the ad sorption uptake (q) and removal percentage (R) was carried out in the same detailed manner by a previous article [9]. The same thing for the study of the isotherm by the Langmuir, Freundlich and Temk in models, and the kinetic study by the pseudofirst order (PFO) and pseudosecond order (PSO) models.…”

Section: Introductionmentioning

confidence: 99%

“…The BET surface area and pore volume of CP are 4.806 m 2 ⋅ g -1 and 0.016 cm 3 ⋅ g -1 , respectively, ac cording to Table 1. The molecular dimensions of BR46 were also determined to be (1.55 × 0.59 × 0.49) nm [9], while CP had a size distribution that is panned from 1.91 to 220.58 nm with a mean pore size of 19.12 nm. This implies that the pores might be easily accessed by BR46 molecules.…”

Section: Introductionmentioning

confidence: 99%

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Eco-friendly biosorbent based on local raw material: application to dye removal

Graba,

Ait Merzeg,

Akkari

et al. 2024

Nauk. visn. nat. hirn. univ.

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Purpose. A leading cause of water contamination is the widespread use of dyes, which are consumed in large amounts. The purpose of the present study was to investigate the potential of the Cactus paddle (CP) as an environmentally safe biosorbent for removing Basic Red 46 dye from aqueous media. Methodology. Various analytical tools, comprising XRF, XRD, BET/BJH, FTIR, and pHPZC methods, were used to examine the surface characteristics of the biosorbent. For assessing the ability of CP for BR46 adsorption, batch adsorption assays were performed. Findings. An amount of 3.45 mg · g-1 of BR46 was adsorbed at pH 7, 500 rpm and 293 K within 180 minutes. The isothermal data was described by both the Freundlich and the Langmuir equations with R2  0.984 and 2  0.01. The kinetics was well described by a PSO model, suggesting that physico-chemical interactions govern the adsorption process. Originality. For the first time, the effective use of a local raw material resource CP as a biosorbent for the removal of BR46 dye has been substantiated. Practical value. As a result of the findings of this study, it seems possible that CP can be regarded as a sustainable resource, which would create a possibility for addressing environmental concerns in the future.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Eco-friendly biosorbent based on local raw material: application to dye removal

Graba,

Ait Merzeg,

Akkari

et al. 2024

Nauk. visn. nat. hirn. univ.

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“…The focus on green adsorbents for their use as bioadsorbents is receiving considerable attention due to their renewability and accessibility [35]. Recently, various methods have been implemented for the adsorption of the dyes present in aqueous solutions, such as the use of modified activated carbons based on agricultural residues and nanocomponents [36] as well as the use of nanotechnology [37], nanomaterials [38], mesoporous materials [39], and activated biochar [40,41], among others.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Adsorbent Biomaterials Based on Coconut Mesocarp for Treatment of Wastewater Contaminated with Tartrazine Dye

Tejada-Tovar,

Villabona-Ortiz,

Aguilar-Bermúdez

et al. 2023

Processes

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The presence of synthetic dyes in industrial wastewater poses significant environmental and health concerns due to their persistent nature and potential toxicity. Tartrazine is a synthetic yellow dye known for its stability and resistance to conventional treatment methods. As a result, its discharge into natural water bodies can lead to adverse ecological impacts and can jeopardize public health. The objective of this work was to functionalize coconut shells (CSs), coconut cellulose (CC), and modified coconut cellulose (MCC) bioadsorbents with cetyl trimethyl ammonium chloride (CTAC) for their use in the elimination by adsorption of the dye tartrazine in aqueous solutions. CC was synthesized through a double extraction with sodium hydroxide, and a chemical treatment was performed with CTAC at 100 mmol L−1. The final dye concentration was determined through UV-Vis at 500 nm. An FTIR analysis showed multiple active sites, represented in groups such as hydroxyl, COO-, NHx-, and hydrocarbon compounds. Increasing the initial concentration had a positive effect on the efficiency of the process, reaching 99% removal with an adsorption capacity of 11.89 mg/g at equilibrium using MCC. The test showed that equilibrium was reached after 30 min. Initially, the removal of the dyes was rapid, about 97% of the contaminant being removed in the first 5 min. The Langmuir and Freundlich models were satisfactorily fitted to the adsorption isotherm, showing physical and chemical adsorption. It can be concluded that MCC is a promising bioadsorbent for the removal of tartrazine dye in aqueous solutions.

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