Removal of tartrazine from aqueous solutions using adsorbents based on activated carbon and Moringa oleifera seeds

Reck, Isabela Maria; Paixão, Rebecca Manesco; Bergamasco, Rosângela; Vieira, Marcelo Fernandes

doi:10.1016/j.jclepro.2017.09.237

Cited by 153 publications

(74 citation statements)

References 36 publications

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“…It could be observed that the biosorbent presents a porous, fibrous, irregular, and heterogeneous morphology, characteristic of lignocellulosic materials, as previously verified by Alemdar and Sain . These characteristics were considered to be favorable on the adsorption of organic contaminants since it allows the access of the contaminant molecule to the internal cavities and subsequent retention …”

Section: Resultssupporting

confidence: 55%

“…23 These characteristics were considered to be favorable on the adsorption of organic contaminants since it allows the access of the contaminant molecule to the internal cavities and subsequent retention. 10,28 As shown in Figure 2a, SBH has a high carbon and oxygen content whereas a low nitrogen (38.18, 21.82, and 0.04 wt%, respectively), a result expected for an organic material. 5 It should be noted that the elements S and Cl, which are contained in the MB molecule, were not found in the spectrum in Figure 2a.…”

Section: Characterization Of the Biosorbentmentioning

confidence: 81%

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Soybean hulls as a low‐cost biosorbent for removal of methylene blue contaminant

Cusioli

Quesada

Baptista

et al. 2019

Env Prog and Sustain Energy

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Methylene blue is a cationic dye used for dyeing cotton, wool, and silk. This dye can cause impacts when reaching water resources due to the reduction of sunlight infiltration, besides the health problems if ingested. Therefore, the complete removal of this contaminant in industrial effluents is indispensable. Currently, soybean hulls residues are used in animal feed supplementation; however, since soybean oil production is large, expressive quantities is discarded in landfills. Thus, the present study aim is to evaluate the adsorption capacity of methylene blue onto soybean hulls as an alternative use of this agroindustrial residue. The material was characterized through morphological and chemical analysis which showed porosity, heterogeneity, and functional groups that favor the adsorption. Due to the mainly negative charge of the surface, the pH did not affect the cationic dye uptake, enabling a wide pH range. After the adsorption studies, the best experimental conditions were at temperatures of 298 K, mass of 0.025 g, and contact time of 180 min, resulting in the maximum adsorption capacity of 169.90 mg g−1. When compared with other low‐cost biosorbent and activated carbons, it can be perceived a potential applicability of soybean hulls in wastewater treatment as an alternative use.

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Section: Resultssupporting

confidence: 55%

Section: Characterization Of the Biosorbentmentioning

confidence: 81%

Soybean hulls as a low‐cost biosorbent for removal of methylene blue contaminant

Cusioli

Quesada

Baptista

et al. 2019

Env Prog and Sustain Energy

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“…Its seeds are widely used as coagulants and adsorbents in the treatment of water contaminants, but the husks are most often discarded, which characterizes them as a residue. [16][17][18] In this context, the present work had the objective to evaluate the adsorption capacity of APAP by M. oleifera Lam. seed husks after chemical and thermal treatment.…”

Section: Introductionmentioning

confidence: 99%

Acetaminophen adsorption using a low‐cost adsorbent prepared from modified residues of Moringa oleifera Lam. seed husks

Quesada

Cusioli

Bezerra

et al. 2019

J of Chemical Tech & Biotech

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Background The high consumption of acetaminophen leads to high concentrations in surface water causing impacts on aquatic organisms, which is highlighting the need for investigation of alternative water and wastewater treatments. Therefore, the present study objective was to evaluate the adsorption capacity of acetaminophen onto Moringa oleifera Lam. seed husks after chemical and thermal treatment. Results The characterization of the adsorbent revelaed heterogeneous morphology with the presence of micro‐ and mesopores. Adsorption studies showed that the adsorption did not altered between pH 3 and 9, and that there was no significant effect of the ionic strength, indicating that the mechanism does not involve electrostatic interactions. In fact, Fourier transform infrard spectra showed that acetaminophen was adsorbed by hydrogen bonds and π‐stacking. The kinetic data were adjusted to the pseudo‐first‐order model, indicating an equilibrium time of 18 h. The equilibrium study showed that adsorption occurred in a monolayer and was favoured by the increase in temperature. The maximum adsorption capacity was 17.48 mg g−1, at 318 K, higher than some capacities found in the literature. The thermodynamic parameters indicated that the process was spontaneous, endothermic and physical. Conclusions The characteristics and results found compared to the recent literature verified the possibility of applying this residue as a low‐cost adsorbent for the removal of acetaminophen. © 2019 Society of Chemical Industry

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“…The higher dye biosorption at the initial stage may be explained by the presence of high concentration gradient and high accessibility of a large number of vacant sites on the surface of biosorbent. The slow biosorption rate at late stage may be attributed to the saturation of active sites and the increase in the repulsive forces between dye molecules on the biosorbent and in the biosorption medium [3,4]. Based on the obtained results, it was determined that the optimum contact time was around 6 h. Fig.…”

Section: Modeling Of Dye Biosorption Systemmentioning

confidence: 94%

Usage Potential of Sawdust as a Forest Industry Waste For Treatment of Colored Effluents

Deniz¹

2019

acperpro

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In the present study, the usage potential of sawdust as a forest industry waste was evaluated for the treatment of colored industrial effluents containing Fast Green FCF synthetic dye. The effects of various environmental variables such as pH, biosorbent amount, synthetic dye concentration and contact time on the dye removal ability of biosorbent material were studied in batch operating conditions. The kinetic and equilibrium studies were performed to elucidate the dye biosorption behavior of biosorbent. The synthetic dye biosorption capacity of biosorbent was highly affected by the environmental conditions. The kinetic and equilibrium studies showed that Elovich and Langmuir models were the best models for the elucidation of dye removal behavior of biosorbent. Based on Langmuir model, the maximum monolayer biosorption capacity under the optimum environmental conditions was estimated to be 26.834 mg g -1 . The obtained results revealed that the forest industry waste biomass used has usage potential for the treatment of synthetic dye pollution in aquatic environments.

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Removal of tartrazine from aqueous solutions using adsorbents based on activated carbon and Moringa oleifera seeds

Cited by 153 publications

References 36 publications

Soybean hulls as a low‐cost biosorbent for removal of methylene blue contaminant

Soybean hulls as a low‐cost biosorbent for removal of methylene blue contaminant

Acetaminophen adsorption using a low‐cost adsorbent prepared from modified residues of Moringa oleifera Lam. seed husks

Usage Potential of Sawdust as a Forest Industry Waste For Treatment of Colored Effluents

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