Caffeine removal using activated biochar from açaí seed (Euterpe oleracea Mart): Experimental study and description of adsorbate properties using Density Functional Theory (DFT)

Almeida, Arthur da Silva Vasconcelos de; Vieira, Wedja Timóteo; Bispo, Mozart Daltro; Melo, Samara Farias de; Silva, Thiago Lopes da; Balliano, Tatiane Luciano; Vieira, Melissa Gurgel Adeodato; Soletti, João Inácio

doi:10.1016/j.jece.2020.104891

Cited by 21 publications

(8 citation statements)

References 68 publications

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“…4 To ensure effective sanitation by removing these contaminants from water resources, various effluent treatment techniques are employed, including advanced oxidation processes (such as photodegradation, degradation, photofenton, and ozonation), bioremediation, membrane processes and adsorption. 3,4,17,18 Some of these techniques are associated with high operational and maintenance costs and may produce products with unknown toxicity. On the other hand, adsorption offers distinct advantages, including low operational costs, ease of operation and high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…This approach utilizes a wide range of adsorbent materials – usually carbon-based, silicas, zeolites, clays, metal-organic frameworks, polymers, bioadsorbents, and agroindustrial residues – to investigate their interactions, which can be either chemical or physical in nature, with contaminants. 17 Biomass can be used to produce efficient carbon adsorbents.…”

Section: Introductionmentioning

confidence: 99%

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Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

de Freitas Filho,

Oliveira,

Silva

et al. 2024

New J. Chem.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

de Freitas Filho,

Oliveira,

Silva

et al. 2024

New J. Chem.

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“…The rest is generated byproducts, often inappropriately disposed of in the environment [23,24]. Due to these factors, some studies have analyzed the potential of this biomass as an adsorbent in the removal of caffeine [25], heavy metals [26][27][28][29], dyes [30,31], and phenol [32].…”

Section: Introductionmentioning

confidence: 99%

Transformation of Residual Açai Fruit (Euterpe oleracea) Seeds into Porous Adsorbent for Efficient Removal of 2,4-Dichlorophenoxyacetic Acid Herbicide from Waters

et al. 2022

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Brazil’s production and consumption of açai pulp (Euterpe oleracea) occur on a large scale. Most of the fruit is formed by the pit, which generates countless tons of residual biomass. A new purpose for this biomass, making its consumption highly sustainable, was presented in this study, where activated carbon (AC) was produced with zinc chloride for later use as an adsorbent. AC carbon formed by carbon and with a yield of 28 % was satisfactorily used as an adsorbent in removing the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). Removal efficiency was due to the highly porous surface (Vp = 0.467 cm3 g−1; Dp = 1.126 nm) and good surface área (SBET = 920.56 m2 g−1). The equilibrium data fit the Sips heterogeneous and homogeneous surface model better. It was observed that the increase in temperature favored adsorption, reaching a maximum experimental capacity of 218 mg g−1 at 328 K. The thermodynamic behavior indicated a spontaneous, favorable, and endothermic behavior. The magnitude of the enthalpy of adsorption was in agreement with the physical adsorption. Regardless of the herbicide concentration, the adsorbent displayed fast kinetics, reaching equilibrium within 120 min. The linear driving force (LDF) model provided a strong statistical match to the kinetic curves. AC with zinc chloride (ZnCl2), created from leftover açai biomass, is a potential alternative as an adsorbent for treating effluents containing 2,4-D.

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“…Due to these environmental issues, several researchers have been studying possible applications for this waste: energy generation using as activated carbon, bio-absorbent to remove metal ions from water (de Souza et al, 2020;Nagata, Souto, Perazzini, & Perazzini, 2020;Queiroz et al, 2020), transformed into biochar and applied as a soil conditioner ( da Silva et al, 2021;Sato et al, 2019), as a catalyst for biofuel production (Araujo et al, 2021), as downdraft aerator (Itai et al, 2014), as a model of in vitro simulated gastrointestinal digestion (Melo et al, 2020), among others.…”

Section: Introductionmentioning

confidence: 99%

Sementes de açaí (Euterpe precatoria Mart.) como uma nova fonte alternativa de celulose: Extração e caracterização

Barros¹,

Oliveira²,

Pessoa³

et al. 2021

RSD

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O açaí (Euterpe precatoria Mart.) é uma planta amplamente cultivada na região norte do Brasil. Seus frutos vêm ganhando destaque mundial devido aos inúmeros benefícios para a saúde humana. Consequentemente, a produção de celulose aumentou consideravelmente nos últimos anos, gerando uma quantidade significativa de resíduos (principalmente sementes). Como esses resíduos não têm uma destinação adequada, eles são descartados no meio ambiente ou incinerados, causando inúmeros impactos ambientais. Com o objetivo de apresentar alternativas de aplicação desses resíduos, este trabalho teve como objetivo avaliar o conteúdo lignocelulósico das sementes de açaí - extratos, cinzas, lignina, celulose (α-celulose e hemicelulose) - além de extrair e caracterizar a celulose obtida desse abundante resíduo. As sementes e a celulose extraída foram caracterizadas por diversas técnicas: fluorescência de raios X (XRF), difração de raios X (XRD), refletância total atenuada com espectroscopia de infravermelho por transformada de Fourier (ATR / FTIR) e termogravimetria (TGA). Neste estudo, foi confirmado o alto potencial do uso da semente de açaí como fonte alternativa de celulose, uma vez que apresenta 45,5% desse polímero e todas as técnicas de caracterização mostram a pureza da celulose extraída (tipo I).

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Caffeine removal using activated biochar from açaí seed (Euterpe oleracea Mart): Experimental study and description of adsorbate properties using Density Functional Theory (DFT)

Cited by 21 publications

References 68 publications

Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

Transformation of Residual Açai Fruit (Euterpe oleracea) Seeds into Porous Adsorbent for Efficient Removal of 2,4-Dichlorophenoxyacetic Acid Herbicide from Waters

Sementes de açaí (Euterpe precatoria Mart.) como uma nova fonte alternativa de celulose: Extração e caracterização

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