Production, Characterization and Application of Activated Carbon from Nutshell for Adsorption of Methylene Blue

Costa, Patricia Darolt de; Furmanski, Luana Milak; Dominguini, Lucas

doi:10.5935/1984-6835.20150070

Cited by 22 publications

(8 citation statements)

References 26 publications

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“…During processing, almost 50% of the nuts mass are discarded as shells that are considered an alternative source of phenolic compounds [27]. Pecan shells have already been applied in powder form to manufacture cereal bars [28] and as a substitute to activated carbon for adsorption of methylene blue dye [29] showing the high potential of this residue for different applications. In the field of composites, pecan nutshells have been incorporated into a poly(lactic acid) (PLA) matrix as biofiller for rigid packaging.…”

Section: Introductionmentioning

confidence: 99%

Reuse of Different Agroindustrial Wastes: Pinhão and Pecan Nutshells Incorporated into Biocomposites Using Thermocompression

et al. 2020

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The development of cassava starch-based biocomposites incorporated with pecan nutshells and pinhão shells by thermocompression process was evaluated. The biocomposites were characterized in terms of thickness, bulk density, hydrophilicity, water absorption capacity (WAC), morphology, thermal and mechanical properties. The samples with residues incorporation showed lower WAC when compared to the control ones, for all evaluated times. Biocomposites containing the pinhão shells showed hydrophobic character, measured by the contact angle (greater than 90°). More irregularities were evidenced by the morphological analysis for the biocomposites added with pecan nutshells. The thermal stability of the biocomposites was influenced by the high lignin content in the residues. Regarding the mechanical properties, in both tensile and flexural tests, biocomposites containing pecan nutshells presented the lowest values of stress at break and modulus of elasticity. When compared to the control sample, the composites added with the pinhão shells had mechanical similar properties, differently from the result for samples incorporated with pecan nutshells that presented less resistant.

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Section: Introductionmentioning

confidence: 99%

Reuse of Different Agroindustrial Wastes: Pinhão and Pecan Nutshells Incorporated into Biocomposites Using Thermocompression

et al. 2020

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“…É possível observar a banda de 3400 cm -1 , característica do estiramento vibracional de grupo -OH, as vibrações em torno de 2929 cm -1 representam resíduos do desaparecimento de ligações C-H. Os picos por volta de 1734 cm -1 e 1652 cm -1 representam a presença de grupos carbonila C=O. A presença de picos em aproximadamente 1600 cm -1 até 1400 cm -1 , são característicos do estiramento de ligações C-C e C=C dos anéis aromáticos ou anéis em lignina [20,21,22]. A banda em torno de 1038 cm -1 representa ligações C-O de álcoois.…”

Section: Resultsunclassified

Adsorção em coluna de leito fixo aplicada para a pré-concentração de cádmio em amostras de água

et al. 2018

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Neste trabalho foi aplicado um processo de adsorção para pré-concentração de cádmio complexado pelo composto orgânico 1-(2-piridilazo)-2-naftol (PAN) em pH 11-12, sendo o adsorvente carvão ativado empregado como meio sólido empacotado em coluna. Foi realizada a caraterização do material adsorvente carvão, que apresentou ponto de carga zero na faixa de pH 8 e 10. Foi possível avaliar também a presença de grupos funcionais como hidroxilas, carbonila, anéis aromáticos e álcoois. O modelo da isoterma de Freundlich foi ajustado aos dados experimentais de equilíbrio por estimação não linear utilizando um programa computacional. A adsorção do complexo Cd(PAN)2 em coluna de carvão ativado com alimentação de 2 mg L-1 de Cd2+ apresentou como parâmetros da curva de ruptura o tempo útil e total de 6,20 e 25 minutos, respectivamente. A capacidade de adsorção de Cd2+ em carvão foi 0,6250 mg g-1, e altura útil da coluna foi de 1,24 cm. Foi otimizado um método para pré-concentração de Cd2+ empregando a espectrometria de absorção atômica com chama (FAAS). O fator de enriquecimento foi de 32 vezes. O método de pré-concentração foi aplicado para a determinação de Cd2+ em amostras de resíduo laboratorial e de água torneira. O método de enriquecimento apresentou-se viável para o enriquecimento das amostras, com um o tempo de preparação da amostra inferior a 15 minutos.

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“…The activation process followed the methodology proposed by Costa et al, (2015) The solution was prepared by adding zinc chloride -ZnCl2 (Merck) with a concentration of 10% m/v, in the proportion 1:5 (m/v). The container with the solution was covered with parafilm for 24 hours.…”

Section: Biochar Activationmentioning

confidence: 99%

Use of low-cost adsorbent derived from the brazilian cerrado biome to remove pollutants in effluent

Brito

Arruda

Fagnani

et al. 2021

RSD

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The biochar of the Pequi peel represents a sustainable alternative in the process of treating effluents through adsorption system. This study investigates the adsorption capacity in a fixed bed column of the activated biochar from pequi peel (ABPP) to remove the components. The biochar was obtained by pyrolysis, which was activated with zinc Chloride - ZnCl₂. Through the Thomas model, it was found that the concentration of Paracetamol of 5 mg L-1 obtained 3.21 mg g-1 of drug adsorption, which was higher than the adsorption obtained with the concentrations of 10 mg L-1 (3.02 mg g-1) and 20 mg L1 (1.22 mg g-1). Methylene blue was tested with a concentration of 3 mg L-1, adsorbing 8.07 mg g-1. The data fit the Thomas model with an R² higher than 0.90. The capacity of ABPP to adsorb methylene blue and Paracetamol was satisfactory, with adsorbing significant.

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Production, Characterization and Application of Activated Carbon from Nutshell for Adsorption of Methylene Blue

Cited by 22 publications

References 26 publications

Reuse of Different Agroindustrial Wastes: Pinhão and Pecan Nutshells Incorporated into Biocomposites Using Thermocompression

Reuse of Different Agroindustrial Wastes: Pinhão and Pecan Nutshells Incorporated into Biocomposites Using Thermocompression

Adsorção em coluna de leito fixo aplicada para a pré-concentração de cádmio em amostras de água

Use of low-cost adsorbent derived from the brazilian cerrado biome to remove pollutants in effluent

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