Preparation of activated carbon/chitosan/Carica papaya seeds composite for efficient adsorption of cationic dye from aqueous solution

Idohou, Esta A.; Fatombi, Jacques K.; Osseni, Sèmiyou A.; Agani, Ignace; Neumeyer, David; Verelst, Marc; Mauricot, Robert; Aminou, Taofiki

doi:10.1016/j.surfin.2020.100741

Cited by 22 publications

(17 citation statements)

References 46 publications

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“…For example, there is a shift in the absorption signal from 3642 and 1660 cm −1 on ChA before contacting AB25 dye to 3432 and 1670 cm −1 on ChA after the contact. This indicates that the adsorbent–adsorbate interactions occur through the OH, NH and C═O functional groups 4,44 . Similarly, there is a shift in absorption signal from 3415 and 1651 cm −1 on ChB before contacting with AB25 dye to 3432 and 1670 cm −1 on ChB, respectively after contact.…”

Section: Resultsmentioning

confidence: 91%

Mesoporous chitosan/activated charcoal powder and bead modified in 1‐butyl‐3‐methylimidazolium acetate for the adsorption of acid blue 25 from an aqueous solution

Saheed

Latip

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND A green synthesis approach involving 1‐butyl‐3‐methyl imidazolium acetate (BmimA) medium was utilised to prepare mesoporous chitosan/activated charcoal composite powder (ChA) and bead (ChB) for the removal of acid blue 25 (AB25) dye from aqueous solution. The composite’s characteristics were examined using Fourier transform infrared (FTIR), scanning electron microscopy (SEM), energy dispersive X‐ray analysis, X‐ray diffraction and Brunauer–Emmett–Teller (BET) analysis. The influence of initial concentration of the dye, pH, contact time and adsorbent dosage on the adsorption and the composite’s stability in acidic and basic solutions was also examined. RESULTS FTIR revealed that chitosan and activated charcoal were connected through O H, N  H, CO and C═O, while AB25 adhered to ChA and ChB through the hydroxyl and amino functional groups. SEM images of ChA and ChB revealed rough‐like surfaces with randomly distributed pores. BET analysis revealed that ChA and ChB are mesoporous, with pore sizes of 2.18 and 2.26 nm. The composites were stable in acidic and basic solutions, and adsorption of AB25 onto the adsorbents was more effective at pH 2. Regeneration of the adsorbents was also influential in NaOH solution. The amount of BmimA used in the composite’s preparation has limited influence on the effectiveness of ChA and ChB for AB25 uptake. The adsorption is best described by Langmuir isotherm in both ChA and ChB with qmax of 3030.3 and 3703.7 mg g−1 respectively, although ChB also conforms to the Freundlich isotherm. The adsorption kinetics fitted well into the pseudo‐second‐order model. CONCLUSION The prepared modified chitosan/activated charcoal powder and bead were able to adsorb the AB25 dye better than other chitosan‐based materials. © 2022 Society of Chemical Industry (SCI).

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Section: Resultsmentioning

confidence: 91%

Mesoporous chitosan/activated charcoal powder and bead modified in 1‐butyl‐3‐methylimidazolium acetate for the adsorption of acid blue 25 from an aqueous solution

Saheed

Latip

et al. 2022

J of Chemical Tech & Biotech

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“…Estudo efetuado por Idohou et al (2020), sobre estudo da cinética de adsorção em Azul de Metileno, com carvão ativado produzido com sementes de mamão (Carica papaya), obtiveram resultados similares para o coeficiente de determinação (R² adj = 0,996), porém se diferem em relação à constante de espessura da camada limite (C= 20.73 mg/g). Isso pode estar relacionado as diferenças nas concentrações do adsorvato, bem como a quantidade de adsorvente utilizado em cada estudo.…”

Section: Difusão Intapartículaunclassified

Carvão ativado oriundo do mesocarpo do fruto da castanha de caju (Anacardium ccidentale) na remoção de corante em meio aquoso

Silva

Barral

Azevedo

et al. 2021

RSD

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O despejo irregular de efluentes contendo corantes causa degradação do corpo hídrico. O objetivo desta pesquisa é confecção de carvão ativado através do mesocarpo da Castanha de Caju (Anacardium occidentale) para tratamento de água, por meio da adsorção, com a finalidade de remover o corante Verde Malaquita. Foi coletado 1 kg de biomassa residual de castanha de Caju, em uma Cooperativa no Munícipio de Ipixuna-PA, seguido de processo de ativação química com Hidróxido de Sódio (NaOH). A caracterização da amostra foi realizada pelos métodos de espectroscopia de infravermelho com transformada de Fourier (FTIR), análise termogravimétrica (ATG), análise textural (SBET), Microscopia Eletrônica de Varredura (MEV/EDS). Quanto tratamento da água contendo o corante, foram realizados estudos para Equilíbrio e Cinética de adsorção. Nesse sentido, para equilíbrio, foram ajustados às isotermas de Freundlich e Langmuir, enquanto que para a cinética foram os modelos Pseudo-Primeira Ordem, Pseudo-Segunda Ordem e Difusão Intrapartícula. Os resultados de FTIR indicaram existência de grupos funcionais hidroxilas (OH) e carboxila (−COOH). O MEV/EDS indicaram partículas sólidas empilhadas e aglomeradas, gerando agregados de morfologia irregular, revelando principalemente os elementos: Oxigênio (O= 46,94%), Carbono(C=34,66%); Sódio (Na=16,13%). Quanto adsorção, para o equilíbrio ajustou-se o modelo de Langmuir (R²adj=0,8487; Qmax =573,83mg/g -1) e adsorção favorável com RL=0,0013. Por outro lado, na Cinética ajustou-se, difusão intra-partícula (R² adj=0,9966; C=69,13 mg/g-1). Portanto, carvão ativado demonstrou eficácia na remoção do corante devido a influência de grupos orgânicos funcionais, que favorecem na interação de moléculas catiônicas.

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“…This is due to the solution pH could affect the surface charge of chitosan composite and the type of dyes, eventually affecting dye removal efficiency. The results suggested that the dye removal process was chemisorption [ 37 , 79 , 90 ], which involved electrostatic interaction and ions exchange between chitosan composite and dye molecules. Besides, the physisorption process depended on the binding sites provided by chitosan composite and the amount of dyes adsorbed on the binding sites [ 89 , 91 ].…”

Section: Biosorption Parameter Studiesmentioning

confidence: 99%

“…In contrast, the Freundlich isotherm model assumed that the biosorption took place on the heterogeneous surface of chitosan composite with the interaction between multilayer adsorption of dye molecules [ 90 ]. It also assumed the adsorption energy was non-uniformly distributed on the chitosan composite surface [ 78 ].…”

Section: Biosorption Isothermsmentioning

confidence: 99%

A State-of-the-Art Review on Biowaste Derived Chitosan Biomaterials for Biosorption of Organic Dyes: Parameter Studies, Kinetics, Isotherms and Thermodynamics

et al. 2021

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Chitosan is a second-most abundant biopolymer on earth after cellulose. Its unique properties have recently received particular attention from researchers to be used as a potential biosorbent for the removal of organic dyes. However, pure chitosan has some limitations that exhibit lower biosorption capacity, surface area and thermal stability than chitosan composites. The reinforcement materials used for the synthesis of chitosan composites were carbon-based materials, metal oxides and other biopolymers. This paper reviews the effects of several factors such as pH, biosorbent dosage, initial dye concentration, contact time and temperature when utilizing chitosan-based materials as biosorbent for removing of organic dyes from contaminated water. The behaviour of the biosorption process for various chitosan composites was compared and analysed through the kinetic models, isotherm models and thermodynamic parameters. The findings revealed that pseudo-second-order (PSO) and Langmuir isotherm models were best suited for describing most of the biosorption processes or organic dyes. This indicated that monolayer chemisorption of organic dyes occurred on the surface of chitosan composites. Most of the biosorption processes were endothermic, feasible and spontaneous at the low temperature range between 288 K and 320 K. Therefore, chitosan composites were proven to be a promising biosorbent for the removal of organic dyes.

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Preparation of activated carbon/chitosan/Carica papaya seeds composite for efficient adsorption of cationic dye from aqueous solution

Cited by 22 publications

References 46 publications

Mesoporous chitosan/activated charcoal powder and bead modified in 1‐butyl‐3‐methylimidazolium acetate for the adsorption of acid blue 25 from an aqueous solution

Mesoporous chitosan/activated charcoal powder and bead modified in 1‐butyl‐3‐methylimidazolium acetate for the adsorption of acid blue 25 from an aqueous solution

Carvão ativado oriundo do mesocarpo do fruto da castanha de caju (Anacardium ccidentale) na remoção de corante em meio aquoso

A State-of-the-Art Review on Biowaste Derived Chitosan Biomaterials for Biosorption of Organic Dyes: Parameter Studies, Kinetics, Isotherms and Thermodynamics

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