Adsorption of Copper and Methylene Blue on an Agrowaste of
            <i>Mauritia Flexuosa</i>

Patriota, Sara Nepomuceno; Francisco, Welington; Araújo, Daniel F.; Mulholland, Daniel Santos

doi:10.1061/(asce)ee.1943-7870.0001702

Cited by 16 publications

(7 citation statements)

References 46 publications

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“…However, the qmax obtained by Langmuir is more acceptable; since the Langmuir model best explains the sorption process, Also, the Freundlich sorption intensity (n) is greater than 1 and 0.1 < 1 𝑛 < 0.5, indicating a favorable biosorption process [39]. In addition, the positive value of BT (22.340 Jmol -1 ) further confirms the exothermic nature of the biosorption process [46].…”

Section: Biosorption Isothermsmentioning

confidence: 89%

“…With a 0.273 cm 3 g -1 total pore volume and a 2.105 nm mean pore diameter, URRFP is a predominantly mesoporous material suitable for the biosorption of dye molecules [44]. Additionally, the URRFP showed a higher surface area (533.9 m 2 g -1 ) than some previously reported agricultural waste biosorbents such as 496 m 2 g -1 for cotton seeds [45], 132.3 m2g -1 for Mauritia flexuosa petioles [46], and 329.70 m 2 g -1 for NaOH-activated coconut coir biochar [43], indicating its potential to efficiently removal of MB dye from solution.…”

Section: Biosorbent Characterizationmentioning

confidence: 92%

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Adsorptive Sequestration of Methylene Blue Dye from Aqueous Solution Using Novel Roystonea regia fruit Pericarp: Isotherm, Kinetics, and Thermodynamics

Ibikunle,

Osobamiro,

Babarinde

et al. 2024

Gazi University Journal of Science

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The batch adsorptive sequestration of methylene blue from an aqueous solution using unripe Roystonea regia fruit pericarp biomass was investigated in this study. The characteristic nature of the biosorbent was studied using various analytical instruments including Fourier Transform Infra-red spectrophotometer, Scanning Electron Microscope, Energy Dispersive X-ray, X-ray diffractometer, and the Brunauer-Emmett Teller. The adsorption study was perfomed at different experimental conditions including pH, contact time, initial dye concentration, temperature, agitation speed, and biosobent dose. From the results of this study, the optimum biosorption of MB was achieved at 120 min contact time, pH 10, room temperature (298 K), 150 rpm agitation speed and dosage of 100 mg/150 mL dye solution. With 132.30 mgg-1 maximum sorption capacity, the Langmuir isotherm best describes the biosorption equilibrium data. At all initial concentrations, the biosorption kinetics of methylene blue onto the biosorbent fitted best to the pseudo-second order kinetics model, with R2 values ≥ 0.999 and qcal being similar to the qexp. The kinetics study also showed the involvement of intra-particle diffusion in the rate-determining step; although not as the sole limiting step of the sorption process. The results of the thermodynamics study showed the high feasibility, spontaneity, and exothermic nature of the biosorption of methylene blue onto the biosorbent. This study concludes that Roystnea regia fruit pericarp would make an economically viable and renewable biosorbent for practical eco-friendly sequestration of MB dye from wastewaters.

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Section: Biosorption Isothermsmentioning

confidence: 89%

Section: Biosorbent Characterizationmentioning

confidence: 92%

Adsorptive Sequestration of Methylene Blue Dye from Aqueous Solution Using Novel Roystonea regia fruit Pericarp: Isotherm, Kinetics, and Thermodynamics

Ibikunle,

Osobamiro,

Babarinde

et al. 2024

Gazi University Journal of Science

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“…Lignocellulosic biomasses have been investigated as probable bioadsorbents for the clearing of heavy metals from wastewater, particularly for the elimination of Cr (VI) from the aqueous medium, including chromium six. The cost-effective, renewable nature and high availability of these biomasses make them an attractive option as adsorbents [9]. Different types of lignocellulosic biomasses have been evaluated as adsorbents for chromium (VI), including agricultural wastes, forestry residues, and aquatic plants [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Statistical Modelling of Biosorptive Removal of Hexavalent Chromium Using Dry Raw Biomasses of Dioscorea rotundata, Elaeis guineensis, Manihot esculenta, Theobroma cacao and Zea mays

2023

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Hexavalent chromium [Cr (VI)] is a highly toxic and hazardous contaminant that poses serious health risks to both humans and the environment. Its presence in water sources can lead to severe health issues, including various types of cancer and respiratory ailments. Therefore, developing efficient and effective methods for Cr (VI) removal is crucial in ensuring safe and clean water supplies. The aim of this research is the environmentally responsible elimination of hexavalent chromium by bioadsorption using corn residues (CR), palm fiber (PF), and the peels of yam (YP), cassava (CP), and cocoa (CH). The study was conducted with varying levels of pH, bioadsorbent quantity, temperature, and adsorbent particle size at 200 rpm, with an initial concentration of 100 mg/L and 24 h of contact time to improve the adsorption efficiency. The process variables were evaluated and optimized using the statistical technique response surface methodology (RSM). The SEM-EDS analysis revealed that the predominant elements in the structure of the bioadsorbents were carbon and oxygen. Furthermore, the adsorption process led to the incorporation of Cr (VI) into the structure of the biomaterials, as indicated by their EDS spectra. The maximal adsorption efficiency of 99.11% was obtained at pH 2, bioadsorbent dose of 0.03 mg, 30 °C, and 0.5 mm of particle size. Various equilibrium isotherms were utilized to fit and analyze the adsorption data. The assessed maximum adsorption capacities were 38.84, 56.88, 52.82, 138.94, and 240,948.7 mg/g for YP, PF, CP, CH, and CR, respectively. The adsorption data exhibited conformity with the Freundlich and Redlich–Peterson isotherm models (R2 = 0.95), indicating that the phenomenon occurs in a multilayer. Pseudo-second order and Elovich kinetic models adjusted the kinetics of chromium (VI), suggesting that the mechanism could be controlled by chemisorption. Therefore, the residual biomasses evaluated can serve as a cost-effective adsorbent for Cr (VI) removal, and the use of RSM enables efficient modeling and prediction of the adsorption process.

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“…Diversos estudos demonstraram o potencial da utilização de biomassas obtidas em resíduos da agroindústria como alternativas de baixo custo no tratamento de efluentes industriais devido sua grande disponibilidade e capacidade de adsorver metais, metaloides e compostos orgânicos de soluções aquosas (PATRIOTA et al, 2016;MULLER et al, 2019). A eficácia desses materiais na remoção de metais deve-se aos grupos funcionais presentes na lignina, celulose e hemicelulose que podem se protonar ou se desprotonar de acordo com a variação do pH da solução e, assim, interagir com os metais e suas formas associadas através de diferentes processos como a atração eletrostática, pontes de hidrogênio, e complexação (BHATNAGAR e SILLANPÄÄ, 2010;PATRIOTA et al, 2020).…”

Section: Introductionunclassified

Potencial Do Resíduo De Extração De Óleo Do Eucalipto Na Adsorção De Cobre(ii)

Marreiros da Silva,

Nepomuceno Patriota,

Francisco

et al. 2023

DRIUFT

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Este trabalho teve como objetivo avaliar o potencial dos resíduos provenientes da extração do óleo do eucalipto na adsorção de cobre (Cu). Análises de FTIR e TGA demonstraram que a biomassa é um material tipicamente lignocelulósico. A capacidade de adsorção de Cu(II) aumenta com o aumento do pH, demonstrando que a atração eletrostática é um importante processo no controle da adsorção. A adsorção alcançou equilíbrio em 60 min de tempo de contato com taxa de 0,338 g.mg−1 min−1 a 25ºC de acordo com o modelo de pseudossegunda ordem. A adsorção em equilíbrio se ajustou melhor ao modelo de Langmuir com capacidade máxima de adsorção de 45,05 mg.g-1 a 25ºC. O modelo de Dubinin-Radushkevich demonstrou que processo de adsorção é de natureza física por ter baixa energia livre de adsorção (E) de 0,3469 kJ.mol-1. O resíduo agroindustrial aqui avaliado apresentou elevado potencial para ser utilizado como adsorvente de Cu(II) e, provavelmete, de demais metais bivalentes presentes em águas contaminadas e água residuais, devido sua elevada capacidade de adsorção e processo de tratamento simplificado.

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Adsorption of Copper and Methylene Blue on an Agrowaste of Mauritia Flexuosa

Cited by 16 publications

References 46 publications

Adsorptive Sequestration of Methylene Blue Dye from Aqueous Solution Using Novel Roystonea regia fruit Pericarp: Isotherm, Kinetics, and Thermodynamics

Adsorptive Sequestration of Methylene Blue Dye from Aqueous Solution Using Novel Roystonea regia fruit Pericarp: Isotherm, Kinetics, and Thermodynamics

Statistical Modelling of Biosorptive Removal of Hexavalent Chromium Using Dry Raw Biomasses of Dioscorea rotundata, Elaeis guineensis, Manihot esculenta, Theobroma cacao and Zea mays

Potencial Do Resíduo De Extração De Óleo Do Eucalipto Na Adsorção De Cobre(ii)

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