High Adsorption Efficiency of Topkhana Natural Clay for Methylene Blue from Medical Laboratory Wastewater: a Linear and Nonlinear Regression

Salh, Dler. M.; Aziz, Bakhtyar K.; Kaufhold, Stephan

doi:10.1007/s12633-019-00100-0

Cited by 19 publications

(11 citation statements)

References 41 publications

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“…Since the plotting of non-linear kinetic models helped to conrm the result of linear plotting to protect the processing data, 81 many previous studies have reported both linear and non-linear kinetic models to conrm their results. 76,77,82,83 Similarly, this study reported and compared the results of linear and non-linear of both the kinetic models, and their results agreed closely with the kinetic parameter values.…”

Section: Adsorption Kineticssupporting

confidence: 75%

Antibacterial activities against Staphylococcus aureus and Escherichia coli of extracted Piper betle leaf materials by disc diffusion assay and batch experiments

Ngamsurach

Praipipat

2022

RSC Adv.

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Section: Adsorption Kineticssupporting

confidence: 75%

Antibacterial activities against Staphylococcus aureus and Escherichia coli of extracted Piper betle leaf materials by disc diffusion assay and batch experiments

Ngamsurach

Praipipat

2022

RSC Adv.

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“…( 4)) [32] and pseudo-second-order (suggested by Hoo, Eq. ( 5)) [33] kinetic equations were applied to the experimental data, and their error analysis such as the correlation coefficient (R 2 ) and the sum of square errors (SSE) were compared to show the fitting kinetic model.…”

Section: Adsorption Studiesmentioning

confidence: 99%

Efficient Removal of Basic Fuchsin from Synthetic Medical Wastewater and Competitive Adsorption in the Mixture

Ahmed

Salihi

Kaufhold

et al. 2023

Adsorption Science & Technology

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The Ziehl-Neelsen stain is a mixture of Basic Fuchsin (BF), phenol (Ph), and methylene blue. It is used to stain the cell walls of Mycobacterium species. In this study, Basic Fuchsin was efficiently removed from synthetic wastewater using natural clay of Gankawa (GC) from Sulaimanyah city, and the effect of the presence of high concentrations of phenol in the adsorption mixture is demonstrated. In addition, X-ray diffraction (XRD), X-ray fluorescence (XRF), N2 gas adsorption analyzer, and field-emission scanning electron microscopy (FESEM) were used to characterize the natural clay. The clay was found to be mostly calcite, with a minor percentage of smectite, and contaminated with low percentages of illite. The adsorption kinetics show a relatively fast equilibration time (60-70 minutes). A second-order pseudokinetic model better fits the experimental kinetic data. The effect of the initial pH of the solution mixture was negligible at the experimental concentration range of the study. Freundlich and Langmuir’s adsorption isotherm models were applied to the equilibrium experimental data using nonlinear regression curve fitting. Both kinetics and isotherm studies point to a chemical adsorption mechanism for the process. For adsorption in the mixture, phenol molecules were found to compete with BF molecules for the active adsorption sites, while a synergetic effect of BF exists on phenol adsorption. As a naturally abundant cheap material, GC shows a superior adsorption capacity toward BF (287.0 mg g-1) over all natural materials and most of the synthetic or modified materials found in the literature.

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“…O modelo de isoterma de Temkin pode ser aplicado para determinar o calor de adsorção das moléculas entre as camadas e esse fator diminui linearmente com o aumento da cobertura do adsorvente devido às interações adsorvente-adsorvato, desconsiderando concentrações baixas ou elevadas. Além disso, caracteriza-se pela distribuição uniforme das energias de ligação até um máximo [14,17]. A forma linear da isoterma de Temkin é descrita pela Equação 4, a seguir:…”

Section: Ensaios De Equilíbrio E Cinética De Adsorçãounclassified

Potencial de resíduo não processado proveniente da obtenção do silício metálico como adsorvente do corante vermelho de metila

et al. 2023

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RESUMO Efluentes industriais contendo contaminantes orgânicos e inorgânicos são despejados em mananciais causando prejuízo aos organismos aquáticos e, consequentemente, sérias doenças ao ser humano. Nesta pesquisa foi investigada a capacidade de adsorção frente ao azo corante vermelho de metila pelo resíduo industrial proveniente da fabricação do silício metálico, os resultados foram ajustados aos modelos de isotermas de adsorção de Temkin, Freundlich e Dubinin-Radushkevich. Realizou-se a caracterização granulométrica, morfológica e química do material. Técnicas como MEV-EDS e ICP-OES foram utilizadas. Para o resíduo foi determinado o ponto de carga zero (pHPCZ) e a influência do pH e da velocidade de agitação na capacidade de adsorção. As características do equilíbrio de adsorção foram determinadas aplicando-se os modelos lineares de isotermas de adsorção de Freundlich, Tempkin e Dubinin-Radushkevich, já os processos cinéticos foram avaliados utilizando-se os modelos lineares de pseudo-primeira ordem, pseudo-segunda ordem, Elovich e difusão intrapartícula. A caracterização por MEV/EDS indicou que o resíduo apresenta um teor de 63,75% de SiO2. O percentual de remoção do corante em meio aquoso chegou a 80% a partir da concentração de 15 mg/L. O modelo de pseudo-segunda ordem, com R2 igual a 1,0000 e Q2 de 0,9999, foi o que melhor se ajustou às condições de cinética de adsorção e o de Temkin, cujos valores de R2 e Q2 foram 0,9008 e 0,7929, respectivamente, foi o que melhor representou o equilíbrio. O processo de adsorção foi caracterizado como sendo favorável e os resultados indicam que o resíduo apresenta potencial para ser utilizado como adsorvente do corante vermelho de metila.

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High Adsorption Efficiency of Topkhana Natural Clay for Methylene Blue from Medical Laboratory Wastewater: a Linear and Nonlinear Regression

Cited by 19 publications

References 41 publications

Antibacterial activities against Staphylococcus aureus and Escherichia coli of extracted Piper betle leaf materials by disc diffusion assay and batch experiments

Antibacterial activities against Staphylococcus aureus and Escherichia coli of extracted Piper betle leaf materials by disc diffusion assay and batch experiments

Efficient Removal of Basic Fuchsin from Synthetic Medical Wastewater and Competitive Adsorption in the Mixture

Potencial de resíduo não processado proveniente da obtenção do silício metálico como adsorvente do corante vermelho de metila

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