Methylene blue and iodine adsorption onto an activated desert plant

Bestani, Benaouda; Benderdouche, N.; Benstaali, Baghdad; Belhakem, Mostefa; Addou, A.

doi:10.1016/j.biortech.2008.02.053

Cited by 256 publications

(84 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The wastewater containing MB has adverse impacts on flora, fauna and aquatic ecosystems (Ghosh and Bhattacharyya 2002;Guo et al 2014). Moreover, MB is frequently used as a probe molecule for determining the adsorption capacity of adsorbents (Bestani et al 2008). Therefore, it is essential to minimize a number of dyes to the lowest possible limit approved by the environment and health agencies.…”

Section: Introductionmentioning

confidence: 99%

Optimization of banana trunk-activated carbon production for methylene blue-contaminated water treatment

et al. 2018

View full text Add to dashboard Cite

This experiment was run to characterize the banana trunk-activated carbon through methylene blue dye adsorption property. The H 3 PO 4 chemical activating agent was used to produce activated carbons from the banana trunk. A small rotatable central composite design of response surface methodology was adopted to prepare chemically (H 3 PO 4 ) activated carbon from banana trunk. Three operating variables such as activation time (50-120 min), activation temperature (450-850 °C), and activating agent concentration (1.5-7.0 mol/L) play a significant role in the adsorption capacities (q) of activated carbons against methylene blue dye. The results implied that the maximum adsorption capacity of fixed dosage (4.0 g/L) banana trunk-activated carbon was achieved at the activation time of 51 min, the activation temperature of 774 °C, and H 3 PO 4 concentration of 5.09 mol/L. At optimum conditions of preparation, the obtained banana trunk-activated carbon has adsorption capacity 64.66 mg/g against methylene blue. Among the prepared activated carbons run number 3 (prepared with central values of the operating variables) was characterized through Fourier transform infrared spectroscopy, field emission scanning microscopy, and powder X-ray diffraction.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimization of banana trunk-activated carbon production for methylene blue-contaminated water treatment

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Methylene blue (MB) a cationic dye has been studied as dye pollution not only because of its toxicity but its color as well (Bestani et al 2008). MB has very wide applications which make it one of the common pollutants or constituent of color effluents.…”

Section: Introductionmentioning

confidence: 99%

Removal of Methylene Blue from Aqueous Solution using Porous Biochar Obtained by KOH Activation of Peanut Shell Biochar

Han¹,

Chu²,

Liu³

et al. 2015

BioResources

View full text Add to dashboard Cite

aBiochar from peanut shell was used as the precursor for the preparation of porous biochar by KOH activation. The pore structures of porous biochar also were characterized by scanning electron microscopy (SEM) and N2 adsorption/desorption. The adsorption performance for the removal of methylene blue (MB) was deeply investigated. The effects of impregnation ratio (KOH/biochar: w/w), activation temperature, and activation time on the removal of methylene blue by porous biochar were evaluated. In addition, the effects of initial MB concentration and pH value on the adsorption process were also studied. The optimum conditions for preparing porous biochar were obtained with 1.5:1 of impregnation ratio, 800 °C of activation temperature, and 90 min of the holding time in activation. Results indicated that the adsorption capacity was high even at higher initial MB concentrations. The adsorption process followed pseudosecond-order kinetics. The experimental adsorption isotherm was found to be best fitted with the Langmuir model, which implying that the adsorption of MB by porous biochar proceeded as a monolayer adsorption, and the maximum monolayer adsorption capacity of MB was 208 mg•g -1 .

show abstract

“…O corante AM é uma molécula intensamente utilizada como "modelo" em diversos estudos de adsorção 17,18 e também de oxidação. 19,20 Trabalhos realizados em nosso grupo de pesquisa 21,22 sobre a investigação do mecanismo de degradação de AM, sedimentados por cálculos teóricos realizados para a identificação de intermediários da oxidação de azul de metileno, apontam o sinal m/z = 300 como referente à hidroxilação da molécula.…”

Section: Testes De Adsorção De Amunclassified

Remoção de compostos orgânicos em água empregando carvão ativado impregnado com óxido de ferro: ação combinada de adsorção e oxidação em presença de H2O2

Castro¹,

Guerreiro²,

Oliveira³

et al. 2009

Quím. Nova

View full text Add to dashboard Cite

In this work, composites based on activated carbon/iron oxide (AC/Fe) were prepared in two different proportions (AC/Fe 5/1 and 1/1) and evaluated in the removal of the organic dye methylene blue (MB). Physical-chemical properties of the composites were determined by X-ray diffraction (XRD), adsorption/dessorption of N 2 isotherm, temperature programmed reduction (TPR) and scanning electron microscopy (SEM). Results showed that goethite (α-FeOOH), with nanometer particle size, was formed over carbon surface for both composites. These materials showed high efficiency to remove MB from solution by combined adsorption and oxidation process. The AC/Fe 1/1 showed to be more active in (MB) oxidation then AC/Fe 5/1. Keywords: oxidation; adsorption; iron oxide. INTRODUÇÃODentre os materiais mais empregados na remoção de poluentes do meio aquoso destaca-se o carvão ativado que apresenta excelentes características adsorventes, sendo usado em uma grande variedade de processos, tais como filtração, purificação, desodorização e separação.1,2 Dependendo da natureza química de superfície, os carvões ativados podem ainda agir diretamente como catalisadores em diferentes reações químicas.3 Além disso, têm sido bastante utilizados como suportes catalíticos, pois apresentam diversas características desejáveis, como alta estabilidade sob condições de reação, propriedades mecânicas adequadas e alta área superficial, mantendo a fase ativa catalítica em um estado altamente disperso. Carvões ativados provenientes de diferentes fontes têm sido estudados como catalisadores em reações envolvendo a oxidação de compostos orgânicos em água após serem impregnados com diferentes óxidos metálicos. 4,7 Os óxidos de ferro são compostos muito abundantes na crosta terrestre e de baixo custo além de serem facilmente sintetizados em laboratório.8 Devido ao comportamento químico redox e sua baixa toxicidade, o ferro tem sido extensamente utilizado em aplicações tecnológicas, sendo empregado em diversos processos industriais.

show abstract

Methylene blue and iodine adsorption onto an activated desert plant

Cited by 256 publications

References 10 publications

Optimization of banana trunk-activated carbon production for methylene blue-contaminated water treatment

Optimization of banana trunk-activated carbon production for methylene blue-contaminated water treatment

Removal of Methylene Blue from Aqueous Solution using Porous Biochar Obtained by KOH Activation of Peanut Shell Biochar

Remoção de compostos orgânicos em água empregando carvão ativado impregnado com óxido de ferro: ação combinada de adsorção e oxidação em presença de H2O2

Contact Info

Product

Resources

About