Reactive Black dye adsorption/desorption onto different adsorbents: Effect of salt, surface chemistry, pore size and surface area

Ip, A.W.M.; Barford, J. P.; McKay, Gordon

doi:10.1016/j.jcis.2009.05.015

Cited by 204 publications

(79 citation statements)

References 40 publications

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“…This may be a result of the increase in particle size, penetration, and agglomeration, all of which occurs in surface modification and grafting stages. The surface area of AD-GNS is small in comparison with adsorbents such as activated carbons but the presence of wider pores favors higher adsorption capacities, especially for large xylene molecules (Ip et al 2009). …”

Section: Characterization Of Ad-gnsmentioning

confidence: 99%

Tin(IV) oxide nanoparticles grafted with N,N-dimethylacrylamide–allyl butyl ether for xylene adsorption

Ardakani

Panahi

Hasani

et al. 2015

Int. J. Environ. Sci. Technol.

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This study presents a two-stage method for modification of tin(IV) oxide using (3-mercaptopropyl) trimethoxysilane and grafting of N,N-dimethylacrylamideallyl butyl ether copolymer. The resulting sorbent was characterized by Fourier transform infrared spectroscopy, elemental analysis, thermogravimetric analysis, transmission electron microscopy, scanning electron microscopy, and the Brunauer-Emmett-Teller method and evaluated for xylene adsorption from environmental water samples. Batch experiments were conducted to evaluate the effect of the analytical parameters of pH, contact time, initial concentration and temperature. The optimum pH was 5, contact time was 5 min, and temperature for sorption of xylene was 30°C. The capacity of the sorbent was 8.56 mg g -1 .Results showed good accessibility of the active sites. The equilibrium adsorption data of xylene sorption onto grafted nano-tin(IV) oxide were analyzed using the Langmuir, Freundlich, Temkin, and Redlich-Peterson isotherm models. The adsorption data were modeled as pseudo-firstorder, pseudo-second-order, and intra-particle diffusion kinetic equations. The results show that adsorption followed by the Langmuir isotherm and the pseudo-secondorder model and intra-particle diffusion model showed more than one process is controlling the adsorption process. The sorbent removed more than 90 % of the xylene from the water solution samples.

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Section: Characterization Of Ad-gnsmentioning

confidence: 99%

Tin(IV) oxide nanoparticles grafted with N,N-dimethylacrylamide–allyl butyl ether for xylene adsorption

Ardakani

Panahi

Hasani

et al. 2015

Int. J. Environ. Sci. Technol.

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“…Desta forma os cátions Na + podem ligar-se as cargas negativas do corante ou neutralizar as cargas do carvão, diminuindo sua repulsão e acarretando um aumento na quantidade adsorvida (NEW COMBE et al,1996;IP et al, 2009;McKay, 1982).…”

Section: Isoterma De Adsorçãounclassified

“…De acordo com Ip et al (2009) sais dissolvidos em meio aquoso influenciam na capacidade de adsorção de carvões ativados. Desta forma o objetivo deste estudo foi analisar o efeito do cloreto de sódio no processo de adsorção do corante azul reativo BF-5G em carvão ativado de osso.…”

Section: Introductionunclassified

O Efeito Da Adição De Cloreto De Sódio No Comportamento Das Isotermas De Adsorção De Corante Azul Reativo Bf-5g Em Carvão Ativado De Osso

Horita¹,

Maeda²,

Carvalho³

et al. 2015

Anais Do Congresso Brasileiro De Engenharia Química Em Iniciação Científica - Cobeq IC 2015

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RESUMO -Devido ao alto consumo de água na industria têxtil, este tornou-se um problema devido a contaminação ocasionado por poluentes, dentre estes poluentes evidenciam-se os corantes têxteis no processo de tingimento. Para o tratamento desse poluente destacamos a possibilidade de adsorção por carvão ativado de osso, devido a alta eficiência. Neste processo de adsorção estudamos o comportamento da adição do sal NaCl na solução de corante. Dessa forma, os ensaios foram realizados em batelada para encontrarmos o tempo de equilíbrio e posteriormente obtermos as isotermas que indicaram um aumento favorável na quantidade adsorvida de corante com o aumento da concentração de sal.

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“…Dyes have been used in many industries, i.e. textile, printing, food and cosmetics, and the effluent containing dyes would have the activity of mutagenic and carcinogenic 2) . Therefore, mesoporous activated carbon with pore diameter of 2-50 nm has been required for the dye wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Mesoporous Activated Carbons by Chemical Activation of Acid- and Base-Pretreated Bamboos for Removal of Bulky Dye Molecules

et al. 2015

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2/g, 1.54 cm 3 /g and 6.0 nm, respectively. The dye adsorption experiments were carried out through a batch test to evaluate each prepared activated carbon. Methylene blue and direct blue 71 were chosen as adsorbates. ZnCl2 activated carbons had the better adsorption capacity for methylene blue compared to H3PO4 activated carbons, which were not well-suited for the methylene blue adsorption probably due to their smaller SBET and positive charge on surface. The most mesoporous sample had the largest amount of direct blue 71 adsorption (0.97 mmol/g) among the all samples, suggesting that the prepared mesoporous activated carbons would be a valuable material for the removal of bulky dyes.

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Reactive Black dye adsorption/desorption onto different adsorbents: Effect of salt, surface chemistry, pore size and surface area

Cited by 204 publications

References 40 publications

Tin(IV) oxide nanoparticles grafted with N,N-dimethylacrylamide–allyl butyl ether for xylene adsorption

Tin(IV) oxide nanoparticles grafted with N,N-dimethylacrylamide–allyl butyl ether for xylene adsorption

O Efeito Da Adição De Cloreto De Sódio No Comportamento Das Isotermas De Adsorção De Corante Azul Reativo Bf-5g Em Carvão Ativado De Osso

Preparation of Mesoporous Activated Carbons by Chemical Activation of Acid- and Base-Pretreated Bamboos for Removal of Bulky Dye Molecules

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