Pore diffusion and external mass transport during dye adsorption on to Fuller's earth and silica

McKay, Gordon; Otterburn, M. S.; Aga, Jamal A.

doi:10.1002/jctb.280370405

Cited by 16 publications

(5 citation statements)

References 13 publications

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“…However, the adsorption capacity of mesitylene increases with the increase in the initial mesitylene concentration, possibly in relation to the high mass-transfer rate resulting from the high mass concentration gradient. In addition, the high initial mesitylene concentration leads to a high utilization efficiency of the sites on the adsorbent surface and high adsorption volume of the adsorbent packed bed (Huang et al, 2006;McKay et al, 1987;Nourmoradi et al, 2013). For practical treatment of waste gas, moisture crucially affects the adsorption efficiency, since water vapor in gas streams occupies the surface adsorption sites, i.e., competitive adsorption between water vapor and mesitylene may occur (De Yuso et al, 2013;Huang and Chen, 2016;Xian et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

Adsorption of mesitylene via mesoporous adsorbents

Nien

Chang²,

Chang

2017

Journal of the Air & Waste Management Association

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This study aims to improve the performance of adsorbent for mesitylene, which is typically applied in the spray-coating industry. The zeolite MCM-41-AS is selected as a candidate for the investigation. Experimental results reveal that MCM-41-AS exhibits a good adsorption capacity for mesitylene and that it can be integrated with H-ZSM-5-25 for the simultaneous adsorption of mesitylene and toluene.

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Section: Resultsmentioning

confidence: 99%

Adsorption of mesitylene via mesoporous adsorbents

Nien

Chang²,

Chang

2017

Journal of the Air & Waste Management Association

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“…A detailed study of the adsorption of Telon Blue dye on carbon has been also undertaken using fixed beds, and the data correlated into a design model using the bed depth service time (BDST) method of analysis [ 49 ]. In this time-period, emphasis was given by many researchers to the study of diffusion phenomena of dye molecules onto adsorbents during procedure [ 50 , 51 , 52 , 53 ].…”

Section: Change From Past To Futurementioning

confidence: 99%

The Change from Past to Future for Adsorbent Materials in Treatment of Dyeing Wastewaters

2013

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Adsorption is one of the most promising decolorization techniques in dyeing wastewater treatment. Adsorption techniques for wastewater treatment have become more popular in recent years owing to their efficiency in the removal of pollutants too stable for biological methods. Dye adsorption is a result of two mechanisms (adsorption and ion exchange) and is influenced by many factors as dye/adsorbent interaction, adsorbent’s surface area, particle size, temperature, pH, and contact time. The main advantage of adsorption recently became the use of low-cost materials, which reduces the procedure cost. The present review firstly introduced the technology process, research history and research hotspot of adsorption. Then, the application of adsorption in treatment of dyeing wastewaters in the past decades was summarized, revealing the impressive changes in modes, trends, and conditions. From this review article, the different philosophy of synthesis of adsorbent materials became evident.

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“…Heat of adsorption values show that the physical adsorption take place in the adsorption of AB25 and Calma on [Cu(II)/ED-cotton] support. The essential characters of Langmuir isotherm can be expressed by a dimensionless constant called equilibrium parameter, R L , which is defined as follow: [14][15][16] …”

Section: Analysis Of the Adsorption Of Dyes Onto Cu(ii)/ed-cotton Thrmentioning

confidence: 99%

Use of copper(II)/ethylene diamine‐cotton complex for the adsorption of residual dyes

Baouab

Khalfaoui

Gauthier

2006

J of Applied Polymer Sci

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The chemical modification of cotton is performed by successive reactions with thionyl chloride followed by ethylene diamine (ED) to prepare aminoalkyl amino cotton namely ED-cotton. Evidence of attaching ethylene diamine groups onto cotton is provided by nitrogen determination and thermogravimetry analysis. Because of complexation, the ethylene diamine-grafted groups immobilizes Cu(II) ions from buffered solution at pH 6. The formation of a 1/1 complex is assessed by the adsorption limit values. The binary system [Cu(II)/ED-cotton] is then tested for the adsorption of two acid dyes (Acid Blue 25 and Calmagite) as ligands in the metal-coordinating proc-ess. The adsorption of Cu(II) onto ED-cotton and of the dyes onto Cu(II)/ED-cotton is followed spectrometrically. The observed stoichiometries of the ternary-formed complex [Dye/Cu(II)/ED-cotton] are 1/1/1 with Acid Blue 25 and 0.75/1/1 with Calmagite at 208C. The Langmuir and Freundlich isotherms constants for the adsorption of the tested dyes onto Cu(II)/ED-cotton are evaluated from the experimental data, but better agreement is obtained by using the composite isotherm of Jossens.

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Pore diffusion and external mass transport during dye adsorption on to Fuller's earth and silica

Abstract: A B S T R A C T

Cited by 16 publications

References 13 publications

Adsorption of mesitylene via mesoporous adsorbents

Adsorption of mesitylene via mesoporous adsorbents

The Change from Past to Future for Adsorbent Materials in Treatment of Dyeing Wastewaters

Use of copper(II)/ethylene diamine‐cotton complex for the adsorption of residual dyes

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