Prediction of Mass Transfer Coefficients in a Packed Bed using Tamarind Nut Shell Activated Carbon to Remove Phenol

Goud, Vaibhav V.; Mohanty, Kaustubha; Srinivasarao, Meka; Jayakumar, N.S.

doi:10.1002/ceat.200500099

Cited by 19 publications

(21 citation statements)

References 14 publications

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“…[21][22][23] The capacity at exhaustion q column (mg · g ) is determined by calculating the total area below the breakthrough curve. This area represents the amount of solute sorbed by mass of solid in the sorption zone that goes from the breakthrough to the exhaustion point.…”

Section: Methodsmentioning

confidence: 99%

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Cadmium and Lead Removal from Aqueous Solution by Grape Stalk Wastes: Modeling of a Fixed-Bed Column

et al. 2010

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Grape stalk wastes generated in the wine production process were used for the removal of cadmium and lead ions from aqueous solutions. The experimental breakthrough curves (BTC) were obtained from fixedbed columns. Experiments were carried out to evaluate the influence of both inlet metal concentration and sorbent particle size. The experimental data were fitted to the Thomas model, a well-established fixed-bed sorption model. The theoretical sorption capacities obtained by the Thomas model were in good agreement with the breakthrough capacities determined from the sorption data. The CXTFIT code was used to determine the transport and sorption parameters of the convective-dispersive equation (CDE) and the two-site deterministic nonequilibrium (TSM/CDE) model by adjusting the models to the experimental breakthrough curves. The results showed that sorption capacities as well as both transport and sorption parameters were affected by the initial metal concentration as well as by the sorbent particle size.

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Section: Methodsmentioning

confidence: 99%

“…This area represents the amount of solute sorbed by mass of solid in the sorption zone that goes from the breakthrough to the exhaustion point. [22][23][24][25] where C is the outlet metal concentration (mg · L -1 ) and m is the mass of sorbent (g).…”

Section: Methodsmentioning

confidence: 99%

Cadmium and Lead Removal from Aqueous Solution by Grape Stalk Wastes: Modeling of a Fixed-Bed Column

et al. 2010

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“…When the effluent concentration, namely C x (mg·L −1 ), is closely approaching to 90% of the initial concentration of sorbate, C 0 (mg·L −1 ), then the sorbent is considered to be essentially exhausted (Goud et al 2005;Gupta et al 2000). The capacity at exhaustion q 0 (mg·g −1 ) is determined by calculating the total area below the breakthrough curve.…”

Section: Breakthrough Capacitymentioning

confidence: 99%

Transport of Strontium Through a Ca-bentonite (Almería, Spain) and Comparison with MX-80 Na-bentonite: Experimental and Modelling

Valderrama

Giménez

Pablo

et al. 2010

Water Air Soil Pollut

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In this work, the sorption of strontium on a Ca-bentonite (CGA) from Almería (Spain) in column experiments was studied, and the results obtained were compared with the sorption onto the Nabentonite (MX-80). The code CTXFIT (two site non-equilibrium sorption model) was used in order to fit the experimental data and to determine sorption and transport parameters. The effect of inlet Sr(II) initial concentration and the ionic strength were evaluated. The results obtained showed that the sorption capacities as well as the transport and sorption parameters of both bentonites were affected by the initial metal concentration. In experiments with higher inlet concentrations, columns were saturated faster, leading to shorter breakthrough and exhaustion times. On the other hand, a decrease of sorption and transport parameters was observed at higher ionic strengths, which would confirm ion exchange as the main mechanism of Sr(II) sorption onto both bentonites. The sorption parameters (sorption capacity and retardation factor) obtained indicated that the Ca-bentonite from Almería (Spain) presented better sorption performance than the Na-bentonite, which was related to the physical properties of the Ca-bentonite.

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“…The breakthrough point is chosen arbitrarily at some low value, C b (mg L −1 ); and the sorbent is considered to be essentially exhausted when the effluent concentration, C x (mg L −1 ), reaches the 90% of C 0 (initial concentration of sorbate, mg L −1 ; Gupta et al 2000;Goud et al 2005).…”

Section: Breakthrough Capacitymentioning

confidence: 99%

“…This area represents the amount of solute sorbed by mass of solid in the sorption zone from the breakpoint to exhaustion (Al-Degs et al 2009;Gupta et al 2000;Goud et al 2005).…”

Section: Breakthrough Capacitymentioning

confidence: 99%

Evaluation of Phenol/Aniline (Single and Binary) Removal from Aqueous Solutions onto Hyper-cross-linked Polymeric Resin (Macronet MN200) and Granular Activated Carbon in Fixed-Bed Column

Valderrama

Barios

Farrán

et al. 2010

Water Air Soil Pollut

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This work was conducted to evaluate the sorption performance of hyper-cross-linked Macronet resin (MN200) compared to the granular activated carbon in order to remove phenol and aniline from aqueous solution in both single and binary solutions. Fixed-bed column experiments were used to obtain the breakthrough curves. The experimental data were fitted to the Thomas, Bed Depth Service Time and Yoon-Nelson models, well-established fixed-bed sorption models. The theoretical sorption capacities obtained by the Thomas model were in good agreement to the breakthrough capacities determined from the sorption data. The sorption capacity decreased in binary sorption for resin MN200, while activated carbon reported similar (aniline) or higher (phenol) sorption performance indicating a synergistic effect between both solutes on the activated carbon surface. A good prediction of the breakthrough curves in binary solution was obtained by using an approach that considers a simple model to describe a breakthrough curve (Thomas) and modified isotherm equilibrium. The resin MN200 fixed-bed columns were easily regenerated by using a methanol solution, reporting more above of 90% of recovery for both solutes, while about 50% was the recovery of activated carbon after single experiments. The regeneration after the binary sorption experiments reported a decrease in the solute recovery, effect that was especially evident for activated carbon.

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Prediction of Mass Transfer Coefficients in a Packed Bed using Tamarind Nut Shell Activated Carbon to Remove Phenol

Cited by 19 publications

References 14 publications

Cadmium and Lead Removal from Aqueous Solution by Grape Stalk Wastes: Modeling of a Fixed-Bed Column

Cadmium and Lead Removal from Aqueous Solution by Grape Stalk Wastes: Modeling of a Fixed-Bed Column

Transport of Strontium Through a Ca-bentonite (Almería, Spain) and Comparison with MX-80 Na-bentonite: Experimental and Modelling

Evaluation of Phenol/Aniline (Single and Binary) Removal from Aqueous Solutions onto Hyper-cross-linked Polymeric Resin (Macronet MN200) and Granular Activated Carbon in Fixed-Bed Column

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