Color removal from dye wastewaters by adsorption using powdered activated carbon: Mass transfer studies

Yeh, Ruth Yu‐Li; Thomas, Adrian

doi:10.1002/jctb.280630107

Cited by 57 publications

(9 citation statements)

References 5 publications

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“…1/n (13) where qe (mg g -1 ) is the amount adsorbed at equilibrium and Ce (mg L The Redlich-Peterson isotherm model is widely used as a compromise between the Langmuir and Freundlich systems, since it combines elements from both the Langmuir and Freundlich equations, where the mechanism of adsorption is a hybrid one and does not follow ideal monolayer adsorption. The Redlich-Peterson isotherm has a linear dependence on concentration in the numerator and an exponential function in the denominator [35].…”

Section: Adsorption Isothermsmentioning

confidence: 99%

“…However, most of these techniques are expensive and incapable of the complete removal of dyes from solutions. Adsorption using activated carbon (granular or powder) has shown considerable potential for dye removal owing to its large surface area, microporous structure, high adsorption capacity, simplicity of design and ease of operation [13]. However, the higher cost of this material limits its use.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Use of Agro‐Industrial Wastes for Removal of Basic Dyes from Aqueous Solutions

Parab

Sudersanan

Shenoy

et al. 2009

CLEAN Soil Air Water

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The biosorption potential of three different agro-industrial waste materials of lignocellulosic origin, i. e., coir pith (CP), sawdust (SD) and sugarcane fiber (SF), is investigated in the case of basic dyes, i. e., crystal violet (CV) and rhodamine B (RB). The uptake of dyes from aqueous solutions is found to be rapid when using these candidate biosorbents. The application of various kinetic models reveals good correlation of a pseudo-second order kinetics model with the experimental data. Equilibrium adsorption data have been analyzed using nonlinearized forms of the Langmuir, Freundlich and Redlich-Peterson isotherms, to determine the best fit equation for the adsorption process. Experimental results show that all of the adsorbents are effective for the removal of dyes from aqueous solutions and their adsorption capacities are comparable with other reported adsorbents. Since the agricultural solid waste materials used in the present investigation are freely and abundantly available, the adsorption process is expected to be economically viable for wastewater treatment.

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Section: Adsorption Isothermsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Use of Agro‐Industrial Wastes for Removal of Basic Dyes from Aqueous Solutions

Parab

Sudersanan

Shenoy

et al. 2009

CLEAN Soil Air Water

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“…According to Ash et al bilirubin adsorbing efficacy of powdered activated charcoal is greater than of granulated charcoal, which is further supported by work from Müller showing that increased adsorption rate of bilirubin is linked to smaller adsorption particles. Decreasing the size of adsorbent particles leads to an increased concentration gradient towards the particle core as a result of a lowered internal diffusion resistance . We also found that octanoate and N‐acetyl‐tryptophanate could be removed more effectively by powdered charcoal.…”

Section: Discussionmentioning

confidence: 69%

Targeting Albumin Binding Function as a Therapy Goal in Liver Failure: Development of a Novel Adsorbent for Albumin Dialysis

et al. 2017

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Liver failure results in impaired hepatic detoxification combined with diminished albumin synthesis and is associated with secondary organ failure. The accumulation of liver toxins has shown to saturate albumin binding sites. This was previously demonstrated by an in vitro test for albumin binding capacity (ABiC) that has shown to inversely correlate with the established MELD (Model for End-Stage Liver Disease) score. In this study, we introduced a new adsorbent material for albumin dialysis treatments that improves albumin binding capacity. The new charcoal adsorbent was developed by an evolutionary test schedule. Batch testing of charcoals was performed as steady-state experiments. The charcoal reflecting the highest increase in albumin binding capacity was then introduced to kinetic models: Perfusion tests were designed to evaluate adsorption capacity and kinetics for liver failure marker toxins. A dynamic recirculation model for liver failure was used for upscaling and comparison against conventional MARS adsorbents as the gold standard in an albumin dialysis setting. Batch tests revealed that powdered activated Hepalbin charcoal displayed the highest ABiC score. Hepalbin charcoal also demonstrated higher adsorptive capacity and kinetics for liver failure marker toxins as determined by perfusion tests. These findings translated to tests of upscaled adsorbents in a dynamic model for liver failure: upscaled Hepalbin adsorbent removes bile acids, direct bilirubin and indirect bilirubin significantly better than MARS adsorbents and significantly increases ABiC. The novel adsorbent Hepalbin offers a significant improvement over both MARS adsorbents concerning liver failure marker toxin removal and ABiC improvement.

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“…However, the most widely used and the most easily reached adsorbent for dyes is activated carbon as granule or powder [145]. However, the most widely used and the most easily reached adsorbent for dyes is activated carbon as granule or powder [145].…”

Section: Adsorptionmentioning

confidence: 99%