Kinetic study of brilliant green adsorption from aqueous solution onto white rice husk ash

Tavlieva, Mariana P.; Genieva, Svetlana; Georgieva, Velyana G.; Vlaev, L. T.

doi:10.1016/j.jcis.2013.07.052

Cited by 124 publications

(64 citation statements)

References 53 publications

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“…The value of C represents the boundary layer thickness whereby the larger the value, the greater is the boundary layer effect. In the Boyd model, adsorption can occur within the pores (particle diffusion) or occur at the external surface (film diffusion) (Tavlieva et al 2013). According to this model, the plot of B t against t (Figure not shown) will yield a straight line passing through the origin if the adsorption is governed by particle diffusion and if not, the process is controlled by film diffusion.…”

Section: Effect Of Contact Time and Kinetics Modellingmentioning

confidence: 99%

Removal of the methyl violet 2B dye from aqueous solution using sustainable adsorbent Artocarpus odoratissimus stem axis

2016

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This study investigates the potential of the stem axis of Artocarpus odoratissimus fruit (TSA) as an adsorbent for the removal of methyl violet 2B (MV). The functional group analysis was carried out using Fouriertransform infrared spectroscopy. Investigation of the effects of pH and ionic strength provide insights on the involvement of electrostatic attraction and hydrophobichydrophobic attraction between the adsorbent and adsorbates. Kinetics models (pseudo-first-order, pseudo-secondorder, Weber-Morris and Boyd) and isotherm models (Langmuir, Freundlich and Dubinin-Raduskevich) were used for characterising the adsorption process. The Langmuir model predicted a high q m of 263.7 mg g -1 . Thermodynamics studies indicate the adsorption system is spontaneous, endothermic and physical sorption dominant. The spent adsorbent was successfully regenerated using water and obtained adsorption capacity close to the unused adsorbent even after fifth cycle of washing.

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Section: Effect Of Contact Time and Kinetics Modellingmentioning

confidence: 99%

Removal of the methyl violet 2B dye from aqueous solution using sustainable adsorbent Artocarpus odoratissimus stem axis

2016

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“…In most of the articles investigated in the literature, it was observed that experimental data usually adjust better to the pseudo-second order kinetic model because the adsorption process is dependent on both the concentration of the adsorbate with the strength of the adsorbent [48,52,12,51,61,62,63]. …”

Section: Contact Timementioning

confidence: 99%

“…By contrast, at high dosages, the articles of adsorbent compete to bind the same dye molecules, thus providing a quantitative measure of the amount of adsorbed dye per unit weight of adsorbent decreasing [46,62,63]. …”

Section: Dosagementioning

confidence: 99%

Use of Cellulosic Materials as Dye Adsorbents — A Prospective Study

Silva¹,

Lima²,

Bezerra³

et al. 2015

Cellulose - Fundamental Aspects and Current Trends

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“…The Boyd model can be used to investigate whether the adsorption occurs within the pores (particle diffusion) or occurs at the external surface (film diffusion) (Tavlieva et al 2013). According to this model, the plot of B t against t (figure not shown) will yield a straight line passing through the origin if the adsorption is governed by particle diffusion.…”

Section: Kinetic Studiesmentioning

confidence: 99%

Cempedak durian as a potential biosorbent for the removal of Brilliant Green dye from aqueous solution: equilibrium, thermodynamics and kinetics studies

Dahri

Lim

Mei

2015

Environ Monit Assess

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Cempedak durian peel (CDP) was used to remove Brilliant Green (BG) dye from aqueous solution. The adsorption of BG onto CDP was studied as functions of contact time, pH, temperature, ionic strength and initial concentration. In order to understand the adsorption process and its mechanisms, adsorption isotherm and kinetics models were used. The experiments were done under optimized 2-h contact time and ambient pH. Adsorption study showed that the Langmuir model best fitted with experimental data, and the maximum adsorption capacity was determined as 0.203 mmol g(-1) (97.995 mg g(-1)). Adsorption kinetics followed the pseudo 2nd order model, and intraparticle diffusion is involved but not as the rate-limiting step while Boyd model suggests that film diffusion might be in control of the adsorption process. Fourier transform infrared (FTIR) analysis showed that OH, C=O, C=C and NH functional groups might be involved in the adsorption of BG onto CDP. Thermodynamic study suggested that the adsorption of BG onto CDP is endothermic with ΔH (o) value of 12 kJ mol(-1) and adsorption is feasible. Regeneration of CDP's ability to remove BG was also studied using three different washing solutions. NaOH (0.1 M) was not only sufficient to be used to regenerate CDP's ability to remove BG but also improved its adsorption capability.

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Kinetic study of brilliant green adsorption from aqueous solution onto white rice husk ash

Cited by 124 publications

References 53 publications

Removal of the methyl violet 2B dye from aqueous solution using sustainable adsorbent Artocarpus odoratissimus stem axis

Removal of the methyl violet 2B dye from aqueous solution using sustainable adsorbent Artocarpus odoratissimus stem axis

Use of Cellulosic Materials as Dye Adsorbents — A Prospective Study

Cempedak durian as a potential biosorbent for the removal of Brilliant Green dye from aqueous solution: equilibrium, thermodynamics and kinetics studies

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