Removal of coloured organic matter by adsorption onto low-cost waste materials

Bousher, A.; Shen, Xiaodong; Edyvean, R.G.J.

doi:10.1016/s0043-1354(97)00037-7

Cited by 164 publications

(93 citation statements)

References 15 publications

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“…There are many processes available for removal of color from waste effluents, namely chemical oxidation (McClung and Lemley 1994), foam flotation (Lin and Lo 1996), electrolysis (Bousher et al 1997), biodegradation (Oakes and Gratton 1998), adsorption (Poulios and Aetopoulou 1999;Ncibi et al 2007), chemical coagulation (Papic et al 2000) and photocatalysis (Lopez-Grimau and Gutierrez 2006;Divya et al 2013). However, adsorption onto activated carbon seems to be one of the effective and reliable physicochemical treatment methods (Pala and Tokat 2002;Mall et al 2005) and due to economical and environmentally friendly reasons (Toor and Jin 2012).…”

Section: Introductionmentioning

confidence: 99%

Application of response surface methodology (RSM) for optimization of color removal from POME by granular activated carbon

Al-Khatib

Mamun

Akbar

2014

Int. J. Environ. Sci. Technol.

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Color is one of the major remaining contaminants in the palm oil mill effluent (POME) following the conventional treatment of POME. The removal of color from POME using adsorption on activated carbon was investigated. The adsorption experimental design was performed using the standard response surface method (RSM) design that is central composite design to determine the optimum process variables for color removal by using the Design-Expert software (version 7.0. Stat-Ease, trial version). Besides obtaining optimum values, RSM also has the advantage of studying the interaction between various experimental parameters compared to one-factor-at-a-time. The equilibrium experimental data were analyzed by Langmuir and Freundlich isotherms. The statistical analysis showed that the quadratic model as well as the model terms was significant. The model had very low probability value (0.0003). The R 2 for the model was 0.9184 and the adjusted R 2 was 0.8380. The validation of the model showed experimental value and predicted value of 0.124 and 0.106, respectively. The optimum conditions suggested by the model for the process variable were 87.9 min, 4.05 and 7.86 g, for time, pH and granular activated carbon dose, respectively. The maximum removal obtained at these conditions was 89.95 %. The adsorption isotherm data were fitted well to the Langmuir isotherm compared to Freundlich isotherm with R 2 value of 0.850 for the former and 0.273 for the later.

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Section: Introductionmentioning

confidence: 99%

Application of response surface methodology (RSM) for optimization of color removal from POME by granular activated carbon

Al-Khatib

Mamun

Akbar

2014

Int. J. Environ. Sci. Technol.

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“…the controlling step. Bousher et al (1997) established that the adsorption of Basic dyes onto adsorbents with high cellulose concentration occurs via coulombic interactions and ion exchange. It has also been demonstrated that, unlike adsorption involving conventional adsorbents such as activated clay, the removal of Basic dyes by chemical interaction with peat influences the kinetic process McKay 1998b, 1999).…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Basic Dye Adsorption onto Sphagnum Magellanicum Peat

Contreras

Martinez

Sepúlveda

et al. 2007

Adsorption Science & Technology

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ABSTRACT:The purpose of this study was to investigate the adsorption of two Basic dyes, i.e. Basic Blue 3 (BB3) and Basic Orange 2 (BO2), onto Sphagnum Magellanicum peat. The equilibrium studies were carried out at 30 o C and 45 o C, respectively. The equilibrium experimental results were fitted to the Langmuir model to obtain the characteristic parameters. The maximum sorption capacities for each dye were 41 mg/g for BB3 and 92 mg/g for BO2. The magnitude of the a L parameter increased with temperature for both dyes. The batch kinetic studies of Basic dye adsorption onto peat considered the effect of the initial concentrations of the dyes and the peat dosage. The models fitted were first order (Lagergren equation), pseudo-second order (chemisorption mechanism) and intra-particle diffusion. For all the systems studied, the pseudo-second-order model provided the best correlation. The intra-particle diffusion model provided good correlations over the intermediate and final steps of the adsorption process.

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“…This model equation was given in Equation 8. The values of k f and q e were obtained from the slope and intercept respectively of plots of log (q e −q t ) versus t (Fig.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Adsorptive Removal Behaviour of Procion Mx-R Dye From SRDW by Chitosan

Gönen¹

2016

Appl Ecol Env Res

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Abstract. In this study, the application of chitosan for the removal of Procion MX-R dye from synthetic reactive dye wastewater (SRDW) was investigated under ambient conditions. The optimum conditions for the adsorption of Procion MX-R dye onto the adsorbent was found to be: pH (4.0), adsorbent dose (1.0 g), temperature of 35°C for an initial Procion MX-R dye concentration of 100 mg/L. Langmuir and Freundlich adsorption isotherm models were applied which fitted the data with R 2 value of 0.990. The adsorption of Procion MX-R on chitosan was confirmed by SEM study, as it showed the change in characterization before and after adsorption. The kinetic results showed that the rate of dye adsorption follows pseudo-second-order model for the dye concentration range studied in the present case. In addition, various thermodynamic parameters, such as standard Gibbs free energy (ΔG°), standard enthalpy (ΔH°) and standard entropy (ΔS°) have been calculated. It has been found that the chitosan/dye interaction was feasible, spontaneous and exothermic in nature. As a result, chitosan have been shown to be a very efficient and low-cost adsorbent, and a promising alternative for eliminating dyes from industrial wastewaters.

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Removal of coloured organic matter by adsorption onto low-cost waste materials

Cited by 164 publications

References 15 publications

Application of response surface methodology (RSM) for optimization of color removal from POME by granular activated carbon

Application of response surface methodology (RSM) for optimization of color removal from POME by granular activated carbon

Kinetics of Basic Dye Adsorption onto Sphagnum Magellanicum Peat

Adsorptive Removal Behaviour of Procion Mx-R Dye From SRDW by Chitosan

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