Untreated coffee husks as biosorbents for the removal of heavy metals from aqueous solutions

Oliveira, Waleska E.; Franca, Adriana S.; Oliveira, Leandro S.; Rocha, Sônia Denise Ferreira

doi:10.1016/j.jhazmat.2007.07.085

Cited by 261 publications

(109 citation statements)

References 37 publications

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“…However, the best adjustment was observed for the pseudosecond-order kinetic which is based on the assumption that rate limiting step is chemisorption involving valance forces through sharing or exchange of electrons between As(III) ion and the adsorbent provides the best correlation data for the As(III) ion (Urik et al 2009). Similar phenomenon has been observed in the biosorption of heavy metals onto untreated coffee husks (Oliveira et al 2008). It was found from experimental results that 98.8 % removal for MLP and 93.6 % removal for RH was achieved at m = 7 and 6 g/l, respectively (Fig.…”

Section: Biosorption Kineticssupporting

confidence: 86%

“…5) active sites (Chen et al 2008;Bozic et al 2009). Similar behaviour for the effect of sorbent concentrations on metal sorption capacity was observed and discussed in the literature for a variety of sorbents (Kumar et al 2006;Oliveira et al 2008;Saeed et al 2009). The optimum percentage removal was achieved for As(III) at 7 and 6 g/l for MLP and RH, respectively.…”

Section: Effect Of Phsupporting

confidence: 80%

“…The fitting seems to be adequate and satisfactory (Oliveira et al 2008). The experimental data presented in Fig.…”

Section: Biosorption Kineticsmentioning

confidence: 67%

“…Also, after metal sorption, the metal-laden husks can be used as a source of energy through combustion (Saenger et al 2001;Oliveira et al 2008).…”

Section: Biosorption Thermodynamicsmentioning

confidence: 99%

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Biosorptive behaviour of mango leaf powder and rice husk for arsenic(III) from aqueous solutions

Kamsonlian

Suresh

Ramanaiah

et al. 2012

Int. J. Environ. Sci. Technol.

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The present study deals with the biosorption of As(III) from aqueous solution using mango leaves powder (MLP) and rice husk (RH) in a batch operation. Scanning electron microscopy and Fourier transformation infrared spectrometry analysis shows the surface texture of biosorbents and metal binding of functional groups of before and after biosorption of As(III). The optimum pH was obtained at 7 and 6 with 7 and 6 g/l of dosage of MLP and RH, respectively. The adsorption of As(III) onto MLP and RH was favourably influenced by an increase in temperature. Equilibrium data were well represented by the Freundlich isotherm model. Nitric acid and ethylenediaminetetra acetic acid was found to be a better eluant for the desorption followed by hydrochloric acid and sodium hydroxide of As(III) with a maximum desorption efficiency of 69.5, 48.5 and 79.4, 86.3 %, respectively. The pseudosecond-order kinetic model was found to best fitted of the experimental data over the equilibrium time at 32 h. The positive values of heat of adsorption (23.89 kJ/mol for MLP and 52.26 kJ/mol for RH) indicate the endothermic nature of the adsorption process. The thermodynamic study showed the spontaneous nature of the sorption of As(III) onto MLP and RH.

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Section: Biosorption Kineticssupporting

confidence: 86%

Section: Effect Of Phsupporting

confidence: 80%

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Biosorptive behaviour of mango leaf powder and rice husk for arsenic(III) from aqueous solutions

Kamsonlian

Suresh

Ramanaiah

et al. 2012

Int. J. Environ. Sci. Technol.

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show abstract

“…Table 5 (a and b). Non-occurrence of sorption of one ion per adsorption site exclusively was exhibited by the low correlation values obtained for the pseudo-first order kinetic model (Oliveira, Franca, Oliveira, & Rocha, 2008). By comparing the correlation coefficients, it can be considered that the pseudo-second order kinetic model is a better fit for the experimental data.…”

Section: Adsorption Kineticsmentioning

confidence: 96%

Valorization ofAdenanthera pavoninaseeds as a potential biosorbent for lead and cadmium removal from single and binary contaminated system

Sen

Goswami

Devi

et al. 2018

Geology, Ecology, and Landscapes

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This study investigated the biosorption of Pb (II) and Cd (II) on powdered seeds of Adenanthera pavonina from single and binary heavy metal solutions. The adsorption capacity of the metal ions was studied as a function of pH, adsorbent dose, initial metal ion concentration, and contact time. In the single heavy metal system, maximum removal of Pb (II) and Cd (II) were achieved at pH 4 and 6, respectively, while the equilibrium was attained at a contact duration of 35 min at a constant dose of 5 g L −1 was maintained for both Pb (II) and Cd (II). Further, the kinetic study revealed that the biosorption process was best described by the second-order kinetic model. In the competitive biosorption of binary mixtures of Pb (II) and Cd (II) were studied in terms of percentage removal of metal ions, adsorption capacity and equilibrium sorption isotherm. The percentage removal of metal ions in binary solutions was suppressed in presence of the other competitive metal ion. Field emission scanning electron microscopy integrated with energy dispersive X-ray spectroscopy of the biomass before (control) and after (metal loaded biomass) the biosoption process, confirmed the presence of respective heavy metal on to the biomass. Fourier transmission infrared spectroscopy spectra supported the activity of hydroxyl, amines, amides, and carboxyl groups in uptake of both heavy metal ions.

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Valorization of Agricultural Wastes as Low‐Cost Adsorbents Towards Efficient Removal of Aqueous Cr(VI)

Acharya

Parida

2022

Handbook of Biomass Valorization for Industrial Applications

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Untreated coffee husks as biosorbents for the removal of heavy metals from aqueous solutions

Cited by 261 publications

References 37 publications

Biosorptive behaviour of mango leaf powder and rice husk for arsenic(III) from aqueous solutions

Biosorptive behaviour of mango leaf powder and rice husk for arsenic(III) from aqueous solutions

Valorization ofAdenanthera pavoninaseeds as a potential biosorbent for lead and cadmium removal from single and binary contaminated system

Valorization of Agricultural Wastes as Low‐Cost Adsorbents Towards Efficient Removal of Aqueous Cr(VI)

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