Removal of mercury(II) from aqueous solution using moss (Drepanocladus revolvens) biomass: Equilibrium, thermodynamic and kinetic studies

Sarı, Ahmet; Tüzen, Mustafa

doi:10.1016/j.jhazmat.2009.06.023

Cited by 124 publications

(54 citation statements)

References 50 publications

(66 reference statements)

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“…Various conventional adsorbents such as carbon materials, carbons derived from agricultural wastes and industrial wastes, biomaterials, and other materials have been investigated for the mercury removal (Yardim et al 2003;Labidi 2008;Anirudhan et al 2008;Sari and Tuzen, 2009;Mehdinia et al 2015;Vasudevan et al 2012;Wang et al 2014) but they are not highly efficient. Therefore, researchers are still making great efforts to identify new adsorbents with high capacities and efficacies.…”

Section: Introductionmentioning

confidence: 99%

Isotherm, kinetic, and thermodynamic studies on Hg(II) adsorption from aqueous solution by silica- multiwall carbon nanotubes

Saleh

2015

Environ Sci Pollut Res

542

141

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Silica combined with 2% multiwall carbon nanotubes (SiO2-CNT) was synthesized and characterized. Its sorption efficacy was investigated for the Hg(II) removal from an aqueous solution. The effect of pH on the percentage removal by the prepared material was examined in the range from 3 to 7. The adsorption kinetics were well fitted by using a pseudo-second-order model at various initial Hg(II) concentrations with R (2) of >0.99. The experimental data were plotted using the interparticle diffusion model, which indicated that the interparticle diffusion is not the only rate-limiting step. The data is well described by the Freundlich isotherm equation. The activation energy (Ea) for adsorption was 12.7 kJ mol(-1), indicating the process is to be physisorption. Consistent with an endothermic process, an increase in the temperature resulted in increasing mercury removal with a ∆H(o) of 13.3 kJ/mol and a ∆S(o) 67.5 J/mol K. The experimental results demonstrate that the combining of silica and nanotubes is a promising alternative material, which can be used to remove the mercury from wastewaters.

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Section: Introductionmentioning

confidence: 99%

Isotherm, kinetic, and thermodynamic studies on Hg(II) adsorption from aqueous solution by silica- multiwall carbon nanotubes

Saleh

2015

Environ Sci Pollut Res

542

141

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“…On the other hand, biosorption has emerged as an effective alternative to the above-mentioned methods due to low operating cost, short operation time and absence of toxic by-product production (11). Among a number of biological materials available for biosorption, including moss (12), lichen (13) and fungus (14), algae have been recognized as a potent biosorbent material due to its easy and cheap availability, greater surface area and high metal binding capacity (15,16). Over the time period, brown and green algae have been exploited for heavy metal removal in comparison to red algae (17).…”

Section: Introductionmentioning

confidence: 99%

Equilibrium, kinetic and thermodynamic biosorption studies of Hg(II) on red algal biomass ofPorphyridium cruentum

Zaib

Athar

Saeed

et al. 2016

Green Chemistry Letters and Reviews

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Among a variety of microbial materials employed for biosorption, algae have added advantages of non-toxic and autotrophic nature. In this study, biosorption of Hg(II) was studied with red algal biomass of Porphyridium cruentum. The parameters affecting biosorption such as dosage of biosorbent, pH, contact time, initial metal concentration, temperature and effect of foreign metal cations in binary system were evaluated. Kinetic data were described with the help of pseudofirst-order and pseudo-second-order kinetic models. Langmuir, Freundlich, Temkin and DubininRadushkevich isotherm models were applied to adsorption equilibrium data. According to the results, the maximum removal capacity (q max ) was 2.62 mg/g observed at pH 7 with 0.25 g/L of biosorbent dosage for Hg(II) solution containing 10 mg/L of metal ions. The Langmuir isotherm model fits best to the adsorption data while the kinetic data followed the pseudo-second-order model. Thermodynamics studies showed that the biosorption process of Hg(II) on P. cruentum was exothermic in nature.ARTICLE HISTORY

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“…The major advantages of biosorption are its high effectiveness in reducing the heavy metals and the use of inexpensive biosorbents [6]. Biosorption studies using various low cost biomass as adsorbents have been currently performed widely for the removal of heavy metals from aquatic effluent [7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Lanthanides Using Select Marine Biomass

Kano¹

2013

Biomass Now - Sustainable Growth and Use

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Removal of mercury(II) from aqueous solution using moss (Drepanocladus revolvens) biomass: Equilibrium, thermodynamic and kinetic studies

Cited by 124 publications

References 50 publications

Isotherm, kinetic, and thermodynamic studies on Hg(II) adsorption from aqueous solution by silica- multiwall carbon nanotubes

Isotherm, kinetic, and thermodynamic studies on Hg(II) adsorption from aqueous solution by silica- multiwall carbon nanotubes

Equilibrium, kinetic and thermodynamic biosorption studies of Hg(II) on red algal biomass ofPorphyridium cruentum

Biosorption of Lanthanides Using Select Marine Biomass

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