Single and binary biosorption of Cu(II), Ni(II) and methylene blue by raw and pretreated Spirogyra sp.: Equilibrium and kinetic modeling

Güler, Ülker Aslı; Sarıoğlu, Meltem

doi:10.1016/j.jece.2013.05.017

Cited by 62 publications

(38 citation statements)

References 42 publications

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“…26 In this study decreasing the particle size from 1000 to <250μm increased the percentage removal of Cd(II) 22.5 to 91.6% while percentage removal of Pb(II) increased from 24.8 to 93.7% on SH (Figure 6). The increase in the percentage removal of Cd(II) and Pb(II) ions with decreasing adsorbent particle size in this study is attributable to a decrease in the surface area of adsorbent available for metal ions binding (Figure 9).…”

Section: Figurementioning

confidence: 52%

Characterization and Adsorption Isotherm Studies of Cd (II) And Pb (II) Ions Bioremediation from Aqueous Solution Using Unmodified Sorghum Husk

Olawale

et al. 2017

JABB

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Contamination of environment by heavy metals has become a major concern worldwide. The role of conventional methods in remediating heavy metals has become ineffective and costly. Therefore, it becomes imperative to explore bioremediation using a cost effective, efficient and environmentally friendly alternative method of removing heavy metals. In this study, the adsorption behavior of Sorghum husk, a low-cost adsorbents, with respect to Pb +2 and Cd 2+ ions, has been studied in order to consider its application to the treatment of wastewater. The physicochemical properties of the unmodified sorghum husk were predetermined. The batch experimental method was employed: parameters such as pH, contact time, particle size and initial metal concentration were studied. The influence of the pH of the metal ion solutions on the uptake levels of the metal ions by the adsorbent used was carried out between pH 3 and 8. The optimum pH for Pb +2 and Cd +2 removals by sorghum husk were 6 and 5 respectively. An equilibrium time of 80min was required for the adsorption of Pb +2 and 60min for Cd +2 ions onto sorghum husk. Percentage sorption of Pb +2 increased from 21 to 80% and that of Cd +2 from 15 to 55% as adsorbent dose was increased from 0.1 to 1g while adsorption capacity decreased from 14 to 5.3mg/g for Pb +2 and 32.5 to 9.3mg/g for Cd +2 with increase in dose. Percentage removal of Pb +2 increased from 24.8 to 93.7% while that of Cd +2 from 22.4 to 91.6% with decrease in adsorbent particle size from 1000μm to 100μm. The uptake capacity of the adsorbent increased from 6.5 to 12.4mg/g for Pb +2 and 2.1 to 5.3mg/g for Cd +2 as the initial metal ion concentration was raised from 50 to 200mg/L. The experimental data was fitted into the Langmuir and Freundlich models; the data was best fitted with the Langmuir model. The results demonstrated that sorghum husk holds potential to remove cationic heavy metal species from industrial wastewater.Keywords: bioremediation, adsorption, wastewater, heavy metals, isotherms Journal of Applied Biotechnology & Bioengineering Research ArticleOpen Access Characterization and adsorption isotherm studies of Cd (II) and Pb (II) ions bioremediation from aqueous solution using unmodified sorghum husk 114Copyright: ©2017 Tatah et al. Citation:Tatah VS, Otitoju O, Ezeonu CS, et al. Characterization and adsorption isotherm studies of Cd (II) and Pb (II) ions bioremediation from aqueous solution using unmodified sorghum husk.

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Section: Figurementioning

confidence: 52%

Characterization and Adsorption Isotherm Studies of Cd (II) And Pb (II) Ions Bioremediation from Aqueous Solution Using Unmodified Sorghum Husk

Olawale

et al. 2017

JABB

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“…Manganese attained maximum removal at 50g with 61.62% removal, Lead attained maximum removal at 60g with 99.93% removal while Zinc attained a 100% removal using 20g of groundnut husk powder as adsorbent further increase in mass of the adsorbent brought no change in adsorption of zinc. The percentage removal of Mn(II), Zn(II) and Pb(II) ions in this study, increased with increasing dosage due mainly to an increase in the number of available exchangeable active sites for metal ion sorption [17].…”

Section: Fourier Transform Infra-red Spectroscopy (Ftir) Analysismentioning

confidence: 59%

“…While percentage removal of zinc decreased from 99.23% to 79.71% and 95.12% to 82.85% for lead as the particle size increases from 0.5mm to 2mm. The particle size of a biosorbent has a tremendous effect on the biosorption process [17]. The increase in the percentage removal of manganese, lead and zinc ions with decreasing biosorbent particle size in this study is attributable to a decrease in the surface area of biosorbent available for metal ions binding.…”

Section: Effect Of Ph On Removal Of Metal Ionsmentioning

confidence: 64%

“…Hence the low sorption at low pH in this study was thus due to saturation of the active sites of groundnut husk with hydrogen ions. However, an initial metal sorption observed with increase in pH was due to a decrease in competition between hydrogen ions and metal ions for the biosorbents surface binding sites and also due to decrease in positive surface charge, which resulted in less electrostatic repulsion between the surface and metal ions before ion exchange which is the major mechanism of metal uptake [17]. As the pH of the solution increases, more negatively charged surface becomes available thus facilitating greater metal biosorption.…”

Section: Effect Of Ph On Removal Of Metal Ionsmentioning

confidence: 99%

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Biosorption Kinetics of Heavy Metals from Fertilizer Industrial Waste Water Using Groundnut Husk Powder as an Adsorbent

Klc

et al. 2017

JABB

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Groundnut husk (GH) was used as an adsorbent to remove Mn2+, Zn2+ and Pb2+ ions from fertilizer industrial wastewater. FTIR-spectrum shows the participation of aromatic compounds (C=C), Aldehydes (C=O) and Alkenes (C=C) in adsorption due to their absence in the adsorbent after the process. Batch adsorption experiments were conducted to examine the effect of adsorbent mass, pH and contact time on adsorption of Mn2+, Zn2+ and Pb2+ from fertilizer industrial waste water. The results showed that Mn2+, Pb2+ and Zn2+ attained maximum percentage removal of 61.62%, 99.93% and 100% at adsorbent dose of 50g, 60g and 20g respectively. However the maximum percentage removal of Mn2+ and Pb2+ was achieved at pH 6 for 80min. while that of Zn2+ was achieved at pH 3 for 60min. Langmuir biosorption isotherm provided the best fit for sorption of Mn2+ and Pb2+ using groundnut husk as indicated by their correlation coefficient ( ) of 0.558 and 0.441 hence the process was based on a physisorption mechanism. The kinetic studies showed that the biosorption process followed the pseudo-second order reaction order. This study has demonstrated that groundnut husk can be efficiently used as low cost alternative adsorbent for remediation of Mn2+, Zn2+ and Pb2+ from heavy metals contaminated wastewater.

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“…However, these methods present some disadvantages such as high cost, low removal efficiency and production of excessive toxic sludge [17]. Recently, inexpensive, ecofriendly and not pathogenic organisms have been used for the dye removal [18]. In this respect, the biosorption process has attracted a great interest in this context, and seems a good alternative for the removal of dyes and other pollutants from wastewaters [19,20], as a replacement for costly commercially biosorbents [21].…”

Section: Introductionmentioning

confidence: 99%

Biosorption of cationic dye from aqueous solutions onto lignocellulosic biomass (Luffa cylindrica): characterization, equilibrium, kinetic and thermodynamic studies

et al. 2016

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In the present study, biomass fiber (Luffa cylindrica) has been successfully used as biosorbent for the removal of a cationic dye namely, methylene blue, from aqueous solution using a batch process. The characterization of the biosorbent was carried out by the infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The chemical composition has been established by the energy dispersive X-Ray spectroscopy (EDS). The effects of various parameters such as the contact time (0-160 min), solution pH (2-10), biosorbent dose (0.5-8 g L -1 ), particle size, initial MB concentration (20-300 mg L -1 ) and temperature (20-60°C) were optimized. The biosorption isotherms were investigated by the Langmuir, Freundlich, Dubinin-Radushkevich and Tempkin models. The data were well fitted with the Langmuir model, with a maximum biosorption capacity of 49.46 mg g -1 at 20°C. The kinetics data were analyzed by the pseudo-first-order and pseudo-second-order models. The mass transfer model in terms of interlayer diffusion was applied to examine the mechanisms of the rate-controlling step (R 2 = 0.9992-0.9999). The thermodynamic parameters: free energy (DG°= -5.428 to -3.364 kJ mol -1 ), enthalpy (DH°= -20.547 kJ mol -1 ) and entropy (DS°= -0.052 kJ mol -1 K -1 ) were determined over the temperatures range (20-60°C). The results indicate that Luffa cylindrica could be an interesting biomass of alternative material with respect to more costly adsorbents used nowadays for dye removal.

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Single and binary biosorption of Cu(II), Ni(II) and methylene blue by raw and pretreated Spirogyra sp.: Equilibrium and kinetic modeling

Cited by 62 publications

References 42 publications

Characterization and Adsorption Isotherm Studies of Cd (II) And Pb (II) Ions Bioremediation from Aqueous Solution Using Unmodified Sorghum Husk

Characterization and Adsorption Isotherm Studies of Cd (II) And Pb (II) Ions Bioremediation from Aqueous Solution Using Unmodified Sorghum Husk

Biosorption Kinetics of Heavy Metals from Fertilizer Industrial Waste Water Using Groundnut Husk Powder as an Adsorbent

Biosorption of cationic dye from aqueous solutions onto lignocellulosic biomass (Luffa cylindrica): characterization, equilibrium, kinetic and thermodynamic studies

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