Biosorptive removal of cadmium from contaminated groundwater and industrial effluents

Pandey, Piyush Kant; Verma, Yashu; Choubey, Shweta; Pandey, Madhurima; Chandrasekhar, K.

doi:10.1016/j.biortech.2007.08.026

Cited by 60 publications

(33 citation statements)

References 21 publications

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“…(iii) Sorption to extracellular anionic biopolymers and sludge solid particles [2,8,16,20,27]; (iv) Heavy metal ion solubility, whereby soluble metal ions are present in the sludge and liquid fraction of the sludge [39,40].…”

Section: Mechanisms Of Biosorption Of Metal Ionsmentioning

confidence: 99%

Cd(II), Pb(II) and Zn(II) Removal from Contaminated Water by Biosorption Using Activated Sludge Biomass

Ahmad

Ghufran

Faizal

2010

CLEAN Soil Air Water

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Biosorption using activated sludge biomass (ASB) as a potentially sustainable technology for the treatment of wastewater containing different metal ions (Cd(II), Pb(II) and Zn(II)) was investigated. ASB metal uptake clearly competed with protons consumed by microbial biomass compared with control tests with non-activated sludge biomass. Biosorption tests confirmed maximum exchange between metal ions and protons at pH 2.0 -4.5. It was revealed by the study that the amount of metal ions released from the biomass increased with biomass sludge concentration. The result showed that maximum absorption of metal ions was observed for Cd(II) at pH 3.5, Pb(II) at pH 4.0, and pH 4.5 for Zn(II) ions. The maximum absorption capacities of ASB for Cd(II), Pb(II) and Zn(II) were determined to be 59.3, 68.5 and 86.5%, respectively. The biosorption of heavy metals was directly proportional to ASB stabilization corresponding to a reduction in heavy metals in the order of Cd a Pb a Zn. The order of increase of biosorption of metal ions in ASB was Zn(II) a Pb(II) a Cd(II), and this was opposite to that of non active sludge. The results indicate that ASB is a sustainable tools for the bioremediation of Cd(II), Pb(II) and Zn(II) ions from industrial sludge and wastewater treatment plants.

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Section: Mechanisms Of Biosorption Of Metal Ionsmentioning

confidence: 99%

Cd(II), Pb(II) and Zn(II) Removal from Contaminated Water by Biosorption Using Activated Sludge Biomass

Ahmad

Ghufran

Faizal

2010

CLEAN Soil Air Water

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“…The progress of adsorption was noted at different time intervals (20 min) till the attainment of equilibrium. Effect of contact time had been studied by many authors (Pandey et al 2008;Selatnia et al 2004). At definite time intervals separation of the adsorbent and solution was carried out by filtration with whatman filter paper number 41.…”

Section: Batch Experimentsmentioning

confidence: 99%

Adsorption of lead using a new green material obtained from Portulaca plant

Dubey

Shiwani

2011

Int. J. Environ. Sci. Technol.

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In the present study the potential of a new green material obtained from Portulaca oleracea plant was investigated. The material was used without any chemical treatment to study the adsorption behavior of lead ions from aqueous solution. Various batch experiments were carried out using different experimental conditions such as pH, contact time, adsorbent concentration, and metal ion concentration to identify the optimum conditions. The influence of these parameters on the adsorption capacity was studied. Results showed the optimum initial pH for adsorption as 6. Adsorption equilibrium was reached in 120 min. The adsorption data were modeled using both the Langmuir and Freundlich classical adsorption isotherms. Results show *78% removal of lead from aqueous solution. The kinetic data corresponded well with pseudo second-order equation. From the initial results, the green material obtained from the waste of Portulaca seems to be a potential low-cost adsorbent for removal of lead ions from water.

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“…Many previous authors have investigated the effect of contact time on biosorption process, as well as the biosorption kinetics (Al-Anber and Matouq, 2008;El-Ashtoukhy et al, 2008;Pandey et al, 2008;Selatnia et al, 2004). As shown in Fig.…”

Section: Effect Of Contact Time and Biosorption Kineticsmentioning

confidence: 99%

Typha domingensis leaf powder for decontamination of aluminium, iron, zinc and lead: Biosorption kinetics and equilibrium modeling

Abdel‐Ghani

Hegazy

El-Chaghaby

2009

Int. J. Environ. Sci. Technol.

107

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ABSTRACT:The present study explores the effectiveness of Typha domingensis leaf powder for simultaneous removal of aluminium, iron, zinc and lead ions from aqueous solution. Batch experiments were carried out in laboratory at room temperature and at initial ions concentrations simulating the concentrations of these cations in real wastewater samples. The sorption process was examined applying the first and second order kinetic mechanisms. The results were best described by the second order rate kinetics. The applicability of the three equilibrium isotherm models was investigated. The obtained data follow the three investigated isothermal models in the following order: Langmuir > Freundlich > Temkin, for all the studied metal ions. The infrared spectra of native and exhausted Typha leaf powder confirmed ions-biomass interactions responsible for sorption. The results showed that Typha domingensis leaf powder can easily be envisaged as a new low cost natural biosorbent for metal clean up operations in aquatic systems.

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Biosorptive removal of cadmium from contaminated groundwater and industrial effluents

Cited by 60 publications

References 21 publications

Cd(II), Pb(II) and Zn(II) Removal from Contaminated Water by Biosorption Using Activated Sludge Biomass

Cd(II), Pb(II) and Zn(II) Removal from Contaminated Water by Biosorption Using Activated Sludge Biomass

Adsorption of lead using a new green material obtained from Portulaca plant

Typha domingensis leaf powder for decontamination of aluminium, iron, zinc and lead: Biosorption kinetics and equilibrium modeling

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