Biosorption of toxic heavy metals from aqueous solutions

Senthilkumaar, S.; Bharathi, S.; Nithyanandhi, D; Subburam, V.

doi:10.1016/s0960-8524(00)00021-3

Cited by 95 publications

(37 citation statements)

References 10 publications

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“…Pineapple fruit residues have been used as an effective biosorbent to remove toxic metals like mercury, lead, cadmium, copper, zinc and nickel (Senthilkumaar et al, 2000). They have reported that the addition of phosphate groups in the fruit residues increased the adsorbent capacities at lower pH.…”

Section: Removal Of Heavy Metalsmentioning

confidence: 99%

Utilization of Pineapple Waste: A Review

Upadhyay

Lama

Tawata

2013

J Food Sci Technol Nepal

107

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Section: Removal Of Heavy Metalsmentioning

confidence: 99%

Utilization of Pineapple Waste: A Review

Upadhyay

Lama

Tawata

2013

J Food Sci Technol Nepal

107

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“…These groups have the ability to interact with metal ions, which is dependent on the pH. An increase in metal adsorption with increasing pH values can be explained on the basis of competition between the proton and metal ions for the same functional groups and a decrease in the positive surface charge, which results in a higher electrostatic attraction between the surface and the metal (Senthilkumaar et al 2000). With an increase of pH, the solubility of metal complexes decreases enough for precipitation to occur, defeating the biosorptive process.…”

Section: Determination Of Optimum Parameters and Adsorption Studiesmentioning

confidence: 99%

Assessment of the Use of Moringa oleifera Seeds for Removal of Manganese Ions from Aqueous Systems

Marques¹,

Alves²,

Coelho³

et al. 2013

BioResources

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Moringa oleifera seeds were investigated for the removal of manganese ions from aqueous solutions. The seeds utilized were obtained from plants grown in Uberlândia, Brazil. After being dried and pulverized, the seeds were treated with 0.1 mol L -1 NaOH. Using the optimized methodology (50 mL of 4.0 mg L -1 Mn(II), pH range of 4.0-6.0, contact time of 5 min, and biosorbent mass of 0.5 g) it was found that 100% of Mn(II) could be removed from water samples. In order to remove up to 95% of Mn ions in 50 mL of a laboratory residue produced during biochemical oxygen demand determinations with 112.0 mg L -1 of manganese, the contact time and pH were maintained, but a mass of 3.0 g was used. The kinetic data were fitted to a pseudo-second-order kinetic model. The sorption data were fitted satisfactorily to the Langmuir and Freundlich isotherm models. Evaluation applying the Langmuir equation gave the monolayer sorption capacity as 5.61 mg/g. In this application the method was found to be efficient, fast, simple, and economical.

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“…A lot of materials such as bark, chitosan, wool, cotton, clay, bacteria, fungi, alginate, dead biomass, waste fruit residues and others [4,[6][7][8] have been reported to have an effective performance in removing heavy metals from industrial effluents.…”

Section: Introductionmentioning

confidence: 99%

Removal of Cd(II), Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: Kinetic modelling

Freitas

Martins

Delerue–Matos

et al. 2008

Journal of Hazardous Materials

152

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Specific marine macro algae species abundant at the Portuguese coast (Laminaria hiperborea, Bifurcaria bifurcata, Sargassum muticum and Fucus spiralis) were shown to be effective for removing toxic metals (Cd(II), Zn(II) and Pb(II)) from aqueous solutions. The initial metal concentrations in solution were about 75-100 mg L -1 . The observed biosorption capacities for cadmium, zinc and lead ions were in the ranges of 23.9-39.5 mg g -1 , 18.6-32.0 mg g -1 and 32.3-50.4 mg g -1 , respectively. Kinetic studies revealed that the metal uptake rate was rather fast, with 75% of the total amount occurring in the first 10 min for all algal species.Experimental data were well fitted by a pseudo-second order rate equation. The contribution of internal diffusion mechanism was significant only to the initial biosorption stage. Results indicate that all the studied macro algae species can provide an efficient and cost-effective technology for eliminating heavy metals from industrial effluents.

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Biosorption of toxic heavy metals from aqueous solutions

Cited by 95 publications

References 10 publications

Utilization of Pineapple Waste: A Review

Utilization of Pineapple Waste: A Review

Assessment of the Use of Moringa oleifera Seeds for Removal of Manganese Ions from Aqueous Systems

Removal of Cd(II), Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: Kinetic modelling

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