Removal of lead from aqueous solutions using an immobilized biomaterial derived from a plant biomass

Sekhar, K. Chandra; Kamala, C. T.; Chary, N.S.; Sastry, A. R. K.; Rao, Tentu Nageswara; Vairamani, M.

doi:10.1016/j.jhazmat.2004.01.013

Cited by 86 publications

(17 citation statements)

References 29 publications

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“…The time needed to grow the plants for phytoremediation and the time required to decrease contaminant levels can take years or even decades [66]. Although many larger plants cannot be grown on flowing water bodies, plant bark has been successfully used as a biofiltration material for the removal of heavy metal from water [72].…”

Section: Pharmacological Agentsmentioning

confidence: 99%

Bioelectrochemical and Conventional Bioremediation of Environmental Pollutants

Pisciotta¹,

Dolceamore²

2016

J Microb Biochem Technol

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One of the first widely used, synthetically-produced pesticides was the organochloride class agent DDT. From the Second World War until its ban in the early 1970's, DDT was deployed on a vast scale for control of insects and insect-borne diseases and as a highly effective agricultural pesticide [11]. For example, over a half million pounds of DDT was applied to salt marshes in Cape May County, New Jersey

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Section: Pharmacological Agentsmentioning

confidence: 99%

Bioelectrochemical and Conventional Bioremediation of Environmental Pollutants

Pisciotta¹,

Dolceamore²

2016

J Microb Biochem Technol

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“…Biomass is a carbon rich source and shows ability to adsorb heavy metals due to the electrostatic interactions with negative surface charge on carbon . Enhanced adsorption capacity of carbonaceous materials can be obtained by the addition of different functional groups such as acidic oxygen, carboxylic, amino, phosphate and sulfate, lactonic, and basic nitrogen . Many researchers have reported the use of activated sludge biomass as cost effective sorbent for heavy metal removal from contaminated water and soil .…”

Section: Introductionmentioning

confidence: 99%

Removal of Copper and Hexavalent Chromium Using Immobilized Modified Sludge Biomass Based Adsorbent

Ramteke

Gogate

2016

CLEAN Soil Air Water

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The present work, deals with the development of an efficient modified sludge biomass (MSB) based adsorbent and subsequent application for the removal of copper and hexavalent chromium from wastewater. Different approaches of immobilization based on the use of polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), calcium alginate (CA), and activated carbon (AC) have been investigated with an objective of obtaining the most efficient biosorbent. Characterization studies for the adsorbents were performed followed by batch studies to compare the efficacy of different adsorbents for metal removal. Using the most efficient biosorbent, continuous operation studies were performed for understanding the effect of operating conditions such as initial pH, flow rate, inlet concentration, and bed height. The adsorption capacity was greatly affected by initial pH, adsorbent amount, contact time, and the type of polymer matrix. The order of adsorption capacities were MSB-PVA-CMC-AC > MSB-PVA-CMC > MSB-PVA > MSB-CA with maximum values being 288.6 and 215.4 mg g À1 for Cu(II) and Cr(VI), respectively. The experimental data were successfully fitted into different isotherms and kinetic models to establish the important design parameters. Reusability studies revealed that the MSB-PVA-CMC biosorbent could be reused for five biosorptiondesorption cycles without any significant loss in the adsorption capacity. Overall, the immobilized MSB on PVA-CMC has been demonstrated as an effective biosorbent for removal of copper and chromium.

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“…These mechanisms stem from prior exposure of microorganisms to metals which enable them to develop the resistance and tolerance useful for biological treatment [8]. It has also been shown that cells of plants, algae, fungi and bacteria, otherwise referred to as biomass, possess functional groups such as carboxyl, hydroxyl, sulphate, phosphate and amino that can bind metals [9].…”

Section: Introductionmentioning

confidence: 99%

Removal of Cr (VI) from Tannery Effluent and Aqueous Solution by Sequential Treatment with Microfungi and Basidiomycete-Degraded Sawdust

Ejechi¹,

Akpomie²

2016

JEP

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Removal of Cr (VI) from aqueous solution and tannery effluent in sequence with Cr (VI) resistant microfungi (Aspergillus niger, Penicillium chrysogenum) and sawdust degraded by basidiomycete (Gloeophyllum sepiarium) was investigated in the laboratory. Initial or primary treatment with microfungi reduced 200 mg/l Cr (VI) in aqueous solution by 64.6% -78.2% while a markedly lower 0.52 mg/l Cr (VI) in tannery effluent was reduced by 72.4% -84.6%. However, the residual Cr (VI) in both aqueous solution and tannery effluent was reduced to a non-detectable level after secondary treatment by passage through basidiomycete-degraded sawdust column. The recovery of 65.4% -87.7% of the Cr (VI) removed by treatment microfungi by elution indicated adsorption as the major mechanism for Cr (VI) removal. The microfungi reduced BOD in tannery effluent by 85.3 ± 5.6 -92.7 ± 6.8 and concomitantly removed Cr (VI), hence it is hypothesized that non-Cr (VI) constituents of tannery effluent may have interfered with biosorption of Cr (VI) by treatment microfungi. It is concluded that the two-stage sequential treatment process may be of potential cost-saving stratagem for removal of chromium from industrial wastes.

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Removal of lead from aqueous solutions using an immobilized biomaterial derived from a plant biomass

Cited by 86 publications

References 29 publications

Bioelectrochemical and Conventional Bioremediation of Environmental Pollutants

Bioelectrochemical and Conventional Bioremediation of Environmental Pollutants

Removal of Copper and Hexavalent Chromium Using Immobilized Modified Sludge Biomass Based Adsorbent

Removal of Cr (VI) from Tannery Effluent and Aqueous Solution by Sequential Treatment with Microfungi and Basidiomycete-Degraded Sawdust

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