Biosorption of Lead, Cadmium, and Zinc by Citrobacter Strain MCM B-181: Characterization Studies

Puranik, Pravin R.; Paknikar, Kishore M.

doi:10.1021/bp990002r

Cited by 232 publications

(113 citation statements)

References 30 publications

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“…These results showed that both Alternaria alternata and Penicillium aurantiogriseum are suitable for using as cadmium and mercury accumulators in wastewater. Similar results with respect to biosorption of cadmium and other heavy metals by fungi and bacteria have been reported earlier (Chang et al, 1997;Puranik and Paknikar, 1999;Costa et al, 2001;Pardo et al, 2003;Kefala et al, 1999;Ghoslan et al, 1999;Say et al, 2001;Watanabe et al, 2003;Ozdemir et al, 2004;Ayangbenro, and Babalola, 2017). Kumar et al, (2014) 2.55 mg/g of Cr respectively.…”

Section: Heavy Metals Concentrationssupporting

confidence: 88%

Fungal Biosorption for Cadmium and Mercury Heavy Metal Ions Isolated from Some Polluted Localities in KSA

Bahobil¹,

Bayoumi²,

Atta³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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Section: Heavy Metals Concentrationssupporting

confidence: 88%

Fungal Biosorption for Cadmium and Mercury Heavy Metal Ions Isolated from Some Polluted Localities in KSA

Bahobil¹,

Bayoumi²,

Atta³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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“…The rate of increase of chromium removal was not proportionate to the increase in bgh biomass, ( Figure 5). This could be attributed to interference between binding sites at higher concentrations (Puranik and Paknikar, 1999).…”

Section: Biosorption Kinetics and Effect Of Biomass Quantity On Chrommentioning

confidence: 99%

“…Higher chromium sorption at lower levels of bgh biomass could be due to the higher metal to biosorbent ratio, which decreases as the biomass quantity is increased (Puranik and Paknikar, 1999).…”

Section: Biosorption Kinetics and Effect Of Biomass Quantity On Chrommentioning

confidence: 99%

Biosorption of chromium (VI) from aqueous solutions by the husk of Bengal gram (Cicer arientinum)

Ahalya¹,

Kanamadi²,

Ramachandra³

2005

Electron. J. Biotechnol.

264

185

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The potential to remove Cr (VI) from aqueous solutions through biosorption using the husk of Bengal gram (Cicer arientinum), was investigated in batch experiments. The results showed removal of 99.9% of chromium in the 10 mgl -1 chromium solution, the biomass required at saturation was 1 g mg -1 . Kinetic experiments revealed that the dilute chromium solutions reached equilibrium within 180 min. The biosorptive capacity of the (bgh) was dependent on the pH of the chromium solution, with pH 2 being optimal. The adsorption data fit well with the Langmuir and Freundlich isotherm models. The adsorption capacity calculated from the Langmuir isotherm was 91.64 mg Cr (VI)/g at pH 2. The adsorption capacity increased with increase in agitation speed and an optimum was achieved at 120 rpm. The biosorption of Cr (VI) was studied by Fourier transform infrared spectroscopy (FTIR), which suggested that the presence of Cr (VI) ions in the biomass affects the bands corresponding to hydroxyl and carboxyl groups. Comprehensive characterisation of parameters indicates bgh to be an excellent material for biosorption of Cr (VI) to treat wastewaters containing low concentration of the metal.The discharge of heavy metals into aquatic ecosystems has become a matter of concern over the last few decades. The pollutants of serious concern include lead, chromium, mercury, uranium, selenium, zinc, arsenic, cadmium, gold, silver, copper, nickel, etc. due to pollutants' carcinogenic and mutagenic nature. These toxic materials may be derived from mining operations, refining ores, sludge disposal, fly ash from incinerators, the processing of radioactive materials, metal plating, or the manufacture of electrical equipment, paints, alloys, batteries, pesticides or preservatives.The commonly used procedures for removing metal ions from effluents include chemical precipitation, lime coagulation, ion exchange, reverse osmosis and solvent

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“…The effect of initial pH on the copper biosorption is given in Figure 1. Little copper uptake at low pH values is an indication of competition of excess of protons for the same binding sites on the algal cell wall (Puranik and Paknikar, 1999). The copper uptake increased with increasing pH, to the maximum near pH 5.5, then decreased at higher pH value.…”

Section: Effect Of Ph On Copper Biosorptionmentioning

confidence: 99%

Copper removal from aqueous solution by marine green alga Ulva reticulata

Velan¹,

Vijayaraghavan²,

Jegan³

et al. 2004

Electron. J. Biotechnol.

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The batch removal of copper (II) ions from aqueous solution under different experimental conditions using Ulva reticulata was investigated in this study. The copper (II) uptake was dependent on initial pH and initial copper concentration, with pH 5.5 being the optimum value. The equilibrium data were fitted using Langmuir and Freundlich isotherm model, with the maximum copper (II) uptake of 74.63 mg/g determined at a pH of 5.5. The Freundlich model regression resulted in high correlation coefficients and the model parameters were largely dependent on initial solution pH. At various initial copper (II) concentrations (250 to 1000 mg/L), sorption equilibrium was attained between 30 and 120 min. The copper (II) uptake by U. reticulata was best described by Pseudo-second order rate model and the rate constant, the initial sorption rate and the equilibrium sorption capacity were also reported. The elution efficiency for copper-desorption from U. reticulata was determined for 0.1 M HCl, H 2 SO 4 , HNO 3 and CaCl 2 at various Solid-to-Liquid ratios (S/L). The solution CaCl 2 (0.1 M) in HCl at pH 3 was chosen to be the most suitable copper-desorbing agent. The biomass was also employed in three sorption-desorption cycles with 0.1 M CaCl 2 (in HCl, pH 3) as the elutant.Heavy metals released into the environment by technological activities tend to persist indefinitely, circulating and eventually accumulating throughout the food chain, becoming a serious threat to the environment. The main sources of heavy metal pollution include electroplating, painting, dying, surface treatment industry,

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Biosorption of Lead, Cadmium, and Zinc by Citrobacter Strain MCM B-181: Characterization Studies

Cited by 232 publications

References 30 publications

Fungal Biosorption for Cadmium and Mercury Heavy Metal Ions Isolated from Some Polluted Localities in KSA

Fungal Biosorption for Cadmium and Mercury Heavy Metal Ions Isolated from Some Polluted Localities in KSA

Biosorption of chromium (VI) from aqueous solutions by the husk of Bengal gram (Cicer arientinum)

Copper removal from aqueous solution by marine green alga Ulva reticulata

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