The effect of Cd (II), Pb (II) and Cu (II) ions on the growth and bioaccumulation properties of Rhizopus arrhizus

Uslu, Gülşad; Dursun, Arzu; Ekiz, H. İbrahim; Aksu, Zümríye

doi:10.1016/s0032-9592(03)00032-3

Cited by 39 publications

(18 citation statements)

References 19 publications

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“…It was also observed that the uptake reached 70% during the first 15 minutes. Uslu et al, (2003) reported optimum initial pH and temperature for growing cells of Rhizopus arrhizus were 4.0 and 25 o C, respectively. The culture was able to remove 54.9 and 30.5% total Pb(II) ions at 50 and 75 ppm initial metal ion concentrations, respectively.…”

Section: Journal For Hazardous Substance Research Volume Five 1-14mentioning

confidence: 98%

Bioaccumulation of Pb(II) From Aqueous Solutions by Bacillus cereus M1 16

Ray¹,

Paul²,

Bera³

et al. 2006

Journal of Hazardous Substance Research

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Because of the severity of heavy metal contamination and potential adverse health impact on the public, tremendous efforts have been made to purify waters containing toxic metal ions. Biosorption is presented as an alternative to traditional physicochemical means for removing toxic metals from groundwaters and wastewaters. Removal of lead from solution was studied using growing cells and washed cells of Bacillus cereus M 1 16. The removal of Pb(II) ions with growing cells was maximum (85%) when initial lead concentration was 50 mg/L. Other process conditions were optimized. These were volume of medium: 40 ml in a 250-ml Erlenmeyer fl ask, temperature: 30 o C, pH: 6.0, fermentation time: 30 hours, and inoculum concentration (24-hour cell growth): 4%. Biosorption of Pb(II) on washed biomass of the selected strain was investigated in batch mode and optimum conditions were determined. The uptake of metal was very fast, and equilibrium was attained within 30 minutes. It was found that the overall adsorption process was best described by pseudo second-order kinetics. Both Langmuir and Freundlich isotherms were tested, and it was found that the latter had a better fi t with the data. The adsorption continuously increased in the pH range of 3.6 -6.0, beyond which the adsorption could not be carried out due to precipitation of metal. The highest value of lead uptake was 96%, with 1.

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Section: Journal For Hazardous Substance Research Volume Five 1-14mentioning

confidence: 98%

Bioaccumulation of Pb(II) From Aqueous Solutions by Bacillus cereus M1 16

Ray¹,

Paul²,

Bera³

et al. 2006

Journal of Hazardous Substance Research

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show abstract

“…However some of the conventional technologies are ineffective and unfavorable as they cause sludge disposal problem, expensive and incomplete removal (Tuzun et al, 2005;Volesky, 2001). The utilization of sorption technology using biomaterial from marine algae for the treatment of heavy metal contaminated wastewaters has become an alternative method to conventional treatments (Uslu et al, 2003;Zouboulis et al, 2004;Kapoor and Viraraghavan, 1997;Akar et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Optimization, equilibrium, kinetic, thermodynamic and desorption studies on the sorption of Cu(II) from an aqueous solution using marine green algae: Halimeda gracilis

Jayakumar

Rajasimman

Karthikeyan

2015

Ecotoxicology and Environmental Safety

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“…The utilization of biosorption technology for the treatment of heavy metal contaminated wastewaters has become an alternative method to conventional treatments [6][7][8][9]. Biosorption utilizes various natural materials including fungi, yeast and bacteria that have been studied to sequester metal ions from aqueous solution [10].…”

Section: Introductionmentioning

confidence: 99%