A comparative investigation on the bioaccumulation of heavy metal ions by growing Rhizopus arrhizus and Aspergillus niger

Dursun, Arzu; Uslu, Gülşad; Tepe, Özlem; Cucı, Yakup; Ekiz, H. İbrahim

doi:10.1016/s1369-703x(02)00187-0

Cited by 71 publications

(24 citation statements)

References 16 publications

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“…Loukidou et al (21) reported a higher removal ability by chemically modified Penicillium chrysogenum than with an unmodified biomass. Dursun et al (22) have reported the application of growing cultures for the bioaccumulation of heavy metals. In the present work, the growing cultures have also exhibited promising metal removal efficiency.…”

Section: Discussionmentioning

confidence: 99%

Trivalent Arsenic Tolerance and Accumulation in Two Facultative Marine Fungi

Vala

Sutariya²

2012

Jundishapur J Microbiol

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Section: Discussionmentioning

confidence: 99%

Trivalent Arsenic Tolerance and Accumulation in Two Facultative Marine Fungi

Vala

Sutariya²

2012

Jundishapur J Microbiol

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“…The bioaccumulation process is defined as the transfer of organic or inorganic pollutants into the interior of living cells (Barron, 1995). The process involves use of growing cells in metal ion removal (Inthorn, 2001;Dursun et al, 2003). Conversely biosorption is a metabolically passive process which involves uptake of toxicants by dead or inactive biological materials.…”

Section: Introductionmentioning

confidence: 99%

Adsorption behaviour of cadmium byBacillus cereusM¹₁₆: some physical and biochemical studies

Ganguly

Guha

Ray

2011

Chemical Speciation & Bioavailability

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Adsorption behaviour of cadmium from its aqueous solution by growing and non-growing cells of a mutant strain of Bacillus cereus M 1 16 has been studied to explore the possibility of the biomass to address environmental pollution due to this toxic metal. The results establish that about 75% and 88% of the cadmium can be removed by growing and non-growing cells of the selected strain respectively from its aqueous solution at pH 6.8 AE 0.2, temperature 30 AE 1 C and 120 rpm shaking speed. For growing cells, inoculum size 2% and medium volume 50 mL is found to be optimum. The adsorption rate of cadmium on the biomass is very fast initially and attains equilibrium within 60 min following pseudo second-order rate model (R 2 ¼ 0:99). The equilibrium adsorption isotherm can be best described by Langmuir -Freundlich dual model (R 2 ¼ 0:99) indicating that both physisorption and chemisorption take place simultaneously. Cadmium can be desorbed from the loaded biomass using mineral acids (0.1 M).

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“…Biosorption is the process in which biomass is simply used as adsorbent [3][4] . Bioaccumulation process involves using growing biomass in metal ions removal or binding [5][6][7][8] . Ions are partly bound on the cellular surface, and partly are transferred into the cellular interior.…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation of Cr(III) ions by Blue-Green alga Spirulina sp. Part I. A Comparison with Biosorption

Chojnacka¹

2007

American J. of Agricultural and Biological Sciences

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Abstract:The paper presents the results of studies on kinetics and equilibrium of bioaccumulation process of Cr(III) ions by blue-green alga Spirulina sp. Bioaccumulation was described as the process that consists of two stages, passive (identical with biosorption) and active (accumulation inside the cells). The passive stage (similarly as biosorption itself) was found to be quick process and the subsequent active stage (accumulation) was much slower and required metabolic activity of cells. The overall equilibrium of bioaccumulation process was reached after ca. 30 hours. The efficiency of bioaccumulation was compared with biosorption performance of cells grown under the same conditions. Two applications of bioaccumulation were discussed: metal ions removal from wastewater and metal ions binding to the biomass to produce biological feed supplement with microelements. The experimental results showed that bioaccumulation capacity was greater than biosorption capacity. Wastewater treated by the process of bioaccumulation contained lower residual metal ions concentration due to equilibrium shift of external (biosorptive) metal ions binding capacity towards lower values, resulting in lower residual metal ions concentration and thus higher treatment efficiencies. If bioaccumulation was considered as the method of biomass enrichment to produce mineral feed supplements for livestock, bioaccumulation enabled to bind more microelements, not only to the surface of cell wall, but also to accumulate inside the cells.

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A comparative investigation on the bioaccumulation of heavy metal ions by growing Rhizopus arrhizus and Aspergillus niger

Cited by 71 publications

References 16 publications

Trivalent Arsenic Tolerance and Accumulation in Two Facultative Marine Fungi

Trivalent Arsenic Tolerance and Accumulation in Two Facultative Marine Fungi

Adsorption behaviour of cadmium byBacillus cereusM¹₁₆: some physical and biochemical studies

Bioaccumulation of Cr(III) ions by Blue-Green alga Spirulina sp. Part I. A Comparison with Biosorption

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A comparative investigation on the bioaccumulation of heavy metal ions by growing Rhizopus arrhizus and Aspergillus niger

Cited by 71 publications

References 16 publications

Trivalent Arsenic Tolerance and Accumulation in Two Facultative Marine Fungi

Trivalent Arsenic Tolerance and Accumulation in Two Facultative Marine Fungi

Adsorption behaviour of cadmium byBacillus cereusM116: some physical and biochemical studies

Bioaccumulation of Cr(III) ions by Blue-Green alga Spirulina sp. Part I. A Comparison with Biosorption

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Adsorption behaviour of cadmium byBacillus cereusM¹₁₆: some physical and biochemical studies