Screening of Marine Algae of Oman Gulf for Biosorption of Cobalt

نوع مقاله: مقاله پژوهشی

نویسندگان

1 1- Nuclear Research Center, AEOI, P.O. Box: 14155-1339, Tehran - Iran

2 Nuclear Research Center, AEOI, P.O. Box: 14155-1339, Tehran - Iran

3 2- Offshore Fisheries Research Center, Chabahar - Iran

چکیده

Batch experiments were conducted to study the ability of marine algae collected from Oman Gulf, Iran, for sorption of cobalt from the metal nitrate solution. The biosorption experiments were performed using native and chemically pretreated sun-dried biomass of marine algae. Our finding indicated that MgCl2 pretreated Cystoseria indica, Sargassum glaucescens and Padina australis had more sorption capacities, while the CaCl2 pretreated ones showed lower capacity (comparing with non-treated native biomass). Also, a fall in the cobalt uptake capacity of Nizimuddinia zanardini, Gracilaria corticata, G. arcuata, Botryocladia leptopoda, Scinaia carnosa, Hypnea valentiae, Ulva fasciata and Codium sp. took place after treatment with chemicals, including CaCl2 (0.1 M), MgCl2 (0.1 M), CaCl2 (0.1 M)/HCl (pH 2) and HCl (0.1 M). Biosorption of cobalt was rapidly took place onto algal biosorbents and most of the sorbed metal ion was bound in the first minutes of contact. Uptake of cobalt was pH-dependent and the most cobalt removal occurred at pH 4. In our screening investigations, brown algae (Dictyota indica, N. zanardini, P. australis, S. glaucescens, and C. indica) removed cobalt most efficiently from aqueous solution, respectively. The capability of marine algae for separation of 60Co was tested and a high 60Co removal was demonstrated.
 

کلیدواژه‌ها


عنوان مقاله [English]

Screening of Marine Algae of Oman Gulf for Biosorption of Cobalt

نویسندگان [English]

  • S.T Dalir 1
  • H Ghafourian 1
  • H Ghods 2
  • Y Asef 2
  • M.H Sahafipour 2
  • B.M Gharanjik 3
  • R Jalali-Rad 1
چکیده [English]

Batch experiments were conducted to study the ability of marine algae collected from Oman Gulf, Iran, for sorption of cobalt from the metal nitrate solution. The biosorption experiments were performed using native and chemically pretreated sun-dried biomass of marine algae. Our finding indicated that MgCl2 pretreated Cystoseria indica, Sargassum glaucescens and Padina australis had more sorption capacities, while the CaCl2 pretreated ones showed lower capacity (comparing with non-treated native biomass). Also, a fall in the cobalt uptake capacity of Nizimuddinia zanardini, Gracilaria corticata, G. arcuata, Botryocladia leptopoda, Scinaia carnosa, Hypnea valentiae, Ulva fasciata and Codium sp. took place after treatment with chemicals, including CaCl2 (0.1 M), MgCl2 (0.1 M), CaCl2 (0.1 M)/HCl (pH 2) and HCl (0.1 M). Biosorption of cobalt was rapidly took place onto algal biosorbents and most of the sorbed metal ion was bound in the first minutes of contact. Uptake of cobalt was pH-dependent and the most cobalt removal occurred at pH 4. In our screening investigations, brown algae (Dictyota indica, N. zanardini, P. australis, S. glaucescens, and C. indica) removed cobalt most efficiently from aqueous solution, respectively. The capability of marine algae for separation of 60Co was tested and a high 60Co removal was demonstrated.
 

کلیدواژه‌ها [English]

  • Marine algae
  • Algal sorbents
  • Chemical pretreatment
  • Kinetics
  • Oman
  • Cobalt biosorption
  • cobalt
R. Jalali, H. Ghafourian, Y. Asef, S. J. Davarpanah and S. Sepehr, "Removal and recovery of lead using nonliving biomass of marine algae", J. Hazard. Mater. B92, 253-262 (2002).

 

  • R. V. Fogarty and J. M. Tobin, "Fungal melanins and their interactions with metals", Enz. Microb. Technol. 19, 311-317 (1996).

     

  • N. Akthar, S. Sastry and M. Mohan, "Biosorption of silver ions by processed Aspergillus niger biomass", Biotechnol. Lett. 17, 5, 551-556 (1995).

     

    C. C. Lange, L. P. Wackett, K. W. Minton and M. J. Daly, "Engineering a recombinant Deinococcus radiodurans for organopollutant degradation in radioactive mixed waste environments", Nature Biotechnol. 16, 929-933 (1998).

     

    M. D. Tucker, L. L. Barton and B. M. Thomson, "Kinetic coefficients for simultaneous reduction of sulfate and uranium by Desulfovibrio desulfuricans", Appl. Microbiol. Biotechnol. 46, 74-77 (1996).

     

  • H. L. Ehrlich, " Microbes and metals", Appl Microbiol Biotechnol, 48, 687-692 (1997).

     

  • B. Volesky and Z. R. Holan, "Biosorption of heavy metals", Biotechnol. Prog. 11, 235-250 (1995).

     

  • P. Ginisty, B. Besnainou, C. Sahut and J. Guezennec, "Biosorption of cobalt by Pseudomonas halodenitrificans: influence of cell wall treatment by alkali and alkaline-earth metals and ion-exchange mechanisms", Biotechnol. Lett. 20, 11, 1035-1039 (1998).

     

    N. Kuyucak and B. Volesky, "Accumulation of cobalt by marine alga", Biotechnol. Bioeng. 33, 809-814 (1989).

     

  • S. Amiel, "Production and utilization of radioisotopes: some general aspects", Radioisotope Production and Quality Control, IAEA, 7-17 (1971).

     

  • H. J. Glenn et al., "Isotopes used in pharmacology and nuclear medicine", Radionuclides in Pharmacology, 1, 523-536 (1971).