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Cheraghpour, Javad, Etemadifar, Zahra, Afsharzadeh, Saeed, Bahador, Nima. (1399). Assessment of bioremediation potential of Microcystis aeruginosa for removal of cadmium and lead ions from aqueous matrices. سامانه مدیریت نشریات علمی, 19(4), 1994-2009. doi: 10.22092/ijfs.2018.119887.
Javad Cheraghpour; Zahra Etemadifar; Saeed Afsharzadeh; Nima Bahador. "Assessment of bioremediation potential of Microcystis aeruginosa for removal of cadmium and lead ions from aqueous matrices". سامانه مدیریت نشریات علمی, 19, 4, 1399, 1994-2009. doi: 10.22092/ijfs.2018.119887.
Cheraghpour, Javad, Etemadifar, Zahra, Afsharzadeh, Saeed, Bahador, Nima. (1399). 'Assessment of bioremediation potential of Microcystis aeruginosa for removal of cadmium and lead ions from aqueous matrices', سامانه مدیریت نشریات علمی, 19(4), pp. 1994-2009. doi: 10.22092/ijfs.2018.119887.
Cheraghpour, Javad, Etemadifar, Zahra, Afsharzadeh, Saeed, Bahador, Nima. Assessment of bioremediation potential of Microcystis aeruginosa for removal of cadmium and lead ions from aqueous matrices. سامانه مدیریت نشریات علمی, 1399; 19(4): 1994-2009. doi: 10.22092/ijfs.2018.119887.

Assessment of bioremediation potential of Microcystis aeruginosa for removal of cadmium and lead ions from aqueous matrices

Iranian Journal of Fisheries Sciences
مقاله 113، دوره 19، شماره 4، مهر 2020، صفحه 1994-2009    اصل مقاله (364.19 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22092/ijfs.2018.119887.
نویسندگان
Javad Cheraghpour1؛ Zahra Etemadifar* 2؛ Saeed Afsharzadeh2؛ Nima Bahador1
1Science and Research University of Fars
2University of Isfahan
چکیده
Capability of cyanobacterium Microcystis aeruginosa, isolated from effluent of a wastewater stabilization pond, for removal of cadmium and lead ions was investigated. Variation of removal efficiency as a function of metal concentration, pH, temperature and biomass dosage was studied. Also, use of closed reflux digestion technique as an innovative option for decomposition of cyanobacterial pellet was studied. A multi-phase washing method was developed in order to attain more elevated desorption efficiency. Maximum removal efficiency occurred in pH 7, temperature 28°C and biomass dosage 0.2g for Cd2+ and corresponding values of 6, 25°C and 0.1g for Pb2+. In all tested concentrations of lead and cadmium, extracellular absorption overweighed intracellular uptake with highest ratio of former to later of 172 for Cd2+and 143 for Pb2+. EC50 values attained for Cd2+and pb2+were respectively 20mg/l and 15mg/l. Closed-reflux digestion method was found as a good option for cyanobacterial pellet digestion. Three-stage consecutive washing procedure devised in our study gave desorption efficiencies of 92 and 86 percent for Cd2+ and Pb2+ respectively as compared with values of 52 and 44 percent for Cd2+ and pb2+ obtained by conventional washing procedure. This investigation verifies possibility of employing Microcystis aeruginosa for removal of Cd2+ and Pb2+ from aqueous and wastewater solutions.
کلیدواژه‌ها
bioremediation؛ Cadmium؛ Lead؛ Microcystis aeruginosa
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