Heavy Metal Removal From Multicomponent System

1286 Words Aug 9th, 2014 6 Pages
Heavy metal removal from multicomponent system by the cyanobacteria Nostoc muscorum

Jayeeta Hazarikaa, Kannan Pakshirajana*, Arindam Sinha Roya, Mayashree B. Syiemb a Department of Biotechnology, Indian Institute of Technology Guwahati, Assam 781039, India b Department of Biochemistry, North Eastern Hill University Shillong, Meghalaya 793022, India
Submitted to- Environmental science and pollution research

*Corresponding author: Dr. Kannan Pakshirajan, Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati781039, Assam, India. E-mail: pakshi@iitg.ernet.in; Tel. +91-361-2582210; Fax. +91-361- 2690762

In this study, Nostoc muscorum, a native cyanobacterial species isolated from a coal mining site, was employed to remove Cu(II), Zn(II), Pb(II) and Cd(II) from aqueous solution containing these metals in mixture. In this multicomponent study carried out as per the statistically valid Plackett-Burman design of experiments each of these metals were tested at either low (5 mg/L) or high (10 mg/L) levels, except for Pb(II) in which case it was tested at 5 mg/L or 50 mg/L, respectively. Results revealed a maximum removal of both Pb(II) (96.3 %) and Cu(II) (96.42 %) followed by Cd(II) (80.04 %) and Zn(II) (71.3 %) at the end of 60 h culture. However, these values varied depending upon the combination level of these metals in their respective mixtures. For a better understanding of the effect of these metals on each other…
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