Volume No. 6 Issue No.: 3A Page No.: 702-708 Jan-Mar 12

 

POTENTIAL OF Nostoc muscurom AND Anabaena subcylindrica FOR THE BIOREMOVAL OF SOME METALS FROM AQUEOUS SOLUTION

 

Pramod C. Mane* and Arjun B. Bhosle

School of Earth Sciences, Swami Ramanand Teerth Marathwada University, Nanded, Maharashtra (INDIA)

 

Received on : November 25, 2011

 

ABSTRACT

 

In recent years, the biosorption processes have been studied extensively using microbial biomass as biosorbents for heavy metal ions removal. In these studies, metal ions removal abilities of various species of bacteria, algae, fungi and yeasts were investigated. Algae have been proven efficient biological vectors for heavy metal uptake. In order to further study their biosorption potential, two strains Nostoc muscurom and Anabaena subcylindrica have been studied under different initial metal concentrations. In recent years, the biosorption processes have been studied extensively using microbial biomass as biosorbent for heavy metal ions removal. In these studies, metal ions removal abilities of various species of bacteria, algae, fungi and yeasts were investigated. The discharge of heavy metals into aquatic ecosystems has become a matter of concern over the last few decades. The biosorption of six metal ions from artificial wastewaters containing single metal ions was investigated in batch experiments. Both the strains of algae collected from National Chemical Laboratory (NCL) tested for chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), selenium (Se) and zinc (Zn) removal from aqueous solution. The concentration of all the six metal ion species in the absorption medium was varied between 5 and 25 mg/l. The residual concentration of metals from the absorption medium was determined by using UV spectrophotometer. From the tested algae after seven days of incubation period, the highest percent bioremoval by Nostoc muscurom for Cr (98.70%), Cu (74.13%), Fe (98.73%), Mn (98.26%), Se (99.12%) and Zn (73.20%) respectively. The same by Anabaena subcylindrica for Cr (97.00%), Cu (75.66%), Fe (98.00%), Mn (93.53%), Se (98.93%) and Zn (51.53%) respectively at 5 mg/l initial metal concentration.

 

Keywords : Algal biomass, Percent bioremoval, Heavy metal ions, Aqueous solution, UV spectrophotometer

 

 

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