tailieunhanh - Biosorption of heavy metals by cyanobacteria

Bio sorption potential of cyanobacteria in absorbing lead and chromium was carried out as an experimental study. The algae collected from the rice field are examined for the lead and chromium absorption potential. Visual changes, followed by disintegration of the cyanobacterial mat had gradually progressed with the increase in concentration of lead and chromium from 0 ppm to 150 ppm which indicates the metal absorption. | 2019 8 12 728-737 EXCELLENT PUBLISHERS International Journal of Current Microbiology and Applied Sciences ISSN 2319-7706 Volume 8 Number 12 2019 Journal homepage http Original Research Article https Biosorption of Heavy Metals by Cyanobacteria P. Jyothi Priya1 E. Suriya1 E. Jhon2 and P. Dhevagi3 Department of Environmental Sciences Tamil Nadu Agricultural University Coimbatore -3 India Corresponding author ABSTRACT Keywords Bio sorption Cyanobacteria Lead Chromium FTIR Article Info Accepted 07 November 2019 Available Online 10 December 2019 Bio sorption potential of cyanobacteria in absorbing lead and chromium was carried out as an experimental study. The algae collected from the rice field are examined for the lead and chromium absorption potential. Visual changes followed by disintegration of the cyanobacterial mat had gradually progressed with the increase in concentration of lead and chromium from 0 ppm to 150 ppm which indicates the metal absorption. The FT-IR spectra showed about 10 functional groups are involved in the future reactions of algae. The functional group dominant in lead treated cyanobacterial mat was OH and CO. The O-H Functional group which shows isomerism of a ketone group C-O which has the highest intensity when it comes to binding and reaction process. The cyanobacteria mat has shown better absorption in Cr VI than Pb IV . From the bio sorption study using the cyanobacterial mats showed promising results that would be efficient in reducing the heavy metal contamination in our ecosystem. Introduction Heavy metals occur naturally in the earth s crust and have a specific density of more than 5g cm3 SanaaShanab et al. 2012 . These elements are hazardous because of their non-biodegradable nature as a result of which they tend to accumulate in the tissues of living organisms and cause serious effects like bioaccumulation and bio-magnification in the food chain Singh .