ROLE OF CYANOBACTERIA IN HEAVY-METAL REMOVAL FROM WATER AND WASTEWATER BY BIOSORPTION PROCESSAbstract
Heavy metal toxicity has been a subject of concern for the past few decades. Due to the emerging awareness about the detrimental health hazards and adverse effects across all the levels of any ecosystem, the removal of heavy metals (HM) from contaminated water systems and soil has gained the profound attention of the scientific community for the last couple of decades. Living and dead cells of biological organisms have found to have capable of retaining the harmful HMs substantially from aqueous and solid matrix. This review encompasses the efficacy of cyan bacterial cells in removing HMs from contaminated water and wastewaters. The different strains collected from different sources which are capable of removing specific species have been discussed along with the biotic and biotic factors affecting the process have been assessed. Also, the mechanism of toxicity and removal of HMs through biosorption and bioaccumulation by these cells have been taken into consideration. The thorough knowledge of the cyanobacterial removal of HMs can be a solution towards sustainable, cost-effective green technology.
Arghya Nath, Dooja Singh, Somashree Das, Parna Dey and Atreyi Ghosh *
Department of Microbiology and Biotechnology, Sister Nivedita University, West Bengal, Kolkata, India.
13 March 2022
09 May 2022
04 May 2022
01 November 2022