Waste Water Treatments Using Cyanobacteria

The purpose of the current research was to screen cyanobacteria from waste water treatments to find out the efficiency of heavy metal removal. Totally, 22 cyanobacteria were screened, such as Arthrospira jenneri, Aphanocapsa koordersi, A. platensis, Gloeocapsa crepidium, G. gelatinosa, G. livida, G. punctata, G. samoensis, G. sanguine, Hyella caespitose, Oscillatoria acuminate, O. amoena, O. homogenea, O. laetevirens, O. minimus, O. pseudogeminata, O. schultzii, O. subbrevis, O. trichoides, Spirulina laxissima, S. meneghiniana and S. subtilissima for various waste waters such as dairy waste water, kitchen waste water, fish pond discharge and municipal waste water. Screening of cyanobacteria treatment of wastewater reduces the BOD, COD, TN and TP. The removing maximum percentages are determined by the kitchen waste water and fish pond discharge, whereas biochemical oxygen demand, chemical oxygen demand, total nitrogen, and total phosphorus by the selected potential cyanobacteria like Oscillatoria trichoides (121.0%, 135.5%, 30.5%, and 10.9%) and Spirulina laxissima (105.7%, 115.4%, 32.7%, and 11.5%). The removal efficiency of heavy metals such as Cu2+, Fe2+, Zn2+ and Pb2+. The maximum achieved removals were recorded at 99.88% and 99.84% for Zn2+ (Oscillatoria trichoides) in kitchen waste water and fish pond discharge. The significance of variance at a confidence level of P<0.05 and P<0.01 is recorded. The use of cyanobacteria performs a variety of tasks in the assembly of excess food, the treatment of wastewater, and the production of valuable biomass, all of which have a variety of uses. For a healthy environment and society, it is essential to remove heavy metal ions from wastewater.

Abirami S*1, Muruganandam A1 and Ambikapathy V2 Click here to download file

Research Article | Published online : 31-Mar-2023