Vol. 1, Issue 2 (2016)
Studies on the impact of thermal ash on the productivity of algae (Cyanobacterium): Spirulina platensis
Author(s): Sugnanam Sai Durga Prasad, Kunjam Mallikarjuna
Abstract: In the present investigation various concentrations of ash produced from thermal power stations by burning coal were used to study the impact on the growth and productivity of cyanobacterium, Spirulina platensis by measuring the photosynthetic activity. The results clearly indicated the decrease in the growth and productivity. The electron transport measurements studies done with the cells grown in the presence of different ash concentration reveled the inhibition of photosystem II catalyzed transport activity by 50% and 10% the Photosystem I. The ash caused the inhibition in the whole chain electron transport activity at very low concentrations. Between the two photosystems I and II the photosystem II seems to be more susceptible towards the ash concentrations. The possible reasons for the decrease in the electron transport activity in the investigated algae, cyanobacterium, Spirulina platensis is due to the presence of heavy metals in the ash content coming out from the thermal power plants and may be changes in the phycobili proteins.