Abstract
Microalgae growth at an industrial level has expanded and broadly diversified. Microalgae biomass production from textile effluent is a possible solution for the environmental effect of discharging the effluent into natural water bodies. This study was conducted to know the efficiency of microalgae in the bioremediation of industrial wastewater. The study comprises a comparison between the efficiency of bacterial biomass and microalgae for bioremediation of wastewater. Chlorella Vulgaris, a microalgal species treatability, was studied to efficiently reduce chemical oxygen demand (COD) from industrial effluent. The method involved the analysis of effluent from Common Effluent Treatment Plants (CETPs) and parameters such as pH, dissolved oxygen (DO), mixed liquor suspended solids (MLSS), chemical oxygen demand (COD) were measured. All setups were analyzed by providing specific HRT. This research work showed that microorganisms such as bacteria (conventional biomass) and microalgae enable the removal of pollutants from industrial wastewater. In the setup I, it was observed that the control reactor was able to remove maximum COD of 51%, whereas microalgae removed 56% of COD without adding any nutrition. And in setup II, maximum COD removal efficiency of control was obtained with 56% (with cow dung as a nutrient), whereas 65% was obtained using microalgae (no nutrient was added). The application of microalgae in effluent treatment has many advantages other than pollutants removal, such as CO2 mitigation, aeration cost, and sludge quantity, etc. This study concludes that microalgae could be more effective by providing sufficient nutrients and favorable conditions to microorganisms.
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Gohel, K., Moondra, N., Christian, R.A. (2022). A Comparative Study on Treatment of Industrial Wastewater Using Conventional Biomass and Chlorella Vulgaris. In: Dikshit, A.K., Narasimhan, B., Kumar, B., Patel, A.K. (eds) Innovative Trends in Hydrological and Environmental Systems. Lecture Notes in Civil Engineering, vol 234. Springer, Singapore. https://doi.org/10.1007/978-981-19-0304-5_10
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