Bioremediation of sewage wastewater through microalgae (Chlorella minutissima)

GULSHAN KUMAR SHARMA; SHAKEEL A KHAN; MANOJ SHRIVASTAVA; N GUPTA; SANDEEP KUMAR; LAL CHAND MALAV; MAHAVEER NOGIYA; S K DUBEY

doi:10.56093/ijas.v90i10.107985

Authors

GULSHAN KUMAR SHARMA Division of Environmental Sciences, Centre for Environmental Science and Climate Resilient Agriculture, ICAR - Indian Agricultural Research Institute, Pusa, New Delhi, India
SHAKEEL A KHAN Division of Environmental Sciences, Centre for Environmental Science and Climate Resilient Agriculture, ICAR - Indian Agricultural Research Institute, Pusa, New Delhi, India
MANOJ SHRIVASTAVA Division of Environmental Sciences, Centre for Environmental Science and Climate Resilient Agriculture, ICAR - Indian Agricultural Research Institute, Pusa, New Delhi, India
N GUPTA Division of Environmental Sciences, Centre for Environmental Science and Climate Resilient Agriculture, ICAR - Indian Agricultural Research Institute, Pusa, New Delhi, India
SANDEEP KUMAR Division of Environmental Sciences, Centre for Environmental Science and Climate Resilient Agriculture, ICAR - Indian Agricultural Research Institute, Pusa, New Delhi, India
LAL CHAND MALAV ICAR-National Bureau of Soil Survey and Land Use Planning, Nagpur, India
MAHAVEER NOGIYA Division of Soil Science and Agricultural Chemistry, ICAR - Indian Agricultural Research Institute, Pusa, New Delhi, India
S K DUBEY Indian Institute of Soil and Water Conservation, Regional Centre, Agra, India

https://doi.org/10.56093/ijas.v90i10.107985

Keywords:

Chlorella minutissima, Phycoremediation, Pollution, Sewage wastewater

Abstract

Phycoremediation is a cost effective, environmentally sustainable, safe and alternative technology for remediation of wastewater. The present work was aimed to evaluate the role of inoculated microalgae (Chlorella minutissima) in phycoremediation of sewage wastewater. The selected microalgae removed 94.4% TDS, 88.9% of NO3 -N, 66.3% potassium, 67.4% phosphorus, 48.2% NH4 +, 93% (Biological Oxygen Demand) BOD5 and 80.5% (Chemical Oxygen Demand) COD. The wastewater obtained after phycoremediation have safe limit of nutrients to be used as irrigation water in agricultural fields. The results of this study suggested that growing algae in nutrient-rich sewage wastewater offers a new opportunity to bio-remediate pollution load of wastewater and use it for irrigation purposes.

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