, Volume 32, Issue 4, pp 556–563 | Cite as

Microalgal biomass generation by phycoremediation of sewage water: an integrated approach for production of antioxidant and value added products

  • Pampi Sarmah
  • Suman Das
  • Himangshu Sharma
  • Jayashree RoutEmail author
Research Articles


Sewage water from an urban township in India has been used as a growth media for cultivation of a green alga Chlorella ellipsoidea in relation to phycoremediation and integrated approach for production of antioxidant and value added products. The concentration level of nitrate, phosphate, ammonia and total dissolved solid got significantly reduced in the sewage water media at post-stationary phase. An increased level of dissolved oxygen was observed on 30th day of incubation. The alga was efficient in the uptake of nutrients from sewage water. Most notably, complete removal of total dissolved solid was observed. Phaeopigment and physiological stress indices were virtually unaltered in most cases indicating facile adaptability. The stationary phase of the algal species was stable for 40 days as against only 22 days in BG11(N+) medium. Dry cell weight of the sewage water grown alga has been found to be about five times higher than that grown in BG11(N+) medium. The biomass accrued from sewage water as growth medium showed around 25% carbohydrate, 35% lipid and 56% protein and relatively higher amount of enzymatic and non-enzymatic antioxidants.


Chlorella ellipsoidea Sewage water Nutrient uptake Phycoremediation Phaeopigment 



Dissolved oxygen


Biological oxygen demand


Chemical oxygen demand


Total dissolved solid


Suspended solid


Dry cell weight



The authors acknowledges the Department of Science and Technology (DST/IS-STAC/CO2-SR-164/13 (G), Government of India, New Delhi for support. PS acknowledges the University Grants Commission, New Delhi for fellowship.


This research was partially supported by the project “Evaluation of indigenous freshwater algal species from Southern Assam (North East India) for carbon sequestration” from Department of Science and Technology (DST/IS-STAC/CO2-SR-164/13 (G), Government of India, New Delhi.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Human and animal rights

There is no research involving human participants and or animals.


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Copyright information

© Society for Plant Research 2019

Authors and Affiliations

  • Pampi Sarmah
    • 1
  • Suman Das
    • 1
  • Himangshu Sharma
    • 1
  • Jayashree Rout
    • 1
    Email author
  1. 1.Department of Ecology and Environmental ScienceAssam UniversitySilcharIndia

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