ABSTRACT

Dumping of wastewater often results in high nutrient stocking into aquatic environments, which may be dominant to favorable conditions for unwanted phytoplankton blooms. Microalgae are well-organized in removing nitrogen, phosphorus, and heavy metals from wastewater under controlled environments. Improbabilitysubstantial nutrients in the wastewater stream can be top to cultivate microalgae for biofuel production, the nutrients also be removed, therefore meaningfully reducing the risk of damaging phytoplankton overgrowth. Microalgae also have the capability to fix the excess Carbon dioxide (CO2) present in the environment and release the oxygen (O2) and decrease the problem of Global warming.In conclusion, novel algae cultivation technologies effective for biofuel production and nutrient recovery in contaminated water bodies are deliberated. On this review paper summarizes the key nutrient components of wastewater streams, the mechanisms of algal nutrient uptake, nutrient removal performance of various type of microalgae when cultured in wastewater, and current microalgae production systems. Still the technology existing (photobioreactors, harvesting, downstream) must be improved to reduce the land requirement and the hydraulic retention time, but the current technology is ready to be demonstrated at large scale, so that the first initial facilities based on this technology have been recently developed. Key wards: Microalgae, Wastewater, Nutrient recovery, CO2, Sunlight, harvesting
Publication date: 01/04/21

https://ijbpas.com/pdf/2021/April/MS_IJBPAS_2021_APRIL_SPCL_1002.pdf

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https://doi.org/10.31032/IJBPAS/2021/10.4.1002