Recent Advancements in Microalgal Mediated Valorisation of Wastewater from Hydrothermal Liquefaction of Biomass

Prangya Ranjan Rout, Mukesh Goel, Anee Mohanty, Daya Shankar Pandey, Nirmalya Halder, Sanjay Mukherjee, Shashi Kant Bhatia, Naresh Kumar Sahoo, Sunita Varjani

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Hydrothermal liquefaction (HTL) is an evolving technology that can convert waste with high moisture and low energy content to electricity, heat, hydrogen and other synthetic fuels more efficiently. The lee side is that the HTL process produces enormous amounts of wastewaters (HTWW), having high organic and nutrient load. The discharge of the HTWW would contaminate the environment and result in the loss of valuable bioenergy sources. The valorisation of HTWW has drawn considerable interest. Therefore, this review highlights the valorisation of wastewater during the HTL of biomass. The review paper begins with the discussion of the role of microalgae in valorizing the HTWW. The survey illustrates that the selection of appropriate technology is dependent on biomass characteristics of the microalgae. Finally, potential research opportunities are recommended to improve the viability of the HTL wastewater valorisation for bioenergy production. Overall, this review concludes that combining various processes, such as microalgae-anaerobic digestion, and bio-electrochemical system - microalgae-anaerobic digestion would be beneficial in maximizing HTWW valorisation.

Original languageEnglish
Number of pages16
JournalBioenergy Research
Early online date25 Mar 2022
DOIs
Publication statusE-pub ahead of print - 25 Mar 2022

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