Technological advancements in valorisation of industrial effluents employing hydrothermal liquefaction of biomass : Strategic innovations, barriers and perspectives

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

11 Scopus Citations
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Author(s)

  • Prangya Ranjan Rout
  • Mukesh Goel
  • Daya Shankar Pandey
  • Caitlin Briggs
  • Venkatesa Prabhu Sundramurthy
  • Nirmalya Halder
  • Anee Mohanty
  • Sanjay Mukherjee

Detail(s)

Original languageEnglish
Article number120667
Journal / PublicationEnvironmental Pollution
Volume316
Issue numberPart 2
Online published14 Nov 2022
Publication statusPublished - 1 Jan 2023
Externally publishedYes

Abstract

Hydrothermal liquefaction (HTL) is identified as a promising thermochemical technique to recover biofuels and bioenergy from waste biomass containing low energy and high moisture content. The wastewater generated during the HTL process (HTWW) are rich in nutrients and organics. The release of the nutrients and organics enriched HTWW would not only contaminate the water bodies but also lead to the loss of valued bioenergy sources, especially in the present time of the energy crisis. Thus, biotechnological as well as physicochemical treatment of HTWW for simultaneous extraction of valuable resources along with reduction in polluting substances has gained significant attention in recent times. Therefore, the treatment of wastewater generated during the HTL of biomass for reduced environmental emission and possible bioenergy recovery is highlighted in this paper. Various technologies for treatment and valorisation of HTWW are reviewed, including anaerobic digestion, microbial fuel cells (MFC), microbial electrolysis cell (MEC), and supercritical water gasification (SCWG). This review paper illustrates that the characteristics of biomass play a pivotal role in the selection process of appropriate technology for the treatment of HTWW. Several HTWW treatment technologies are weighed in terms of their benefits and drawbacks and are thoroughly examined. The integration of these technologies is also discussed. Overall, this study suggests that integrating different methods, techno-economic analysis, and nutrient recovery approaches would be advantageous to researchers in finding way for maximising HTWW valorisation along with reduced environmental pollution. © 2022 Elsevier Ltd.

Research Area(s)

  • Biomass, Hydrothermal liquefaction, Industrial rejects, Supercritical water gasification, Waste valorisation

Citation Format(s)

Technological advancements in valorisation of industrial effluents employing hydrothermal liquefaction of biomass: Strategic innovations, barriers and perspectives. / Rout, Prangya Ranjan; Goel, Mukesh; Pandey, Daya Shankar et al.
In: Environmental Pollution, Vol. 316, No. Part 2, 120667, 01.01.2023.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review