Improved biohydrogen production via graphene oxide supported granular system based on algal hydrolyzate, secondary sewage sludge and bacterial consortia

Neha Srivastava, Rajeev Singh, Deepika Kushwaha, Jawahir A. Mokhtar, Turki S. Abujamel, Steve Harakeh, Shafiul Haque, Manish Srivastava*, P. K. Mishra, Vijai Kumar Gupta

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

Abstract

Biohydrogen production using renewable sources has been regarded as one of the most sustainable ways to develop low-cost and green production technology. In order to achieve this objective, herein biohydrogen production has been conducted using the combination of untreated secondary sewage sludge (Sss), algal biomass hydrolyzate (Abh), graphene oxide (GO) and bacterial consortia that forms a granular system. Thus, naturally formed granular system produced cumulative H2 of 1520 mL/L in 168 h with the maximum production rate of 13.4 mL/L/h in 96 h at initial pH 7.0, and optimum temperature of 37 °C. It is noticed that the combination of Abh, Sss and GO governed medium showed 42.05 % higher cumulative H2 production along with 22.71 % higher production rate as compared to Abh and Sss based H2 production medium. The strategy presented herein may find potential applications for the low-cost biohydrogen production using waste biomasses including Sss and Abh.

Original languageEnglish
Pages (from-to)41-45
Number of pages5
JournalJournal of Biotechnology
Volume358
Early online date5 Sep 2022
DOIs
Publication statusPrint publication - 10 Nov 2022

Bibliographical note

Publisher Copyright: © 2022 Elsevier B.V.

Keywords

  • Algal biomass hydrolysate
  • Biohydrogen
  • Fermentative cultures
  • Granule system
  • Graphene oxide
  • Sewage sludge

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