Cassava Waste Pulp Valorization for Biohydrogen Production: A Sustainable Approach to Advancing Circular Economy

Bonn Jeno Rojo (), Zarah Pagaran (), Ma. Carmela Derecho (), Mary Joy Dedi (), Alexander Ido () and Renato Arazo ()
Additional contact information
Bonn Jeno Rojo: University of Science and Technology of Southern Philippines
Zarah Pagaran: University of Science and Technology of Southern Philippines
Ma. Carmela Derecho: University of Science and Technology of Southern Philippines
Mary Joy Dedi: University of Science and Technology of Southern Philippines
Alexander Ido: University of Science and Technology of Southern Philippines
Renato Arazo: University of Science and Technology of Southern Philippines

Circular Economy and Sustainability, 2025, vol. 5, issue 2, 1003-1022

Abstract: Abstract In response to the escalating issue of atmospheric emissions from fossil fuels, harnessing biofuel-based renewable energy is considered a highly promising energy option. Biohydrogen, being carbon-free and non-polluting, has gained significant attention. This study investigated the potential of cassava waste pulp (CWP) as a substrate for biohydrogen production through photofermentation, using Rhodopseudomonas palustris as the inoculum. An acid-hydrolyzed substrate with a sugar concentration of 10.2°Brix was produced via 1% hydrochloric acid hydrolysis pretreatment and used in the experiment. The optimum values for the operating variables of hydraulic retention time (HRT) and inoculation volume ratio (IVR) were assessed under controlled conditions, with a constant pH of 8.0, light intensity of 720 lx (120 W), and an ambient room temperature of 25 ± 3 °C. The results showed that the highest biogas yield was achieved with a 60 h HRT and a 30% IVR. The central composite design of the response surface methodology revealed that the model was highly significant, with a p-value of

Keywords: Acid hydrolysis; Biohydrogen; Cassava waste pulps; Rhodopseudomonas palustris; Response surface methodology (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://link.springer.com/10.1007/s43615-024-00431-0 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:circec:v:5:y:2025:i:2:d:10.1007_s43615-024-00431-0

Ordering information: This journal article can be ordered from
https://www.springer.com/journal/43615

DOI: 10.1007/s43615-024-00431-0

Access Statistics for this article

More articles in Circular Economy and Sustainability from Springer
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().