Thermophilic Biohydrogen Production Utilizing Green-Synthesized Hydroxyapatite (HAP): Insights into Substrate Optimization and Biogranule Formation.

Shishita Zahan Zisha, Hasfalina Che Man, Rozita Omar, Suraya Abdul Rashid, Tan Jian Ping, Shareena Fairuz Abdul Manaf, Tabassum Mumtaz, Nur Syakina Jamali

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Article in Applied biochemistry and biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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Authors and funding

8 authors.

Shishita Zahan ZishaDepartment of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Selangor, 43400, Malaysia.

Hasfalina Che ManDepartment of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Selangor, 43400, Malaysia.

Rozita OmarDepartment of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Selangor, 43400, Malaysia.

Suraya Abdul RashidNanomaterials Processing and Technology Laboratory (NPTL), Institute of Nanoscience and Nanotechnology, Universiti Putra Malaysia, 43400, Selangor, Malaysia.

Tan Jian PingSchool of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, 43900, Bandar Sunsuria, Sepang, Malaysia.

Shareena Fairuz Abdul ManafSchool of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia.

Tabassum MumtazInstitute of Food and Radiation Biology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh.

Nur Syakina JamaliDepartment of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Selangor, 43400, Malaysia. syakina@upm.edu.my.ORCID http://orcid.org/0000-0002-1756-6110

Funding

Ministry of Higher Education and Scientific Research FRGS/1/2023/TK08/UPM/02/3

6 · The paper itself

Abstract

This study presents an integrated approach for enhancing thermophilic biohydrogen production from palm oil mill effluent (POME) using eco-friendly hydroxyapatite (HAP) synthesized from waste eggshells. The synthesized HAP was applied as a bio-additive to stimulate microbial activity and facilitate cell immobilization. Batch fermentation was performed under thermophilic conditions (60 °C) using a mixed culture dominated by Thermoanaerobacterium thermosaccharolyticum, with varying POME concentrations (4-20 g/L) to determine the optimal substrate level. The maximum hydrogen yield (2.19 ± 0.43 mol H

Indexed as

BiofuelsDurapatiteGreen Chemistry TechnologyHydrogenThermoanaerobacteriumBioreactorsFermentationPalm OilBiofuelsDurapatiteHydrogenPalm OilBio granule formationBiohydrogenHydroxyapatiteOrganic loading ratePOMEThermophilic

Identifiers

PMID41264214

DOI10.1016/j.heliyon.2023.e20924

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.