Synergistic medium-chain-length polyhydroxyalkanoate-hydrochar composite anodes for stable, high-power microbial fuel cells with customized biodegradation behavior.

Abdul Azeez Olayiwola Sirajudeen, Shaliza Ibrahim, Mohamad Suffian Mohamad Annuar, Kamil Kayode Katibi, Muhammad Fikri Zulkornain, Mohd Arif Dar, Siti Rohana Majid, Temitope Theophilus Dele-Afolabi

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Article in Bioprocess and biosystems engineering, 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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5 · Who and what money

Authors and funding

8 authors.

Abdul Azeez Olayiwola SirajudeenInstitute of Sustainable Energy, Universiti Tenaga Nasional, 43000, Kajang, Selangor, Malaysia. sirajudeen@uniten.edu.my.

Shaliza IbrahimInstitute of Sustainable Energy, Universiti Tenaga Nasional, 43000, Kajang, Selangor, Malaysia.

Mohamad Suffian Mohamad AnnuarInstitute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia. suffian_annuar@um.edu.my.

Kamil Kayode KatibiDepartment of Mechanical Engineering, Faculty of Engineering, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.

Muhammad Fikri ZulkornainInstitute of Sustainable Energy, Universiti Tenaga Nasional, 43000, Kajang, Selangor, Malaysia.

Mohd Arif DarDepartment of Physics, Centre for Ionics University Malaya, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.

Siti Rohana MajidDepartment of Physics, Centre for Ionics University Malaya, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.

Temitope Theophilus Dele-AfolabiSchool of Mechanical Engineering, College of Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia.

Funding

AAIBE Chair for Renewable Energy grant 202407KETTHA

6 · The paper itself

Abstract

The advancement of sustainable bioelectrochemical systems requires anode materials that simultaneously deliver high power output, structural robustness, and controlled biodegradability. This study develops a new class of composite bioanodes by integrating biosynthesized medium-chain-length polyhydroxyalkanoates (mcl-PHA) with sugarcane bagasse-derived hydrochars possessing tailored surface chemistries namely raw (PHA-R), phosphate (PHA-P), and sulfonated (PHA-S), and compares their performance to a carbon-nanotube equivalent (PHA-C). The biocompatible mcl-PHA matrix acts as a multifunctional binder that improves electrode cohesion and ion transport, while hydrochar porosity and functional groups regulate interfacial charge transfer and microbial adhesion. Polarization analysis shows that the PHA-R composite achieves an average open-circuit voltage (OCV) of 938 ± 4 mV with a maximum power density of 1.5 ± 0.1 W/m

Indexed as

Bioelectric Energy SourcesCellulosePolyhydroxyalkanoatesElectrodesbagasseCellulosePolyhydroxyalkanoatesBiodegradationHydrocharMedium-chain-length polyhydroxyalkanoatesMicrobial fuel cellSustainable compositeWaste valorization

Identifiers

PMID42301292

DOI10.1007/s12010-025-05436-5

What OpenQuestion holds

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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.