Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal International Journal of Renewable Energy Development
H. Hadiyanto
Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Indonesia 50275
Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Bi-directional Modulation of Electron Transfer and Capacitive Behavior in Sediment Microbial Fuel Cells by Hydrochar and Acetate Marcelinus Christwardana; Yayuk Astuti; H. Hadiyanto; Achmad Yanuar Maulana; K. Khoirunnisa; Dilla Dayanti; Keisya Natania Nur A'intan
International Journal of Renewable Energy Development Accepted Articles
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.62325

Abstract

Marine sediment microbial fuel cells (MS-MFCs) provide a sustainable means of harvesting energy from benthic environments, yet their performance is often constrained by slow electron transfer and unstable power generation. To address these limitations, this study investigates the coupled kinetic and capacitive enhancement of MS-MFCs through co-modification with biomass-derived hydrochar (HC) and acetate as complementary electron-transfer and metabolic modulators. Four sediment compositions (0, 5, 10, and 15% v/v HC) were operated over 30 days under a 1 kΩ external load, with acetate introduced on Day 21. The apparent electron-transfer rate constant (Kₛ) increased from 1.77 s⁻¹ in the unamended control to 3.19 s⁻¹ and 3.49 s⁻¹ in the 10% and 15% HC systems, respectively. Maximum power densities reached 21.8–23.1 mW m⁻², approximately three orders of magnitude higher than the control. Mechanistically, HC provided a conductive and pseudocapacitive scaffold that facilitated microbe–electrode coupling, while acetate served as a readily metabolizable carbon source to accelerate microbial activity. Together, these effects established a synergistic link between kinetic enhancement and capacitive charge buffering, offering new insight into the design of robust, self-sustaining MS-MFCs for in-situ coastal energy recovery.
Co-Authors Achmad Yanuar Maulana Dilla Dayanti K. Khoirunnisa Keisya Natania Nur A'intan Marcelinus Christwardana Yayuk Astuti