Rate My Professor James Byrne

Dr James Byrne is an Associate Professor in the School of Earth Sciences at the University of Bristol, where he holds an MPhys and PhD. His multidisciplinary expertise encompasses physics, geomicrobiology, and environmental mineralogy. He joined the university as a lecturer in April 2020 alongside Dr Casey Bryce and has advanced to his current position. Byrne is also a UKRI Future Leaders Fellow (Round 5, NERC-funded), leading the project 'Iron biogeobatteries are sustainable electron sources and sinks in the environment,' which runs through at least 2028 with a renewal phase from 2026 to 2028. He is a member of the Cabot Institute for the Environment, contributing to themes in environmental change, low carbon energy, natural hazards, water research, and more.

Byrne's research explores the links between magnetism and microbial processes in natural environments, focusing on iron mineral formation and transformation, environmental magnetism, electron exchange between bacteria and solid-phase iron minerals, and contaminant remediation via redox-active mixed-valent minerals. Additional interests include astrobiology, early Earth conditions, and bioinspired materials for environmental remediation and targeted medical therapies. He employs advanced analytical techniques such as 57Fe Mössbauer spectroscopy, scanning and transmission electron microscopy (including cryogenic imaging), spectral fitting methods, and programming in Matlab, R, Arduino, Javascript, and Python. His work has significant impact on understanding biogeochemical iron cycling, with applications to climate-driven processes like permafrost thaw and sustainable water treatment technologies. Byrne has produced 76 research outputs, including 74 journal articles, one book chapter, and one review. Highly cited publications include 'An evolving view on biogeochemical cycling of iron' (Nature Reviews Microbiology, 2021; 819 citations), 'Magnetite and green rust: synthesis, properties, and environmental applications of mixed-valent iron minerals' (Chemical Reviews, 2018; 535 citations), 'Redox cycling of Fe(II) and Fe(III) in magnetite by Fe-metabolizing bacteria' (Science, 2015; 394 citations), 'Microbial anaerobic Fe(II) oxidation – ecology, mechanisms and environmental implications' (Environmental Microbiology, 2018; 323 citations), and 'Iron mineral dissolution releases iron and associated organic carbon during permafrost thaw' (Nature Communications, 2020; 281 citations). Recent works address mine water treatment and cryptic iron cycling in stratified lakes.