Carnegie Mellon University

Kelvin Gregory

Kelvin Gregory

Professor & Executive Director of Undergraduate and Graduate Programs, Civil and Environmental Engineering

Civil & Environmental Engineering
Carnegie Mellon University
Pittsburgh, PA 15213-3890


Kelvin Gregory is a professor in the Department of Civil and Environmental Engineering. His research interests lie in environmental biotechnology and biogeochemistry with a focus on the fundamental interactions between microorganisms and geochemistry, which influence the fate of environmental pollution.The goal of his research is to provide insight into the underlying science of enhanced engineering solutions for environmental challenges.

The research in Gregory’s lab is primarily experimental and applications-oriented as they apply to development of environmental technology. Current research projects include microbial ecology of agricultural plant tissues, water and sanitation in developing communities, and produced water from oil and natural gas development and CO2 sequestration.

In conjunction with the Center for Environmental Implications of Nanotechnology (CEINT) at Carnegie Mellon University, Gregory’s research group explores the interactions between bacteria and nanoparticles for an enhanced understanding of the fate, transport, and toxicity of nanomaterials.

He is the Faculty Advisor for the CMU Chapter of Engineers Without Borders and is interested in sustainable and appropriate water and energy technology for developing communities.

Areas of Interest

  • Environmental microbiology and biotechnology
  • Benthic and microbial fuel-cells for remote and decentralized power generation
  • Environmental biogeochemistry, electrode-based remediation of contaminated subsurfaces
  • Bacteriology and microbial ecology of engineered systems
  • Sustainable and appropriate technology in developing communities


PhD 2002 - The University of Iowa


Research Group: CREST


E McGivney, L Han, A Avellan, J VanBriesen, KB Gregory (2017) “Disruption of Autolysis in Bacillus Subtilis Using TiO2 Nanoparticles,” Scientific Reports, 7, 44308.

JD Moore, A Avellan, CW Noack, Y Guo, GV Lowry, KB Gregory (2017) “Time-Dependent Bacterial Transcriptional Response to CuO Nanoparticles Differs from that of Cu2+ and Provides Insights into CuO Nanoparticle Toxicity Mechanisms,” Environmental Science: Nano, 4 (12), 2321-2335.

ER Dauson, KB Gregory, IJ Oppenheim, KN Dahl (2017) “Human Blood Cell Separation Using Bulk Acoustic Waves in a Machined PMMA Microchannel,” Ultrasonics Symposium (IUS), 2017 IEEE International, 1-4.

K Gregory and AM Mohan  (2015) “Current Perspective on Produced Water Management Challenges During Hydraulic Fracturing for Oil and Gas Recovery,” Environmental Chemistry, 12 (3), 261-266.

L Han, KG Karthikeyan, KB Gregory (2015)  “Energy Consumption and Recovery in Capacitive Deionization Using Nanoporous Activated Carbon Electrodes,” Journal of The Electrochemical Society, 162 (12), E282-E288.

AM Mohan, KJ Bibby, D Lipus, RW Hammack, KB GregorY (2014) “The Functional Potential of Microbial Communities in Hydraulic Fracturing Source Water and Produced Water from Natural Gas Extraction Characterized by Metagenomic Sequencing,” PloS one, 9 (10), e107682

Recent Awards 

  • 2012: awarded 2012 Best Feature Article in Environmental Science & Technology Journal with Greg Lowry.


  • 12-100 Exploring CEE
  • 12-355 Fluid Mechanics
  • 12-356 Fluid Mechanics Lab