Department of Environmental Science,

Policy and Management

Environmental Geochemistry @Cal

Group Members

Laura Nielsen Lammers, PhD

née Laura C. Nielsen, Principal Investigator


Assistant Professor, Department of Environmental Science, Policy, and Management, University of California, Berkeley

Faculty Scientist, Lawrence Berkeley National Laboratory


Prof. Lammers is an Assistant Professor in the Department of Environmental Science, Policy and Management at UC Berkeley and a Faculty Scientist at the Lawrence Berkeley Lab specializing in environmental geochemistry. Her group studies the natural chemical processes that regulate the cycling of critical elements in the environment, regulated by mineral-aqueous interfacial reactions. The Lammers lab seeks to develop a mechanistic understanding of carbonate and phosphate mineralization and selective element separation to inspire and improve approaches for carbon sequestration, environmental remediation, and critical resource recovery.  She is the recipient of a Department of Energy Early Career Award (2020), a LBNL Women@the Lab Award (2020), as well as the Mineralogical Society of America Award (2018).


ESPM Profile


Jennifer Mills (2016-current)

PhD Student

Department of Environmental Science, Policy and Management


Research interests

I am a geochemist interested in a wide range of issues related to energy and climate. My current research focuses on surface chemistry, carbonates, and crystal growth - I'm interested in understanding how the molecular-scale interactions that occur at mineral-fluid interfaces control macro-scale reaction rates and geochemical cycling. I'm currently working on two main projects that span the basic science - applied science continuum. In the first, I'm using a combination of laboratory crystal growth experiments and simulation techniques to probe how trace element incorporation and changes in ionic strength influence calcium carbonate growth rates and calcium isotope fractionation. In the second, I'm using reactive transport modelling to model carbonate precipitation/dissolution in arid soils, with the aim of quantifying the soil inorganic carbon budget and its response to both short-term (e.g. utility-scale solar installation) and long-term (e.g. climate change) perturbations.


ESPM Profile


Luis Anaya (2017-current)

PhD Student

Department of Civil and Environmental Engineering


Research interests

Luis is working to optimize nutrient phosphorus recovery from wastewater by developing a mechanistic understanding of struvite (magnesium ammonium phosphate) nucleation and growth. He completed an internship with the San Francisco Public Utility Commission to characterize and optimize P release for recovery from wastewater.


Luis Dominguez (2019-current)

Research Assistant

Ayumi Koishi (2021-current)

Postdoctoral Researcher

Energy Geoscience Division, Lawrence Berkeley National Lab


Research interests

We are excited to welcome Ayumi to the group! She brings deep expertise in nonclassical crystal growth pathways, advanced X-Ray scattering techniques, and computational chemistry.


Group Alumni

Elliot Chang (PhD student 2016-2021)

Postdoctoral Researcher, Lawrence Livermore National Laboratory


Congratulations to Elliot for completing his dissertation and securing an exciting postdoctoral research fellowship at LLNL!

Nithya Subramanian (postdoctoral researcher 2018-2020)

Marie Curie Fellow, TU Delft, Netherlands


Congratulations to Nithya for transitioning to a prestigious Marie Curie postdoctoral fellowship in the Netherlands!


Elizabeth Mitnick (co-advised PhD student 2015-2019)

Data Scientist at Splunk



Gregory Maurer (co-advised postdoctoral researcher 2016-2019)

Research Scientist, Jornada Rangeland Research Program, New Mexico State University


Holly Barnhart (undergraduate researcher 2016-2019)

Graduate student, Adkins group, UCLA


Lena Kallweit (undergraduate researcher 2017-2018)

Staff Research Associate, UCSF


Karol Kulasinski (postdoctoral researcher 2016-2017)

Senior Data Scientist at Yieldbird


Kathrin Schilling (postdoctoral researcher 2015-2016)

Associate Research Scientist, Lamont Doherty Earth Observatory, Columbia University


Kedarnath Kollouri (postdoctoral researcher 2014-2015)

Applied Scientist, Amazon