Department of Chemical and Metallurgical Engineering

Hydrometallurgy and Corrosion (Hydromet)

The research group Hydromet, led by Prof. Mari Lundström, applies hydrometallurgical and electrochemical means for the recovery of metals and precious materials, development of electrolysis processes, study of corrosion properties and development of new materials from secondary raw materials.
Precious metals in crushed batteries being dissolved in a test tube. Photo: Glen Forde/Aalto Energy Platform

Our research areas:

  1. Hydrometallurgical processing of primary and secondary raw materials - from fundamental phenomena to process design with environmental impact evaluation

  2. Electrochemistry - electrochemical metal recovery, characterization, as well as corrosion processes

  3. Utilizing secondary raw materials for the development of new processes and materials in circular economy of metals

The research group is dedicated to enabling sustainable living for future generations. As a result of the increased utilisation of electrification, automation, renewable energy solutions and the continued rise in living standards, numerous challenges related to the primary production and circular economy of metals have appeared.

By a combination of the theoretical understanding of hydrometallurgy, electrochemistry, corrosion prevention, process development, process modelling, LCA analysis and state of the art analysis techniques, our researchers are at the forefront of sustainable industrial-scale process development.

Furthermore, Hydromet’s extensive collaboration with a wide variety of industrial and academic stakeholders enables the pioneering of new innovative solutions for these crucial global challenges.

Solar cell component on wood bark on ice crystals
Nordic photovoltaics using plant-based materials

The demand for metals and other raw materials is expected to rise drastically in part as the world transitions towards more sustainable energy solutions. The use of renewable energy sources requires lithium ion batteries, photovoltaic cells and wind energy – complex products that are also highly metal intensive. Our research group aims to be at the forefront of the metals circular economy through development of efficient primary processes and by improving the recycling of end-of-life materials.

Hydromet Projects

The ongoing and past projects from Hydromet group can be found here.

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Future lithium ion battery life cycle

Hydromet Facilities

Find an introduction to our facilities here.

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Mari Lundström

Latest Hydromet news:

Find here our latest activities.

Professor Mari Lundström with Tesla / Photo: Pertti Kauranen
Press releases Published:

Prof. Mari Lundström featured in Millenium Talks

Host Henkka Hyppönen and Assistant Professor Mari Lundström discuss possibilities and challenges in recycling of batteries at the laboratories of Hydrometallurgy and Corrosion.
Mari Lundström
Cooperation Published:

Hydromet group at BATCircle Seminar in Pori 3.9.2019

The first BATCircle Seminar was held in University Consortium of Pori. Prof. Lundström and the group's researchers workingwith LIB recycling, process design and primary processing attended the seminar.
BatteRIes Europe
Cooperation Published:

Hydromet at BatteRIes Europe in Brussels 24.6.2019

ETIP BatteRIes Europe officially launched at Brussels on 24.6.2019. The platform brings together all relevant stakeholders in the European batteries research and innovation ecosystem in order to develop and support a competitive battery value chain in Europe.
BATCircle logo
Research & Art Published:

BATCircle featured in Materia magazine

Aalto led Finland- based Circular Ecosystem of Battery Metals was featured in the newest Materia Magazine (2/2019 May)


Battery recycling_photo Valeria Azovskaya

BATCircle – Circular ecosystem of battery metals

Learn more about responsible sourcing, refining and production of active battery materials as well as efficient recycling of end-of-life batteries needed for ongoing energy and mobility transitions.


Latest publications:

Selective Sulfation Roasting for Cobalt and Lithium Extraction from Industrial LCO-Rich Spent Black Mass

Jayasree Biswas, Sofia Ulmala, Xingbang Wan, Jere Partinen, Mari Lundström, Ari Jokilaakso 2023 Metals

Recent developments of electrodeposition-redox replacement in metal recovery and functional materials: A review

Linfan Cui, Kirsi Yliniemi, Jaana Vapaavuori, Mari Lundström 2023 Chemical Engineering Journal

Recovery of Gold as Nanoparticles from Gold-Poor Au-Cu-Cl Solutions

Reima Herrala, Zulin Wang, Jaana Vapaavuori, Mari Lundström, Kirsi Yliniemi 2023 Journal of Physical Chemistry C

Overlooked residue of Li-ion battery recycling waste as high-value bifunctional oxygen electrocatalyst for Zn-air batteries

Kerli Liivand, Jani Sainio, Benjamin P. Wilson, Ivar Kruusenberg, Mari Lundström 2023 Applied Catalysis B: Environmental

Depolymerization and leachability of spent videotape for cobalt recovery

Iryna Makarava, Mohammadamin Esmaeili, Simo Pöntynen, Vitalii Kavun, Mohammad Reza Bilesan, Mari Lundström, Eveliina Repo 2023 Minerals Engineering

Numerical Simulation and Experimental Study of Shear-Enhanced Goethite Process for Iron Removal

Tianxiang Nan, Jianguang Yang, Weizhi Zeng, Qiang Zhu, Shiyang Tang, Chaobo Tang, Mari Lundström 2023 JOM

Impact of additive manufacturing on titanium supply chain: Case of titanium alloys in automotive and aerospace industries

Patricia Nyamekye, Saeed Rahimpour Golroudbary, Heidi Piili, Andrzej Kraslawski, Pasi Luukka 2023 Advances in Industrial and Manufacturing Engineering

The impact of chlorides on NMC leaching in hydrometallurgical battery recycling

Jere Partinen, Petteri Halli, Benjamin P. Wilson, Mari Lundström 2023 Minerals Engineering

Assessment of environmental sustainability of nickel required for mobility transition

Saeed Rahimpour Golroudbary, Andrzej Kraslawski, Benjamin P. Wilson, Mari Lundström 2023 Frontiers in Chemical Engineering

Processing of a Zinc Leach Residue by a Non-Fossil Reductant

Minna Rämä, Lassi Klemettinen, Marja Rinne, Pekka Taskinen, Radosław Markus Michallik, Justin Salminen, Ari Jokilaakso 2023 ACS Omega
More information on our research in the Research database.
Research database
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