About Us

We’re redefining lithium refining with cleaner chemistry, smarter design, and the industrial know-how to make sustainable production truly competitive.

Built on Experience. Driven by Innovation.

At Lithium Ark, we combine decades of hands-on lithium expertise with breakthrough clean-tech innovation to redefine how lithium is refined. Our team develops solutions that enhance both environmental performance and economic viability. Through patented circular chemistry and rigorous real-world testing, we’ve created a process that significantly reduces CO₂ emissions, initial investment and operating costs — demonstrating that sustainability and competitiveness can advance together.

Our Origin

Lithium Ark was founded on decades of hands-on experience in lithium processing and environmental management. Through Process & Environmental Consultancy (PEC) (https://www.lithium-experts.com) our founders worked with nearly every major project in the Lithium Triangle and worldwide, gaining a deep understanding of the industry’s technical and operational challenges.

That experience converged with a clear realization: the lithium refining industry was relying on processes that were both environmentally damaging and economically inefficient: costly to operate, dependent on high water and energy use, and responsible for significant CO₂ emissions.

Today, Lithium Ark holds patents on a revolutionary refining process built for a cleaner, more competitive lithium future.

Our Mission

Revolutionize the world of lithium refining by substantially reducing processing cost and environmental footprint

Through cutting-edge research, strategic partnerships, and unwavering dedication to excellence, we empower businesses and communities to achieve their sustainability goals while maintaining competitive advantage in an evolving market.

The Lithium Ark Difference

Experience, innovation, and sustainability come together in a patented refining approach designed for the realities of today’s lithium industry and the demands of tomorrow’s energy transition.

Deep Industry Expertise

More than 25 years of hands-on experience across lithium processing, environmental management, and project development—grounded in real work with major operations throughout the Lithium Triangle and worldwide.

Patented refining process

A patented refining process born from decades of field insight, rigorous R&D, and a commitment to creating cleaner, more efficient, and more competitive lithium solutions to support the rapid growth in lithium demand driven by the energy transition.

Commitment to Sustainability

Driving meaningful environmental improvement through cleaner refining chemistry, reduced resource use, and processes designed to lower emissions and minimize impact across the entire lithium value chain.

Our Team

Founders Backed by Unmatched Experience Within the Lithium Industry

Peter Ehren
Co–Founder & CTO
Macarena González

Co-Founder & CEO

Leadership Team with Deep Lithium, Process and International Expertise

Mark Brouwer

VP of Engineering

25+ years of hands-on experience designing, building, and streamlining projects worldwide— from lab to full industrial scale.. MSc. in Chemical Engineering from the Technical University (TU) Eindhoven, The Netherlands.

Rodrigo Rivas

COO

20+ years of experience in leading operations, processes, projects, and quality of lithium chemical plants, and in-depth knowledge of lithium carbonate and hydroxide processes. Metallurgical Engineer from the University of Concepción, Chile.

Robert Roeloffs
CFO

25+ years in Marketing, Sales & Business Management. MBA. BS Industrial Engineering from California Polytechnic State University, United States.

Luis Santillana

VP Business Development

20+ years of experience leading financial strategy, funding, and operations for mining and clean energy ventures across Latin America and Europe. MBA from IESE Business School, Spain, Management Accountant from CIMA UK and Industrial Engineer from Universidad de Lima, Peru.