Using nature to solve problems.

Our short story.

In 2014, Gross-Wen Technologies was founded by Dr. Martin Gross and Dr. Zhiyou Wen at Iowa State University while developing GWT’s sustainable RAB™ system to help municipal and industrial clients effectively treat wastewater in more economical and reliable ways.

Since then, GWT has grown into a trusted source for environmentally-friendly wastewater treatment.

Our mission has always been simple.

Since its formation, the mission has been to provide a sustainable algae-based wastewater treatment that is effective, reliable, and economical.

We have reinvented the way pollutants are viewed through our innovative, patented process of recovering nutrients from wastewater with algae and then recycling those nutrient-rich algae into slow-releasing algal-based fertilizer – an additional revenue stream!

Our Team

Dr. Martin Gross

Founder, President, and CEO

Paul Juffer

Chief Financial Officer

Max Gangestad

Chief Operating Officer

Zhiyou Wen

Founder & Technical Expert

Phil Gates

Dir. of Bus. Development

Jon Kallen

Dir. of Special Projects

Paul Simpson

Dir. of Operations

Xuefei Zhao

Technical Expert

Drew Greene

Lab Manager

Luke Anderson

Wastewater Operations Manager

Michael Gross

R&D Operations Manager

Jens Dancer

Process Engineer

Abigail Schulte

Laboratory Technician

Mark Rogers

Operations Technician

Cody Clauer

Operations Technician

Graham Bradbury

Operations Technician

Lisa Galetich

HR Manager

Jade Vuong

Financial Analyst

Kyle Woiwood

CPA, Tax Manager

Jenna Corrin

Senior Accountant

GW Nutrition Team

Anita Norian


David Phillips

Vice President and Co-Founder

Laura Wonderling

Research and Development

We don’t just think green, we grow it.