About

Our expertise spans the full value chain, from material science through end-of-life recovery, so we can advise you wherever your biggest sustainability challenges sit. Our approach is data-driven, pragmatic, and relentlessly focused on measurable results.

Sustainability is our passion.
Recycling is our expertise.

With over two centuries of combined expertise, Green Group Consulting is reshaping the sustainability ecosystem. Our expertise spans circular economy value chain, translating technical complexity into actionable, practical strategies. From public agencies to private organizations, we help stakeholders unlock solutions, navigate regulations, and build strategies that deliver both environmental impact and economic value.

We bridge the gap between strategic vision and operational reality, giving you counsel grounded in how the industry actually works. Whether you’re advancing circular economy initiatives, strengthening materials infrastructure, or solving supply chain challenges, we help you move from planning to a clear path forward.

Every client works directly with an industry leading expert in their field. We combine boutique agility with heavyweight expertise, giving you both strategic precision and expert partnership at any scale.

David Nix | President, Founder

David brings over three decades of experience in the plastics industry with a focus on polypropylene and recycling. His career spans leadership roles at global polyolefin producers like LyondellBasell and Braskem. After launching his own recycling business and advising private companies, David returned to Braskem as North America’s Sustainability and Recycling Leader.

Today, through Green Group Consulting, David draws on his deep technical expertise and industry experience to guide clients across the plastics value chain. He has led capital projects exceeding $1 billion and is recognized as one of the world’s foremost experts in polyolefin resin design and recycling technologies.

Harrison Nix | Vice President

Harrison brings a rare combination of operational and analytical depth. He led operations at a post-consumer polypropylene recycling facility. His hands-on experience running a working recycling operation grounds everything he does in the realities of the industry. That operational foundation, paired with a background in data analysis, lets him translate technical complexity into decisions clients can act on.

Today, Harrison leads Green Group’s regulatory compliance team, guiding clients through Extended Producer Responsibility and the fast-evolving landscape of state and federal sustainability regulation. He also builds the data and modeling work behind the firm’s exposure and risk analysis, using programming and analytics to help clients understand their regulatory liability and plan for what’s ahead.

John Caturano | Managing Director

With over 30 years of experience in packaging, recycling, and sustainable sourcing—including leadership roles at Nestlé and Keurig Dr Pepper—John brings deep expertise in packaging policy, technical packaging across formats, and sustainability frameworks such as Deposit Return Systems (DRS) and Extended Producer Responsibility (EPR).