Our 2017 Speaker Staff Includes:

Meet our professionals

Dr. Palla Gnouyaro Assima

Universite de Sherbrooke

Dr. Palla Gnouyaro Assima is a researcher in hydrometallurgy at COREM. Palla previously held a postdoctoral position at the department of chemical engineering at Laval University, where he worked on hydrodynamics characterization of embedded reactors to provide optimization elements to oil and gas treatment on offshore platforms. He also held an industrial postdoctoral researcher position at Sherbrooke University acting as leader of the platform dedicated to raw materials preparation and optimization of carbon conversion to syngas through catalytic gasification and catalytic reforming.

Mike Bedley

APEX Power Services Corp.

Mike Bedley is a partner with APEX Power Services Corp. an affiliate of the American Power Exchange Inc. Mike has more than 35 years of experience in the energy industry, which includes engineering, operations and financial management positions with NextEra Energy Resources. Mike has also held positions in areas such as generation pricing, portfolio asset management and energy trading. His major responsibilities at APEX include assisting large industrial, financial institutions and independent and renewable power producers with energy issues. He holds a Bachelor of Science in mechanical engineering from the Georgia Institute of Technology and a Master of Business Administration with a concentration in finance.

Thierry Boveri

Public Resources Management Group, Inc.

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Marco Castaldi

Associate Professor
The City College of New York

Born in New York City, Marco Castaldi received his Bachelor of Science in chemical engineering (magna cum laude) from Manhattan College. He earned his Ph.D. in chemical engineering from UCLA and holds minors in advanced theoretical physics and astrophysics. He currently serves as associate professor of the chemical engineering department at The City College of the City University of New York.

Prior to his academic career, Professor Castaldi worked as manager of the Fuel Processor Component Development for Precision Combustion Inc. in New Haven, Connecticut, overseeing projects totaling $5 million.

Simon Chignell

Head of Business Development
DONG Energy - REnescience

Simon Chignell leads the development of Dong Energy’s Renescience recycling technology in the U.S. He has worked extensively with the development of this approach to mixed waste processing in European markets from Dong Energy’s Copenhagen headquarters since 2014. With the commissioning of the first commercial-scale Renescience project in the U.K. earlier this year, he now leads a team looking at the potential of Renescience in the U.S. Simon has more than 10 years prior experience in renewable energy projects through advisory roles at PricewaterhouseCoopers and Ernst and Young in London.

Adam Comora

TruStar Energy

Adam Comora led merger and acquisition efforts in the purchase of TruStar Energy. Adam also holds a leadership role in White Plains, New York-based energy company Fortistar. Prior to TruStar Energy’s acquisition by Fortistar in late 2012, Adam was a partner at EnTrust Capital, an asset management firm in New York City. He was part of the investment team managing long only equities, a long/short strategy launched in February 1999 and a fund of funds launched in 2003. While at EnTrust, assets under management grew from $1 billion to $6 billion.

Craig Cookson

American Chemistry Council

Craig Cookson is the director of sustainability and recycling for the Plastics Division of the American Chemistry Council. Cookson is responsible for leading the Plastics Division’s strategic national initiatives to increase the recycling of plastics, advance opportunities for energy recovery and promote awareness of plastics’ role in providing sustainable solutions to society’s greatest challenges. Before joining ACC, Cookson was the vice president of Integrated Business Strategies at 720 Strategies, where he designed and implemented strategic grassroots programs for corporate, association and nonprofit clients.

Nat Egosi

RRT Design & Construction

Nathiel Egosi, P.E. is president and chief executive officer of RRT Design & Construction, a leading engineering, equipment and construction services company specializing in solid waste processing and recycling. Since 1989, Mr. Egosi has led the construction of more than 100 material recovery facilities and pioneered the development of advanced technologies for the recycling and solid waste industries. He is widely recognized as an expert in process engineering and equipment design for the recovery of materials. Mr. Egosi is a registered Professional Engineer in 20 states and graduated summa cum laude with a degree in Civil Engineering from the Polytechnic University, New York. Mr. Egosi served as chair of the executive committee of the Solid Waste Processing Division (SWPD) of the American Society of Mechanical Engineers (ASME). He is also a member of SWANA, NRC, NYSAR and NYSASSM.

Bill Moore

Harvey Gershman

Gershman, Brickner & Bratton, Inc.

Harvey Gershman, GBB president and co-founder, has been active in the solid waste management field as an adviser to government and industry for more than 40 years, specializing in strategic guidance and infrastructure, and services development assistance to solid waste service/system managers and owners. Gershman has managed the preparation of many long-term plans, market studies, cost and independent feasibility analyses, technology reviews, contractor procurements, contracts development and negotiations, and project financing activities for a broad range of recycling, composting, solid waste management, waste-to-energy and district energy projects. These projects have resulted in sustainable, efficient integrated waste management systems accepted by the community and its leadership.

Mike Gillespie

Chief Technology Officer
Sustainable Waste Power Systems Inc.

Michael J. Gillespie has worked in the engineering design and construction management industries for more than 10 years prior to working for Sustainable Waste Power Systems (SWPS). He has worked on large water and wastewater plants for the New York Department of Environmental Protection and managed a cogeneration project for New York Power Authority. Michael has turnkey experience in designing power generation systems of more than $75 million and program engineering in projects up to $500 million. Michael has also initiated and developed the waste-to-energy system Garbage-In/Power-Out (GIPO) with his father, Chris, in 2012 and opened the commercial prototype plant in 2017.

Keith Howard

Lee County Solid Waste Division

Keith Howard has been in the solid waste industry for more than 25 years and is currently the director for the Solid Waste Division in Lee County, Florida. Lee County manages wastes from Lee and Hendry Counties at an integrated solid waste management system that several waste and recycling operations. He has a Bachelor of Science in Civil Engineering from the University of Illinois and an Master of Business Administration from the University of Alaska Anchorage and is a registered professional engineer in Florida.

Randy Lack

Chief Marketing Officer
Element Markets LLC

Randall co-founded Element Markets LLC in 2015 and currently serves as a chief marketing officer. Upon founding the company, Randall served as the managing director over the emissions and greenhouse gas business. Most recently, Randall has guided element markets in building biomethane portfolios including landfill gas, waste water treatment and anaerobic digestion projects. His experience in structuring environmental commodity transactions including biogas, emissions, renewable energy credits and greenhouse gases has eclipsed $1 billion in total transactions completed. Randall was a founding board member for the Renewable Natural Gas Coalition.

Theodore Moschos

Akrtor Concessions - Helector

Theodore Moschos is a board of directors member of Aktor Concessions, a southeastern Europe infrastructure developer. He leads U.S. business development efforts for Helector, the group’s waste management arm. Helector has delivered more than 65 mechanical biological treatment and composting plants. Theodore has previously worked in the infrastructure development division of Macquarie Capital in London, and for Global Finance private equity funds. He holds an Master of Science in mechanical engineering from the National Technical University of Athens and a Master of Business Administration from Harvard Business School.

Mark Reidy

Kilpatrick Townsend & Stockton LLP

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Dave Robau

National Energy

Dave Robau serves on the technical advisory board of the University of Central Florida’s Florida Solar Energy Center (FSEC) in Cocoa, Florida. He has received industry accreditations through the Association of Energy Engineers, Society of American Military Engineers, United Stated Green Building Council, Florida Association of Environmental Professionals, Air and Waste Management Association and Florida Green Building Coalition. He is also the founder and executive director of a not-for-profit called Gulf Coast Energy Network where he leads a group of energy and sustainability professionals dedicated to expanding the renewable energy market across the Gulf Coast.

Brian Schellati

Van Dyk Recycling Solutions

Brian Schellati is the director of business development at Van Dyk Recycling Solutions. He joined the company in 2010 with a specific focus on growing new markets, such as mixed waste processing, compost refining and glass recycling. He is currently involved in the material recovery facility design for several projects that use many different conversion technologies. With a focus in the power generation industry, Brian has more than 15 years of experience. He received an Master of Business Administration and Bachelor of Science in industrial engineering from Lehigh University.

Dan Sandoval

Kristin Smith

Waste Today magazine

Kristin Smith is the editor of Construction & Demolition Recycling and Waste Today magazines for the Recycling Today Media Group, based in Valley View, Ohio. In her role as editor, Kristin is responsible for shaping the editorial direction and providing relevant market-driven content for The Recycling Today Media Group’s portfolio of print and online products and conferences. In her five years with the publishing group, Kristin has built strong relationships within the solid waste, waste-to-energy, recycling and demolition industries. She has traveled extensively to visit job sites and facility installations as well as to represent the publishing group at industry events.

Tom Smith

Solid Waste Division Chief
Prince William County Public Works

Profile to Follow

Dennis Soriano


Dennis Soriano has 43 years of experience in the waste, recycling and concrete industries. Dennis has held executive level management positions at Waste Management at both the regional and corporate levels. Additionally, he served as chief operating officer of Greenstar North America and most recently CEO of Waste to Water LLC. Dennis has extensive experience in operations, business development and management of municipal contracts. His career in the waste and recycling industries has focused on working with public, private and municipal entities on projects aimed at the long-term preservation of the environment.

Monica Sowders


Monica Sowders, western regional director for Geocycle, has 20 years of experience in creating value and sustainable programs from waste and byproducts. She currently oversees the processing and beneficial use of more than 100,000 tons of waste transformed for use in a diversified alternative fuels program. Monica has managed tire collection, processing and reuse operations, composting operations, C&D recycling market development and biosolids management. She has actively participated in regulatory stakeholder development teams in several states and on EPA committees.

Craig Stuart-Paul


Prior to founding Fiberight in 2006, Craig Stuart-Paul has been involved in the science, operations and management of both the recycling and brewery businesses for almost two decades. Mr. Stuart-Paul launched the Oxford Brewing Co., Maryland's first microbrewery. He segued into the recycling business with the formation of Resource Recovery of Maryland in 1994, which focused on processing recycled glass into furnace-ready material for the glass container industry. In 1996, he formed Fairfax Recycling Inc., a company that recycled residential materials collected in central Maryland and northern Virginia. Mr. Stuart-Paul then formed Atlantic Recycling Technologies LLC and Fiberight LLC to develop advanced fiber recovery and alternative fuel technologies.

Additional Speakers Include:

Joe Regnery, New Source Energy
Jeffrey Weisz, New Canaan Capital Management LLC