The Institute of Chemical Engineering (BAS), CMC Bulgaria, the PRISE Foundation, and the organizing committees of SPIL’26 and CLES-CE 2026, are pleased to announce a new scientific session entitled:

“Business and Social Aspects of Sustainable Development”

The session is part of the Joint Symposium and will provide a platform for discussing the latest ideas and achievements at the intersection of business, society, and sustainable development. Researchers and scholars are invited to participate both in the conference and in this new session.

Particular emphasis is placed on encouraging young researchers from the Faculty of Economics and Business Administration. In order to support their development, incentives are envisaged, such as awards, including academic literature, as well as coverage of participation fees for conferences and scientific forums.

The Joint Symposium brings together:

• 10th Sustainable Process Innovation and Modelling Conference (SPIL’26)
• 3rd International Conference on Cleaner Energy and Chemical Engineering for Sustainable Circular Economy (CLES-CE 2026)

The preliminary programme includes:

• Two plenary lectures
• Oral and poster sessions
• A workshop focused on knowledge transfer and scientific discussion

Workshop

Process Network Synthesis and Optimisation with P-graph

The workshop will cover:

• Fundamentals of the P-graph framework
• Use of P-graph Studio for modelling and solving network problems
• Worked examples and real-world applications

Event Details

• Dates: 10 - 12 May 2026
• Location: Sofia, Bulgaria

Publication Opportunities

Selected papers will be invited for extension and submission to special issues of leading journals, including:

• Energy (Elsevier)
• Discover Sustainability (Springer)
• Thermal Science and Engineering Progress (Elsevier)
• Clean Technologies and Environmental Policy (Springer)
• Cleaner Energy Systems
• Archives of Thermodynamics
• Bulgarian Chemical Communications

Registration

• Early-bird deadline: 15 April 2026
• Standard on-site fees: from 450 EUR (regular) / 400 EUR (students)
• Online participation options available

Important Dates

• 31 March 2026 – Abstract submission deadline
• 10 April 2026 – Notification of acceptance
• 15 April 2026 – Early-bird registration
• 30 April 2026 – Final registration deadline

More Information

• SPIL’26 website: https://spilconference.org/
• Registration system: https://registration.sdewes.org/spil2026