The fourth meeting of representatives of the partner organisations was held at the Clean&Circle Centre of Competence. During the discussions, significant progress was reported in the number and development of scientific studies—one of the main objectives set by the team at the previous meeting. The partners discussed both the results achieved and the potential practical applications of the scientific developments, as well as future goals, ideas, and plans for the Centre’s development. The meeting was once again opened by the coordinator of Clean&Circle, Assoc. Prof. Dr Ivaylo Yotinov, who emphasised the importance of active cooperation between the partner organisations.

On 6 July 2026, a meeting with Prof. Dr. Kostadin Kostadinov of the GIS-Transfer Center Foundation was held at the Clean&Circle Center of Competence. The event was organized at the invitation of the Institute of Organic Chemistry with Centre of Phytochemistry at the Bulgarian Academy of Sciences (IOCCP–BAS), one of the center’s key partners. The discussion focused primarily on opportunities for scientific developments to reach the business sector through technology transfer and partnerships with companies.

Throughout the training period, the guest gained insight into the design and the operation of a wide range of plasma devices intended for treatment of liquids, part of the equipment of the Laboratory of Plasma technologies. The trainee also observed a microbiological experiment involving plasma treatment of bacterial cultures and demonstrations of several research instruments and methodologies used by the host institution.

Within the framework of the project “Innovative Solutions for Obtaining Energy and Products through the Utilization of Biodegradable Waste” (KP-06-IP-China 4/16.12.2024), scientists and young researchers from the Faculty of Biology at Sofia University “St. Kliment Ohridski” conducted a series of experimental studies aimed at developing sustainable technologies for producing renewable energy from biodegradable waste.