KEY DATES
- Final date to apply for funding: 5th July 2026.
- Notification of selected abstracts and funding results, if applicable in the form of reimbursement: 15th July 2026.
- Early bird registration for the Conference: 30th June 2026.
COST Action
COST Action CA21146
COST Action CA21146 is a four-year networking action that aims at creating a European network to share information, facilitating technology and knowledge transfer between the academic and industrial sectors, related to Purple Photosynthetic Bacteria (PPB) applications for resource recovery from organic waste sources. Resource recovery includes wastewater or organic waste, open or closed environments, in single or chain processes.
The network associates fundamental-focused and applied research groups, improving lab-scale technology optimization through mechanistic modelling. It benefits the technology transfer from applied-research groups to industry, considerably improving process design. PURPLEGAIN also aims to create a database for techno- economic, social and environmental impacts studies, which facilitates the marketability of both the PPB-based technologies and the products to extract. Some focused products are polyhydroxyalkanoates, single-cell proteins, biomass for energy, biomass as fertilizer, biohydrogen, carotenoids, terpenoids, organic acids, coenzyme Q10, and 5- aminolevulinic acid.
COST
COST is an intergovernmental framework for European Cooperation in Science and Technology established to initiate networking and coordination of nationally funded research activities on a European level. It facilitates bringing good scientists together under light strategic guidance based on networks, called COST Actions, centred around research projects in fields that are of interest to COST countries and cooperating countries.
2nd International Conference on Novel Photorefineries for Resource Recovery
Conference Introduction
The PHOTOREFINERIES CONFERENCE is an event initiated within the framework of the European COST Action PURPLEGAIN (CA21146), a project funded by the European Cooperation in Science and Technology (COST) programme.
The PURPLEGAIN COST Action aims to establish a European network of scientists and experts, particularly those focusing on the fundamentals and applications of purple phototrophic bacteria (PPB) for resource recovery. This network fosters information exchange and facilitates technology and knowledge transfer between academia and industry in this specific biotechnology field. The Action addresses resource recovery from wastewater and organic waste in both open and closed environments, through single-step as well as integrated processes. Finally, PURPLEGAIN seeks to contribute to the advancement of a sustainable circular bioeconomy at the global level.
Building on the vision of PURPLEGAIN, the PHOTOREFINERIES CONFERENCE expands the scope beyond the anoxygenic photosynthesis and works on the development of photo-driven processes in sustainable biorefineries, bringing together scientists, engineers, and experts working in the fields of microbial fundamentals, photocatalysis, microbial photosynthesis, artificial photosynthesis, photo(bio)reactor development, mathematical modeling, and biorefinery processes. The focus of the conference is on photo-activated processes for sustainable production of commodities using light as the common encounter point. Special attention is given to microbial and chemical processes for the conversion of residual streams into high value-added products such as polyhydroxyalkanoates, microbial protein, hydrogen, carotenoids, terpenoids, corrinoids, organic acids, coenzyme Q10, and 5-aminolevulinic acid, along with biomass applications for energy and fertilizers.
Following the success of the 1st PHOTOREFINERIES CONFERENCE, held at the University of Valladolid, Spain, in 2024 and attended by over 170 participants from 26 countries, the 2nd edition will be hosted as a 3-day event from 2nd to 4th September 2026 at the University of Novi Sad, Serbia.
By fostering dialogue across disciplines and expertise, the 2nd PHOTOREFINERIES CONFERENCE provides a platform for efficient discussions on the latest scientific discoveries, industrial applications, and future perspectives – while accelerating the development of sustainable pathways and innovative solutions based on light-driven processes in photo-refineries.
The 2nd PHOTOREFINERIES host country, Serbia, is a land where history speaks through ancient Roman ruins and where the future is being shaped by cutting-edge innovation-especially within one of the world’s largest IT hubs. Whether you have come to collaborate, share knowledge, explore culture, or build partnerships, Serbia, Vojvodina, and Novi Sad offer a unique environment where rich heritage meets forward-thinking innovation.
Join us in a region shaped by visionary minds like Mihajlo Pupin and Nikola Tesla, and inspired by world-class athletes such as Novak Đoković and Nikola Jokić – where the spirit of collaboration flows as powerfully as the Danube itself.
We invite you to experience the beauty, energy, and openness of this extraordinary region – a place where diversity is celebrated, ideas are accelerating, and together, we are creating the future.
We warmly invite you to join us and look forward to welcoming you to the Faculty of Technology Novi Sad, University of Novi Sad.
Documentation for applying
Documentation needed for reimbursement application
The documentation needed for applying for reimbursement is as follows:
- Applicants must upload a short Curriculum Vitae, in English.
- Applicants must upload a motivation letter, in English.
- Applicants must upload a scanned copy of their passport. If applicants do not have a passport, they may upload their national ID card.
- Official document as proof of disability, if applicable.
Please check the General Rules for reimbursement.
Selection criteria
The selection criteria for participants eligible for reimbursement will comply with the COST Excellence and Inclusiveness Policy. The Action will encourage attendance by a diverse selection of participants, taking into consideration the following criteria:
- Underrepresented groups, including persons with disabilities. Priority will be given to underrepresented groups, including persons with disabilities.
- Gender balance.
- Inclusiveness Target Countries (ITCs). Priority will be given to participants from ITCs. The current list of ITCs includes: Albania, Armenia, Bosnia and Herzegovina, Bulgaria, Cyprus, Czech Republic, Estonia, Croatia, Georgia, Greece, Hungary, Lithuania, Latvia, Malta, Moldova, Montenegro, Poland, Portugal, Romania, Slovenia, Slovakia, Republic of North Macedonia, Republic of Serbia, Türkiye and Ukraine.
- Early Career Investigators (ECIs). Priority will be given to PhD students and young postdoctoral researchers, followed by senior postdoctoral researchers and professors.
- Acceptance of a communication at the Conference. This may include an oral presentation, poster presentation or abstract co-authorship. Only one presenter per communication will be considered for evaluation.
- Additional attributes considered by workshop organisers, such as expertise in the field, appropriate core knowledge, willingness to participate, demonstrated interest and the positive impact of participation on the applicant’s future career.
Financial contribution
Financial support through reimbursement does not necessarily cover all expenses. A fixed daily allowance of EUR 100 is available for participants.
In addition, travel reimbursement may be granted as follows:
- Up to a maximum of EUR 600 in total for each successful applicant from an ITC country.
- Up to a maximum of EUR 450 in total for each successful applicant from a non-ITC country.
- Up to a maximum of EUR 100 in total for each successful applicant from Serbia, for travel over a distance of 100 km.
Please note that locals from Novi Sad cannot claim travel reimbursement.
This financial contribution should be understood as financial aid intended to help applicants cover the expenses of their participation in the Workshop. It does not aim to cover 100% of the expenses.
When claiming costs in e-COST, please ensure that the amount claimed is accurate. Claims higher than the values indicated above may require modification, which could delay payment.
Evaluation process and result announcement
The selection committee, composed of the Action Chair, the Vice Chair, the Grant Awarding Coordinator, the Training Schools Coordinator, the Organising Committee members and the local organisers, will evaluate the applications shortly after the submission deadline.
All applicants will be informed of the evaluation results.
Successful applicants will first be informed by the Organising Committee. They will then receive an email from the Grant Holder, the Grant Letter Notification, confirming the official approval of the reimbursement, the granted budget and the payment request form, which must be completed after the Conference.
Criteria of reimbursement
If the total amount requested by all applications within a call does not exceed the available budget, the applications will be handled by the selection committee.
If there are more applications than available funding, the following procedure will apply:
- A list of all applications, including an informative summary, will be distributed to all members of the selection committee.
- To guarantee a fair and objective evaluation, evaluators should have no affiliation with either the home or the host institution of the application in question.
- All applications will be evaluated by two members of the selection committee.
- The Grant Awarding Coordinator will distribute the proposals to the individual evaluators.
- The evaluators will report their evaluations to the Grant Awarding Coordinator.
- The Grant Awarding Coordinator will rank all evaluations and report the final result to the selection committee for discussion and approval.
- Applicants will be informed of the decision reached.
Evaluation criteria and maximum points
| Criterion | Maximum points |
|---|---|
| a) Before any further criteria are considered | |
| Application is complete and fulfils all formal requirements | Pass / No pass |
| b) Evaluation of the proposal | |
| Applicant belongs to an underrepresented group | 0 or 20 |
| Applicant is from an ITC country | 0 or 10 |
| Applicant is an ECI | 0 or 5 |
| Applicant promotes gender balance | 0 to 5 |
| Impact on the career of the applicant | 10 |
| Willingness to participate based on the motivation letter | 5 |
| Presenter of an accepted oral communication | 40 |
| Presenter of an accepted poster communication | 20 |
| Co-author of an accepted abstract | 10 |
| CV of the applicant | 10 |
| Relevance to the objectives of the PurpleGain Action | 20 |