Presented to

[نام نویسنده را انتخاب نمایید]

This is to certify that your paper entitled «Reducing the microbial load and purifying the leachate of the Urmia city landfill site using the pozzolan mineral» was indexed with 14 pages, in the CIVILICA citation database, code COI:NCECM03_025, after evaluation and approval of the referees of the "The 3rd National Conference on Environmental Challenges: The role of industry, mining, and society in developing green governance held in Tehran 2025.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above conference and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.