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This is to certify that your paper entitled «The effect of different solvents on the performance of PAN membranes for oily wastewater treatment» was indexed with 5 pages, in the CIVILICA citation database, code COI:NCOGP02_100, after evaluation and approval of the referees of the "2nd National Conference On Oil,Gas and petrochemicals held in Gachsaran 2013.

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.