Is it permissible, Islamically, to pay university expenses and fees that include donations—and are considered a routine, perfunctory procedure for adding a doctor's name to a thesis—from the earnings of forbidden banks?

Usurious gains must be disposed of by spending them on charitable causes and public welfare, with the intention of divesting oneself of unlawful money, not as charity. It is not permissible for someone who possesses these gains to benefit from them directly, such as by paying taxes and obligatory fees with them, because this brings him personal benefit and protects his own money. However, if the requested amount is a donation, it can be paid from usurious gains, considering it a matter of public welfare. But it appears that the questioner is obligated to pay, which makes it an impermissible personal benefit.