Most scripture translations seem to give permission for divorce due to adultery, but that's a translation problem.
The Greek work Pornea, found in the scriptures, can be translated as adultery, fornication, and unchastity (incest). More often than not it is translated into "adultery." If there were an adultery exception to divorce in Scripture, then Jesus would be contradicting himself. See this FR post for more info on this issue.
The Church does not recognize divorce and cannot grant a divorce itself.
The Church recognizes that it does not have the power to dissolve a valid, consumated marriage between Christians.
On that note, the Church cannot recognize the Ecclesiastical Divorce of another "sister" {seperated brethren??} Church.