Can soiled scriptures be burned?

According to the belief of Buddha nature it is better not to burn it, if it is not too ugly we can collect it. If there is no Buddha's faith, really want to burn it, when you burn it to find a cleaner container, as if you bought an iron bucket has not burned anything else, then you incinerate in this bucket when incinerated, the most common is to buy an aluminum basin, in the basin on the side of the burn, the finished ash into a clean plastic bag, and then the outside and then wrapped it up, the ash thrown into the sea, tethered to a stone sinking, there is a sea place is easier to have the conditions. Stone sinking, there is the sea is easier to have this condition, that there is no sea to the deep forests to the top of the mountain, and then find a clean place to dig a hole to bury it on the good.