Yes you can save a barrel of it, trickle water through it, save the water, boil it off to make lye, and eventually make soap out of it.
Its a long hard process thats time consuming, smelly, hot, and dangerous at times. To end up with a soap that will probably peel your skin off, remove paint, and disintigrate clothing in a couple of washes.
OR you could just throw it in a garbage bag and send it to the dump.