Same way you dispose regular garbage, which has same challenges. I went to the tour of recycling plant, and as part of the tour they told us what happens with

Same way you dispose regular garbage, which has same challenges. I went to the tour of recycling plant, and as part of the tour they told us what happens with Seattle garbage: they excavate a pit, line it up with plastic, put garbage in, cover it with plastic, put soil on top. Without supply of oxygen it basically stays there almost forever. They cut a carrot with was in such pit for 10 years. It was black on the outside, but still orange inside! Anyway, put trees in such pits, and you have carbon capture!