great pacific garbage patch

So it's quite easy for use to get the debris and not get the ocean life.YOUNG: Now Doug you mentioned the possibility of converting the plastic into some sort of fuel. But plastics have all sorts of toxin materials in them. How do you convert it to fuel without creating pollution in the process? Well that's a great question. And in fact, a problem especially with marine life in the gyre and marine debris is that it also is a bonding agent if you will for heavy metals, persistent organic particles that are in the ocean bind themselves to this material.

So not only do you have a plastic particle, but you have millions of small bits of the POPs which are toxic. And the problem here is when the marine life eats this plastic, it may die of inability to digest the material, but it's also these toxins that are getting into that animal or fish. And when the next animal or fish in the food chain eats that it's going up into the whole ecosystem including into potentially what we're eating.

So some of the new technologies that can basically liquefy and refine plastic material back into either a diesel or a heavy fuel, they have an ability to detoxify that in the process. In fact, the way that this system works is if you have a kilo roughly or a pound of plastic being put in the machine, you get about eighty percent of that back in liquid fuel form, about twenty percent is gas form. And that gas is actually going to be used to run the plant itself. So it's a very, very good new system and there's a value to the waste wherever it's collected. That gives people incentive to go collect it.
A pair of scientific ships sets sail this month to explore another unusual ocean phenomenon: a giant floating patch of plastic. The currents of the swirling Pacific gyre northeast of Hawaii push some four million tons of plastic into a soupy mass nearly twice the size of Texas. It's killing marine life and adding to the ocean's toxic burden.
So scientists with Project Kaisei want to scoop up the plastic and put it to good use. Mary Crowley and Doug Woodring started the project. Mary, Doug, welcome to Living on Earth.CROWLEY: It's a pleasure to be on the program.WOODRING: Great to talk to you today.YOUNG: Well, first of all, Kaisei – what's that mean?CROWLEY: Kaisei means ocean planet in Japanese.YOUNG: And that's also the name of the vessel you'll be sailing on?CROWLEY: Yes. The Kaisei is 151-foot brigantine and we'll be sailing with a group of six marine scientists, a group of about five that are there concentrating on capture techniques and what would be the most energy efficient ways of capturing the marine debris and plastics in the ocean.YOUNG: And Doug, you'll be on a separate ship, right?
WOODRING: Yes, that's correct. I'll be on a research vessel that's owned by Scripps Institution of Oceanography called the New Horizons. We leave from San Diego and the Kaisei leaves from San Francisco. So we'll both be in different parts of the gyre and the good part of that is we're getting a lot of different data points and information from different areas that haven't been collected before.YOUNG: So what are the main questions you think we need to answer if we're gonna find a way to clean this up?
WOODRING: I think the main thing is gonna be how to net it or catch it in an efficient way, 'cause new technologies exist that allow us to remediate that plastic and actually turn it into a fuel. If we're able to do that then there's a value to capturing that product and that can help subsidize a future cleanup effort. So that the trick is really figuring out how much volume we might get and therefore deduct in how much output we could get from a byproduct which is a fuel which could then subsidize our trip.YOUNG: Now how do you make sure you're just scooping up the plastic. It can't be that simple. There's gotta be all kinds of flotsam and I imagine even some marine life that's latched on to the floating stuff, right?CROWLEY: Yes, but this is the sort of thing we're going to test and find out so we do the best job of it.

We've really been reaching out to people all around the world about capture techniques and about the idea of doing some passive systems where we would be able to put up netting and use sea anchors going down to a different level. And so we'd be able to use the surface current to bring us the debris. We should be able to fairly easily not involve fish or marine mammals, etc. because the debris doesn't move except for the current.