A small snippet here of trying to monetise plastic. An economic method but it does tackle the issue of value: http://plasticbank.org/
How does it work? The organization sets up special repurposing centers in countries where there’s an abundance of both plastic waste and poverty. Locals then trade in recyclable plastic — harvested from land, waterways and oceans — in exchange for education, micro-credit loans, tools, household items and 3-D printing.
Maria Carter http://earth911.com/work/the-plastic-bank/