1. Singh, N. et al. Recycling of plastic solid waste: a state of art review and future application. Composites B 115, 409–422 (2016).
2. Environmental Protection Agency. Plastics. EPA
https://www3.epa.gov/epawaste/conserve/tools/warm/pdfs/Plastics.pdf
(2015).
3. PlasticsEurope. Plastics — the facts 2016. An analysis of European plastics production, demand and waste data. PlasticsEurope
http://www.plasticseurope.org/documents/document/20161014113313-plastics_the_facts_2016_final_version.pdf
(2016).
4. Environmental Protection Agency. Energy impacts. EPA
https://www3.epa.gov/warm/pdfs/Energy_Impacts.pdf
(2015). This number reflects cumulative values for mixed plastic waste, HDPE and PET combined. One barrel of crude oil is 5,535,600 BTU.
5. Barnes, K. A., Galgani, F., Thompson, R. C. & Barlaz, M. Accumulation and fragmentation of plastic debris in global environments. Phil. Trans. R. Soc. B 364, 1985–1998 (2009).