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A Plastic Ocean

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A Plastic Ocean 1 i A Plastic Ocean The Science behind the Film Contributors: Dr Christopher Green and Professor Susan Jobling Institute of Environment, Health and Societies Department of Life Sciences Brunel University London, UK Reviewers: The Plastic Oceans Foundation (UK) thanks Dr Arturo Castillo Castillo of the Centre for Environmental Policy, Imperial College London (UK) and one additional reviewer who wished to remain anonymous, for reviewing an earlier draft of this report. Their insightful comments were invaluable and we are grateful for their contributions. Funded by Plastic Oceans Foundation (UK), Shining Century Holdings Ltd and the White Feather Foundation. Contract Manager: Dr Geoff Brighty (Science and Policy Advisor) Enquiries to: Dr Christopher Green, Brunel University London [email protected] Jo Ruxton, CEO, Plastic Oceans Foundation (UK). [email protected] Images from the film ‘A Plastic Ocean’ are reproduced with permission of Plastic Oceans Foundation (UK). This document is made available to the Public Domain. Any reproduction of the document must be attributed to the authors. The document is available from the Brunel University London and Plastic Oceans Foundation websites. The document can only be embedded in third party websites with express permission of the authors and Plastic Oceans Foundation (UK). ii TABLE OF CONTENTS TABLE OF CONTENTS …………………………………………………………………………………...…. iii PREFACE …………………………………………………………………………………...…………………. v KEY MESSAGES .…...……………………………………………………………………………...………… vi LIST OF FIGURES ...……………………………………………………………………………….…..…….. xi LIST OF TABLES ...….………………………………………………………………………........…………. xii A PLASTIC OCEAN: THE SCIENCE BEHIND THE FILM …………………………………………………1 1. Introduction ...................................................................................................................................... 1 2. The importance of a healthy ocean ................................................................................................. 2 3. Plastic as a material ......................................................................................................................... 3 4. Plastic in the environment ................................................................................................................ 4 4.1 Microplastics............................................................................................................................ 5 4.2 Sources of marine plastic ........................................................................................................ 6 4.3 Distribution and Fate ............................................................................................................... 9 4.3.1 Plastics on the sea surface and the ocean “Garbage Patches” ........................................ 10 4.3.2 Plastic on the sea floor ...................................................................................................... 12 5. Plastic and its effects on wildlife health ......................................................................................... 13 5.1 Entanglement ........................................................................................................................ 14 5.2 Ingestion ................................................................................................................................ 15 5.2.1 Seabirds: A Plastic Ocean case study .............................................................................. 16 5.2.2 Impacts of microplastic ingestion ...................................................................................... 17 5.3 Chemical effects .................................................................................................................... 18 5.3.1 Chemicals derived from plastics in the environment ......................................................... 18 5.3.2 Adsorption of additional contaminants by plastic debris ................................................... 19 5.3.3 Ingestion of plastic as a route of chemical exposure ........................................................ 20 5.4 Other implications ................................................................................................................. 22 6. Plastics and their human impacts .................................................................................................. 23 6.1 The use of plastic, chemical exposures and health concerns .............................................. 23 6.1.1 Exposure to EDCs during foetal development and early childhood .................................. 24 6.1.2 EDCs in plastics: bisphenol A ........................................................................................... 25 6.1.3 Other EDCs in plastics ...................................................................................................... 26 6.2 Plastic in the environment and its human impacts ................................................................ 28 6.2.1 Microplastics in food and potential risks to human health ................................................ 28 6.2.2 Poor waste management, links with poverty and human health ....................................... 29 6.2.3 Ocean plastics, public health and wellbeing ..................................................................... 31 6.2.4 Economic impacts of plastic pollution ............................................................................... 32 7. Solutions ........................................................................................................................................ 33 7.1 Improved waste collection and management ........................................................................ 35 7.2 Plastic as a valuable resource in a circular economy ........................................................... 36 7.2.1 Reduce .............................................................................................................................. 37 iii 7.2.2 Remove ............................................................................................................................. 38 7.2.3 Re-design .......................................................................................................................... 38 7.2.4 Re-use and Recycle .......................................................................................................... 40 7.2.5 Recovery and Advanced Thermal Treatment Technologies ............................................. 43 7.3 Can we clean up our environment? ...................................................................................... 45 8. Moving forward .............................................................................................................................. 47 REFERENCES………………………………………………………………………………………………... 48 iv PREFACE In this document we present scientific plastics associations from regions across the information and key facts underpinning the globe, supporting projects aimed at education, production of the film, A Plastic Ocean. This is research, public policy, sharing best practices, part of an on-going collaboration between plastics recycling/recovery, and plastic pellet Brunel University London and the Plastic containment. Oceans Foundation to communicate concerns about the potential threats posed by plastic It is likely that large uncertainties in the extent waste to planetary health: the health of human of ecological, social and economic impacts will civilization and the state of the natural system remain for some time. However, all on which it depends (Whitmee et al., 2015). stakeholders agree that there is a strong moral reason that humanity should not allow the We live in a world in which plastics are an ocean to become more polluted by plastic essential part of everyday life. However, debris and that there is a clear need to move increasing global consumption, combined with towards a more circular economic model for inadequate waste management, are leading to the plastic production cycle. Some attention an unsustainable quantity of plastic waste in also needs to be directed at safer plastic the global ocean. Worldwide annual production chemical additives because inadequate of plastics is close to 300 million metric tons, separation of waste streams during plastic equivalent to the entire biomass of the adult recycling may result in contamination of human population. Estimates suggest that up consumer goods with additives that have to 10% of discarded plastic, around 8 million hazardous properties. Exposures of humans to metric tons per annum, ends up in the ocean, such chemicals already occurs through our comprising the greatest component of marine use of plastic and from foods that have been in litter. Evidence is mounting of the contact with plastic, so it is important to environmental and health burden placed by minimize these exposures wherever possible. plastic waste, and chemicals leaching from Some of these chemicals may affect the plastics, although the significance and reach of reproductive, endocrine, immune or nervous the global impacts of plastic litter on freshwater systems and there are international objectives and marine ecologies, human health and to achieve sound management of such wellbeing remain largely unclear. chemicals throughout their life cycle by 2020. Whilst A Plastic Ocean was being produced, Education is essential to solving the problem the United Nations Environment Program of plastic oceans. The lack
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