A review of the potential utilisation of plastic waste as adsorbent for removal of hazardous priority contaminants from aqueous environments

Research output: Contribution to journalReview article

Abstract

There is growing global awareness of the presence and negative impacts of waste plastic in the marine environment. Risks to wildlife include ingestion and entanglement for macro-plastic (larger than 5 mm in length), alongside food chain transfer for micro-plastics (less than 5 mm in length). Plastics in the marine environment have also been shown to adsorb and accumulate contaminants from seawater, e.g., heavy metals and hydrophobic organic compounds. This means that plastics can additionally act as vectors for transport of contaminants, permitting ecotoxicological risks to be spatially extended. However, the ability of waste plastic to adsorb pollutants also offers potential opportunity, if they can be used for the decontamination of wastewater. Here, we provide an overview of marine plastic types and distribution, and then systematically assess their potential to be repurposed as novel adsorbents. Data published in recent years are interrogated to gain an overview of the interaction mechanisms between marine plastics and both organic and inorganic contaminants. In addition, factors that may be exploited to enhance their performance in removal of contaminants are also reviewed and prioritised, e.g., surface modification and activation. This paper highlights the novel potential of repurposing plastic waste for wastewater treatment applications and seeks to identify key knowledge gaps and future research priorities for scientists and engineers.

Original languageEnglish
Article number113698
JournalEnvironmental Pollution
Early online date30 Nov 2019
DOIs
Publication statusE-pub ahead of print - 30 Nov 2019

Fingerprint

Utilization Review
Adsorbents
Plastics
Impurities
Waste Water
Food Chain
Decontamination
Seawater
Heavy Metals
Organic compounds
Wastewater treatment
Heavy metals
Macros
Surface treatment
Wastewater
Eating
Chemical activation
Engineers

Keywords

  • Adsorption
  • Interaction mechanisms
  • Material characterisation
  • Plastic-based adsorbent
  • Water treatment

Cite this

@article{4497e8efa10948a4b2dd358d4386d1f9,
title = "A review of the potential utilisation of plastic waste as adsorbent for removal of hazardous priority contaminants from aqueous environments",
abstract = "There is growing global awareness of the presence and negative impacts of waste plastic in the marine environment. Risks to wildlife include ingestion and entanglement for macro-plastic (larger than 5 mm in length), alongside food chain transfer for micro-plastics (less than 5 mm in length). Plastics in the marine environment have also been shown to adsorb and accumulate contaminants from seawater, e.g., heavy metals and hydrophobic organic compounds. This means that plastics can additionally act as vectors for transport of contaminants, permitting ecotoxicological risks to be spatially extended. However, the ability of waste plastic to adsorb pollutants also offers potential opportunity, if they can be used for the decontamination of wastewater. Here, we provide an overview of marine plastic types and distribution, and then systematically assess their potential to be repurposed as novel adsorbents. Data published in recent years are interrogated to gain an overview of the interaction mechanisms between marine plastics and both organic and inorganic contaminants. In addition, factors that may be exploited to enhance their performance in removal of contaminants are also reviewed and prioritised, e.g., surface modification and activation. This paper highlights the novel potential of repurposing plastic waste for wastewater treatment applications and seeks to identify key knowledge gaps and future research priorities for scientists and engineers.",
keywords = "Adsorption, Interaction mechanisms, Material characterisation, Plastic-based adsorbent, Water treatment",
author = "Huiyi Zhang and Sabolc Pap and Taggart, {Mark A.} and Boyd, {Kenneth G.} and James, {Neil A.} and Gibb, {Stuart W.}",
note = "{\circledC} 2019 Elsevier Ltd.",
year = "2019",
month = "11",
day = "30",
doi = "10.1016/j.envpol.2019.113698",
language = "English",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - A review of the potential utilisation of plastic waste as adsorbent for removal of hazardous priority contaminants from aqueous environments

AU - Zhang, Huiyi

AU - Pap, Sabolc

AU - Taggart, Mark A.

AU - Boyd, Kenneth G.

AU - James, Neil A.

AU - Gibb, Stuart W.

N1 - © 2019 Elsevier Ltd.

PY - 2019/11/30

Y1 - 2019/11/30

N2 - There is growing global awareness of the presence and negative impacts of waste plastic in the marine environment. Risks to wildlife include ingestion and entanglement for macro-plastic (larger than 5 mm in length), alongside food chain transfer for micro-plastics (less than 5 mm in length). Plastics in the marine environment have also been shown to adsorb and accumulate contaminants from seawater, e.g., heavy metals and hydrophobic organic compounds. This means that plastics can additionally act as vectors for transport of contaminants, permitting ecotoxicological risks to be spatially extended. However, the ability of waste plastic to adsorb pollutants also offers potential opportunity, if they can be used for the decontamination of wastewater. Here, we provide an overview of marine plastic types and distribution, and then systematically assess their potential to be repurposed as novel adsorbents. Data published in recent years are interrogated to gain an overview of the interaction mechanisms between marine plastics and both organic and inorganic contaminants. In addition, factors that may be exploited to enhance their performance in removal of contaminants are also reviewed and prioritised, e.g., surface modification and activation. This paper highlights the novel potential of repurposing plastic waste for wastewater treatment applications and seeks to identify key knowledge gaps and future research priorities for scientists and engineers.

AB - There is growing global awareness of the presence and negative impacts of waste plastic in the marine environment. Risks to wildlife include ingestion and entanglement for macro-plastic (larger than 5 mm in length), alongside food chain transfer for micro-plastics (less than 5 mm in length). Plastics in the marine environment have also been shown to adsorb and accumulate contaminants from seawater, e.g., heavy metals and hydrophobic organic compounds. This means that plastics can additionally act as vectors for transport of contaminants, permitting ecotoxicological risks to be spatially extended. However, the ability of waste plastic to adsorb pollutants also offers potential opportunity, if they can be used for the decontamination of wastewater. Here, we provide an overview of marine plastic types and distribution, and then systematically assess their potential to be repurposed as novel adsorbents. Data published in recent years are interrogated to gain an overview of the interaction mechanisms between marine plastics and both organic and inorganic contaminants. In addition, factors that may be exploited to enhance their performance in removal of contaminants are also reviewed and prioritised, e.g., surface modification and activation. This paper highlights the novel potential of repurposing plastic waste for wastewater treatment applications and seeks to identify key knowledge gaps and future research priorities for scientists and engineers.

KW - Adsorption

KW - Interaction mechanisms

KW - Material characterisation

KW - Plastic-based adsorbent

KW - Water treatment

UR - http://www.scopus.com/inward/record.url?scp=85076240975&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85076240975&partnerID=8YFLogxK

U2 - 10.1016/j.envpol.2019.113698

DO - 10.1016/j.envpol.2019.113698

M3 - Review article

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

M1 - 113698

ER -