A short review: Potential use of plastic waste as adsorbent for various pollutants

Abd-Aziz, Noorizan; Alias, Salina; Bashar, Nur Azwa Muhamad; Amir, Amnorzahira; Abdul-Talib, Suhaimi; Tay, Chia Chay

doi:10.1063/1.5117094

Cited by 11 publications

(3 citation statements)

References 22 publications

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“…A wide range of pollutants including organic such polyaromatic hydrocarbons, polychlorinated biphenyls, dichlorodiphenyltrichloroethanes, antibiotics, dyes, oil etc. and inorganic pollutants such as heavy and radioactive metals can be adsorbed by plastic waste in the marine environment (Narciso-Ortiz et al 2020;Li et al 2018;Abd-Aziz et al 2019). The adsorption of pollutants by plastics make them vectors for pollutants over long distances within the marine environment (Verla et al 2019a, b;Zhang et al 2020) and in the atmosphere (Enyoh et al 2019a, b) conferring double danger to humans and animals from exposure.…”

Section: Introductionmentioning

confidence: 99%

In silico binding affinity analysis of microplastic compounds on PET hydrolase enzyme target of Ideonella sakaiensis

Duru

Enyoh

2021

Bull Natl Res Cent

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Background The world today is faced with the humongous challenge of removing the numerous plastic wastes in our environment. Efforts in the removal or remediation of these materials from the ecosystem are presently at the budding stage. Some researchers have shown that certain bacterial enzymes have the ability to hydrolyze and further degrade these plastic compounds. In this study, the ability of PET hydrolase enzyme to hydrolyze polyvinylchloride, polyurethane, polymethyl methacrylate, polyamide, polyethylene terephthalate, and polycarbonate was investigated in silico. Results The binding affinity values of polycarbonate (− 5.7 kcal/mol) and polyethylene terephthalate (− 5.2 kcal/mol) on the enzyme targets were the highest and showed that they are likely to be efficiently hydrolyzed by this bacteria in the environment. The binding affinity of polyvinylchloride was the lowest (− 2.2 kcal/mol) and suggested that it would show resistance to hydrolysis by the PET hydrolase enzyme. Conclusion The findings from this study showed that PET hydrolase enzyme from Ideonella sakaiensis could be efficient in the hydrolysis of plastic wastes composed mainly of polycarbonate and polyethylene terephthalate.

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Section: Introductionmentioning

confidence: 99%

In silico binding affinity analysis of microplastic compounds on PET hydrolase enzyme target of Ideonella sakaiensis

Duru

Enyoh

2021

Bull Natl Res Cent

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“…Sorption (specifically adsorption) is the gathering and attachment/adherence of any substance (molecular species) to a solid surface [ 87 ]. The surface topology and surface properties of plastics, such as point zero charge, large surface area, acid-base characteristics and functional groups are the key influencing factors for the adsorption of various substances, such as heavy metals, crude oil, sunflower oil, oil spills in marine environments, and dyes [ 88 ]. This makes plastic particles as a mean of environmental remediation [ 89 , 90 ] low cost, but also they can act as carriers of contaminants/pollutants (e.g., poly-flouoroalkyl substance, PCBs) putting aquatic life and human health at risk (e.g., Gola et al [ 29 ]).…”

Section: Characteristics That Facilitate Plastics To Adsorb Different...mentioning

confidence: 99%

Plastic Interactions with Pollutants and Consequences to Aquatic Ecosystems: What We Know and What We Do Not Know

2022

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Plastics are a group of synthetic materials made of organic polymers and some additives with special characteristics. Plastics have become part of our daily life due to their many applications and uses. However, inappropriately managed plastic waste has raised concern regarding their ecotoxicological and human health risks in the long term. Due to the non-biodegradable nature of plastics, their waste may take several thousands of years to partially degrade in natural environments. Plastic fragments/particles can be very minute in size and are mistaken easily for prey or food by aquatic organisms (e.g., invertebrates, fishes). The surface properties of plastic particles, including large surface area, functional groups, surface topography, point zero charge, influence the sorption of various contaminants, including heavy metals, oil spills, PAHs, PCBs and DDT. Despite the fact that the number of studies on the biological effects of plastic particles on biota and humans has been increasing in recent years, studies on mixtures of plastics and other chemical contaminants in the aquatic environment are still limited. This review aims to gather information about the main characteristics of plastic particles that allow different types of contaminants to adsorb on their surfaces, the consequences of this adsorption, and the interactions of plastic particles with aquatic biota. Additionally, some missing links and potential solutions are presented to boost more research on this topic and achieve a holistic view on the effects of micro- and nanoplastics to biological systems in aquatic environments. It is urgent to implement measures to deal with plastic pollution that include improving waste management, monitoring key plastic particles, their hotspots, and developing their assessment techniques, using alternative products, determining concentrations of micro- and nanoplastics and the contaminants in freshwater and marine food-species consumed by humans, applying clean-up and remediation strategies, and biodegradation strategies.

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“…Therefore, the cleaning and recovery of spilled oils have been an urgent but challenging task. Materials with a porous structure has shown potential in separating the oil from the ocean water because of good absorption capacity and efficiency (Choi et al, 2011;Xia et al, 2018;Abd-Aziz et al, 2019;Huang et al, 2021). The oil-absorbing potential of the THF-related solid in this work was inferred from its 3D porous structure and hydrophobicity resulted from the major component, plastic-derived hydrocarbons.…”

Section: Solid Application As Oil Absorbentmentioning

confidence: 93%

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A short review: Potential use of plastic waste as adsorbent for various pollutants

Cited by 11 publications

References 22 publications

In silico binding affinity analysis of microplastic compounds on PET hydrolase enzyme target of Ideonella sakaiensis

In silico binding affinity analysis of microplastic compounds on PET hydrolase enzyme target of Ideonella sakaiensis

Plastic Interactions with Pollutants and Consequences to Aquatic Ecosystems: What We Know and What We Do Not Know

Value-added products from waste materials

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