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Related Concept Videos

Plastic Behavior01:21

Plastic Behavior

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A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
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Plastic Deformations01:19

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Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
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Mismanaged plastic waste as a predictor for river plastic pollution.

Rose Boahemaa Pinto1, Tim H M van Emmerik1, Kwame Duah2

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Mismanaged plastic waste, not weather, drives plastic pollution in Ghana's Odaw catchment. This study reveals the significant impact of plastic waste on pollution levels, urging a focus on waste management for effective interventions.

Keywords:
Anthropogenic impactCatchmentPeak plastic transportSeasonalitySpecific plastic item

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Area of Science:

  • Environmental Science
  • Hydrology
  • Waste Management

Background:

  • Hydrometeorological processes are commonly cited as primary drivers of plastic transport.
  • The influence of anthropogenic factors, particularly mismanaged plastic waste (MPW), on plastic pollution variability is often underestimated.

Purpose of the Study:

  • To investigate the distinct and combined roles of anthropogenic and hydrometeorological factors in plastic pollution within the Odaw catchment, Ghana.
  • To assess the spatial correlation between macroplastic transport/density and mismanaged plastic waste (MPW) and population density.

Main Methods:

  • Macroplastic transport and density were monitored at ten locations over one year (December 2021-December 2022).
  • Multiple regression analysis examined the impact of rainfall, discharge, and windspeed on macroplastic transport.
  • Spatial correlations were analyzed between macroplastic data and globally modeled MPW estimates and population density.

Main Results:

  • No significant seasonal differences in macroplastic pollution were observed between wet and dry seasons.
  • Weak correlations were found between hydrometeorological variables and macroplastic transport.
  • A strong positive correlation was identified between mismanaged plastic waste (MPW) and macroplastic pollution.

Conclusions:

  • Mismanaged plastic waste (MPW) is a more significant driver of macroplastic pollution variability in the Odaw catchment than hydrometeorological factors.
  • The influence of hydrometeorological factors may be contingent on the magnitude of anthropogenic inputs.
  • Effective plastic pollution interventions require a holistic approach, prioritizing waste management alongside hydrometeorological considerations.