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Related Concept Videos

Bioplastics01:27

Bioplastics

70
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
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Microbial Bioremediation of Plastics01:28

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Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
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Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis
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Pressure-Driven Membrane Processes for Removing Microplastics.

Priscila Edinger Pinto1, Alexandre Giacobbo1, Gabriel Maciel de Almeida1

  • 1Post-Graduation Program in Mining, Metallurgical and Materials Engineering (PPGE3M), Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, n. 9500, Porto Alegre 91509-900, RS, Brazil.

Membranes
|March 26, 2025
PubMed
Summary
This summary is machine-generated.

Membrane separation processes effectively remove microplastics and nanoplastics from water, achieving up to 100% removal. This review examines challenges and innovations in pressure-driven membrane systems for effective plastic pollution control.

Keywords:
microfiltrationmicroplasticsnanofiltrationnanoplasticsreverse osmosisultrafiltration

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Area of Science:

  • Environmental Science
  • Chemical Engineering
  • Materials Science

Background:

  • Increasing consumption of polymeric materials and inadequate waste management lead to widespread microplastic and nanoplastic contamination in aquatic environments.
  • These plastic particles disperse through stormwater, wastewater, and leachate, polluting rivers, lakes, and oceans.

Purpose of the Study:

  • To review the effectiveness of pressure-driven membrane separation processes for removing microplastics and nanoplastics from aqueous matrices.
  • To analyze operational challenges, membrane innovations, and system comparisons for microplastic and nanoplastic removal.

Main Methods:

  • Review of literature on microfiltration, ultrafiltration, nanofiltration, and reverse osmosis for microplastic and nanoplastic removal.
  • Analysis of system performance, membrane modifications, and suitability for different aqueous matrices.

Main Results:

  • Membrane processes demonstrate high efficiency, achieving up to 100% removal of microplastics and nanoplastics.
  • Various membrane systems present distinct challenges and advantages depending on the specific application and water matrix.

Conclusions:

  • Pressure-driven membrane technologies are highly promising for mitigating microplastic and nanoplastic pollution in water.
  • Further research is needed to address operational weaknesses and optimize these systems for widespread application in removing emerging contaminants.