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Recent Studies on Chemical Degradation of Microplastics: A Review
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This review paper summarizes current methods for breaking down microplastics using chemical treatments (like specialized oxidation processes), which are tiny plastic particles found in our water, soil, and even air. While these methods show promise for speeding up plastic breakdown, the research reveals a concerning gap: many techniques don't fully destroy the plastic and can create toxic byproducts, meaning we can't yet rely on these solutions to fully eliminate microplastic contamination from our environment. This matters because until these treatment challenges are solved, microplastics will keep accumulating in the ecosystems we depend on for food and water.
The microplastic (MP) is a persistent contaminant that is commonly found in water, soil, sediments and air, and is less than 5 mm in size. This review aims to present the summary of recent studies concerning their chemical degradation, which include oxidative, photochemical, hydrolysis, advanced oxidation processes and free-radical. It also discusses the factors that determine the degradation efficiency: polymer composition, pH, crystallinity, catalysts, UV intensity and dose of oxidants. Recent technologies such as Fenton and photo-Fenton oxidation, ozonation, hydrogen peroxide treatment, persulfate activation, photocatalysis and electrochemical oxidation are discussed and compared on the basis of species generated, applicable polymers, advantages, and disadvantages. These methods can speed up the chain scission and partial mineralisation, but some challenges are still left unsolved: incomplete degradation, toxicity of intermediates, recovery of catalysts, energy demand and scale-up. The use of recyclable catalysts, real-environment validation, standardised assessment methods, and integration with biological treatment to realize sustainable microplastic remediation at practical scales with minimal secondary pollution should be emphasised in future research.
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This review summarizes recent advances in chemical methods for breaking down microplastics in water, comparing the effectiveness of various techniques including advanced oxidation processes. Developing better ways to destroy microplastics in water is important for public health because current wastewater treatment plants cannot fully remove these persistent particles before water reaches consumers.
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This review examines different methods for breaking down microplastics in the environment, including biological approaches using microorganisms and chemical techniques like advanced oxidation. Each method has trade-offs in effectiveness and scalability, and better standardized testing is needed to move these solutions from the lab to real-world cleanup of microplastic pollution that threatens ecosystems and human health.
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This systematic review summarizes existing research on different methods for breaking down microplastics, including photodegradation, chemical oxidation, and biological approaches. The study evaluates how effective each technique is at destroying microplastics and discusses which methods show the most promise for real-world application. Finding effective ways to degrade microplastics is critical because these particles persist in the environment for hundreds of years and continue to enter our food and water.
Exploring the Role of Advanced Oxidation Processes in Microplastics Research: A Systematic Literature Review
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This review of 84 studies found that certain chemical treatments can break down microplastics (tiny plastic particles) in the environment, but these plastics are surprisingly tough to destroy completely. The research shows that while some treatments can change how microplastics look and behave, fully eliminating them requires much stronger methods that aren't widely available yet. This matters because microplastics are found everywhere—from our drinking water to our food—and understanding how to remove or break them down could help reduce our exposure to these potentially harmful particles.
Chemical Degradation of Microplastics: Current Technologies, Mechanisms, Challenges, and Future Perspectives
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This review looks at new chemical methods for breaking down microplastics instead of just filtering them out of water. The catch: many treatments only break plastics into smaller fragments without fully destroying them, which may not actually reduce health risks. More testing on real, weathered microplastics (not just lab-made ones) is needed before these methods can be trusted for widespread water treatment use.
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