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Microalgal Bioremediation of Microplastics: Current Advances, Challenges and Environmental Applications
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Tiny plastic particles called microplastics are everywhere in our water and food, and they're small enough to slip into our cells and tissues, raising health concerns. This review paper looks at how microscopic algae might help clean up the problem—by trapping plastic particles, sticking to them and sinking them out of the water, or even breaking them down using natural enzymes. While this is still an emerging area of research rather than a ready-to-use solution, it points to a promising, eco-friendly way to reduce the amount of plastic pollution that ends up in our water, food, and ultimately our bodies.
The world is facing a triple global crisis: climate change, loss of biodiversity, and pollution. Plastics, man-made polymers from primary fossil fuel sources, have pervasively entered almost every sector and thereby caused huge environmental pollution. Microplastic (MPs) sizes range between 1 μm and 5 μm, and nanoplastics are less than 1 μm in size, respectively. Behaviour, accumulation and movement of plastics in soil, water and air depend on their size. Smaller sizes of microplastics and nannoplastics can easily enter cells, tissues, and finally, the food chain, and pose growing ecological and health concerns due to their persistence. It also acts as an adsorbent and has the ability to penetrate food webs. Their diverse shapes, especially fibres, increase their dispersal and bioavailability in aquatic ecosystems. Recent findings indicate that microalgae contribute to the mitigation of microplastic pollution. Microalgae, diverse photosynthetic microorganisms ranging from 0.5 to 200 μm, interact with microplastics through processes such as adsorption, aggregation, and potential biodegradation mechanisms, including toxin systems or enzymes produced by the microalgae, utilising plastic polymers as carbon sources. The filamentous morphology of some species, such as Spirulina sp., increases the entrapment and potential degradation of microplastic fibres. It is essential to understand these interactions to construct sustainable means of mitigating microplastic pollution and recovering the aquatic ecosystem health. Microalgae produce enzymes such as lipases, esterases, and cellulases, which facilitate the biodegradation of plastics. Microalgae form biofilm on the surface of microplastics. They also secrete sticky extracellular polymeric substances (EPS) that cause the microplastic to sink to the bottom of the water body, which helps to remove microplastics from surfaces. This review summarises knowledge on microalgae–microplastic interactions, with a focus on their potential for bioremediation of microplastics and also sustainable conservation of the environment.
More Papers Like This
Microalgae-Based Bioremediation of Microplastic-Contaminated Industrial Wastewater: Mechanisms and Challenges
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Tiny plastic particles that pollute factory wastewater can eventually make their way into our water supply, rivers, and food chain. This review paper pulls together existing research showing that certain algae can trap, absorb, or even partially break down these microplastics, offering a cheaper, greener cleanup method than current chemical treatments, plus the leftover algae could be reused as fuel or fertilizer instead of going to waste.
Microbial Bioremediation of Microplastics
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Tiny plastic bits called microplastics are now everywhere in our environment—and even in our bodies—raising concerns about long-term health effects. This review paper rounds up what scientists currently know about using bacteria and other microbes to break down these plastic particles, a promising cleanup strategy, while also pointing out the challenges researchers still need to solve before it works at scale. The takeaway: nature may offer tools to help tackle plastic pollution, but we're not there yet, so reducing microplastic use in the first place still matters for protecting our health.
Green Solutions: Bioremediation Strategies Against Microplastic Pollution-A Comprehensive Review
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Microplastics, tiny plastic particles now found in our soil, water, and air, are building up in ecosystems and food chains, which matters for human health since we're likely ingesting them through food and water too. This review pulls together existing research on using living organisms like bacteria and enzymes (some genetically enhanced) to break down these plastics, offering a promising, nature-based cleanup approach rather than proposing new experiments of its own. The takeaway: while scientists are making real progress on biological solutions, more research is needed to scale these methods up for widespread real-world use.
Rethinking microplastic cleanup: sustainable bioremediation compared to conventional physical-chemical methods.
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Microplastics—tiny plastic bits smaller than 5mm—are piling up in our environment and often carry toxic chemicals, posing risks to both nature and human health. This review paper compares current cleanup methods, finding that while filtering and chemical treatments can remove up to 96% of these particles, they're expensive, energy-intensive, and can create new pollution problems. The exciting alternative: bacteria, fungi, and algae can naturally break down plastics (in some cases degrading 90% of certain plastic types), offering a cheaper, greener path to cleaning up the microplastic problem.
A critical review on remediation of microplastics using microalgae from aqueous system
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This review explores using microalgae -- tiny photosynthetic organisms -- as a natural way to remove microplastics from water. Microalgae can capture and clump microplastic particles together, making them easier to filter out. Since microplastics in water systems are a growing concern for human health through drinking water and seafood, biological removal methods like this could offer a more sustainable cleanup approach.
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