We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Algae as Nature's Filters: Micro- and Macroalgal Solutions for Nutrient and Contaminant Removal in Aquatic Systems
Original title: Algae as Nature’s Filters: Micro- and Macroalgal Solutions for Nutrient and Contaminant Removal in Aquatic Systems
AI summary Read the abstract
This review pulls together research showing that algae — from tiny microalgae to seaweed — can act like natural water filters, soaking up excess nutrients, heavy metals, drugs, and even microplastics from polluted water. This matters because cleaner waterways mean fewer contaminants working their way into the fish we eat and the water we drink, and algae-based cleanup could offer a cheaper, eco-friendly alternative to conventional treatment systems. That said, the technology still faces real hurdles — like scaling it up and safely disposing of the pollutant-loaded algae afterward — before it becomes widely usable.
Algae are emerging not merely as passive nature-based engineered bio-platforms, but as dynamic bio-circular platforms capable of simultaneously removing complex contaminant mixtures while generating vaporizable biomass within integrated water-resource systems. Freshwater and marine micro- and macroalgae possess diverse physiological and biochemical traits that enable them to assimilate excess nitrogen and phosphorus, adsorb and accumulate metals, bind organic pollutants, and immobilize emerging contaminants such as pharmaceuticals, hydrocarbons, and microplastics. This review synthesizes current knowledge on algal remediation across ecosystems, highlighting species‑specific mechanisms including nutrient assimilation, biosorption, bioaccumulation, enzymatic biotransformation, extracellular polymeric substance production, and physical interception of suspended particles. Freshwater species such as Chlorella, Scenedesmus, Oedogonium, and Cladophora demonstrate high nutrient uptake rates and strong capacity to remove metals and organic contaminants in wastewater treatment and agricultural runoff systems. Marine taxa including Nannochloropsis, Tetraselmis, Ulva, Gracilaria, and Sargassum exhibit exceptional tolerance to salinity and complex pollutant mixtures, in context-dependent performance variability, making them effective in coastal remediation, aquaculture effluent treatment, and biosorption-based applications. Case studies from municipal wastewater facilities, constructed wetlands, integrated multi-trophic aquaculture, and coastal bioremediation platforms demonstrate high removal efficiencies and the potential for biomass valorization within circular bioeconomy frameworks. Despite these advances, challenges remain related to environmental variability, biological contamination, scalability, regulatory constraints, and the safe management of pollutant‑laden biomass. Future progress will depend on advances in strain selection, system engineering, microbial consortia design, digital monitoring, and supportive policy frameworks. Overall, algae represent a robust, adaptable, and ecologically compatible approach to restoring water quality in freshwater and marine ecosystems increasingly affected by anthropogenic pressures.
More Papers Like This
A critical review on remediation of microplastics using microalgae from aqueous system
AI summary Read the abstract
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.
Nature-based wastewater solutions: a comprehensive review of algae–wetland integration for nutrient and microplastics removal
AI summary Read the abstract
This review pulls together existing research on a natural, low-energy water treatment system that combines algae and wetland plants to filter out excess nutrients and microplastics from wastewater—the same tiny plastic particles that have been found in human tissues and organs. Since our drinking water and food chains are increasingly contaminated with microplastics, this eco-friendly approach could offer a cheaper, greener alternative to conventional treatment plants, though researchers note it still needs refinement before it can be used on a large scale.
Microalgal Bioremediation of Microplastics: Current Advances, Challenges and Environmental Applications
AI summary Read the abstract
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.
Sustainable Algal Nanomaterials for Microplastics and Lanthanide Remediation
AI summary Read the abstract
Scientists are exploring how algae can be used to create tiny, eco-friendly particles (called nanoparticles) that soak up pollutants like microplastics and certain metals from water and soil. This review paper summarizes existing research on how these algae-based particles are made and how well they clean up environmental contaminants, offering a greener alternative to chemical-based cleanup methods. Since microplastics and heavy metals can end up in our food and water, finding sustainable ways to remove them could help reduce our long-term exposure to these harmful substances.
Traversing the potential of phytoremediation and phycoremediation as pioneering technologies in microplastic mitigation – A critical review
AI summary Read the abstract
This review examines how plants and algae can be used as natural tools to capture and remove microplastics from contaminated environments. Researchers analyzed the mechanisms by which plant roots trap microplastics in soil and how algae bind to and immobilize plastic particles in water. The study suggests that these biological remediation approaches offer sustainable, low-cost alternatives to conventional cleanup methods, though further research is needed to scale them up.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.