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61,005 resultsShowing papers similar to Hybrid Chitin-Coffee Ground Biochar Foam for Microplastic Adsorption
ClearHighly Efficient, Recyclable Microplastic Adsorption Enabled by Chitin Hydrogen Bond Network Rearrangement
Scientists developed a foam made from chitin, a natural material found in seafood shells, that can absorb over 400 milligrams of nano-sized microplastics per gram of material, even in saltwater. This recyclable, sustainable approach could help clean microplastics from ocean water, and the recovered plastic can be converted into useful products.
Exploring the Potential of Amino-Functionalized Zeolite Series/H3PO4-Biochar for Environmental Microplastic Removal
Scientists developed a new material made from modified zeolite and coffee-waste biochar that can remove polystyrene microplastics from water. The material successfully cleaned both drinking water and wastewater samples, offering a potential low-cost tool for filtering microplastics out of water supplies. Reducing microplastics in drinking water is directly relevant to lowering human exposure.
Chitosan‐assisted magnetic coconut shell biochar for polystyrene microplastic removal: Mechanism and reusability
Researchers created a recyclable magnetic biochar material from coconut shells, modified with chitosan, that removed up to 91% of polystyrene microplastics from water. The material maintained its effectiveness through five consecutive reuse cycles, and water treated with the biochar actually promoted better plant growth, demonstrating practical potential for environmental cleanup.
Revivable self-assembled supramolecular biomass fibrous framework for efficient microplastic removal
Scientists developed a sustainable material made from chitin and cellulose, two natural compounds, that can efficiently remove multiple types of microplastics from water. The material can be regenerated and reused multiple times without losing effectiveness, making it a practical tool for water cleanup. This type of affordable, eco-friendly filtration technology could help reduce human exposure to microplastics in drinking water.
Biodegradable sponges made from chitin-cellulose nanofibers for sustainable removal of microplastics from aquatic environment
Researchers developed a biodegradable sponge made from chitin and cellulose nanofibers that can remove up to 93% of microplastics from water. The sponge maintained strong performance after four reuse cycles and naturally biodegraded in soil environments. The study presents a sustainable, eco-friendly approach to cleaning microplastic contamination from aquatic ecosystems without introducing additional persistent pollutants.
Removal of nano-sized polystyrene plastic from aqueous solutions using untreated coffee grounds
Researchers tested untreated coffee grounds as a low-cost biosorbent for removing nanoplastics from water, finding up to 74% removal efficiency across a wide pH range within 40 minutes, with electrostatic interactions and hydrogen bonding between coffee ground surface groups and the polystyrene particles driving adsorption.
Removal of polystyrene nanosphere and fragment from aqueous solutions by magnetic biochar derived from crab shell
Researchers developed a magnetic biochar derived from crab shells (M-CSBC) and demonstrated its effectiveness for removing both spherical polystyrene nanoplastics and fragmental polystyrene microplastics from water. The material achieved maximum removal capacities of 90.09 mg/g for nanoplastics and 14.47 g/g for microplastics, following a Langmuir adsorption model, with performance influenced by pH and salinity.
A novel polymer coated magnetic activated biochar-zeolite composite for adsorption of polystyrene microplastics: Synthesis, characterization, adsorption and regeneration performance
Researchers developed a new magnetic composite material made from biochar, zeolite, and polymer coatings that can effectively capture microplastics from water. The material removed over 90 percent of test microplastics and could be regenerated and reused multiple times. The study presents a promising, practical approach for filtering microplastics out of contaminated water using materials that can be magnetically recovered.
Efficient removal of polystyrene microplastics from seawater using a chitosan-activated carbon nanocomposite: Preparation of the adsorbent and optimisation of removal methods
Scientists created a new material that can remove up to 99% of tiny plastic particles (called microplastics) from seawater by mixing two natural substances - chitosan (from shellfish) and activated carbon. This filtering material can be cleaned and reused at least five times, making it a promising tool for removing plastic pollution from our oceans. Since microplastics can enter our food chain through seafood and sea salt, better ways to clean them from seawater could help protect human health.
Biodegradable and re-usable sponge materials made from chitin for efficient removal of microplastics
Researchers developed biodegradable sponges made from chitin, a natural material, that can effectively remove tiny microplastic particles smaller than 3 micrometers from water. The sponges achieved removal rates of up to 92% and could be reused for multiple cycles while remaining safe for aquatic organisms. This green approach offers a promising, environmentally friendly method for cleaning microplastics from water systems.
The use of chitosan for water purification from microplastics
Researchers investigated chitosan as a sorbent for removing microplastics from water, analyzing its physicochemical properties and proposing an optimized purification method based on chitosan's sorption characteristics.
Biochar-based adsorption technologies for microplastic remediation in aquatic ecosystems
This review examines the use of biochar, a carbon-rich material made from organic waste, as a tool for removing microplastics from water. Biochar can effectively adsorb microplastic particles due to its porous structure and surface chemistry, and it can be produced cheaply from agricultural waste. The technology shows promise as an affordable and sustainable approach to reducing microplastic contamination in waterways, though challenges remain in scaling it up for real-world water treatment.
Nature-derived hydrogel for microplastic removal
Scientists developed a nature-based hydrogel made from chitin and lignin that can remove nanoplastics from wastewater with very high efficiency, absorbing up to 1,791 milligrams of plastic per gram of material. This sustainable, reusable filter could help reduce the amount of tiny plastic particles that reach drinking water and ultimately the human body.
Enhanced removal of small microplastics (1–5 μm) from secondary-treated wastewater using Spent Coffee Grounds biochar: Application of flow cytometry
Researchers found that biochar made from spent coffee grounds — a waste product — can remove nearly 100% of microplastics 2 micrometers and larger from treated wastewater, and about 49% of the smallest 1-micrometer particles. This low-cost, sustainable filter material significantly outperformed traditional sand filters, with fewer than 1.5% of trapped particles escaping during backwashing.
A Chitosan Nanofiber Sponge for Oyster-Inspired Filtration of Microplastics
An ultralight chitosan nanofiber sponge was developed as a filtration material for removing microplastics from water, inspired by oyster filtration biology, and demonstrated high removal efficiency for polystyrene microplastics in lab tests while being biodegradable and made from renewable chitosan feedstock.
Eco-friendly hydrophobic ZIF-8/sodium alginate monolithic adsorbent: An efficient trap for microplastics in the aqueous environment
Scientists created an eco-friendly sponge-like material made from a metal-organic framework (ZIF-8) and seaweed-based sodium alginate that can trap microplastics from water. The material removed up to 594 milligrams of microplastics per gram of adsorbent and worked well even in real-world water samples like tap water, river water, and seawater. This type of practical, reusable filter material could help reduce the amount of microplastics reaching drinking water supplies.
One-step synthesis of magnetic biochar via co-pyrolysis of walnut shells and Fe-rich mine tails for adsorption capacity improvement of polystyrene sulfonate microplastics: Role of microplastic size
Scientists created a magnetic biochar from walnut shells and iron-rich mining waste that effectively absorbs polystyrene microplastics from water. The iron-enhanced biochar performed about ten times better than untreated biochar, with electrostatic interactions and pore-filling being the main capture mechanisms. This low-cost material made from waste products could be a practical tool for removing microplastics from water, potentially reducing human exposure through drinking water.
Adsorption and thermal degradation of microplastics from aqueous solutions by Mg/Zn modified magnetic biochars
Researchers developed magnesium- and zinc-modified magnetic biochars that achieved over 94% removal efficiency for polystyrene microplastics from water, with performance enhanced by the metal modifications. The modified biochars also showed effectiveness in thermally degrading the captured microplastics, offering a potential two-step approach for microplastic removal and destruction in water treatment.
Microplastic pollutants in water: A comprehensive review on their remediation by adsorption using various adsorbents
This review covers the different materials scientists are developing to filter microplastics out of water, including biochar, activated carbon, sponges, carbon nanotubes, and newer hybrid materials. Each material has trade-offs in terms of cost, effectiveness, and environmental impact, but combining different approaches shows the most promise. The research is important because better water filtration methods could directly reduce the amount of microplastics people consume through drinking water.
Utilizing Coffee Husk Biochar as an Effective Adsorbent for Ammonium Removal in Groundwater
Researchers evaluated coffee husk biochar as an adsorbent for removing ammonium from groundwater, finding strong adsorption performance at low cost. The study is focused on water treatment chemistry and is not directly related to microplastic research.
Preparation and application of metal-modified biochar in the purification of micro-polystyrene polluted aqueous environment
Researchers developed iron-modified biochar, a charcoal-like material, that can remove over 96% of polystyrene microplastics from water under controlled lab conditions. The material worked well in tap water and lake water but was less effective in heavily polluted water with high levels of organic matter. This type of low-cost water treatment technology could help reduce the amount of microplastics in drinking water, though more work is needed to apply it at larger scales.
Removal of polystyrene microplastics using biochar-based continuous flow fixed-bed column
Scientists built a water filtration column using biochar made from banana peels that removed up to 92% of polystyrene microplastics from flowing water. The system works through a combination of adsorption, filtration, and the natural water-repelling interaction between the biochar and plastic particles. This low-cost approach using agricultural waste could offer a practical solution for removing microplastics from water in communities that lack advanced treatment infrastructure.
Hierarchically porous and anisotropic biochar from fast-growing balsa and paulownia woods for effective microplastic removal
Scientists converted fast-growing balsa and paulownia wood into a specially structured biochar — a carbon-rich material made by heating plant matter without oxygen — that demonstrated exceptional ability to capture polystyrene microplastics from water, achieving an adsorption capacity of 533 mg per gram while retaining 88% efficiency after 30 reuse cycles. The material also performed well on actual fragments from plastic bags and tea bags, and worked across a wide range of water types. Biochar made from abundant, fast-growing wood offers a scalable, sustainable, and recyclable option for microplastic removal in water treatment.
Innovative Strategies for Microplastic Mitigation in Wastewater
This book chapter proposes the use of biochar-based composite materials as innovative filter media for removing microplastics from wastewater, describing the adsorption mechanisms by which biochar captures plastic particles and the potential to integrate this approach into existing treatment infrastructure.