We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Application of Zn/Al layered double hydroxides for the removal of nano-scale plastic debris from aqueous systems
AI summary Read the abstract
Researchers demonstrated that zinc-aluminum layered double hydroxide (LDH) can efficiently adsorb nanoscale plastic debris from freshwater, achieving removal capacities exceeding 160 mg/g in deionized water, though performance dropped significantly under alkaline conditions and in the presence of competing ions like sulfate and phosphate — establishing LDH as a promising but condition-sensitive adsorbent for nanoplastic remediation.
Nano-scale plastic debris (NPDs) are emerging as potential contaminants as they can be easily ingested by aquatic organisms and carry many pollutants in the environment. This study is aimed to remove NPDs from aqueous environment for the first time by using eco-friendly adsorption techniques. Initially, the interaction between NPDs and synthesized Zn-Al layered double hydroxide (LDH) was confirmed by pH titration of Zn-Al LDH against NPDs at varying mass ratio (50:1 to 50:7) and FTIR analysis for both before and after 2 h of contact time. Fast removal was observed in deionized water and synthetic freshwater with maximum sorption capacity (Q) of 164.49 mg/g,162.62 mg/g, respectively, according to Sips isotherm. Whereas, removal was least in synthetic hard water having a Q value of 53 mg/g. For 2 mM concentration of SO and PO, the adsorption capacity significantly decreased to 2%. The removal efficiency was found 100 % at pH 4, while at pH 9, it reached 37 % due to increased competitive binding and destabilization of LDH under alkaline conditions. The process of sorption was spontaneous in different types of water studied. The study reveals that Zn-Al LDH can be used as potential adsorbent for the removal of NPDs from freshwater systems.
More Papers Like This
Effective removal of nanoplastics from water by cellulose/MgAl layered double hydroxides composite beads
AI summary Read the abstract
Researchers developed cellulose and layered double hydroxide composite beads to remove nanoplastics from water. The material achieved a maximum removal capacity of 6.08 mg/g through mechanisms involving pore diffusion, hydrogen bonding, and electrostatic interactions, suggesting it could be a promising adsorbent for micro- and nanoplastic removal from water.
Removal of polystyrene nanoparticles using MgAl layered double hydroxide membranes synthesized on aluminum plates
AI summary Read the abstract
Researchers synthesized magnesium-aluminum layered double hydroxide (LDH) membranes on aluminum plates in just 10 minutes and tested them for removing nanoplastic particles from water, finding strong adsorption of both 100 nm and 1 micrometer polystyrene nanoparticles. The easy-to-make, sheet-like membranes offer a simple and scalable approach to filtering nanoplastics from drinking water and other water sources.
Phase transition of Mg/Al-flocs to Mg/Al-layered double hydroxides during flocculation and polystyrene nanoplastics removal
AI summary Read the abstract
Researchers investigated how magnesium-aluminum layered double hydroxide flocs remove polystyrene nanoplastics from water, finding that electrostatic adsorption and intermolecular forces drive capture efficiency above 90%, with pH-dependent crystal formation playing a key role in the removal mechanism.
Microplastics and nanoplastics in water: Improving removal in wastewater treatment plants with alternative coagulants
AI summary Read the abstract
Laboratory tests showed that conventional aluminum sulfate (alum) coagulant becomes much less effective at removing micro- and nanoplastics from water at pH above 7.8—a common condition in municipal wastewater—but switching to aluminum chlorohydrate largely restores removal efficiency. This matters because wastewater treatment plants are a critical barrier preventing microplastics from entering rivers and oceans, and many currently use alum. The study gives water utilities a practical, drop-in solution to significantly improve microplastic capture under challenging water chemistry.
Engineering 3D graphene-like carbon-assembled layered double oxide for efficient microplastic removal in a wide pH range
AI summary Read the abstract
Researchers engineered a 3D graphene-like carbon layered double oxide material that effectively removes microplastics from water across a wide pH range, making it suitable for treating both acidic and alkaline wastewater effluents.
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.