We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Presence of polystyrene microplastics in Cd contaminated water promotes Cd removal by nano zero-valent iron and ryegrass (Lolium Perenne L.)
AI summary Read the abstract
Researchers investigated how polystyrene microplastics affect cadmium removal from water by ryegrass combined with nano zero-valent iron variants, finding that microplastics facilitated uptake of both microplastics and cadmium into plant roots in some treatment combinations. Plants that internalized microplastics contained more cadmium across all nano zero-valent iron treatments, suggesting microplastics can enhance cadmium accumulation in phytoremediation systems.
Microplastics, as emerging contaminants, have attracted widespread attention for their increasing detection frequency in aquatic environment. It has been reported that microplastics may co-presence with heavy metals in water, which might have impact on heavy metals removal in water. Furthermore, the effects of microplastics on the co-remediation efficiency of plants with engineered nanomaterials are ambiguous. To this end, this study was dedicated to unveil the intrinsic effects of polystyrene microplastics (PSMPs) on the cadmium (Cd) removal efficiency by co-remediation of ryegrass (Lolium perenne L.) and three engineered nanomaterials, respectively were nano-zerovalent iron (nZVI), carboxymethylcellulose-modified-nZVI (C-nZVI) and sulfidated nZVI (S-nZVI). Significant changes were observed in Cd content, plant biomass, chlorophyll b and antioxidant enzymes. It was surprising to find that with the treatment of nZVI or C-nZVI, polystyrene microplastics would enter plants roots, and these plants were found to contain more Cd among all series. Accordingly, four possible mechanisms were proposed to explain why plants that observed the internalization of PSMPs contained more Cd. This work reveals the impact of coexisting microplastics in water on Cd remediation efficiency and provides new insights into the entry of polystyrene microplastics into plant roots.
More Papers Like This
Carboxymethylcellulose-modified nano-zero-valent iron (C-nZVI) promotes ryegrass phytoremediation of cadmium in sediments co-contaminated with multiple microplastics: Mechanisms revealed by PLS-PM
AI summary Read the abstract
A study found that applying carboxymethylcellulose-modified nano-zero-valent iron (C-nZVI) to soils co-contaminated with cadmium and six types of microplastics significantly boosted ryegrass growth and cadmium uptake while stabilising the metal in a less bioavailable form in the sediment. The results suggest C-nZVI could help rehabilitate agricultural soils facing the increasingly common problem of simultaneous microplastic and heavy-metal pollution.
Modified nano zero-valent iron reduce toxicity of polystyrene microplastics to ryegrass (Lolium Perenne L.)
AI summary Read the abstract
Researchers found that modified nano zero-valent iron particles can reduce the harmful effects of polystyrene microplastics on ryegrass growth. The microplastics alone caused significant declines in shoot weight and root length, but adding sulfidated or cellulose-modified iron nanoparticles to the soil helped alleviate these toxic effects. The study suggests that engineered nanomaterials could serve as a potential remediation strategy for microplastic-contaminated soils.
Low phosphorous and polyethylene microplastics synergistically increase Cd uptake in Lolium rigidum: Insights into underlying mechanisms
AI summary Read the abstract
Researchers found that low phosphorus availability and polyethylene microplastics work together to significantly increase cadmium uptake in ryegrass. The study compared two ryegrass genotypes with different sensitivities to microplastic stress and identified mechanisms involving changes in root structure and soil chemistry. The findings suggest that microplastic-contaminated farmlands with nutrient-poor soils may pose heightened risks for heavy metal accumulation in crops.
Improved Cadmium Removal Induced by Interaction of Nanoscale Zero-Valent Iron and Microplastics Debris
AI summary Read the abstract
Researchers investigated how PVC microplastics interact with nanoscale zero-valent iron used to remove cadmium from contaminated water. The presence of microplastics actually enhanced cadmium removal, likely due to adsorption on the plastic surface. These findings are relevant because PVC production uses cadmium compounds, meaning both pollutants may co-occur in real environments.
Effect of cadmium on polystyrene transport in parsley roots planted in a split-root system and assessment of the combined toxic effects
AI summary Read the abstract
Researchers used a split-root system to study how cadmium affects the movement of polystyrene micro and nanoplastics in parsley plants. They found that plastic nanoparticles traveled through the plant's internal transport system from contaminated roots to clean roots, but cadmium reduced this movement by changing the plastics' surface charge. The study shows that in contaminated soil, heavy metals and microplastics interact in complex ways that affect how much plastic ends up in edible crops.
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.