We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
The carrier effect mechanism of butachlor in water by three typical microplastics
AI summary Read the abstract
Researchers investigated the adsorption mechanisms of the herbicide butachlor (BUT) onto three types of microplastics — polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC) — under varying pH, salt ion concentration, and aging conditions in water. The study elucidated the carrier effect of microplastics in transporting this widely used agricultural chemical through aquatic environments.
Butachlor (BUT) is a widely used herbicide that can cause environmental problems when used excessively. BUT has been found to exist in large quantities in the water environment so far. As an agricultural pre-emergent herbicide, BUT can enter the water environment through multiple channels and cause pollution. This study investigated the mechanism of three types of microplastics (MPs): polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC) to remove BUT from water. The adsorption behavior between MPs and BUT under different factors, namely pH, salt ion concentration, and aging, was investigated. This study further investigated the desorption and aging of BUT-adsorbed MPs. In this research, the adsorption capacity of BUT by PE, PP, and PVC are 13.65 μg/g, 14.82 μg/g, and 18.88 μg/g, respectively, and the order of carrier effect was: PVC>PP>PE. Experiments show that MPs have low adsorption performance on the microgram level for BUT. The adsorption behavior of PE, PP, and PVC on BUT conformed to pseudo-second-order kinetics, indicating the presence of physical and chemical adsorption. The Langmuir isotherm model fits well, indicating that the adsorption is a single-layer adsorption process. The pH value causes slight fluctuations in the overall carrier effect. Low concentration of salt ions can inhibit the carrier effect, and high concentration will promote the interaction between MPs and BUT. Aging experiments show that the carrier effect of the original materials was higher than the adsorption capacity of hydrogen peroxide and MPs after acid aging, and acid aging can cause the adsorption capacity to drop significantly.
More Papers Like This
Sorption of pesticides onto polyethylene microplastics in different aqueous matrices
AI summary Read the abstract
This thesis examined how pesticides adsorb onto polyethylene microplastics in different aqueous matrices, finding that water chemistry significantly affects the binding behavior and potential for microplastics to carry agricultural chemicals.
Review and analysis of atrazine adsorption on different microplastics in aqueous solution.
AI summary Read the abstract
This review analyzed atrazine adsorption onto different microplastic types in aqueous solution, examining how varying environmental conditions and physicochemical properties of PE and other MP matrices govern the sorption and transport of this ubiquitous herbicide when MPs serve as contaminant vectors in aquatic systems.
Adsorption behavior and mechanism of different types of (aged) microplastics for napropamide in soils
AI summary Read the abstract
Researchers studied how different types of microplastics, both conventional and biodegradable, affect the soil absorption of the herbicide napropamide. They found that aged microplastics had significantly different adsorption properties than new ones, and that the presence of microplastics generally altered how the herbicide behaved in soil. The findings suggest that microplastic pollution may change how agricultural chemicals move through and persist in farmland.
Behavior and mechanism of atrazine adsorption on pristine and aged microplastics in the aquatic environment: Kinetic and thermodynamic studies
AI summary Read the abstract
Researchers systematically explored how the pesticide atrazine adsorbs onto both pristine and aged microplastics in aquatic environments. The study found that aged microplastics had higher adsorption capacities than pristine ones, with the aging process and pH significantly affecting surface charge and adsorption behavior, suggesting that weathered microplastics may carry greater loads of chemical contaminants.
Strong sorption of two fungicides onto biodegradable microplastics with emphasis on the negligible role of environmental factors
AI summary Read the abstract
Researchers found strong sorption of two fungicides onto biodegradable microplastics, with partition coefficients largely unaffected by environmental variables such as pH, ionic strength, and temperature, suggesting that biodegradable plastic alternatives may still facilitate pesticide transport in agricultural and aquatic environments.
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.