Publications by authors named "J P Croue"
Article Synopsis
- Nanoplastics, especially polystyrene nanoplastics (approximately 200 nm), are widespread in ecosystems, leading to concerns about their lasting presence and movement in the environment.
- The study examined how different types of Natural Organic Matter (NOM) from various water sources affect the stability and aggregation of these nanoplastics under varying temperatures and electrolyte conditions.
- Results showed that biopolymers inhibited nanoplastic aggregation more effectively than hydrophobic acids, with temperature affecting their behavior dynamically, providing crucial insights for understanding nanoplastic interactions in ecosystems.
Article Synopsis
- - The study examined how different types of dissolved organic matter (DOM) affect the aggregation of rough, raspberry-type polystyrene nanoparticles (PS-NPs) in various salt solutions through advanced light scattering techniques.
- - Results indicated that the stability of PS-NPs is significantly influenced by the characteristics of the DOM and the type of salts, with calcium salts leading to faster aggregation compared to sodium salts, and biopolymers having a stronger attraction to PS-NPs than other DOM types.
- - The findings suggest that using coagulation processes is an effective method for removing PS-NPs, with different coagulants showing varying effectiveness depending on the presence of DOM; specifically, aluminum-based coagulants worked better in pure solutions, while polyal
Recent regulatory actions aim to limit per- and polyfluoroalkyl substances (PFAS) concentrations in drinking water and wastewaters. Regenerable anion exchange resin (AER) is an effective separation process to remove PFAS from water but will require PFAS post-treatment of the regeneration wastestream. Electrocatalytic (EC) processes using chemically boron-doped diamond electrodes, stable in a wide range of chemical compositions show potential to defluorinate PFOA in drinking water and wastewater treatments.
View Article and Find Full Text PDFAdsorbable organic halogen (AOX) represents the total amount of halogenated organics that can be adsorbed on activated carbon (AC) from samples. Measuring AOX is crucial for assessing water quality, and any erroneous estimation of AOX risks misleading decision-makers. This study demonstrated two overlooked factors that may introduce biases to AOX measurement.
View Article and Find Full Text PDFHalogenated BPA (XBPA) forms resulting from water chlorination can lead to increased toxicity and different biological effects. While previous studies have reported the occurrence of different XBPAs, analytical limitation have hindered the analysis and differentiation of the many potential isomeric forms. Using online solid-phase extraction - liquid chromatography - ion-mobility - high-resolution mass spectrometry (OSPE-LC-IM-HRMS), we demonstrated a rapid analysis method for the analysis of XBPA forms after water chlorination, with a total analysis time of less than 10 min including extraction and concentration and low detection limits (∼5-80 ng/L range).
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