A technique to fractionate dissolved organic materials (DOMs) from low DOM water (<5mg/l) was developed by using triple columns of DAX-8 adsorption resin, one column of AG-MP-50 cationic resin, and another column of WA 10 weak anionic resin in sequence. The procedure was then applied to fractionate water samples obtained at various sampling locations throughout two surface water treatment plants (WTPs) in central New Jersey to study its effectiveness, DOM occurrence, and variation along treatment units. The treatment plants utilize different treatment methods, hence producing variability in DOM fractions suitable for examining the procedure's effectiveness. This procedure was compared with current fractionation protocols and proved to be accurate in fractionation of low DOM water.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0304-3894(03)00133-x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Microscale Spatiotemporal Variation of Reactive Oxygen Species in the Charosphere: Underlying Formation Mechanism and Their Role in CO Emission.
Environ Sci Technol
January 2025
College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.
Charosphere, a highly active zone between biochar and surrounding soil, is widely present in agricultural and wildfire-affected soils, yet whether reactive oxygen species (ROS) are produced within the charosphere remains unclear. Herein, the production and spatiotemporal evolution of charosphere ROS were explored. In situ ROS capture visualized a gradual decrease in ROS production with increasing distance from the biochar/soil interface.
View Article and Find Full Text PDFSalt-in-presalt electrolyte solutions for high-potential non-aqueous sodium metal batteries.
Nat Nanotechnol
January 2025
Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, USA.
Room-temperature non-aqueous sodium metal batteries are viable candidates for cost-effective and safe electrochemical energy storage. However, they show low specific energy and poor cycle life as the use of conventional organic-based non-aqueous electrolyte solutions enables the formation of interphases that cannot prevent degradations at the positive and negative electrodes. Here, to promote the formation of inorganic NaF-rich interphases on both negative and positive electrodes, we propose the salt-in-presalt (SIPS) electrolyte formulation strategy.
View Article and Find Full Text PDFImprint of incomplete combustion processes on the water column of the anthropogenic-pressured Baltic Sea.
Sci Total Environ
January 2025
Leibniz Institute for Baltic Sea Research Warnemünde (IOW), Rostock, Germany.
This study evaluates the distribution and sources of thermogenic organic matter in the Baltic Sea water column, focusing on polycyclic aromatic hydrocarbons (PAH), dissolved black carbon (DBC), and the imprint of thermogenic organic matter on the dissolved organic matter (DOM) pool. The spatial patterns and complex interactions between land-based and atmospheric sources were assessed from Kiel Bay to Pomeranian Bight within the water column with the combined targeted and untargeted approaches. The findings emphasize the significant influence of terrestrial inputs from the Oder River and autochthonous production composing DOM.
View Article and Find Full Text PDFAssessing the photochemical mineralisation of dissolved organic carbon in lakes.
Sci Total Environ
January 2025
Dipartimento di Chimica, Università di Torino, Via Pietro Giuria 5, 10125 Torino, Italy. Electronic address:
Photochemical mineralisation is an abiotic process by which the organic matter in natural waters, which is mostly dissolved, is eventually transformed into CO by the action of sunlight. The process has important implications for global C cycling, the penetration of sunlight into the water column, photochemical reactions, and microbial processes. Here we applied an approximated photochemical model to assess the extent of CO photogeneration by mineralisation of dissolved organic matter in lakes located between 60°S and 60°N latitude.
View Article and Find Full Text PDFCombined UV/HO and biochar processes for enhanced removal of contaminants of emerging concern in dry wells.
Water Res
January 2025
Department of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305, USA. Electronic address:
Dry wells are neighborhood-scale stormwater infiltration systems increasingly used in drought-prone areas for stormwater capture and groundwater recharge. These systems bypass the low permeability surface soil to maximize infiltration rates. However, hydrophilic contaminants of emerging concern (CECs) in urban runoff pose potential groundwater contamination risks.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!