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Modeling dissolved organic carbon export from water supply catchments in the northeastern United States.
Sci Total Environ
January 2025
695 Park Avenue, The Institute for Sustainable Cities, Hunter College of the City University of New York, New York, NY 10065, United States of America. Electronic address:
Natural organic matter (NOM) in rivers is an important energy source to sustain aquatic ecosystem health. However, in surface water supply systems where chlorination is often used for disinfection, NOM is also a precursor for the carcinogenic and mutagenic disinfection byproducts such as trihalomethanes and haloacetic acids. Effective management of NOM in rivers to maintain both aquatic ecosystem functions and high-quality water supply requires better understanding of the NOM transport patterns.
View Article and Find Full Text PDFMagnesium Bicarbonate-Walnut Shell Dual-Template Synthesis of Multifunctional Layered Porous Carbon for Enhanced Adsorption of Aqueous Chlorinated Organic Compounds.
Int J Mol Sci
November 2024
School of Chemical Sciences & Technology, School of Materials and Energy, Institute of Frontier Technologies in Water Treatment, National Center for International Research on Photoelectric and Energy Materials, Yunnan University, Kunming 650091, China.
Chloride ions readily react with organic matter and other ions, resulting in the formation of disinfection by-products (DBPs) that exhibit heightened levels of toxicity, carcinogenicity, and mutagenicity. This study creatively employed waste walnut shells as self-templates and low-cost magnesium bicarbonate as a rigid template to successfully synthesize multifunctional porous carbon derived from walnut shells. Employing a series of characterization techniques, it was ascertained that the porous carbon material (WSC/Mg) synthesized via the dual-template method exhibited a distinct layered microscopic surface structure, with a predominance of C and O elements on the surface.
View Article and Find Full Text PDFThe Trend in Mitigation Strategies of 3-Monochloropropane-1,2-diol and Glycidyl Esters in Edible Vegetable Oils: Today and Tomorrow.
Food Technol Biotechnol
September 2024
Manisa Celal Bayar University, Engineering Faculty, Department of Food Engineering, Prof. Dr. Ilhan Varank Campus, 45030 Manisa, Türkiye.
Article Synopsis
- 3-MCPD and its esters, which can cause cancer and genetic damage, are harmful contaminants found in refined oils and fatty foods due to high-temperature processing.
- Initially discovered in 1978 in flavor-enhancing proteins, these substances form during the deodorization phase of oil refining, with glycidol also identified as a possible carcinogen.
- The review covers how these contaminants affect human health, their formation mechanisms, detection methods, and the latest strategies to minimize their presence in food production.
Spatial pattern and compositional distribution of organochlorine pesticides in the black soil region of Shenyang.
Environ Res
December 2024
Ministry of Education, Shenyang Ligong University, Shenyang, 110159, China.
Organochlorine pesticides (OCPs) are persistent organic pollutants (POPs) prevalent in soils with carcinogenic, teratogenic and mutagenic hazards that are commonly found in soils and remain in the environment even though they have been banned. In order to fill the gap of fewer studies after the ban, soil samples were collected from 308 agricultural fields of cash crops and grain crops in the black soil area of Shenyang City (Liaozhong District, Faku County, Xinmin City and Kangping County) in this study. The aim was to determine, the use and distribution characteristics of OCPs in agricultural soils in the black soil region of Shenyang City.
View Article and Find Full Text PDFElimination of mutagenic contaminants from water using cellulose bearing ferrous-phthalocyanine.
Genes Environ
October 2024
Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8530, Japan.
Background: We previously investigated methods for separating mutagenic contaminants from aqueous solutions using cellulose-bearing covalently bound trisulfo-Cu-phthalocyanine (blue cotton and blue rayon). Mutagenic contaminants with three or more fused aromatic rings in their structures were adsorbed onto blue cotton and rayon. Since Cu-phthalocyanine is considered an unsuitable absorption ligand for byproducts of water chlorination, such as 3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone (Mutagen X or MX), we investigated the development of a new material for the elimination of MX from aqueous solvents.
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