Sorption of two herbicides, fluridone (FLUN) and norflurazon (NORO), by two types of biochars, whole sediment, and various soil/sediment organic matter (OM) fractions including nonhydrolyzable carbon (NHC), black carbon (BC) and humic acid (HA) was examined. The single-point organic carbon (OC)-normalized distribution coefficients (K(OC)) of FLUN and NORO at low solution concentration (C(e)=0.01S(W), solubility) for HA, NHC, and BC were about 3, 14, and 24 times and 3, 16, and 36 times larger than their bulk sediments, respectively, indicating the importance of different OM fractions in herbicide sorption. This study revealed that aliphatic moieties of the hydrothermal biochars and aromatic moieties of NHC samples, respectively, were possibly responsible for herbicide sorption. The hydrothermal biochar and condensed OM (i.e., NHC and BC) showed relatively high or similar herbicide sorption efficiency compared to the thermal biochar, suggesting that the hydrothermal biochar may serve as an amendment for minimizing off-site herbicide movement.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.envpol.2011.12.015 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Preparation and characterization of SPE column with smart green molecularly imprinted polymers materials for selective determination of S-metolachlor herbicide.
Sci Rep
January 2025
Department of Process Engineering and Technology of Polymer and Carbon Materials, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, Wrocław, 50-370, Poland.
The presence of traces of herbicides in ground and surface waters can have adverse impacts on humans and the environment. Therefore, developing a highly selective and reusable adsorbent for monitoring water quality has become important. This article describes smart green molecularly imprinted polymers (MIPs) as selective sorbents of S-metolachlor herbicide for solid phase extraction (SPE).
View Article and Find Full Text PDFNanotubular clay minerals for simultaneous sorption of pesticides and PFCAs: a molecular simulation study.
Integr Environ Assess Manag
January 2025
Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas (CERTH), Maroussi, Greece.
Perfluoroalkyl and polyfluoroalkyl substances (PFAS) and herbicides are important persistent contaminants that require specific management. A variety of herbicides is stored in fluorinated containers in the form of aquatic solutions. In such environments, the simultaneous release of PFAS and herbicides takes place.
View Article and Find Full Text PDFArtificial neural networks to estimate the sorption and desorption of the herbicide linuron in Brazilian soils.
Environ Pollut
January 2025
Departamento de Agronomia e Ciências Florestais, Universidade Federal Rural do Semi-Árido, Mossoró, AV. Francisco Mota, 572 - Pres. Costa E Silva, RN, Mossoró, 59625-900, Rio Grande do Norte, Brazil. Electronic address:
Generally, herbicides used in Brazil follow manufacturer's recommendations, which often do not consider soil attributes. Statistical models that include the physicochemical properties of the soil involved in herbicide retention processes could enable greater precision in herbicide dose decision-making. This study evaluated the potential of artificial neural networks (ANNs) to predict the sorption and desorption of the herbicide linuron in Brazilian soils with different attributes.
View Article and Find Full Text PDFMechanisms of interactions and the significance of different colloidal structures in the vertical transport of glyphosate in soils with contrasting mineralogies.
Chemosphere
February 2025
Departamento de Química, Universidade Federal do Paraná, 81531-980, Curitiba, PR, Brazil.
Soil is regarded as a natural repository for strongly adsorbed pollutants since glyphosate (GLY) is preferentially adsorbed by the inorganic fraction of the soil, which may greatly limits its leaching. In this way, understanding how clay mineralogy influences the sorption and transport processes of glyphosate in soils with different mineralogical characteristics is highly relevant. In this work, two clay mineralogy contrasting soils were used to evaluate GLY retention: a Oxisol (OX) with high levels of iron oxides (amorphous and crystalline) and a Inceptisol (IN) with a predominance of kaolinite.
View Article and Find Full Text PDFAquatic plants mitigate pollution by enhancing the degradation of atrazine and diuron present in agricultural runoff.
Int J Phytoremediation
December 2024
Department of Ecology, Jinan University, Guangzhou, China.
Vegetated ditches have been demonstrated to be an effective method for pollutant remediation. This study assesses the removal potential and pathways for herbicide runoff pollution utilizing , , , and ditches. Resultes show these vegetated ditches significantly outperform unvegetated ones in removing atrazine and diuron during runoff events ( < 0.
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!