The Adsorption and Degradation Pathways of Pollutants in Agricultural Soil

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Agricultural Soils".

Deadline for manuscript submissions: 15 March 2026 | Viewed by 873

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Instituto de Recursos Naturales y Agrobiología de Sevilla, Consejo Superior de Investigaciones Científicas (IRNAS-CSIC), Reina Mercedes Av. 10, 41012 Seville, Spain
Interests: soil amendments; biochar; pyrolysis; heavy metals; soil pollution; remediation; agricultural soils; degraded soils; soil quality; carbon sequestration
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Dear Colleagues,

Agricultural soils, the foundation of global food production, are increasingly threatened by a wide variety of pollutants originating from irresponsible application of high loads of pesticides, poor agricultural management, and other anthropogenic activities. Increasing population requires managing agricultural soils for higher productivity.

This Special Issue explores the critical processes governing the fate and transport of contaminants within the soil matrix. It focuses on the diverse degradation pathways, encompassing microbial, chemical, and physical processes, that contribute to the stabilization and removal of pollutants from agricultural soils.

Authors are invited to submit original research articles on environmentally friendly remediation mechanisms. The research can be focused on (but not limited to) the following pollutant dynamics: adsorption/stabilization of pollutants through amendment application, degradation mechanisms of emerging pollutants, development of sustainable remediation strategies, risk assessment methodologies, and management practices aimed at safeguarding soil health and ensuring the long-term productivity of agricultural ecosystems.

Dr. Paloma Campos
Guest Editor

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Keywords

  • removal of emerging pollutants
  • waste as soil ameliorant
  • sustainability
  • novel adsorbents
  • organic pollutants
  • soil amendments
  • heavy metals
  • adsorption kinetics
  • advanced treatment technologies

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Published Papers (1 paper)

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Research

23 pages, 1412 KB  
Article
Adsorption/Desorption Behaviour of the Fungicide Cymoxanil in Acidic Agricultural Soils
by Manuel Conde-Cid, Antía Gómez-Armesto, Vanesa Lalín-Pousa, Manuel Arias-Estévez and David Fernández-Calviño
Agriculture 2026, 16(1), 41; https://doi.org/10.3390/agriculture16010041 - 24 Dec 2025
Viewed by 349
Abstract
This study investigates the adsorption/desorption behaviour of the widely used fungicide cymoxanil in twelve acidic agricultural soils, providing the first comprehensive assessment of its retention dynamics. Cymoxanil exhibited low adsorption, with Kd(ads) values ranging from 0.57 to 4.40 L [...] Read more.
This study investigates the adsorption/desorption behaviour of the widely used fungicide cymoxanil in twelve acidic agricultural soils, providing the first comprehensive assessment of its retention dynamics. Cymoxanil exhibited low adsorption, with Kd(ads) values ranging from 0.57 to 4.40 L kg−1 and adsorption percentages between 18.7 and 65.9% at the highest tested concentration, suggesting high mobility and bioavailability in soils and, consequently, a potential environmental and human health risk. Hysteresis was observed, with desorption percentages for the highest initial concentration ranging from 2.4% to 32.6%, indicating that part of the adsorbed compound remained relatively strongly retained. Adsorption was positively correlated with desorption parameters, reflecting a statistical association whereby soils with higher adsorption tended to exhibit lower desorption. Among soil physicochemical properties, pH appeared to play a key role in controlling cymoxanil retention, as higher pH was associated with greater adsorption and lower desorption in the studied soils. Organic matter, clay content, and exchangeable base cations also appeared to influence cymoxanil behaviour, although to a lesser extent than pH. In this regard, soils richer in organic matter and clay, and with higher effective cation exchange capacity (eCEC), tended to display greater retention. Overall, cymoxanil adsorption appears to be largely governed by physisorption mechanisms—electrostatic interactions, cation exchange, and hydrophobic partitioning—while the observed hysteresis suggests that specific interactions, such as hydrogen bonding and π-π interactions, may also contribute to retention without implying irreversible chemisorption. Full article
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