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Water
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Impacts of Hydrological Processes on Nutrient and Contaminant Transport
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Impacts of Hydrological Processes on Nutrient and Contaminant Transport

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydrology".

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 1269

Special Issue Editor

Dr. Xunchi Pu

E-Mail Website
Guest Editor
College of Water Resource and Hydropower, Sichuan University, Chengdu, China
Interests: phosphorus transport; nitrogen transport; water environment; reservoir; sediment transport; sorption-desorption

Special Issue Information

Dear Colleagues,

Both climate change and the human exploitation of rivers will impact hydrological processes. The exploitation of rivers is the main reason for the changes in natural hydrological processes. The changes in hydrological processes significantly impact basin environment ecology. During the process of river exploitation, reservoirs alter the natural hydrological processes. The changes in hydrological processes also directly affect the material transport in rivers and between rivers and land. Sedimentation in the reservoir further exacerbates the impact on the transport process of nutrients in the river, leading to changes in the nutrient state and rhythm of the river. The research in this Special Issue aims to study the impact of hydrological processes on nutrient transport and contaminant transport, providing support for the study of the impact of hydrological process changes on the flow state environmental system of rivers, and has significant implications for determining and improving the impact of river development on the ecological environment of rivers.

Dr. Xunchi Pu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nutrient transport
  • contaminant transport
  • hydrological processes
  • reservoir
  • sediment

Published Papers (1 paper)

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Research

19 pages, 21458 KiB  
Article
Modeling the Transport of Inorganic Arsenic Species through Field Soils: Irrigation and Soil Structure Effect
by Shah Rukh, Mohammad Saleem Akhtar, Fahad Alshehri, Ayaz Mehmood, Kouser Majeed Malik, Sattam Almadani, Ahmad Khan and Muhammad Shahab
Water 2024, 16(3), 386; https://doi.org/10.3390/w16030386 - 24 Jan 2024
Viewed by 1039
Abstract
Dissolved arsenic (As) may appear at the tile line level through preferential flow (PF), leading to contamination of shallow water bodies. Limited work on the movement of As forms in field soils urged the need for more research. The PF of arsenate (As(V)) [...] Read more.
Dissolved arsenic (As) may appear at the tile line level through preferential flow (PF), leading to contamination of shallow water bodies. Limited work on the movement of As forms in field soils urged the need for more research. The PF of arsenate (As(V)) and arsenite (As(III)) compared to chloride (Cl) at constant flow under saturated (10 mm), slightly unsaturated (−10 mm), and unsaturated (−40 mm) pressure heads was evaluated in replicated large field columns varying in subsoil structure. A solute containing As(V), As(III), and Cl was pulsed until the Cl concentration ratio in the drainage samples reached maxima and flushed with solute-free irrigation. HYDRUS-1D software version 4.15 was utilized to fit the breakthroughs of As(V) and As(III) in the dual-porosity physical non-equilibrium model (DP-PNE). The Langmuir equation was used to fit the As(V) and As(III) sorption isotherms, and blue dye staining was used for the marking of flow paths. Dye leaching was observed up to 50 cm or deeper in the soils. Under saturated conditions (+10 mm), Kotli, Guliana, and Mansehra soils showed chemical non-equilibrium (CNE) for As(V) and As(III); however, the extent of CNE was less under unsaturated conditions (−40 mm). These results implied that these well-structured soils had enough large macropores, which cause PF, but at the same time, they were also small enough to retain water and leach solutes under unsaturated conditions (−40 mm). It is concluded that irrigation of contaminated water or dumping solid waste on well-aggregated soil may exhibit PF of dissolved As during and after rains, and additionally As(III), which is more toxic and mobile under reduced conditions, has equal or greater potential for movement. Full article
(This article belongs to the Special Issue Impacts of Hydrological Processes on Nutrient and Contaminant Transport)
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