Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.8
3.0
Journals
Water
Special Issues
Water Quality Impacts of Contaminant Transport and Transformation
share announcement

Water Quality Impacts of Contaminant Transport and Transformation

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

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 19101

Special Issue Editors

Dr. Charalambos Papelis

E-Mail Website
Guest Editor
Carlsbad Environmental Monitoring & Research Center (CEMRC), New Mexico State University, Carlsbad, NM, USA
Interests: aquatic chemistry; surface chemistry of mineral surfaces; spectroscopic investigations of complexes at the mineral/water interface; physicochemical characterization of mineral surfaces; modeling diffusion and adsorption in porous earth materials and adsorbents; water quality; physicochemical water treatment processes; chemical and geochemical fate and transport of trace elements
Special Issues, Collections and Topics in MDPI journals
Dr. Tohren C. Kibbey

E-Mail Website
Guest Editor
School of Civil Engineering and Environmental Science, University of Oklahoma, Norman, OK, USA
Interests: surface and interfacial interactions in complex natural and engineered environmental systems; physical–chemical interactions in complex systems; behaviors in unsaturated soils/multiple-phase systems; numerical model development for prediction and design in complex systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With an increasing human population, the challenge of providing adequate and affordable fresh water supplies of appropriate water quality is becoming increasingly urgent and is clearly one of the major challenges facing humanity. The water quality of surface and groundwaters is threatened by industrial operations related to energy production and resource mining, among others, as well as a lack of sanitation and wastewater treatment in large parts of the world. Climate change is expected to exacerbate these problems.

A number of abiotic and biological processes directly impact contaminant fate and transport and, ultimately, the water quality of impacted waters. These processes include biological transformations, as well as interactions of contaminants with mineral surfaces and aquifer materials, acid–base reactions, precipitation–dissolution reactions, and oxidation–reaction reactions, to name a few.

Contributions are invited for manuscripts describing research focusing on the water quality of surface and groundwaters, as affected by transport of contaminants, including inorganic and organic contaminants, as well as contaminants of emerging concern. Experimental and modeling studies focusing on surface and subsurface applications are welcome. Original research papers and critical reviews will be considered.

Dr. Charalambos Papelis
Dr. Tohren C. Kibbey
Guest Editors

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

  • Water quality
  • Contaminant transport
  • Surface water
  • Saturated zone
  • Unsaturated zone
  • Inorganic contaminants
  • Organic contaminants
  • Emerging contaminants

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

16 pages, 1523 KiB  
Article
Phosphate Uptake by Precipitation in Model Animal Wastewaters: Adjusting Ionic Strength and Ionic Composition to Maximize Phosphorus Removal
by Elizabeth C. Butler, Yifan Ding and David A. Sabatini
Water 2022, 14(14), 2229; https://0-doi-org.brum.beds.ac.uk/10.3390/w14142229 - 15 Jul 2022
Viewed by 1317
Abstract
While phosphorus is a limited resource that is essential for agriculture, its release to the environment adversely impacts water quality. At the same time, animal wastewaters contain significant quantities of phosphorus and nitrogen that can be recovered for beneficial use. Phosphorus uptake experiments [...] Read more.
While phosphorus is a limited resource that is essential for agriculture, its release to the environment adversely impacts water quality. At the same time, animal wastewaters contain significant quantities of phosphorus and nitrogen that can be recovered for beneficial use. Phosphorus uptake experiments were performed with magnesium-treated corn-cob char and with magnesium silicate prepared using silicate from rice straw at pH 8 and 9. The concentration of dissolved phosphorus as a function of total added ammonium chloride (NH4Cl) was determined, and chemical equilibrium modeling was used to investigate the concentration trends of dissolved and mineral species. According to chemical equilibrium modeling, carbonate alkalinity exerted a significant magnesium demand, with approximately half of all added magnesium forming magnesite (MgCO3(s)). As total added NH4Cl increased, excess Cl− complexed with dissolved Mg2+ in competition with orthophosphate, freeing orthophosphate to precipitate, mainly as the mineral struvite (NH4MgPO4·6H2O(s)). As the concentration of added NH4Cl increased by a factor of ten, measured concentrations of dissolved phosphorus decreased by a factor of ten, meaning that ionic composition has the potential to significantly impact the amount of phosphorus that can be recovered from wastewaters for beneficial use. Full article
(This article belongs to the Special Issue Water Quality Impacts of Contaminant Transport and Transformation)
►▼ Show Figures

Figure 1

10 pages, 2122 KiB  
Article
Dissolution-Desorption Dynamics of Strontium During Elution Following Evaporation: pH and Ionic Strength Effects
by William C. Weaver, Tohren C. G. Kibbey and Charalambos Papelis
Water 2020, 12(5), 1461; https://0-doi-org.brum.beds.ac.uk/10.3390/w12051461 - 20 May 2020
Viewed by 3073
Abstract
Radioactive strontium-90 (90Sr2+) is a fission byproduct of uranium and plutonium production, and therefore understanding its environmental fate is of particular importance for predicting the evolution of long-term risk from historical releases. The nonradioactive strontium cation, Sr2+, [...] Read more.
Radioactive strontium-90 (90Sr2+) is a fission byproduct of uranium and plutonium production, and therefore understanding its environmental fate is of particular importance for predicting the evolution of long-term risk from historical releases. The nonradioactive strontium cation, Sr2+, is a chemical analog for 90Sr2+ that is often used in studies designed to understand the environmental behaviors of 90Sr2+. The focus of this work was on understanding the dynamics of remobilization of strontium following evaporation to dryness in porous media. Evaporation is ubiquitous in the unsaturated zone, and has the potential to significantly impact the dynamics of transport by driving adsorption or precipitation on solid surfaces. For this work, a series of transport experiments were conducted examining the behavior of strontium over a range of pH values, ionic strengths, and concentrations. Saturated transport experiments were conducted, followed by experiments designed to examine the release and transport following evaporation to dryness. Results show increasing saturated retardation with increasing pH, decreasing ionic strength, and decreasing concentration, with the concentration exhibiting the strongest effect. Breakthrough curves at low concentrations were also found to be consistent with significant rate-limited desorption. Remobilization elution curves measured following evaporation to dryness exhibited the high initial effluent concentrations, exceeding the influent strontium concentration, most likely caused by the initial dissolution and accumulation of strontium by the advancing solution. Concentrations at later times were found to be largely consistent with the dynamics of saturated transport for the systems studied. Full article
(This article belongs to the Special Issue Water Quality Impacts of Contaminant Transport and Transformation)
►▼ Show Figures

Figure 1

16 pages, 3006 KiB  
Article
Impact of Microplastic Fibers from the Degradation of Nonwoven Synthetic Textiles to the Magdalena River Water Column and River Sediments by the City of Neiva, Huila (Colombia)
by Paula Martínez Silva and Mark A. Nanny
Water 2020, 12(4), 1210; https://0-doi-org.brum.beds.ac.uk/10.3390/w12041210 - 24 Apr 2020
Cited by 67 | Viewed by 9044
Abstract
Magdalena River surface water and shoreline sediments were sampled for microplastic particles at three locations in the city of Neiva, Colombia: upstream, city center, and downstream of the raw wastewater outflow. The absence of an industrial and manufacturing sector in Neiva provided an [...] Read more.
Magdalena River surface water and shoreline sediments were sampled for microplastic particles at three locations in the city of Neiva, Colombia: upstream, city center, and downstream of the raw wastewater outflow. The absence of an industrial and manufacturing sector in Neiva provided an opportunity to assess the impact of upstream agricultural practices, as well as municipal activities such as wastewater outflow and laundry washing, on the quantity, polymer composition, and morphology of microplastic particles produced per capita and entering a river system. Microplastic particle concentrations increased with downstream distance, with microfiber concentrations ranging from 0.097 to 0.135 fibers/L in the river water and 25.5 to 102.4 fibers/kg in shoreline sediment. Microplastic fragment concentrations were 0.013–0.028 fragments/L in surface water and 10.4–12.7 fragments/kg of sediment. Raman microscope and scanning electron microscopy identified the relative composition of the polymers comprising the microplastic particles was similar regardless of sampling site or whether the sample was collected from the surface water or shoreline sediments, with polypropylene and polyethylene comprising at least 75% of the total polymers in all samples. Average fiber widths of < 20 µm in all but one sample, along with the lack of acrylic and polyester fibers used predominantly in woven synthetic textiles, indicated that the degradation of nonwoven synthetic textiles is the predominant origin of these microplastic fibers in the Magdalena River. Full article
(This article belongs to the Special Issue Water Quality Impacts of Contaminant Transport and Transformation)
►▼ Show Figures

Figure 1

15 pages, 1241 KiB  
Article
Capsid Integrity qPCR—An Azo-Dye Based and Culture-Independent Approach to Estimate Adenovirus Infectivity after Disinfection and in the Aquatic Environment
by Mats Leifels, David Shoults, Alyssa Wiedemeyer, Nicholas J. Ashbolt, Emanuele Sozzi, Angela Hagemeier and Lars Jurzik
Water 2019, 11(6), 1196; https://0-doi-org.brum.beds.ac.uk/10.3390/w11061196 - 8 Jun 2019
Cited by 19 | Viewed by 4698
Abstract
Recreational, reclaimed and drinking source waters worldwide are under increasing anthropogenic pressure, and often contain waterborne enteric bacterial, protozoan, and viral pathogens originating from non-point source fecal contamination. Recently, the capsid integrity (ci)-qPCR, utilizing the azo-dyes propidium monoazide (PMA) or ethidium monoazide (EMA), [...] Read more.
Recreational, reclaimed and drinking source waters worldwide are under increasing anthropogenic pressure, and often contain waterborne enteric bacterial, protozoan, and viral pathogens originating from non-point source fecal contamination. Recently, the capsid integrity (ci)-qPCR, utilizing the azo-dyes propidium monoazide (PMA) or ethidium monoazide (EMA), has been shown to reduce false-positive signals under laboratory conditions as well as in food safety applications, thus improving the qPCR estimation of virions of public health significance. The compatibility of two widely used human adenovirus (HAdV) qPCR protocols was evaluated with the addition of a PMA/EMA pretreatment using a range of spiked and environmental samples. Stock suspensions of HAdV were inactivated using heat, UV, and chlorine before being quantified by cell culture, qPCR, and ci-qPCR. Apparent inactivation of virions was detected for heat and chlorine treated HAdV while there was no significant difference between ci-qPCR and qPCR protocols after disinfection by UV. In a follow-up comparative analysis under more complex matrix conditions, 51 surface and 24 wastewater samples pre/post UV treatment were assessed for enteric waterborne HAdV to evaluate the ability of ci-qPCR to reduce the number of false-positive results when compared to conventional qPCR and cell culture. Azo-dye pretreatment of non-UV inactivated samples was shown to improve the ability of molecular HAdV quantification by reducing signals from virions with an accessible genome, thereby increasing the relevance of qPCR results for public health purposes, particularly suited to resource-limited low and middle-income settings. Full article
(This article belongs to the Special Issue Water Quality Impacts of Contaminant Transport and Transformation)
►▼ Show Figures

Graphical abstract

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop