Special Issue "Transforming Process and Flux of Nutrients and Trace Metals at Sediment–Water Interface"

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

Deadline for manuscript submissions: closed (10 July 2022) | Viewed by 1119

Special Issue Editors

Prof. Dr. Hong Zhang
E-Mail Website
Guest Editor
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
Interests: phosophrus; heavy metals; diffusive flux; internal load; sediment; biogeochemistry
Prof. Dr. Shouliang Huo
E-Mail Website
Guest Editor
Chinese Research Academy of Environmental Sciences, Beijing, China
Interests: eutrophication; phosophrus; heavy metals; sediment; threshold values; guideline
Dr. Pei Lei
E-Mail Website
Guest Editor
School of Environment, Nanjing University, Nanjing, China
Interests: eutrophication; lake; dissolved organic matter (DOM); passive sampling; biogeochemistry; heavy metals; mercury methylation
Prof. Dr. Chao Wang
E-Mail Website
Guest Editor
Changjiang Water Resources Protection Institute, Wuhan, China
Interests: dissolved oxygen; ammonia; sediment; flux; reservoir; dissolved organic matter

Special Issue Information

Dear Colleagues,

We are pleased to announce the launch of a Special Issue which will focus on the topic of the transforming process and flux of nutrients and trace metals at the sediment-water interface. Manuscripts for this issue are expected to address one or more of the following themes:

1) Methodology

The editors welcome manuscripts on innovative analytical methods pertaining to nutrients or metals of environmental interest. Manuscripts that simply repeat the use of older methods with a different substrate will not be considered; only the presentation of innovative aspects are of interest.

2) Environmental distribution or pollution

Environmental distribution or pollution studies that report the levels of nutrients or metals in aquatic systems, e.g., lakes, rivers, wetlands, reservoirs, are of interest. Manuscripts reporting results of/that show partition, transformation, diffusion, or bioaccumulation are welcomed.

3) Risk assessment

This Special Issue also welcomes the submission of papers that have the objective of quantifying chemical risk to humans or aquatic systems. Manuscripts in this section should provide linkages between the variations in chemical concentrations in environmental media (water, sediment, biota) and hazard/risk assessment.

4) Pollution remediation or environmental management

Authors could also submit papers with the aim of providing solutions for pollution remediation or environmental management, according to your research on the biogeochemical process of nutrients and metals in aquatic systems.

Prof. Dr. Hong Zhang
Prof. Dr. Shouliang Huo
Dr. Pei Lei
Prof. Dr. Chao Wang
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 2200 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

  • phosphorus
  • nitrogen
  • organic
  • trace/heavy metals
  • dissolved oxygen
  • sampling
  • biogeochemistry
  • eutrophication
  • sediment-water interface

Published Papers (2 papers)

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Research

Article
A Comparison Study of the Nutrient Fluxes in a Newly Impounded Riverine Lake (Longjing Lake): Model Calculation and Sediment Incubation
Water 2022, 14(13), 2015; https://doi.org/10.3390/w14132015 - 23 Jun 2022
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Abstract
Diffusion flux is an essential tool to estimate the contribution of internal nitrogen and phosphorus in eutrophic lakes. There are mainly two methods, i.e., model calculation based on in-situ porewater sampling and water quality monitoring in laboratory incubation. The results obtained by the [...] Read more.
Diffusion flux is an essential tool to estimate the contribution of internal nitrogen and phosphorus in eutrophic lakes. There are mainly two methods, i.e., model calculation based on in-situ porewater sampling and water quality monitoring in laboratory incubation. The results obtained by the two methods are rarely compared, decreasing the validity of internal contribution and following management strategies. In this study, sediment samples were collected from a lake in China, then the fluxes were estimated by model calculation and laboratory incubation. The results show that there is an order of magnitude difference in the fluxes measured by these two methods. The mean values of ammonia (NH4+-N) and soluble reactive phosphate (SRP) obtained from the model calculations were 24.4 and 1.30, respectively. The mean values of NH4+-N and SRP obtained in the undisturbed group of sediment incubation were 7.84 and 5.47, respectively, and in the disturbed group of sediment incubation were 16.2 and 4.06, respectively. Sediment incubation is a combination of multiple influencing factors to obtain fluxes, while porewater model is based on molecular diffusion as the theoretical basis for obtaining fluxes. According to the different approaches of the two methods, sediment incubation is recommended as a research tool in lake autochthonous release management when the main objective is to remove pollution, while the porewater model is recommended as a research tool when the main objective is to control pollution. When assessing the diffusive flux of nitrogen, it is recommended to choose the stable form of total dissolved nitrogen to discuss the flux results. Full article
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Article
Arsenic Accumulation and Biotransformation Affected by Nutrients (N and P) in Common Blooming-Forming Microcystis wesenbergii (Komárek) Komárek ex Komárek (Cyanobacteria)
Water 2022, 14(2), 245; https://doi.org/10.3390/w14020245 - 15 Jan 2022
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Abstract
Arsenic accumulation and biotransformation in algae was mostly carried out in a medium that contained far higher nutrient concentrations than that in natural freshwaters. The obtained results might have limited environmental validity and result in a failure to describe authentic arsenic biogeochemical cycles [...] Read more.
Arsenic accumulation and biotransformation in algae was mostly carried out in a medium that contained far higher nutrient concentrations than that in natural freshwaters. The obtained results might have limited environmental validity and result in a failure to describe authentic arsenic biogeochemical cycles in natural freshwater systems. To validate the assumption, arsenic accumulation, and biotransformation in common bloom forming Microcystis wesenbergii was performed under a high nutrient concentration in BG11 medium (N = 250 mg/L, P = 7.13 mg/L), and adjusted low nutrients that mimicked values in natural freshwaters (N = 1.5 mg/L, P = 0.3 mg/L). The growth rate and maximum M. wesenbergii cell density were much lower in the high nutrient set, but more inhibition was shown with increasing ambient iAs(V) concentrations both in the high and low nutrient sets. The proportion of intracellular contents in total arsenicals decreased with increasing iAs(V) concentrations in both high and low nutrient sets but increased with incubation time. Intracellular iAs(III) was not found in the high nutrient set, while it formed high concentrations that could be comparable to that of an extracellular level in the low nutrient set. M. wesenbergii could methylate arsenic, and a higher proportion of organoarsenicals was formed in the low nutrient set. Lower intracellular MMA(V) and DMA(V) concentrations were found in the high nutrient set; contrarily, they presented a higher concentration that could be comparable to the extracellular ones in the low nutrient set. The results demonstrated that different nutrient regimes could affect arsenic accumulation and biotransformation in M. wesenbergii, and low nutrient concentrations could inhibit the excretion of iAs(III), MMA(V) and DMA(V) out of cells. Further investigations should be based on natural freshwater systems to obtain an authentic arsenic accumulation and biotransformation in cyanobacteria. Full article
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