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Selected Papers from the 2nd International Electronic Conference on Water Science

A special issue of Water (ISSN 2073-4441).

Deadline for manuscript submissions: closed (30 June 2018) | Viewed by 50299

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Department of Chemistry and Biochemistry Faculdade de Ciências de Lisboa Universidade de Lisboa C8, Campo Grande, 1749-016 Lisbon, Portugal
Interests: electroanalytical and environmental chemistry: ionic solutions, pH and acidity; potentiometric analysis; ion chromatography; seawater, coastal waters and low ionic strength aqueous solutions; air-water interfaces and exchanges; metrology in analytical chemistry
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Climate Change Studies of Aquatic & Marine Ecosystems, Annis Water Resources Institute, Grand Valley State University,131 Lake Michigan Center,740 W. Shoreline Dr., Muskegon, MI 49441-1678, USA
Interests: marine ecosystems; climate change; global warming; global change; climate models; coral bleaching; ecosystem services; adaptation; acclimation
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Department of Chemical Engineering Materials Environment (DICMA), Sapienza University of Rome, 00185 Rome, Italy
Interests: geochemistry; hydrogeochemistry; groundwater; geochemistry of sustainable processes; geochemical assessment of environmental quality; isotopic geochemistry; groundwater pollution; groundwater remediation; water quality; water safety; sustainable development; environmental geochemistry; climate change; earthquakes; drinking water
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Department of Civil Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
Interests: stormwater harvesting; water consumption in buildings; water efficiency; rainwater use in buildings; sustainability; permeable pavements; energy efficiency; buildings; climate change
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Department of Civil and Environmental Engineering, University of California, Irvine, CA 92697-2175, USA
Interests: water quality; environmental engineering; water microbiology; risk assessment; desalination biofouling; membrane process; harmful algal bloom
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J.W. Goethe University, Institute of Atmospheric and Environmental Sciences, Department of Environmental Analytical Chemistry, Altenhöferallee 1, 60438 Frankfurt am Main, Germany
Interests: analysis of biodegradation of hydrocarbons in groundwater (natural attenuation); development of analytical methods for "emerging contaminants" ; chlorinated organophosphates (flame retardants), gemini-tensides (TMDD) and pharmaceuticals in the aquatic environment
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Special Issue Information

Dear Colleagues,

This Special Issue comprises selected papers from the Proceedings of the 2nd International Electronic Conference on Water Science (ECWS2), 16–30 November, 2017, on sciforum.net, an online platform for hosting scholarly e-conferences and discussion groups.

After the first electronic conference in water sciences (ECWS1) offered a wide range of topics, mostly related to the quality of water and the public supply of safe drinking water obtained from various resources, we found it appropriate to expand the scope of the conference to water that may have been exposed to various contaminations and may be intended for multiple uses. During this past year, our attention has been called to a variety of original case studies in which aquatic systems played central roles. New experimental and model approaches are largely contributing to improve our knowledge and capacity to supply answers to problems inherent to progress and development. This makes us look forward to stimulating scientific exchange and discussion.

Selected papers that attracted the most interest on the web, or that provided a particularly innovative contribution, have been gathered for publication. These papers have been subjected to peer review and are published with the aim of rapid and wide dissemination of research results, developments and applications. We hope this Conference Series will continue to grow in the acceptance and recognition by potential participants, contributors, experts who want to disseminate their latest findings, and readers who seek for information on relevant water science topics.

Prof. Dr. Maria Filomena Camões
Prof. Dr.  Kevin B. Strychar
Prof. Dr. Maurizio Barbieri
Prof. Dr. Enedir Ghisi
Prof. Dr. Sunny Jiang
Prof. Dr. Wilhelm Püttmann
Prof. Dr. Richard Smardon
Guest Editors

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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.

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Published Papers (7 papers)

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Research

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10 pages, 2113 KiB  
Article
Determination of Micropollutants in Water Samples from Swimming Pool Systems
by Anna Lempart, Edyta Kudlek and Mariusz Dudziak
Water 2018, 10(8), 1083; https://doi.org/10.3390/w10081083 - 14 Aug 2018
Cited by 24 | Viewed by 5581
Abstract
The present study investigated the occurrence of selected micropollutants, including emerging contaminants from a group of pharmaceuticals and personal care products (PPCPs) in water samples from swimming pool systems. The study area was selected based on the lack of available information regarding suspected [...] Read more.
The present study investigated the occurrence of selected micropollutants, including emerging contaminants from a group of pharmaceuticals and personal care products (PPCPs) in water samples from swimming pool systems. The study area was selected based on the lack of available information regarding suspected contamination of swimming pool water by PPCPs. The variety and concentration of chemical compounds in these aquatic systems can be quite diversified, presenting a challenge in terms of both purification and quality control. Determination of PPCPs requires very sensitive analytical methods that make it possible to confirm the presence of tested compounds in a complex organic extract. In this field, gas chromatography-mass spectrometry (GC-MS) can be used. With this system, selected ion monitoring can be performed, which reduces the detection limits of the investigated analyte. This paper aims to present an analytical method and strategy that can be adapted to obtain information on the composition of water in swimming pool systems. The sample preparation methodology, including Solid Phase Extraction, has been developed for the trace determination of two pharmaceuticals—caffeine, carbamazepine—and one sunscreen constituent—benzophenone-3—in swimming pool water samples. Full article
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18 pages, 3336 KiB  
Article
Countermeasure Analysis on Promoting Drinking Water Safety in Shanshan County, Xinjiang Autonomous Region, China
by Weiwei Shao, Jiahong Liu, Haixing Zhang, Dianyi Yan and Weijia Li
Water 2018, 10(8), 1022; https://doi.org/10.3390/w10081022 - 2 Aug 2018
Cited by 1 | Viewed by 5240
Abstract
In recent years, China has paid an increasing amount of attention to improving urban and rural drinking water safety, an important aspect of building a healthy and stable society. This study analyzed countermeasures to promote drinking water safety in Turpan City of Shanshan [...] Read more.
In recent years, China has paid an increasing amount of attention to improving urban and rural drinking water safety, an important aspect of building a healthy and stable society. This study analyzed countermeasures to promote drinking water safety in Turpan City of Shanshan County, in the Xinjiang Autonomous Region. First, we considered the current state of drinking water safety in Shanshan, including issues such as pollution, outdated water treatment technologies, leakage in the water supply pipe network, insufficient emergency management capability in urban areas, and low water supply guarantee rates in rural areas due to poor construction standards. Second, the quantity of guaranteed water resources was estimated; on this basis, an ideal distribution of regional water plants and water supply network needs for the optimal allocation of water resources is suggested. Third, a water purification program was developed to solve untreated water quality problems, including centralized and decentralized water quality treatments alongside intelligent water flow control processes. Water resource conservation and risk control measures are also proposed in order to promote the security of drinking water; equipment updates, and the establishment of an intelligent water management platform are also suggested. Full article
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18 pages, 5564 KiB  
Article
Decomposition of Contaminants of Emerging Concern in Advanced Oxidation Processes
by Edyta Kudlek
Water 2018, 10(7), 955; https://doi.org/10.3390/w10070955 - 19 Jul 2018
Cited by 55 | Viewed by 6408
Abstract
This paper compares the removal degrees of selected contaminants of emerging concern in water solutions during advanced oxidation processes (AOPs), such as H2O2, O3, UV, UV/TiO2, UV/H2O2, and UV/O3. [...] Read more.
This paper compares the removal degrees of selected contaminants of emerging concern in water solutions during advanced oxidation processes (AOPs), such as H2O2, O3, UV, UV/TiO2, UV/H2O2, and UV/O3. The tested micropollutants belong to the following groups: pharmaceuticals, dyes, UV filters, hormones, pesticides, and food additives. The highest removal rate of pharmaceutical compounds was observed during the UV/TiO2 process. The decomposition of hormones in this process exceeded 96% and the concentration of the UV filter dioxybenzone was reduced by 75%. The pesticide triallat and the food additive butylated hydroxytoluene were most effectively oxidized by the UV process and their removal degrees exceeded 90%. The lowest removal degree in all examined processes was observed in the case of caffeine. Toxicological analysis conducted in post-processed water samples indicated the generation of several oxidation by-products with a high toxic potential. The presence of those compounds was confirmed by the GC-MS analysis. The performance of the UV/O3 process leads to the increase of the toxicity of post-processed water solutions, especially solutions containing degradation by-products of carbamazepine, diclofenac sodium salt, acridine, trialatte, triclosan, and β-estradiol were characterized by high toxicity. Full article
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17 pages, 2427 KiB  
Article
Filtering Capability of Porous Asphalt Pavements
by Liseane Padilha Thives, Enedir Ghisi, Douglas Gherardt Brecht and Dario Menegasso Pires
Water 2018, 10(2), 206; https://doi.org/10.3390/w10020206 - 15 Feb 2018
Cited by 21 | Viewed by 6361
Abstract
The objective of this study is to assess the filtering capability of porous asphalt pavement models and the quality of rainwater filtered by such models. Three slabs of porous asphalt mixtures and two models composed of porous layers that resulted in porous pavement [...] Read more.
The objective of this study is to assess the filtering capability of porous asphalt pavement models and the quality of rainwater filtered by such models. Three slabs of porous asphalt mixtures and two models composed of porous layers that resulted in porous pavement structures were produced. Data were collected in two phases: using rainwater directly from the sky and then using stormwater runoff collected from a street. Parameters such as pH, dissolved oxygen, ammonia, phosphorus, nitrite, aluminium, chromium, copper, zinc, and iron were measured. For both rainwater and stormwater runoff quality analyses, there was an increase in the concentration of the following parameters: phosphorus, iron, aluminium, zinc, nitrite, chromium, copper, and pH; there was no significant variation in the concentration of dissolved oxygen; and there was a decrease in ammonia in one of the models. However, the concentrations of only phosphorus and aluminium exceeded the limits established by the Brazilian National Environmental Council and National Water Agency for the use of non-potable water. The models were capable of filtering rainwater and stormwater runoff, and reducing the concentration of ammonia. It can be concluded that it is possible to collect stormwater runoff from porous asphalt surfaces and porous asphalt pavements. Porous asphalt pavements are able to filter out certain pollutants from stormwater runoff and rainwater, and were shown to be an alternative to supply rainwater for non-potable uses and to recharge the water table. Full article
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7 pages, 1895 KiB  
Article
Empirical Characterization of Particle Size Distribution Spatial Dynamics for Helminth Eggs Detection in Waste Stabilization Ponds (WSP)
by Fides Izdori, Andrea J. C. Semiao and Paolo Perona
Water 2018, 10(2), 138; https://doi.org/10.3390/w10020138 - 1 Feb 2018
Cited by 2 | Viewed by 3756
Abstract
This study assesses seasonal particle size distribution (PSD) dynamics inside a waste stabilization ponds (WSP) (Buguruni, Tanzania) to understand settling dynamics of wastewater particles with an interest in helminth eggs. Results indicate that particles coming into the pond are mainly supracolloidal and settleables [...] Read more.
This study assesses seasonal particle size distribution (PSD) dynamics inside a waste stabilization ponds (WSP) (Buguruni, Tanzania) to understand settling dynamics of wastewater particles with an interest in helminth eggs. Results indicate that particles coming into the pond are mainly supracolloidal and settleables with 52.9% and 45.6%, respectively, in dry season and 48.9% and 49.9%, respectively, in wet season. Inflow PSD is a unimodal distribution that splits into settling and suspended PSDs, with an indication of particle breakage, as shown by the increased volume of smaller particles and hence the appearance of a bimodal distribution for the suspended particles. Up to 61.5% and 45.2% of particles that fall within the size range of helminths eggs are suspended during dry and wet seasons, respectively, with the potential to be carried in the effluent and to cause contamination. Full article
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17 pages, 2654 KiB  
Article
Identification of Phytoplankton Blooms under the Index of Inherent Optical Properties (IOP Index) in Optically Complex Waters
by Jesús A. Aguilar-Maldonado, Eduardo Santamaría-del-Ángel, Adriana González-Silvera, Omar D. Cervantes-Rosas, Lus M. López, Angélica Gutiérrez-Magness, Sergio Cerdeira-Estrada and María-Teresa Sebastiá-Frasquet
Water 2018, 10(2), 129; https://doi.org/10.3390/w10020129 - 30 Jan 2018
Cited by 13 | Viewed by 5662
Abstract
Phytoplankton blooms are sporadic events in time and are isolated in space. This complex phenomenon is produced by a variety of both natural and anthropogenic causes. Early detection of this phenomenon, as well as the classification of a water body under conditions of [...] Read more.
Phytoplankton blooms are sporadic events in time and are isolated in space. This complex phenomenon is produced by a variety of both natural and anthropogenic causes. Early detection of this phenomenon, as well as the classification of a water body under conditions of bloom or non-bloom, remains an unresolved problem. This research proposes the use of Inherent Optical Properties (IOPs) in optically complex waters to detect the bloom or non-bloom state of the phytoplankton community. An IOP index is calculated from the absorption coefficients of the colored dissolved organic matter (CDOM), the phytoplankton ( phy ) and the detritus (d), using the wavelength (λ) 443 nm. The effectiveness of this index is tested in five bloom events in different places and with different characteristics from Mexican seas: 1. Dzilam (Caribbean Sea, Atlantic Ocean), a diatom bloom (Rhizosolenia hebetata); 2. Holbox (Caribbean Sea, Atlantic Ocean), a mixed bloom of dinoflagellates (Scrippsiella sp.) and diatoms (Chaetoceros sp.); 3. Campeche Bay in the Gulf of Mexico (Atlantic Ocean), a bloom of dinoflagellates (Karenia brevis); 4. Upper Gulf of California (UGC) (Pacific Ocean), a diatom bloom (Coscinodiscus and Pseudo-nitzschia) and 5. Todos Santos Bay, Ensenada (Pacific Ocean), a dinoflagellate bloom (Lingulodinium polyedrum). The diversity of sites show that the IOP index is a suitable method to determine the phytoplankton bloom conditions. Full article
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Review

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25 pages, 2960 KiB  
Review
Rainwater Harvesting in Buildings in Brazil: A Literature Review
by Andrea Teston, Matheus Soares Geraldi, Barbara Müller Colasio and Enedir Ghisi
Water 2018, 10(4), 471; https://doi.org/10.3390/w10040471 - 12 Apr 2018
Cited by 54 | Viewed by 15726
Abstract
This article presents a literature review on rainwater usage in buildings in Brazil. It focuses on economic, environmental and social impacts. The legislation related to rainwater harvesting—including the cities that have made such a practice mandatory—was also assessed. The literature review was based [...] Read more.
This article presents a literature review on rainwater usage in buildings in Brazil. It focuses on economic, environmental and social impacts. The legislation related to rainwater harvesting—including the cities that have made such a practice mandatory—was also assessed. The literature review was based on a search strategy that uses protocols to find and select studies about the main subject, i.e., rainwater harvesting in buildings. The protocols were defined as the site to be investigated (buildings), the intervention (rainwater harvesting), and the expected result (influence on the potable water consumption). Despite the variation of water availability in the country, it was concluded that there is a high potential for potable water savings when using rainwater in buildings in Brazil. Finally, it was observed the need for financial investments in experimental research and innovation technologies in order to improve rainwater management. Full article
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