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Advanced Technology for Water Quality Analysis and Treatment
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Advanced Technology for Water Quality Analysis and Treatment

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

Deadline for manuscript submissions: closed (27 January 2023) | Viewed by 5111

Special Issue Editors

Dr. Xiaopeng Ge

E-Mail Website
Guest Editor
Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing, China
Interests: adsorbents for the removal of pollutants; fate and fransport of contaminants; aquatic particulates and sediments; adsorption and coagulation processes of nanocomposite; municipal sewage sludge and biosolids
Dr. Cunzhen Liang

E-Mail Website
Guest Editor
Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, Beijing, China
Interests: detection and risk assessment of new trace organic contaminants in water; treatment of sulfur-containing pollutants; qualitative and quantitative analysis of PPCPs and EGs

Special Issue Information

Dear Colleagues,

The guarantee of water quality is a prerequisite for both ecosystem and human health. Therefore, the detection and removal of contaminants from both natural water bodies (rivers, lakes) and urban water are critical practices. In natural water, aquatic particulates are the most widespread, including nanoparticles, mineral grains, humus, microorganisms, and so on. They are the main carriers of multiple pollutants in water, affecting the fate and transport of contaminants. Urban water is mainly composed of drinking water, domestic sewage, and industrial wastewater. Its quality has been affected by pharmaceuticals and personal care products (PPCPs), emerging contaminants (EGs), heavy metals, and persistent organic pollutants in recent years. Some of these pollutants will combine with particulates or other contaminants, resulting in compound pollution to the water.

Therefore, water quality analysis and treatment are vital areas of study. Significantly, water quality parameters can be modelled (support vector regression, logistic regression, artificial neural network) to analyze and predict water quality in aquatic systems and sewage plants. Some advanced technologies (photochemistry, electrochemistry, nanotechnology, membrane technology, biotechnology) have also been applied to water treatment. For traditional water treatment methods, the development of novel adsorbents, coagulants, and flocculants have greatly improved treatment efficiency and cost-effectiveness.

This Special Issue aims to highlight recent studies and advances in water quality analysis and contaminant treatment. Papers related to advanced technology and improvements in conventional methods for water quality analysis and treatment are welcome for submission.

Dr. Xiaopeng Ge
Dr. Cunzhen Liang
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

  • environmental micro-interfacial process
  • aquatic particulates
  • aquasol and sediments
  • emerging contaminants
  • composite pollution
  • photochemistry/electrochemistry
  • nanotechnology
  • membrane
  • biotechnology
  • novel adsorbents/coagulants/ flocculants
  • water quality analysis

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Published Papers (2 papers)

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Research

18 pages, 3683 KiB  
Article
Impact of the Controlled Dump of Fez City (Morocco): Evaluation of Metallic Trace Elements Contamination in the Sediments
by Youssra Ahouach, Abdennasser Baali, Abdellah Boushaba, Oualid Hakam, Khalil Azennoud, Aziza Lyazidi, Safaa Benmessaoud, Amine Assouguem, Mohammed Kara, Mona Abdullah Alsaigh, Amal M. Al-Mohaimeed and Tse-Wei Chen
Water 2023, 15(6), 1209; https://doi.org/10.3390/w15061209 - 20 Mar 2023
Cited by 1 | Viewed by 1988
Abstract
In order to qualify and quantify the impact of sediment contamination in hydric settings by metallic trace elements (MTE) emanating from the controlled dump of Fez city (northern Morocco), leachate and sediment sample analyses were carried out. The leachates collected from the 24 [...] Read more.
In order to qualify and quantify the impact of sediment contamination in hydric settings by metallic trace elements (MTE) emanating from the controlled dump of Fez city (northern Morocco), leachate and sediment sample analyses were carried out. The leachates collected from the 24 sites are characterised by a pH between 6.91 and 8, a COD varying between 430.7 and 7962 mg/L, an NTK content up to 1955 mg/L, with an average of 1514 mg/L, and a nitrate concentration reaching 46 mg/L in some samples, which exceeds the standards for discharges into the natural environment. The chromium content emanating mainly from household waste varies between 1.69 and 4.90 mg/L. The MTE content (As, Cd, Co, Cr, Cu, Ni, Pb, Zn and Fe) of the different leachates varies from one basin to another. The sediments downstream of the dump along the sampling profile show pH values between 7.34 and 8.21 (compared to 7.96–8.82 for the reference samples), and electrical conductivity values fluctuate between 1.21 ms/cm and 5.37 ms/cm for the contaminated sediments (compared to 0.8 ms/cm for the reference sediment). The analysis of metallic trace elements in the sediments by ICP-AES shows that their content varies slightly from one sampling point to another. Furthermore, they do not vary considerably from the surface (0 cm) to the depth (20 cm). The average values of metallic element concentrations are 45.83 ± 2.14 mg/Kg for Cu, 4.40 ± 0.07 mg/Kg for Cd, 43.76 ± 3.40 mg/Kg for Cr, 72.99 ± 1.85 mg/Kg for Ni, 21.71 ± 6.55 mg/Kg for Pb and 102.02 ± 7.28 mg/kg for Zn. In effect, the negative environmental impact of Fez controlled dumping site is ostensibly underlined both by (i) the pollution load index values, which indicate a strong and progressive deterioration along the thalweg, and (ii) the statistical analysis (PCA), which reveals a common origin of the deduced pollutants through the strong correlation between the majority of the analysed elements. Full article
(This article belongs to the Special Issue Advanced Technology for Water Quality Analysis and Treatment)
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19 pages, 3908 KiB  
Article
Preparation of Sulfhydryl Functionalized MCM-48 and Its Adsorption Performance for Cr(VI) in Water
by Heng Li, Shijing Wang, Ranran Li, Yan Zhang and Hao Wang
Water 2023, 15(3), 524; https://doi.org/10.3390/w15030524 - 28 Jan 2023
Cited by 3 | Viewed by 2728
Abstract
In this study, we modify the Mobil Composition of Matter No. 48 (MCM-48) silica material (MCM-48-SH) using Mercapto. The preparation conditions of MCM-48-SH are then explored, its structural characteristics are analyzed using characterization, and it is used to adsorb Cr(VI) from wastewater. A [...] Read more.
In this study, we modify the Mobil Composition of Matter No. 48 (MCM-48) silica material (MCM-48-SH) using Mercapto. The preparation conditions of MCM-48-SH are then explored, its structural characteristics are analyzed using characterization, and it is used to adsorb Cr(VI) from wastewater. A series of experiments are then designed to adsorb Cr(VI) in experimental water, and the influence of solution environment changes (such as time, temperature, pH, and coexisting ions) on the adsorption effect was explored. The experimental data showed that the MCM-48-SH material not only retained the basic structure of MCM-48 but also successfully grafted the functional group -SH. The adsorption of Cr(VI) on MCM-48-SH followed the Langmuir isotherm model and the kinetic adsorption was fitted with a pseudo-second-order kinetic model. Under these conditions, the adsorption capacity of MCM-48-SH (17.9 mg/g) on Cr(VI) was much larger than that of unmodified MCM-48 (4.0 mg/g) and amino-modified MCM-48-NH2 (0.5 mg/g). The adsorption effect was the most obvious when the pH = 2 but the adsorption effect was not good under alkaline conditions. Other competitive ions in the solution had an influence on the adsorption effect, among which anions had a great influence. Within 3 d, when the concentration of Cr(VI) was 80 mg/L, the maximum adsorption capacity reached 17.9 mg/g and the maximum removal rate reached 93.45%. In the comparative adsorption experiment, the adsorption effect of MCM-48-SH (17.9 mg/g) on Cr(VI) was notably better than that of the other two common adsorbents: coconut shell activated carbon (9.2 mg/g) and bentonite (1.2 mg/g). In summary, MCM-48-SH can be used to effectively eliminate Cr(VI) in waste water. Full article
(This article belongs to the Special Issue Advanced Technology for Water Quality Analysis and Treatment)
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