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Water
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Water Pollution Control and Remediation: Methods, Techniques and Processes
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Water Pollution Control and Remediation: Methods, Techniques and Processes

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

Deadline for manuscript submissions: closed (20 January 2024) | Viewed by 2352

Special Issue Editors

Dr. Ya Cheng

E-Mail Website
Guest Editor
School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an, China
Interests: drinking water treatment; filtration; iron/manganese/ammonia removal; catalytic oxidation; surface water; groundwater; manganese oxide
Dr. Shilei Zhou

E-Mail Website
Guest Editor
School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, China
Interests: drinking water; remediation; aerobic denitrification; nitrogen removal; dissolved organic matter; reservoir; water stratification; water quality; microbial community

Special Issue Information

Dear Colleagues,

Water is the source of life, the foundation of production, and the basis of ecology; thus, protection of the water environment is vital to the interests of humanity. Water pollution control encompasses a wide range of objectives, from ensuring the safety of drinking water to sewage treatment, from water and soil conservation to black and odorous water treatment, from pollution source control to the ecological restoration of water, and from surface water pollution control to groundwater pollution prevention.  

For this Special Issue, entitled “Water Pollution Control and Remediation: Methods, Techniques and Processes”, we welcome different types of contributions: empirical research, theoretical papers, methodological articles, and systematic reviews. Potential areas of interest include, but are not limited to, ecological remediation technologies, water quality response of extreme climatic events (extreme rainfall or drought), interaction mechanisms between microbial communities and reservoir water quality, development of new technologies, and the preparation of new materials and applications of new equipment for emerging pollutants.

Dr. Ya Cheng
Dr. Shilei Zhou
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.

Published Papers (2 papers)

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Research

14 pages, 2660 KiB  
Article
Synthesis of MgO-Coated Canna Biochar and Its Application in the Treatment of Wastewater Containing Phosphorus
by Jingjiang Xiao, Haiping Long, Xuemei He, Guoyu Chen, Tao Yuan, Yi Liu and Qiaoling Xu
Water 2024, 16(6), 873; https://doi.org/10.3390/w16060873 - 18 Mar 2024
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Abstract
In order to treat phosphorus-containing wastewater and realize the resource utilization of wetland plant residues, biochar was prepared by the pyrolysis of canna aquatic plant waste at 700 °C, and the adsorption characteristics of phosphorus by MgO-modified biochar (MBC) were explored. The main [...] Read more.
In order to treat phosphorus-containing wastewater and realize the resource utilization of wetland plant residues, biochar was prepared by the pyrolysis of canna aquatic plant waste at 700 °C, and the adsorption characteristics of phosphorus by MgO-modified biochar (MBC) were explored. The main results are as follows: the adsorption capacity of the MBC was eight times that of unmodified biochar (BC), and the adsorption capacity was up to 244 mg/g. The isothermal adsorption data were consistent with the Langmuir equation, which indicates monolayer adsorption. The functional groups changed little before and after the modification, but a new diffraction peak appeared after the modification. Compared with the standard card, it was suggested that there were MgO crystals with a higher purity. SEM images showed that the BC had a smooth surface, an obvious pore structure, and a thin pore wall, while the MBC had a rough surface and a layered structure, which can provide more adsorption sites for phosphate adsorption. In addition, an XPS analysis showed that Mg3(PO4)2 crystals appeared on the surface of the MBC after adsorption. The mechanism analysis showed that MgO is an important substance for MBC to adsorb phosphorus, and electrostatic adsorption and complex precipitation play key roles. In the test to verify the removal of actual phosphorus-containing wastewater by MBC, it was found that the removal rates for wastewater with 2.06 mg/L and 199.8 mg/L of phosphorus by MBC were as high as 93.4–93.9% and 99.2–99.3%, respectively. MBC can be used as an efficient adsorbent for phosphorus removal. Full article
(This article belongs to the Special Issue Water Pollution Control and Remediation: Methods, Techniques and Processes)
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16 pages, 2892 KiB  
Article
Treatment of Cadmium-Contaminated Water Systems Using Modified Phosphate Rock Powder: Contaminant Uptake, Adsorption Ability, and Mechanisms
by Shuo Gao, Xirui Kang, Yaping Li, Jinpeng Yu, Hui Wang, Hong Pan, Quangang Yang, Zhongchen Yang, Yajie Sun, Yuping Zhuge and Yanhong Lou
Water 2024, 16(6), 862; https://doi.org/10.3390/w16060862 - 17 Mar 2024
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Abstract
Cadmium (Cd) water pollution threatens environmental systems and human health. Adsorption is the preferred method for purifying water bodies polluted by Cd, and the development of effective adsorption materials is critical. The performance of original phosphate rock powder (PRP) as an adsorption medium [...] Read more.
Cadmium (Cd) water pollution threatens environmental systems and human health. Adsorption is the preferred method for purifying water bodies polluted by Cd, and the development of effective adsorption materials is critical. The performance of original phosphate rock powder (PRP) as an adsorption medium for purifying water bodies polluted by Cd was compared with that of phosphate rock powder modified with fulvic acid, chitosan, MnO2, and sulfhydryl, respectively, and their appearance and adsorption properties were investigated. The surface structures of all modified powders were rougher than the original, and their functional groups were richer. The greatest Cd2+ adsorption capacity, 1.88 mg g−1, was achieved with chitosan-modified PRP (CMPRP). This was 106.59% greater than that of PRP. The capacities of fulvic acid and MnO2 were 15.38% and 4.40% greater than that of the original, respectively. When the fulvic acid-modified PRP, CMPRP, and manganese dioxide PRP reached adsorption equilibrium, the removal rates of Cd2+ were 51.86%, 93.26%, and 46.70%, respectively. Moreover, the removal rate of Cd2+ by CMPRP was 104.43% higher than that of PRP. The main Cd2+ adsorption mechanisms for the MPRPs were electrostatic interactions, ion exchange, co-precipitation, and complexation. Moreover, the processing of the phosphate rock powder was straightforward, harmless to the environment, and could be effectively used for the removal of Cd. These results show that CMPRP is promising as a new adsorption material to treat Cd-contaminated water. Full article
(This article belongs to the Special Issue Water Pollution Control and Remediation: Methods, Techniques and Processes)
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