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Advances in Wastewater Resourcezation
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Advances in Wastewater Resourcezation

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water Resources Management, Policy and Governance".

Deadline for manuscript submissions: closed (20 January 2024) | Viewed by 15315

Special Issue Editor

Prof. Dr. Lei Qin

E-Mail Website
Guest Editor
Center for Membrane Separation and Water Science & Technology, Zhejiang University of Technology, Hangzhou, China
Interests: advanced oxidation; adsorption; nanomaterials; membrane bioreactor; membrane fouling; membrane modification; wastewater resourcezation

Special Issue Information

Dear Colleagues,

This Special Issue is focused on providing a state-of-the-art understanding and description of current water treatment technology and new functional materials. The advanced wastewater treatment methods include advanced oxidation, adsorption, biological conversion, membrane separation and membrane bioreactivity. We are particularly interested in papers that provide a comprehensive multifunctional material design and the synthesis of a topic related to the transformation and decomposition of waste.

Prof. Dr. Lei Qin
Guest Editor

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

  • advanced oxidation
  • nanomaterials
  • adsorption
  • membrane bioreactor
  • membrane fouling
  • membrane modification
  • wastewater resourcezation

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (4 papers)

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Research

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12 pages, 4693 KiB  
Article
Ozone Catalysis Degradation of Sodium Acetate via Vacancy-Driven Radical Oxidation over Fe-Modified Fly Ash
by Yaoji Chen, Ruifu Chen, Xinglan Chang, Jingying Yan, Yajie Gu, Shuang Xi, Pengfei Sun and Xiaoping Dong
Water 2023, 15(21), 3801; https://doi.org/10.3390/w15213801 - 30 Oct 2023
Cited by 1 | Viewed by 1246
Abstract
In order to realize the high value-added reuse of coal fly ash, a reusable Fe-modified fly ash catalyst was synthesized for ozone catalysis degradation of chemical oxygen demand (COD) in wastewater. Through enhancement of the pretreatment procedure and FeOx modification, the resulting [...] Read more.
In order to realize the high value-added reuse of coal fly ash, a reusable Fe-modified fly ash catalyst was synthesized for ozone catalysis degradation of chemical oxygen demand (COD) in wastewater. Through enhancement of the pretreatment procedure and FeOx modification, the resulting fly ash with Fe modification demonstrated increased specific surface area and porosity. The presence of Fe loading significantly enhances the reactivity of surface oxidizing reactive species, particularly oxygen vacancy, leading to improved adsorption and activation properties towards ozone molecules. Sodium acetate is chosen as a probe for contaminants due to its status as a small organic substance that remains resistant to further direct oxidation by ozone. This makes it suitable for evaluating the catalyst’s effectiveness in degrading chemical oxygen demand (COD). The quantitative detection of free radicals revealed the generation of •O2− was nearly 10 times that of •OH and dominated the reaction. This study showcases the potential of fly ash, an industrial byproduct, to be utilized as a cost-effective and easily prepared catalyst with consistent physical and chemical characteristics. Full article
(This article belongs to the Special Issue Advances in Wastewater Resourcezation)
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13 pages, 3476 KiB  
Article
Mn3O4 Catalysts for Advanced Oxidation of Phenolic Contaminants in Aqueous Solutions
by Syaifullah Muhammad, Muhammad Wahyu Nugraha, Edy Saputra and Nasrul Arahman
Water 2022, 14(13), 2124; https://doi.org/10.3390/w14132124 - 3 Jul 2022
Cited by 3 | Viewed by 2939
Abstract
Water-soluble organic pollutants, such as phenolic compounds, have been exposed to environments globally. They have a significant impact on groundwater and surface water quality. In this work, different Mn3O4 catalysts were prepared for metal oxide activation of peroxymonosulfate (PMS) to [...] Read more.
Water-soluble organic pollutants, such as phenolic compounds, have been exposed to environments globally. They have a significant impact on groundwater and surface water quality. In this work, different Mn3O4 catalysts were prepared for metal oxide activation of peroxymonosulfate (PMS) to remove the phenolic compound from the water environment. The as-prepared catalysts were characterized using thermogravimetric-differential thermal analysis (TG-DTA), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) surface area analysis. Furthermore, the effect of temperature and reusability of the as-prepared Mn3O4 catalysts is also investigated. The Mn3O4 nanoparticles (NPs) catalyst reveals an excellent performance for activating PMS to remove phenol compounds. Mn3O4 NPs exhibits 96.057% efficiency in removing 25 ppm within 60 min. The kinetic analysis shows that Mn3O4 NPs fitted into pseudo-first order kinetic model and exhibited relatively low energy activation of 42.6 kJ/mol. The reusability test of Mn3O4 NPs displays exceptional stability with 84.29% efficiency after three-sequential cycles. The as-prepared Mn3O4 NPs is proven suitable for phenolic remediation in aqueous solutions. Full article
(This article belongs to the Special Issue Advances in Wastewater Resourcezation)
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17 pages, 2702 KiB  
Article
Crop Water-Saving Potential Based on the Stochastic Distance Function: The Case of Liaoning Province of China
by Huilan Piao, Wanting Cheng, Haisheng Liu, Jie Lyu, Xudong Zhang and Shijun Sun
Water 2022, 14(3), 432; https://doi.org/10.3390/w14030432 - 30 Jan 2022
Viewed by 3090
Abstract
Scientific evaluation of crop water use efficiency is of great significance for ascertaining water-saving potential and realizing efficient utilization of water resources. In this paper, we calculated the water footprint of crop growth, pollution water footprint and production water footprint of 14 cities [...] Read more.
Scientific evaluation of crop water use efficiency is of great significance for ascertaining water-saving potential and realizing efficient utilization of water resources. In this paper, we calculated the water footprint of crop growth, pollution water footprint and production water footprint of 14 cities in Liaoning Province, China, by using the water footprint theory, established the crop water use efficiency model of stochastic frontier distance function, and analyzed the spatial-temporal variation characteristics of crop water use efficiency (WUE), ecological WUE and production WUE. Results show that: (1) the average water footprint of crop growth was 1.714 × 109 m3, the ecological water footprint of crop was 6.26 × 108 m3, and the water footprint of crop production was 2.34 × 109 m3 from 2001 to 2017 for the whole province. (2) the WUE of crop growth was 0.821, the crop ecological WUE was 0.845 and crop production was 0.865, respectively. We concluded that Liaoning province can save 17.9% of crop consumption water, equivalent to 8.38 × 108 m3, 15.5% of ecological water, equivalent to 7.25 × 108 m3 and 13.5% of production water, equivalent to 6.32 × 108 m3 by strengthening the popularization of agricultural high-efficiency water use technology and improving the level of policy management. This research provides a basic support for the evaluation of crop water-saving potential with the stochastic frontier approach in other regions. Full article
(This article belongs to the Special Issue Advances in Wastewater Resourcezation)
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Review

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18 pages, 1432 KiB  
Review
Porous Biochar Materials for Sustainable Water Treatment: Synthesis, Modification, and Application
by Ruichenzhi Li, Yujiao Wu, Xujun Lou, Haorui Li, Jing Cheng, Bin Shen and Lei Qin
Water 2023, 15(3), 395; https://doi.org/10.3390/w15030395 - 18 Jan 2023
Cited by 16 | Viewed by 7333
Abstract
In the current world, the increasingly developed industries of mankind have caused huge pollution to the earth on which we live. And the water resources, which are the source of human life, are also being seriously polluted and destroyed. Water pollution has become [...] Read more.
In the current world, the increasingly developed industries of mankind have caused huge pollution to the earth on which we live. And the water resources, which are the source of human life, are also being seriously polluted and destroyed. Water pollution has become an urgent need to deal with in today’s world. In order to achieve sustainable development, people are constantly using new materials in the process of water treatment. Biochar material is one of them. In the thermochemical process, biomass produces a common by-product coke, which is also called biochar as a result of biomass decomposition. Due to the low price and large specific surface area which can reach over 1000 m2·g−1, it has many applications and advantages in catalysis, adsorption, fuel cell, soil improvement, etc., and has a wide range of application prospects. Therefore, effectively prepared and used biochar in water treatment has become a method to improve the efficiency and economic benefits of thermochemical processes. In this overview, we first introduced the preparation methods of different new types of biomass materials, we then classified and discussed the various modification strategies, and finally discussed the application potential of biochar material for wastewater treatment. Full article
(This article belongs to the Special Issue Advances in Wastewater Resourcezation)
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