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Water
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Advanced Technologies for Water and Wastewater Treatment
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Advanced Technologies for Water and Wastewater Treatment

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: closed (15 June 2023) | Viewed by 3781

Special Issue Editors

Dr. Jiaxin Guo

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Guest Editor
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China
Interests: desalination and water/wastewater treatment technologies; advanced membrane fabrication by electrospinning technology; membrane distillation; conveyance systems for water/wastewater
Special Issues, Collections and Topics in MDPI journals
Dr. Xinping He

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Guest Editor Assistant
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China
Interests: block copolymer membranes; membrane-based processes for VOCs and biofuel recovery; advanced membranes for heavy metal capture; adsorptive membranes; homoporous membranes

Special Issue Information

Dear Colleagues,

Worsening environmental pollution and increasingly rigorous wastewater discharge standards have become the main challenges for the rapid development of global industry. Meanwhile, accelerating urbanization has also led to growing concern regarding fresh water supplies. To cope with these challenges and new demand, establishing advanced and novel technologies specializing in wastewater treatment, water recovery and contamination removal are urgently needed. As an attractive alternative to traditional wastewater treatment technology, membrane-based water treatment processes show unique potential for rapid separation with high selectivity and throughput. Furthermore, based on the commercially available materials in membrane preparation and the mature membrane modules design that enables their flexible application in a practical environment, the large-scale implementation of membrane-based processes offers a non-invasive and effective approach for wastewater treatment. In this regard, the present Special Issue seeks to provide a platform for researchers to exchange their novel ideas and share research outcomes related to Advanced Technologies for Water and Wastewater Treatment.

Dr. Jiaxin Guo
Guest Editor

Dr. Xinping He
Guest Editor Assistant

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

  • heavy metal capture
  • VOCs recovery
  • homosporous membranes membrane distillation
  • pervaporation
  • membrane-based processes
  • advanced physicochemical and biological processes
  • industrial wastewater treatment
  • advanced desalination system
  • oil–water separation
  • micropollutants removal
  • landfill leachate treatment

Published Papers (2 papers)

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Research

22 pages, 6068 KiB  
Article
An Alternating, Current-Induced Electromagnetic Field for Membrane Fouling and Scaling Control during Desalination of Secondary Effluent from Municipal Wastewater
by Juliano Penteado de Almeida, Zachary Stoll and Pei Xu
Water 2023, 15(12), 2234; https://doi.org/10.3390/w15122234 - 14 Jun 2023
Cited by 1 | Viewed by 1600
Abstract
Membrane treatment of secondary effluent for reuse applications is a promising approach to expand water supplies and provide flexibility to water resources management. However, effective control of membrane fouling and scaling is crucial for cost-effective treatment and system resilience. This study compared the [...] Read more.
Membrane treatment of secondary effluent for reuse applications is a promising approach to expand water supplies and provide flexibility to water resources management. However, effective control of membrane fouling and scaling is crucial for cost-effective treatment and system resilience. This study compared the performance of antiscalants to an alternating, current-induced electromagnetic field (EMF) as an alternative pretreatment method to reverse osmosis. Compared to the no-EMF control experiments, the EMF device resulted in 13% higher water recovery and 366% lower flux decline at 60% of water recovery, along with 2–8 times lower precipitation of fouling and scaling, as evidenced by scanning electron microscope, energy dispersive X-ray spectroscopy, and chemical extraction analysis. The combination of the EMF with antiscalant was more effective for reducing membrane fouling and scaling, increasing water recoveries up to 89.3%, as compared to the EMF (67.5%) and antiscalant-only (73.6%) configurations. This is the first study to demonstrate synergistic effects of using an EMF in combination with antiscalants and could lead to lower pretreatment costs. Additional research is required to quantify the economics of this approach and to fully understand the fundamental mechanisms governing fouling and scaling control by an EMF. Full article
(This article belongs to the Special Issue Advanced Technologies for Water and Wastewater Treatment)
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15 pages, 18518 KiB  
Article
High-Temperature-Resistant Scale Inhibitor Polyaspartic Acid-Prolineamide for Inhibiting CaCO3 Scale in Geothermal Water and Speculation of Scale Inhibition Mechanism
by Jiawei Yan, Xiao Tan and Suitao Qi
Water 2023, 15(8), 1457; https://doi.org/10.3390/w15081457 - 08 Apr 2023
Viewed by 1795
Abstract
An excellent high-temperature-resistant scale inhibitor, polyaspartic acid-prolineamide (PASP-Pro), was synthesized by polysuccinimide (PSI) and L-prolineamide (L-Pro), and then characterized by 1H-NMR and FTIR analysis. The inhibition performance of PASP-Pro on CaCO3 precipitation was studied at different temperatures through static tests; at [...] Read more.
An excellent high-temperature-resistant scale inhibitor, polyaspartic acid-prolineamide (PASP-Pro), was synthesized by polysuccinimide (PSI) and L-prolineamide (L-Pro), and then characterized by 1H-NMR and FTIR analysis. The inhibition performance of PASP-Pro on CaCO3 precipitation was studied at different temperatures through static tests; at the same time, the influence of PASP-Pro on the crystallization process of CaCO3 was investigated by combining the electrical conductivity test of CaCO3 solution with different CaCO3 scale characterizations. The suitable synthesis and evaluation conditions for PASP-Pro were obtained, and a possible multi-stage scale inhibition mechanism of PASP-Pro for CaCO3 scale was then suggested. PASP-Pro has better thermal stability and high-temperature scale inhibition performance (exceeds 87% after pretreatment at 150 °C) than PASP. In addition, PASP-Pro exhibited a promising anti-scaling property by inhibiting the crystallization of CaCO3; the induction period and the nucleation period of the CaCO3 crystallization process were prolonged nearly four times. It was found from XRD patterns that vaterite, an unstable crystalline phase, gradually emerged with the addition of the scale inhibitors, and the aragonite crystals are clearly observed in SEM images. Finally, the possible multi-stage scale inhibition mechanism of PASP-based inhibitors was proposed, including coating impurities, electrostatic repulsion, and inhibiting dehydration and rearrangement of CaCO3 crystallization. Full article
(This article belongs to the Special Issue Advanced Technologies for Water and Wastewater Treatment)
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