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Water
Special Issues
Low-Carbon Technologies and Digital Solutions for Wastewater Treatment
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Low-Carbon Technologies and Digital Solutions for 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: 22 January 2025 | Viewed by 1737

Special Issue Editors

Dr. Tao Zhang

E-Mail Website
Guest Editor
College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
Interests: wastewater treatment; circular economy; nutrients recovery; sustainable waste management; biomass utilization, machine
Special Issues, Collections and Topics in MDPI journals
Dr. Alice Boarino

E-Mail Website
Guest Editor
Department of Agricultural, Forest and Food Sciences, University of Turin, 10095 Grugliasco, Italy
Interests: sustainable chemistry; nutrients recovery; biomass valorization; circular economy

Special Issue Information

Dear Colleagues,

Today, we are facing severe resource and environmental constraints. As society's demand for low-carbon and digital solutions continues to increase, the wastewater treatment industry faces enormous challenges and opportunities. In this process, the circular economy is seen as a promising path for the sustainable development of wastewater treatment. However, the carbon emissions and energy consumption generated during wastewater treatment remain a serious problem that requires us to find innovative solutions. In terms of sustainable wastewater treatment and circular economy, reducing carbon emissions and driving digital transformation are essential. Therefore, this study will focus on low-carbon technologies and digital solutions in the wastewater treatment process to promote the development of circular economy. We propose to publish a Special Issue in Water to highlight recent research in these areas.

This Special Issue aims to showcase novel, high-quality, original research articles, as well as review articles, short newsletters and/or letters focused on the decarbonization and digital transformation of wastewater.

Topics of interest include the following:

  1. Low-carbon technologies and carbon emission reduction strategies in wastewater treatment and circular economy.
  2. The application of digital technology in the sewage treatment process, such as machine learning, intelligent monitoring, big data analysis and artificial intelligence optimization.
  3. Energy self-sufficiency and energy conversion technology for sewage treatment plants.
  4. Use digital technology to optimize the wastewater treatment process, improve resource utilization efficiency and reduce energy consumption.

Dr. Tao Zhang
Dr. Alice Boarino
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

  • low-carbon technologies
  • machine learning
  • artificial intelligence
  • wastewater treatment
  • circular economy
  • biomass
  • organic waste
  • nutrient recovery

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Published Papers (1 paper)

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Research

19 pages, 7451 KiB  
Article
Phosphorus Fraction in Hydrochar from Co-Hydrothermal Carbonization of Swine Manure and Rice Straw: An Optimization Analysis Based on Response Surface Methodology
by Xiaohua Su, Tao Zhang, Jingyang Zhao, Santanu Mukherjee, Nahaa M. Alotaibi, Salah F. Abou-Elwafa, Huu-Tuan Tran and Nanthi S. Bolan
Water 2024, 16(15), 2208; https://doi.org/10.3390/w16152208 - 4 Aug 2024
Cited by 1 | Viewed by 1361
Abstract
Livestock manure and crop residues are significant sources of phosphorus. However, the ineffectiveness of current processing technologies often leads to the suboptimal recovery of this phosphorus, causing considerable resource wastage and environmental pollution. Recently, global research has increasingly been focused on the resource [...] Read more.
Livestock manure and crop residues are significant sources of phosphorus. However, the ineffectiveness of current processing technologies often leads to the suboptimal recovery of this phosphorus, causing considerable resource wastage and environmental pollution. Recently, global research has increasingly been focused on the resource recovery of organic waste materials using hydrothermal carbonization technology. This study investigated variations in phosphorus forms in the hydrochar produced from swine manure and rice straw, employing diverse hydrothermal carbonization conditions and applying the Box–Behnken response surface methodology and Hedley’s phosphorus fractionation method. The results indicated that inorganic phosphorus predominates in the hydrochar, with organic phosphorus comprising 5–30% of the total phosphorus. Furthermore, the study found that the available phosphorus content, as measured by NaHCO3 extraction, decreased as the reaction time and temperature of the hydrothermal carbonization process increased. The concentrations of H2O-P and NaHCO3-P fractions decreased with increasing reaction times and temperatures but increased with a higher swine manure-to-straw ratio. Conversely, the concentrations of NaOH-P and HCl-P fractions showed an increasing trend with rising reaction temperature, prolonging reaction time, andusing a high swine manure-to-straw ratio. Consequently, this study offers vital theoretical and practical insights into the resource utilization of livestock manure and crop straw, significantly contributing to the challenges of waste management and environmental sustainability in agriculture. Full article
(This article belongs to the Special Issue Low-Carbon Technologies and Digital Solutions for Wastewater Treatment)
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