Biomass Conversion and Organic Waste Utilization in Wastewater

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Toxicity Reduction and Environmental Remediation".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 2646

Special Issue Editors


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Guest Editor
School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
Interests: bioenergy; bioelectricity; anaerobic ammonium oxidation; wastewater treatment; nitrogen removal
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Guest Editor
School of Ecology and Environment, Zhengzhou University, Zhengzhou, China
Interests: anaerobic biological treatment and recycling of sewage; industrial wastewater treatment; bioenergy

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Guest Editor
Research Center for Eco-environmental Engineering, DongGuan University of technology, Guangdong 523419, China
Interests: ammonium recovery; non-biodegradable pollutants removal; electrocatalysis technology

Special Issue Information

Dear Colleagues,

We invite you to contribute to this Special Issue, entitled “Biomass Conversion and Organic Waste Utilization in Wastewater”, where we will publish papers discussing new techniques and methods for biomass conversion and organic waste utilization in wastewater areas, as well as new discoveries about the mechanisms and means of controlling of this process. This Special Issue will serve as a platform for cutting-edge articles and an updated forum for scientists to exchange knowledge and ideas.The concept of the circular economy has gained significant global traction in the past decade because it emphasizes sustainable development principles. As a result, it is crucial to shift from end-of-pipe approaches to integrated resource recovery, changing the perception of waste streams from sources of pollution to valuable resource pools. The management of high-concentration organic wastewater is a significant global issue, and its mishandling will lead to substantial environmental problems. However, this type of wastewater also has considerable potential within the circular economy, as it can extract various scarce resources such as water, energy, biofuels, fertilizers, and biopolymers. It is important to note that most current research primarily focuses on improving the removal efficiency of pollutants in high-concentration organic wastewater treatment, neglecting resource recovery. Therefore, wastewater treatment should prioritize the development of technologies that not only ensure adequate treatment of high-concentration organic wastewater but also enable resource recovery throughout the treatment process.

Dr. Tingting Zhu
Dr. Zisheng Zhao
Dr. Lihui Yang
Guest Editors

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Keywords

  • organic wastewater
  • resource recovery
  • biomass conversion
  • added value products
  • energy recovery

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Published Papers (2 papers)

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Research

13 pages, 2792 KiB  
Article
Exploring the Molecular Composition of Dissolved Organic Matter and Its Connection to Microbial Communities in Industrial-Scale Anaerobic Digestion of Chicken Manure
by Juan Hu, Yurui Zeng, Aibin Hu and Xiaofeng Wang
Toxics 2025, 13(1), 49; https://doi.org/10.3390/toxics13010049 - 10 Jan 2025
Viewed by 547
Abstract
Anaerobic digestion (AD) technology offers significant advantages in addressing environmental issues arising from the intensification of livestock production since it enables waste reduction and energy recovery. However, the molecular composition of dissolved organic matter (DOM) and its linkages to microbial biodiversity during the [...] Read more.
Anaerobic digestion (AD) technology offers significant advantages in addressing environmental issues arising from the intensification of livestock production since it enables waste reduction and energy recovery. However, the molecular composition of dissolved organic matter (DOM) and its linkages to microbial biodiversity during the industrial-scale AD process of chicken manure (CM) remains unclear. In this study, the chemical structure of CM digestate-derived DOM was characterized by using multi-spectroscopic techniques and ultrahigh-resolution mass spectrometry, and the microbial composition was detected by using 16S rRNA gene sequencing. The results revealed that the DOM contained abundant free amino acids and protein-like compounds but fewer humic-like substances, identified as lignin/carboxylate-rich alicyclic molecules, lipids, and proteins/aliphatic compounds featuring enriched S5–6O1 and N1–5OX fragments. In addition, the 16S rRNA results revealed microorganisms that were centered on metabolic function in the production of volatile fatty acids, H2S/CH4, and the hydrolysis reaction in the AD process. Free amino acids and protein-like compounds were mainly associated with hydrolysis reactions and H2S production functional microorganisms. Lignin/carboxylate-rich alicyclic molecules were linked to microorganisms possessing hydrolysis reactions and, indirectly, CH4 production. This study elucidates the linkage with the microbial and molecular composition of DOM, establishing a theoretical foundation for employing AD in the disposal of CM. Full article
(This article belongs to the Special Issue Biomass Conversion and Organic Waste Utilization in Wastewater)
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15 pages, 1217 KiB  
Article
Environmental Impact of Waste Treatment and Synchronous Hydrogen Production: Based on Life Cycle Assessment Method
by Yiting Luo and Rongkui Su
Toxics 2024, 12(9), 652; https://doi.org/10.3390/toxics12090652 - 5 Sep 2024
Cited by 7 | Viewed by 1767
Abstract
Based on the life cycle assessment methodology, this study systematically analyzes the energy utilization of environmental waste through photocatalytic treatment and simultaneous hydrogen production. Using 10,000 tons of organic wastewater as the functional unit, the study evaluates the material consumption, energy utilization, and [...] Read more.
Based on the life cycle assessment methodology, this study systematically analyzes the energy utilization of environmental waste through photocatalytic treatment and simultaneous hydrogen production. Using 10,000 tons of organic wastewater as the functional unit, the study evaluates the material consumption, energy utilization, and environmental impact potential of the photocatalytic waste synchronous hydrogen production system (specifically, the synchronous hydrogen production process of 4-NP wastewater with CDs/CdS/CNU). The findings indicate that potential environmental impacts from the photochemical treatment of environmental waste and synchronous hydrogen production primarily manifest in freshwater ecological toxicity, marine ecological toxicity, terrestrial ecological toxicity, and non-carcinogenic toxicity to humans. These ecological impacts stem from the catalyst’s adsorption and metal leaching during the photo-degradation and hydrogen production processes of environmental waste. By implementing reasonable modifications and morphological refinements to the catalyst, these effects can be mitigated while achieving enhanced efficiency in environmental waste processing and simultaneous hydrogen production. The research outcomes provide valuable insights for advancing sustainable development in green technology for environmental waste treatment and energy utilization. Full article
(This article belongs to the Special Issue Biomass Conversion and Organic Waste Utilization in Wastewater)
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