Fermentation of Organic Waste for High-Value-Added Product Production—2nd Edition

A special issue of Fermentation (ISSN 2311-5637). This special issue belongs to the section "Industrial Fermentation".

Deadline for manuscript submissions: 28 February 2026 | Viewed by 903

Special Issue Editor


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School of Environment and Ecology, Jiangnan University, No. 1800, Lihu Avenue, Wuxi City, China
Interests: anaerobic fermentation technology and membrane bioreactors
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Special Issue Information

Dear Colleagues,

With the rapid development of the global economy, organic waste is sharply increasing. However, traditional treatment technologies present many issues, such as the low added value of products. Therefore, the development of high value conversion technologies for organic waste is promising. The main purpose of this Special Issue is to report novel technologies and new principles of the high-added-value biotransformation of organic waste via fermentation, or to review the relevant technologies and principles. The scope of this Special Issue mainly includes anaerobic or aerobic fermentation of organic waste to produce high-value-added products, including volatile fatty acids, medium chain fatty acids, polyhydroxyalkanoates, etc.

Prof. Dr. Hongbo Liu
Guest Editor

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Keywords

  • fermentation
  • organic waste
  • sewage sludge
  • food waste
  • algae
  • agricultural straw
  • brewery wastewater
  • food wastewater
  • slaughterhouse wastewater
  • volatile fatty acids
  • medium-chain fatty acids
  • polyhydroxyalkanoates (PHA)

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Published Papers (2 papers)

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Research

14 pages, 2505 KB  
Article
Coupling Granular Activated Carbon with Waste Iron Scraps Enhances Anaerobic Digestion of PBAT Wastewater: Performance Improvement and Mechanistic Insights
by Chunhua He, Jingjing Wen, Zhiqiang Huang, Qilong Jin, Ziyao Li, Hua Zhang, Houyun Yang, Jian Huang, Wei Wang and Hao Hu
Fermentation 2025, 11(11), 614; https://doi.org/10.3390/fermentation11110614 - 28 Oct 2025
Abstract
Poly(butylene adipate-co-terephthalate) (PBAT) wastewater, characterized by high chemical oxygen demand (COD) and acidity, poses significant challenges to anaerobic digestion (AD) due to toxicity and volatile fatty acids (VFAs) accumulation. This study coupled granular activated carbon (GAC) and waste iron scraps (WISs) to synergistically [...] Read more.
Poly(butylene adipate-co-terephthalate) (PBAT) wastewater, characterized by high chemical oxygen demand (COD) and acidity, poses significant challenges to anaerobic digestion (AD) due to toxicity and volatile fatty acids (VFAs) accumulation. This study coupled granular activated carbon (GAC) and waste iron scraps (WISs) to synergistically enhance AD performance. Batch experiments demonstrated that, compared with the control, the GAC/WISs group achieved a COD removal efficiency of 53.18% and a methane production of 207.53 ± 5.80 mL/g COD, which were 5.48- and 12.14-fold increases, respectively, while reducing the accumulation of total VFAs by 98.48% (to 15.09 mg/L). Mechanistic analysis revealed that GAC adsorbed inhibitors and enriched methanogens, while WISs buffered pH and promoted direct interspecies electron transfer (DIET) through hydrogenotrophic methanogenesis. Metagenomic sequencing showed shifts in microbial communities, with enrichment of syntrophic bacteria (Syntrophobacter) and functional genes (pta, bcd, and pccA), indicating metabolic reprogramming. This study provided a theoretical foundation and engineering strategy for the anaerobic treatment of PBAT wastewater. Full article
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14 pages, 3172 KB  
Article
Transforming Tilapia into Indoleacetic Acid-Containing Biostimulants: Synergistic Effect of Enzymolysis and Multi-Strain Fermentation
by Hanyi Xie, Bin Zhong, Qimin Zhang, Xi Hu, Xuesen Xia, Hong Xie and Zhenqiang Wu
Fermentation 2025, 11(9), 525; https://doi.org/10.3390/fermentation11090525 - 8 Sep 2025
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Abstract
Following new trends in green development, many studies have focused on the high-value utilization of fish resources through green biological processes. This study innovatively introduced a one-step process of mixed strain–enzyme synergy (MES) with which to prepare tilapia hydrolysates and explored the synergistic [...] Read more.
Following new trends in green development, many studies have focused on the high-value utilization of fish resources through green biological processes. This study innovatively introduced a one-step process of mixed strain–enzyme synergy (MES) with which to prepare tilapia hydrolysates and explored the synergistic effects of strains and enzymes on both the protein hydrolysis process and its products’ characteristics via comparative experiments. Further, soybean was used as a model crop to verify the agronomic effects of the hydrolysates. The addition of exogenous papain increased hydrolysis by 31.94% compared to the fermentation-only group. Peptides and amino acids contents in the mixed strains were higher than those in the single fermentation process (p < 0.05), while 8.46 mg/L of indoleacetic acid was produced through fermentation. Hydrolysates promoted the growth of lateral roots in soybean seedlings (p < 0.05) via the use of a 2500-fold dilution of the biostimulant, increasing the root area and stem length and reducing the sugar content of soybean seedlings by 1.59-, 1.44- and 1.69-fold compared to those in Hoagland’s nutrient solution. These results lay a foundation for the biological preparation of biostimulants for hydroponic vegetables through the utilization of fish waste resources, aligning with green development goals. Full article
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