Potential of anaerobic co-fermentation in wastewater treatments plants: A review

Perez-Esteban, N.; Vinardell, Sergi; Vidal-Antich, C.; Peña-Picola, S.; Chimenos, J.M.; Peces, Miriam; Dosta, J.; Astals, Sergi

doi:10.1016/j.scitotenv.2021.152498

Cited by 45 publications

(7 citation statements)

References 102 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Meeting the difficulty of achieving a high level of biogas efficiency is not possible if the anaerobic digestion process is carried out using only one substrate. New trends indicate using two or more substrates, most often in the co-digestion process, thus increasing plant profitability [51,52].…”

Section: Types and Potential Of Raw Materials Used For Biogas Productionmentioning

confidence: 99%

Characteristics of Substrates Used for Biogas Production in Terms of Water Content

2023

View full text Add to dashboard Cite

New technologies based on the anaerobic digestion process make it possible to manage problematic waste. Methane efficiency depends largely on the level of the hydration of the substrates used for biogas production and their ability to decompose easily. The aim of this study was to present the current state of knowledge and practices in substrate hydration characteristics, focusing on pretreatment methods as the preferred method for improving efficiency. The paper discusses issues related to the degree of hydration of substrates in the context of their use in biogas plants. Reference was also made to topics related to the transportation and logistics of raw material supply regarding environmental impact. Biogas plant projects should be expanded to include an element related to assessing the impact of raw material deliveries on the immediate environment. Previous papers have not sufficiently analyzed the aspect related to the hydration of substrates used in anaerobic digestion processes. The presented and discussed research results can be implemented to optimize biogas plant water management processes. By replacing standard feedstock transportation methods with a pipeline, the environmental impact can be reduced by nearly ten times.

show abstract

Section: Types and Potential Of Raw Materials Used For Biogas Productionmentioning

confidence: 99%

Characteristics of Substrates Used for Biogas Production in Terms of Water Content

2023

View full text Add to dashboard Cite

show abstract

“…It has been con rmed that many parameters have in uence on the production of VFAs and ethanol such as pH [8], temperature [9], OLR [10], inoculums [11] and substrates [12] etc. However, the operational pH has been reported as the key factor determining the fermentative products [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

High rate acidogenic fermentation in an up-flow anaerobic sludge bed reactor at extremely low pH

Zheng,

Wu,

Zheng

et al. 2024

Preprint

View full text Add to dashboard Cite

Volatile fatty acid (VFA) platform has drawn much attention and it has been confirmed that VFA production by mixed-culture acidogenic fermentation at low pH has several advantages. The metabolic mechanisms and stability of acidogenic fermentation at low pH was investigated by a continuous stirred tank reactor (CSTR) fed with glucose with pH controlled at 4.0 (day 1–28), 5.0 (day 29–42) and 4.0(day 43–62). Results indicated lactate fermentation and ethanol fermentation coexist when pH was controlled at 4.0. Lactobacillus was the dominant bacteria. However, when pH in CSTR reactor was increased and controlled at 5.0, the fermentative type changed. In order to improve the efficiency of acidogenic fermentation at low pH, a up-flow anaerobic sludge bed (UASB) reactor was operated with glucose as feeding material and the organic loading rate (OLR) of UASB gradually increased and eventually was high up to 42 g/(L.d). When operated at OLR of 42 g/(L.d) and HRT of 4 h, the UASB reactor was found with a higher VFAs yields of 16.4 gCOD/(L.d), which was much higher than CSTR reactor. In addition, acidogenic granular sludge successfully appeared in UASB reactor at extremely low pH of 3.2~4.0. Lactobacillus was also predominant in the acidogenic granular sludge of UASB reactor, which was similar with CSTR reactor, however, biohydrogen-producing bacteria also took large proportion.

show abstract

“…Research on the nitrogen metabolism pathway of activated sludge is essential for understanding wastewater treatment mechanisms ( Wilén et al, 2018 ). Tian and coworkers identified 51 phyla and nearly 900 genera by using metagenomic analysis in a full-scale A2O sludge sample from the Lianyungang sewage treatment plant in Jiangsu province of China, and successfully predicted genes and strains related to nitrogen removal ( Tian et al, 2015 ; Perez-Esteban et al, 2022 ). Additionally, previous research revealed the composition of activated sludge communities with temporal variations in a municipal sewage treatment facility over a 4-year period using metagenomic analysis ( Ju et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Revealing the functional potential of microbial community of activated sludge for treating tuna processing wastewater through metagenomic analysis

Zheng,

Liao,

Chen

et al. 2024

Front. Microbiol.

View full text Add to dashboard Cite

Reports regarding the composition and functions of microorganisms in activated sludge from wastewater treatment plants for treating tuna processing wastewater remains scarce, with prevailing studies focusing on municipal and industrial wastewater. This study delves into the efficiency and biological dynamics of activated sludge from tuna processing wastewater, particularly under conditions of high lipid content, for pollutant removal. Through metagenomic analysis, we dissected the structure of microbial community, and its relevant biological functions as well as pathways of nitrogen and lipid metabolism in activated sludge. The findings revealed the presence of 19 phyla, 1,880 genera, and 7,974 species, with Proteobacteria emerging as the predominant phylum. The study assessed the relative abundance of the core microorganisms involved in nitrogen removal, including Thauera sp. MZ1T and Alicycliphilus denitrificans K601, among others. Moreover, the results also suggested that a diverse array of fatty acid-degrading microbes, such as Thauera aminoaromatica and Cupriavidus necator H16, could thrive under lipid-rich conditions. This research can provide some referable information for insights into optimizing the operations of wastewater treatment and identify some potential microbial agents for nitrogen and fatty acid degradation.

show abstract

Potential of anaerobic co-fermentation in wastewater treatments plants: A review

Cited by 45 publications

References 102 publications

Characteristics of Substrates Used for Biogas Production in Terms of Water Content

Characteristics of Substrates Used for Biogas Production in Terms of Water Content

High rate acidogenic fermentation in an up-flow anaerobic sludge bed reactor at extremely low pH

Revealing the functional potential of microbial community of activated sludge for treating tuna processing wastewater through metagenomic analysis

Contact Info

Product

Resources

About