Mitigation of ammonia inhibition in anaerobic digestion of nitrogen-rich substrates for biogas production by ammonia stripping: A review

Yellezuome, Dominic; Zhu, Xianpu; Wang, Zengzhen; Liu, Ronghou

doi:10.1016/j.rser.2021.112043

Cited by 90 publications

(30 citation statements)

References 108 publications

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“…Consequently, the organic acid production in the hydrolytic and acidogenic is balanced with subsequent utilization by acetogenic and methanogenic micro-organisms which concurs with ( Magdalena et al., 2019 ). In addition, according to ( Yellezuome et al., 2022 ) at higher retention times ammonia formation is favoured from components such as proteins which take more time thus requiring high retention time to disintegrate. This improves the buffering capacity of the bio-digester resulting in minimal variation of pH.…”

Section: Resultsmentioning

confidence: 99%

Biological acidification of pig manure using banana peel waste to improve the dissolution of particulate phosphorus: A critical step for maximum phosphorus recovery as struvite

Moyo

Simate²,

Mutsatsa³

2022

Heliyon

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Section: Resultsmentioning

confidence: 99%

Biological acidification of pig manure using banana peel waste to improve the dissolution of particulate phosphorus: A critical step for maximum phosphorus recovery as struvite

Moyo

Simate²,

Mutsatsa³

2022

Heliyon

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“…3). According to Yellezuome et al (2022), the methanogenesis process was inhibited when the total ammonia concentration was beyond 1.7 g/L. It seemed that only 40 g VSadded/L mono digested group was inhibited by ammonia accumulation at the start of the experiment, which all exceeded 2 g/L.…”

Section: Fig 3 the Development Of Vfas And Ammonia Concentration Duri...mentioning

confidence: 99%

Anaerobic co-digestion of grass, alfalfa, and red clover for methane production and the kinetic analysis

Chai

Lü

et al. 2023

BioRes

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The residual of perennials in landscape trimming and agricultural interval planting are produced massively, and they can provide an innovative way to increase anaerobic digestion efficiency via co-digestion process. In this study, the bio-methane potential (BMP) of different perennial crops (grass, alfalfa, and red clover) in various feedstock concentrations based on volatile solid (VS) and the kinetic analysis of the co-digestion process were investigated. The results showed that grass and legumes reached the highest methane yield at 5 VS/L and 20 VS/L, respectively. Co-digestion of grass and perennials had better methane production of 338 mL/g VS, which is 9.1% higher than mono-digestion. Further analysis demonstrated that VS removal efficiency of mono-legumes digestion was below 60%, while co-digestion of grass and legumes can improve VS removal efficiency dramatically. Volatile fatty acids (VFAs) and ammonia in the digestate accumulated at 40 VSadded/L. Additionally, kinetic analysis was employed to predict and evaluate the performance of anaerobic digestion, with the Cone model showing the best fitting curve.

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“…This may be due to that alkaline conditions are conducive to protein hydrolysis and leaching of more NH 4 + -N, whereas other conditions of acid-base conditioning inhibit the release of protease from microorganisms, resulting in lower NH 4 + -N concentrations in the products released from the carbon source. As the reaction time increased, the number of bacteria with good carbon source releasing function gradually increased, and more protein was converted to NH 4 + -N. Over time, strong alkaline conditions resulted in more NH 4 + -N being released into the gas phase as NH 3 due to the higher pH, leading to its relatively low concentration within the solution [23]. The effect of pH preconditioning on PO4 3− -P concentrations is shown in Figure 3, and PO4 3− -P concentrations were higher under strong acid preconditioning conditions, similar results also showed that it was easier to extract phosphorus from ash sludge under strong acid condition [24].…”

Section: Variation Characteristics Of Scod Nh4 + -N Po4 3− -P and Phmentioning

confidence: 99%

Effects of pH Adjustment on the Release of Carbon Source of Particulate Organic Matter (POM) in Domestic Sewage

et al. 2022

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The use of anaerobic hydrolytic fermentation to develop more available carbon sources from domestic sewage influent particulate organic matter (POM) has received increasing attention. However, the slow hydrolysis rate of POM limits the application of this technology. This study aimed to improve the carbon source release efficiency of POM by pH adjustment and to reveal the hydrolysis mechanism. Results showed that adjusting the initial pH of POM to 3, 9, and 11 enhanced carbon source release in the anaerobic hydrolysis fermentation process of POM. The pretreatment under pH value of 11 contributed to the highest yield and productivity of carbon source, reaching the soluble chemical oxygen demand (SCOD) of 2782 mg/L at the 4th day. The pH 3 pretreatment was more beneficial for phosphorus resource recovery, which contributed to the highest release concentration of PO43−-P, reaching 48.2 mg/L at the 3rd day, accounting for 90% of TP. Microbial community structure analysis indicated that pH 11 preconditioning promoted the enrichment of proteolytic bacteria (Proteocatella and Proteiniclasticum) and polysaccharide hydrolytic bacteria (Trichococcus and Acinetobacter) and inhibited the growth of acetate-consuming methanogenic archaea, which contributed to the highest carbon release of POM in domestic sewage.

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Mitigation of ammonia inhibition in anaerobic digestion of nitrogen-rich substrates for biogas production by ammonia stripping: A review

Cited by 90 publications

References 108 publications

Biological acidification of pig manure using banana peel waste to improve the dissolution of particulate phosphorus: A critical step for maximum phosphorus recovery as struvite

Biological acidification of pig manure using banana peel waste to improve the dissolution of particulate phosphorus: A critical step for maximum phosphorus recovery as struvite

Anaerobic co-digestion of grass, alfalfa, and red clover for methane production and the kinetic analysis

Effects of pH Adjustment on the Release of Carbon Source of Particulate Organic Matter (POM) in Domestic Sewage

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