Effects of oxytetracycline on mesophilic and thermophilic anaerobic digestion for biogas production from swine manure

Zhang, Jingmiao; Wu, Shuai; Xia, Ao; Ding, Feng; Huang, Yun; Zhu, Xianqing; Zhu, Xun; Liu, Qiang

doi:10.1016/j.fuel.2023.128054

Cited by 17 publications

(2 citation statements)

References 68 publications

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“…Temperature is one of the primary operating parameters [19] (p. 101377), having the ability to influence the rate of microbial growth and degradation of organic matter [20] (p. e11174). Low temperature reduces the performance of the anaerobic digestion process [21] (p. 135808), whereas variable temperature can affect the metabolic activity of methanogens, affecting methane production [22] (p. 128054). For example, the C/N ratio must be higher in the case of a higher temperature in order to minimize the chances of ammonia inhibition [23].…”

Section: Factors Influencing Anaerobic Digestionmentioning

confidence: 99%

Influence upon Biogas Production of the C/N Ratio and the Heavy Metal Incidence in the Manure Composition

Halmaciu,

Ionel,

Miutescu

2024

Preprint

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The article presents comparative results from 5 categories of animals (4 samples originating from pigs, 2 from cows, 1 from chicken, 1 from ostriches, 1 from horses, samples quantified with A, B, C, D, E, F, G, H, I). These samples were collected from large, medium and small (family) farms. The results were validated by the biogas production generated by the respective samples, using the Automatic Methane Potential Test System (AMPTS II) bio-processor. The largest amounts of biogas (2,464.5 Nml, 2,262.0 Nml) were recorded for the samples from pig farms (Sample B and Sample D), whereas the lowest values were obtained in the case of Sample A (414.1 Nml) and Sample C (558.3 Nml). The heavy metals analyzed in the article are Zn, Cu, Fe, Mn, Ca, K, As. The results corroborate that the C/N ratio can also vary to values lower than 20-30, without affecting the biogas production process, and the heavy metal content must be known especially for the full management of the wastes. All final data presented in the article are based on repeated, triplicate experiments, with less as 2% deviation between data.

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Section: Factors Influencing Anaerobic Digestionmentioning

confidence: 99%

Influence upon Biogas Production of the C/N Ratio and the Heavy Metal Incidence in the Manure Composition

Halmaciu,

Ionel,

Miutescu

2024

Preprint

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“…CO 2 has considerable potential for reuse [1] and can be bioconverted by methanogens into methane through the digestion of organic waste [2], and microbial methanogenic systems utilize such archaea primarily for CO 2 reduction and methane production. Nevertheless, the startup period of methanogenic microbial reactors is prolonged, ranging from 12 [3] to approximately 30 days [4], and the methanogen population often remains at low levels [5], especially when anaerobic digestion sludge is used as the inoculum. Consequently, this leads to a decrease in production efficiency [6].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Startup Rate of Microbial Methanogenic Systems through the Synergy of β-lactam Antibiotics and Electrolytic Cells

Zhe,

Cheng,

Cheng

et al. 2024

Microorganisms

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The slow startup and suboptimal efficiency of microbial carbon sequestration and methane-production systems have not been fully resolved despite their contribution to sustainable energy production and the reduction of greenhouse gas emissions. These systems often grapple with persistent hurdles, including interference from miscellaneous bacteria and the slow enrichment of methanogens. To address these issues, this paper examines the synergistic effect of coupling β-lactam antibiotics with an electrolytic cell on the methanogenic process. The results indicated that β-lactam antibiotics exhibited inhibitory effects on Campylobacteria and Alphaproteobacteria (two types of miscellaneous bacteria), reducing their relative abundance by 53.03% and 87.78%, respectively. Nevertheless, it also resulted in a decrease in hydrogenogens and hindered the CO2 reduction pathway. When coupled with an electrolytic cell, sufficient electrons were supplied for CO2 reduction to compensate for the hydrogen deficiency, effectively mitigating the side effects of antibiotics. Consequently, a substantial improvement in methane production was observed, reaching 0.57 mL·L−1·d−1, exemplifying a remarkable 6.3-fold increase over the control group. This discovery reinforces the efficiency of methanogen enrichment and enhances methane-production levels.

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Potentialities of semi-continuous anaerobic digestion for mitigating antibiotics in sludge

Ezzariai,

Jimenez,

Barret

et al. 2024

Environ Sci Pollut Res

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Effects of oxytetracycline on mesophilic and thermophilic anaerobic digestion for biogas production from swine manure

Cited by 17 publications

References 68 publications

Influence upon Biogas Production of the C/N Ratio and the Heavy Metal Incidence in the Manure Composition

Influence upon Biogas Production of the C/N Ratio and the Heavy Metal Incidence in the Manure Composition

Enhancing the Startup Rate of Microbial Methanogenic Systems through the Synergy of β-lactam Antibiotics and Electrolytic Cells

Potentialities of semi-continuous anaerobic digestion for mitigating antibiotics in sludge

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