Industrial Composting of Sewage Sludge: Study of the Bacteriome, Sanitation, and Antibiotic-Resistant Strains

López-González, Juan A.; Estrella-González, María J.; Lerma-Moliz, R.; Jurado, M.M.; Suárez‐Estrella, F.; López, M.J.

doi:10.3389/fmicb.2021.784071

Cited by 10 publications

(4 citation statements)

References 73 publications

(76 reference statements)

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“…However, in the first 6 days of composting, the abundance of Bacteroidetes gradually decreased in the two treatments, owing to the high pile turnover frequency. Bacteroidetes are anaerobic microorganisms, and oxygen supplementation can reduce their metabolic activities ( López-González et al, 2021 ). The decrease in the abundance of Bacteroidetes in the CK+Biochar treatment was higher than that in the CK treatment, because biochar improved the pore structure of the pile and promoted the reaction of microorganisms to air contact.…”

Section: Resultsmentioning

confidence: 99%

Effect of biochar on antibiotics and antibiotic resistance genes variations during co-composting of pig manure and corn straw

Tong

Liu

Tian

et al. 2022

Front. Bioeng. Biotechnol.

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Pig manure is a reservoir of antibiotics and antibiotic resistance genes (ARGs). The effect of biochar on the variations in physicochemical properties, bacterial communities, antibiotics, ARGs, and mobile genetic elements (MGEs) of compost product during co-composting of pig manure and corn straw have been investigated in this study. Compared with the control treatment (CK), biochar addition accelerated the increase in pile temperature and prolonged the high temperature period (>55°C) for 2 days. Under biochar influence, organic matter degradation, NH4+-N conversion and NO3−-N production was accelerated, and dissolved total organic carbon (DOC) and dissolved total nitrogen (DTN) utilization by microorganisms were enhanced. Biochar addition altered the microbial community and promoted the vital activity of Actinobacteria in the later composting stage. The antibiotics removal efficiency (except danofloxacin and enrofloxacin) was accelerated in the early composting stage (1–14 days) by biochar addition, the pile temperature had a positive effect on antibiotics removal, and the total antibiotics removal efficiency in CK and CK+Biochar treatments was 69.58% and 78.67% at the end of the composting process, respectively. The absolute abundance of most of the ARGs in the CK+Biochar treatment was lower than that in the CK treatment during composting, and the ARGs removal mainly occurred in the early (1–14 days) and later (28–50 days) stages. Biochar addition reduced the absolute abundance of MGEs (intI1, intI2) in the compost product, and most of the ARGs had a significant positive correlation with MGEs. Network analysis and redundancy analysis showed that ARGs and MGEs occurred in various host bacteria (Firmicutes, Actinobacteria, Bacteroidetes, Proteobacteria, and Halanaerobiaeota), and that DTN and NH4+-N are the main factors regulating the changes in bacterial communities, antibiotics, ARGs, and MGEs during composting. Moreover, MGEs contributed the most to the variation in ARGs. In summary, biochar addition during composting accelerated antibiotics removal and inhibited accumulation and transmission of ARGs. The results of this study could provide theoretical and technical support for biochar application for antibiotics and ARGs removal during livestock and poultry manure composting.

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Section: Resultsmentioning

confidence: 99%

Effect of biochar on antibiotics and antibiotic resistance genes variations during co-composting of pig manure and corn straw

Tong

Liu

Tian

et al. 2022

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

show abstract

“…ARGs and MGEs increase was observed in a conventional thermophilic phase without any membrane and atmospheric microbial contamination was postulated to be responsible. Industrial composting of sewage sludge reduced ARGs through reduction of the population of ARB ( Lopez-Gonzalez et al., 2021 ). Bulking agents were implicated in the abundance of ARB in composting in a study using corn stalk.…”

Section: Compost and Biochar Productionmentioning

confidence: 99%

Biochar can mitigate co-selection and control antibiotic resistant genes (ARGs) in compost and soil

Ejileugha¹

2022

Heliyon

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“…In practice, the addition of lime to sewage sludge to adjust the pH to ca. 10 and high-energy radiation are commonly used [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Study of Compost Based on Sewage Sludge and Different Structural Materials

Kosobucki

2024

Biomass

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The characterization of compost compositions on the basis of sewage sludge and structural materials (straw, sawdust, bark) composting is described. A comparison of the methods most often used for composting and characterization of structural materials is also presented. Sewage sludge and structural materials were mixed in different ratios and composted in piles (laboratory scale) for 3 months. During this time, the composting process was controlled using standard methods. The bioavailability of some xenobiotics in an agriculture experiment (using beans) was also investigated.

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Industrial Composting of Sewage Sludge: Study of the Bacteriome, Sanitation, and Antibiotic-Resistant Strains

Cited by 10 publications

References 73 publications

Effect of biochar on antibiotics and antibiotic resistance genes variations during co-composting of pig manure and corn straw

Effect of biochar on antibiotics and antibiotic resistance genes variations during co-composting of pig manure and corn straw

Biochar can mitigate co-selection and control antibiotic resistant genes (ARGs) in compost and soil

Study of Compost Based on Sewage Sludge and Different Structural Materials

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