Variation of antibiotics in sludge pretreatment and anaerobic digestion processes: Degradation and solid-liquid distribution

Zhang, Xiangyu; Li, Ruying

doi:10.1016/j.biortech.2018.01.100

Cited by 89 publications

(14 citation statements)

References 45 publications

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“…Although, Fenton process, ozonation, and other advanced oxidation processes are found effective for the reduction of OTC [6,7], they have certain shortcomings including high chemical oxygen demand (COD) and high level of suspended solids in the residue [8]. Since antibiotics are prone to hydrolysis at elevated temperatures, hydrothermal treatment may be a suitable alternative technology for their successful removal from the residue [9]. At present, hydrothermal pretreatment has been applied in the treatment of waste mother liquor from the antibiotic fermentation process [10].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal pretreatment of oxytetracycline fermentation residue: Removal of oxytetracycline and increasing the potential for anaerobic digestion

Awad

Tian

Zhang

et al. 2020

Environmental Engineering Research

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The presence of high level of antibiotics in the antibiotic fermentation residue is one of the main reasons that prevent their direct disposal or further use as a resource. In this study, the feasibility of using the hydrothermal pretreatment for removing oxytetracycline (OTC) from its fermentation residue and enhancing anaerobic digestion was evaluated under different temperatures i.e. 110, 130, 150 and 170°C. The results showed that the removal rate of OTC increased as a function of temperature, and hydrothermal treatment at 130°C for 5 min was found sufficient to reduce the concentration of OTC from 3.9 mg/g to less than the detection limit (i.e., 0.25 ng/g). Biochemical methane potential tests showed that the cumulative methane production over 23 d was 73.7, 215.9, 656.8, and 439.0NmL CH4/gVS for the raw residue and the residue treated at 130, 150, and 170°C for 5 min, respectively. At the same time, the abundances of tetracycline resistance genes were reduced by hydrothermal treatments followed by anaerobic digestion. Conclusively, it is suggested that hydrothermal treatment at 150°C for 5 min was found beneficial for OTC fermentation residues ensuring the removal of OTC and further use of the residue for anaerobic digestion.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal pretreatment of oxytetracycline fermentation residue: Removal of oxytetracycline and increasing the potential for anaerobic digestion

Awad

Tian

Zhang

et al. 2020

Environmental Engineering Research

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“…For instance, Table 1 shows that antibiotic concentrations range from 0.046 to 4.552 µg/L in medical wastewater and from 0 to 130.67 µg/L in livestock wastewater. Tetracyclines, β-lactams, sulfonamides and quinolones are found in medical and livestock wastewater (Wei et al, 2011;Zhang and Li, 2018). Medical wastewater also contains macrolides, which are mostly used in human clinical treatments (Wei et al, 2011;Li et al, 2013).…”

Section: Antibiotic Utilization Taking China As An Examplementioning

confidence: 99%

“…Medical wastewater also contains macrolides, which are mostly used in human clinical treatments (Wei et al, 2011;Li et al, 2013). However, compared with medical wastewater, animal wastewater contains higher levels of tetracyclines and sulfonamides, which are used to prevent and treat livestock diseases (Zhang and Li, 2018;Sun et al, 2019). The antibiotic contents in wastewater are variable in different regions (Table 1), such as 1.41 µg/L in Henan and less than 0.38 µg/L in Xinjiang for tetracycline.…”

Section: Antibiotic Utilization Taking China As An Examplementioning

confidence: 99%

Effect of Antibiotics on the Microbial Efficiency of Anaerobic Digestion of Wastewater: A Review

et al. 2021

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Recycling waste into new materials and energy is becoming a major challenge in the context of the future circular economy, calling for advanced methods of waste treatment. For instance, microbially-mediated anaerobic digestion is widely used for conversion of sewage sludge into biomethane, fertilizers and other products, yet the efficiency of microbial digestion is limited by the occurrence of antibiotics in sludges, originating from drug consumption for human and animal health. Here we present antibiotic levels in Chinese wastewater, then we review the effects of antibiotics on hydrolysis, acidogenesis and methanogenesis, with focus on macrolides, tetracyclines, β-lactams and antibiotic mixtures. We detail effects of antibiotics on fermentative bacteria and methanogenic archaea. Most results display adverse effects of antibiotics on anaerobic digestion, yet some antibiotics promote hydrolysis, acidogenesis and methanogenesis.

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“…The primary remediation mechanisms of antibiotics involve adsorption, biodegradation, hydrolysis, and volatilization (Gurmessa et al 2020). Veterinary antibiotics like β-lactams, macrolides, tetracyclines, fluoroquinolones, and trimethoprim mainly follow the adsorption mechanism, whereas sulfonamides type antibiotics are generally removed along with the biodegradation mechanism (Li and Zhang 2010;Jia et al 2018;Sui et al 2018;Zhang and Li 2018).…”

Section: Transformationsmentioning

confidence: 99%

A Review of Veterinary Antibiotic Pollution in the Agro-Environment of Pakistan: Alarm Bells Are Ringing

Sardar¹

2021

IJAB

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Veterinary antibiotics (VAs) are widely used in Pakistan for growth enhancement, production, and in the prevention and treatment of infectious diseases in the livestock and poultry industry. Their emergence into the agro-environment began during the resource utilization of farmyard and poultry manure. However, these bioactive organic pollutants are non-degradable in the natural environment and can be uptaken by plants, eventually ending up in the human food chain. Despite the danger these antibiotics pose, unfortunately, it is an issue that still remains underreported, especially in Pakistan. As such, this review critically summarizes the current consumption, exposure pathways, strategies for controlling dissemination, and serious environmental concerns associated with VAs. Additionally, the fate of antibiotics in the dry arid climate of Pakistan is thoroughly explained along with the lack of monitoring and strict legislation in developing countries. It is reported that antibiotic consumption negatively impacts raw manure, hence suggestions such as limiting the consumption of antibiotics from the source, proper disposal of farmyard manure with effective technologies, and remediation techniques are introduced. Finally, the authors highlight the importance of farmer's education and awareness campaigns in the pollution control of antibiotics, as the problem can only be properly addressed with the cooperation of government agencies, companies, and involved stakeholders. © 2021 Friends Science Publishers

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Variation of antibiotics in sludge pretreatment and anaerobic digestion processes: Degradation and solid-liquid distribution

Cited by 89 publications

References 45 publications

Hydrothermal pretreatment of oxytetracycline fermentation residue: Removal of oxytetracycline and increasing the potential for anaerobic digestion

Hydrothermal pretreatment of oxytetracycline fermentation residue: Removal of oxytetracycline and increasing the potential for anaerobic digestion

Effect of Antibiotics on the Microbial Efficiency of Anaerobic Digestion of Wastewater: A Review

A Review of Veterinary Antibiotic Pollution in the Agro-Environment of Pakistan: Alarm Bells Are Ringing

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