Multi-faceted influences of biochar addition on swine manure digestion under tetracycline antibiotic pressure

Wang, Gaojun; Chu, Yuxi; Zhu, Jinglin; Li, Sheng; Liu, Guohao; Xing, Yuanyuan; Fu, Peng; Li, Qian; Chen, Rong

doi:10.1016/j.biortech.2021.126352

Cited by 21 publications

(15 citation statements)

References 36 publications

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“…160 Additionally, biochar can also function as an electron shuttle, aiding extracellular electron transport and regulating electron transfer among microbes. 72 Wang et al 167 reported that swine manure-derived biochar promoted the DIET between Anaerolineaceae and Methanosaeta in anaerobic digestion and improved the tetracycline removal, thereby alleviating the inhibition of tetracycline to methanogens. The removal efficiency of tetracycline was enhanced by 24.3−158.2% with biochar addition.…”

Section: Biotic Rolementioning

confidence: 99%

“…The removal efficiency of tetracycline was enhanced by 24.3−158.2% with biochar addition. 167 Thus, biochar plays an important role in the promotion of microbial growth and mediation of electron transfer, thereby enhancing the biodegradation of antibiotics. 168 Prolonged exposure to antibiotics may disturb the microbiome, leading to an imbalance in the entire microbial ecology and contributing to the emergence of ARB.…”

Section: Biotic Rolementioning

confidence: 99%

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Biochar-Based Strategies for Antibiotics Removal: Mechanisms, Factors, and Application

Jia,

Ou,

Khanal

et al. 2024

ACS EST Eng.

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The increasing use of antibiotics induces the spread of antibiotic-resistant genes (ARGs) in the environment, which seriously threatens the natural ecosystem and human health. Reducing antibiotics in the environment is of the utmost importance. Biochar, as a cost-effective, environmentally friendly, and carbon-rich porous material with circular economy prospects, has shown great potential in antibiotic remediation in the environment. The adsorption mechanisms (e.g., electrostatic interaction, hydrogen bonding interaction, hydrophobic interaction, π−π electron donor−acceptor (EDA) interaction, and pore diffusion) and the biotic roles (e.g., biochar as a microbial shelter, carrier, and electron mediator) synergistically promote antibiotic removal from the aqueous phase. This review critically discusses various removal mechanisms based on classes of antibiotics, the efficacy of biochar in antibiotics removal, and the influence of crucial parameters on the removal of antibiotics. Furthermore, the review provides a critical discussion on engineering the application of biochar. Finally, the review highlights the prospects and challenges of biochar application in treating antibiotic-contaminated liquid streams.

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Section: Biotic Rolementioning

confidence: 99%

Section: Biotic Rolementioning

confidence: 99%

Biochar-Based Strategies for Antibiotics Removal: Mechanisms, Factors, and Application

Jia,

Ou,

Khanal

et al. 2024

ACS EST Eng.

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“…In China, 52% of total antibiotics were used for veterinary purposes [15]. As a promising technology for livestock manure treatment, the removal of residual antibiotics from manure with AD has been widely explored [25]. Unfortunately, it had been shown that antibiotics reduce the stability and efficiency of the AD system greatly [18].…”

Section: Application Of Biochar-facilitated Diet For Alleviating Anti...mentioning

confidence: 99%

“…In addition, DIET can facilitate the bioremediation of organic contaminants in soils and waters [24]. Meanwhile, it was revealed that an efficient DIET process in AD not only decreased the inhibition of antibiotics but accelerated the syntrophic metabolism of antibiotics [25,26]. Wang et al have demonstrated that the potential DIET process contributed to enhancing the biodegradation of antibiotics and decreasing the intensive excretion of extracellular polymeric substances (EPS) under antibiotic pressures [25].…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, it was revealed that an efficient DIET process in AD not only decreased the inhibition of antibiotics but accelerated the syntrophic metabolism of antibiotics [25,26]. Wang et al have demonstrated that the potential DIET process contributed to enhancing the biodegradation of antibiotics and decreasing the intensive excretion of extracellular polymeric substances (EPS) under antibiotic pressures [25]. At present, three hypotheses have been proposed for the electron transfer pathway in DIET consortia (Figure 1), i.e., electron transfer between microbial species via outer-membrane c-type cytochromes, conductive pili, and/or conductive materials [27,28].…”

Section: Introductionmentioning

confidence: 99%

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Biochar Facilitated Direct Interspecies Electron Transfer in Anaerobic Digestion to Alleviate Antibiotics Inhibition and Enhance Methanogenesis: A Review

Zhang

Deng

Liu

et al. 2023

IJERPH

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Efficient conversion of organic waste into low-carbon biofuels such as methane through anaerobic digestion (AD) is a promising technology to alleviate energy shortages. However, issues such as inefficient methane production and poor system stability remain for AD technology. Biochar-facilitated direct interspecies electron transfer (DIET) has recently been recognized as an important strategy to improve AD performance. Nonetheless, the underlying mechanisms of biochar-facilitated DIET are still largely unknown. For this reason, this review evaluated the role of biochar-facilitated DIET mechanism in enhancing AD performance. First, the evolution of DIET was introduced. Then, applications of biochar-facilitated DIET for alleviating antibiotic inhibition and enhancing methanogenesis were summarized. Next, the electrochemical mechanism of biochar-facilitated DIET including electrical conductivity, redox-active characteristics, and electron transfer system activity was discussed. It can be concluded that biochar increased the abundance of potential DIET microorganisms, facilitated microbial aggregation, and regulated DIET-associated gene expression as a microbial mechanism. Finally, we also discussed the challenges of biochar in practical application. This review elucidated the role of DIET facilitated by biochar in the AD system, which would advance our understanding of the DIET mechanism underpinning the interaction of biochar and anaerobic microorganisms. However, direct evidence for the occurrence of biochar-facilitated DIET still requires further investigation.

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An overview of the occurrence, impact of process parameters, and the fate of antibiotic resistance genes during anaerobic digestion processes

Pourrostami Niavol,

Bordoloi,

Suri

2024

Environ Sci Pollut Res

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Antibiotic resistance genes (ARGs) have emerged as a significant global health threat, contributing to fatalities worldwide. Wastewater treatment plants (WWTPs) and livestock farms serve as primary reservoirs for these genes due to the limited efficacy of existing treatment methods and microbial adaptation to environmental stressors. Anaerobic digestion (AD) stands as a prevalent biological treatment for managing sewage sludge and manure in these settings. Given the agricultural utility of AD digestate as biofertilizers, understanding ARGs’ fate within AD processes is essential to devise effective mitigation strategies. However, understanding the impact of various factors on ARGs occurrence, dissemination, and fate remains limited. This review article explores various AD treatment parameters and correlates to various resistance mechanisms and hotspots of ARGs in the environment. It further evaluates the dissemination and occurrence of ARGs in AD feedstocks and provides a comprehensive understanding of the fate of ARGs in AD systems. This review explores the influence of key AD parameters such as feedstock properties, pretreatments, additives, and operational strategies on ARGs. Results show that properties such as high solid content and optimum co-digestion ratios can enhance ARG removal, while the presence of heavy metals, microplastics, and antibiotics could elevate ARG abundance. Also, operational enhancements, such as employing two-stage digestion, have shown promise in improving ARG removal. However, certain pretreatment methods, like thermal hydrolysis, may exhibit a rebounding effect on ARG levels. Overall, this review systematically addresses current challenges and offers future perspectives associated with the fate of ARGs in AD systems. Graphical Abstract

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Multi-faceted influences of biochar addition on swine manure digestion under tetracycline antibiotic pressure

Cited by 21 publications

References 36 publications

Biochar-Based Strategies for Antibiotics Removal: Mechanisms, Factors, and Application

Biochar-Based Strategies for Antibiotics Removal: Mechanisms, Factors, and Application

Biochar Facilitated Direct Interspecies Electron Transfer in Anaerobic Digestion to Alleviate Antibiotics Inhibition and Enhance Methanogenesis: A Review

An overview of the occurrence, impact of process parameters, and the fate of antibiotic resistance genes during anaerobic digestion processes

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