Inhibition mitigation and ecological mechanism of mesophilic methanogenesis triggered by supplement of ferroferric oxide in sulfate-containing systems

Liu, Yu; Gu, Mengqi; Yin, Qidong; Wu, Guangxue

doi:10.1016/j.biortech.2019.121546

Cited by 57 publications

(8 citation statements)

References 46 publications

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“…On the other hand, for the coupling of sulfate removal and CH 4 production, conductive materials were reported to be able to alleviate the inhibition of sulfate on methanogenesis, which can enhance the diverse biogeochemical reactions. Liu et al 17 found that the addition of conductive materials could re-enrich syntrophic partners inactivated by sulfate. This new syntrophic community could efficiently produce CH 4 in sulfate-containing environment.…”

Section: Microbial Niche Nexus Besides Infrastructure Construction Tomentioning

confidence: 99%

Microbial niche nexus sustaining biological wastewater treatment

Yin

2020

npj Clean Water

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Biological wastewater treatment has developed for more than 100 years, and new concepts about future wastewater treatment have been put forward worldwide. Environmental biotechnology is still the key contributor for wastewater management. However, these biotechnologies are facing challenges due to stringent discharging standards and the removal of emerging pollutants. Here, a new concept of microbial niche nexus sustaining biological wastewater treatment was proposed, which can achieve the efficient removal of known and unknown pollutants through tuning microbial niches to accommodate diverse microbial communities. Microbial niche nexus could be applied to solve emerging challenges besides infrastructure construction. In addition, the coenrichment of r/K-strategists and the establishment of microenvironments with substrate gradients could be adopted for the design and operation of biological wastewater treatment processes. Finally, future development and perspectives were presented through aspects of microbial enrichment, microbial function and metabolism identification, system design and operation control, and new technology development and application.

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Section: Microbial Niche Nexus Besides Infrastructure Construction Tomentioning

confidence: 99%

Microbial niche nexus sustaining biological wastewater treatment

Yin

2020

npj Clean Water

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“…However, some studies have demonstrated that DIET mediated by conductive materials was expected to promote methane production in anaerobic digestion system treating organic wastewater with a high concentrations of sulfate ( Li et al, 2017 ; Jin et al, 2019 ). The potential mechanism may be that methanogens through DIET metabolic pathway are more competitive to substrates than sulfate-reducing bacteria ( Liu et al, 2019 ).…”

Section: Improvements Of Anaerobic Digestion Performancesmentioning

confidence: 99%

Improvement of Direct Interspecies Electron Transfer via Adding Conductive Materials in Anaerobic Digestion: Mechanisms, Performances, and Challenges

Fang

Chang

et al. 2022

Front. Microbiol.

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Anaerobic digestion is an effective and sustainable technology for resource utilization of organic wastes. Recently, adding conductive materials in anaerobic digestion to promote direct interspecies electron transfer (DIET) has become a hot topic, which enhances the syntrophic conversion of various organics to methane. This review comprehensively summarizes the recent findings of DIET mechanisms with different mediating ways. Meanwhile, the influence of DIET on anaerobic digestion performance and the underlying mechanisms of how DIET mediated by conductive materials influences the lag phase, methane production, and system stability are systematically explored. Furthermore, current challenges such as the unclear biological mechanisms, influences of non-DIET mechanisms, limitations of organic matters syntrophically oxidized by way of DIET, and problems in practical application of DIET mediated by conductive materials are discussed in detail. Finally, the future research directions for practical application of DIET are outlined.

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“…Several insights suggest the occurrence of another mechanism. For example, to study the contribution of electrodes and electric current to process stability and methane production during the electro-fermentation of food waste, the authors demonstrated that Geobacter occurred at the cathode with a low abundance [61]. Electric current stimulated the growth of hydrogenotrophic methanogens, but acetotrophic Methanosaeta still made up 27.6-61.9% of archaeal community.…”

Section: Acetoclastic Methanogenesis Versus Diet-co 2 Reductionmentioning

confidence: 99%

“…Conductive materials also enhance the resistance to sulfate stress in anaerobic fermentation. For example, adding Fe 3 O 4 alleviated sulfate toxicity during mesophilic methanogenesis [61].…”

Section: Ph Buffering Capacitymentioning

confidence: 99%