Methanogenesis from wastewater stimulated by addition of elemental manganese

Qiao, Sen; Tian, Tian; Qi, Benyu

doi:10.1038/srep12732

Cited by 30 publications

(11 citation statements)

References 33 publications

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“…In the main‐stem, porewater characteristics were generally less important drivers of PMP and PMO spatial variability than sediment indices. A positive relationship between Mn and methane production was also found by Qiao et al () in anaerobic batch experiments with wastewater. Mn may serve as an alternative electron donor for the process of methanogenesis from CO 2 .…”

Section: Discussionsupporting

confidence: 78%

Sediment Properties Drive Spatial Variability of Potential Methane Production and Oxidation in Small Streams

2020

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Emissions of the potent greenhouse gas methane (CH 4 ) from streams and rivers are a significant component of global freshwater methane emissions. The distribution of CH 4 production and oxidation within stream sections and in vertical sediment profiles is not well understood, and the environmental controls on CH 4 production and emission in such systems create a significant challenge for assessing larger-scale dynamics. Here we investigate factors driving the spatial variability of sediment potential methane production (PMP) and potential methane oxidation (PMO) in a temperate stream network in Germany. PMP was highly variable, ranging from 5 × 10 −4 to 28.58 μg CH 4 gDW −1 d −1 and PMO ranged from 0.43 μg CH 4 gDW −1 d −1 to 14.41 μg CH 4 gDW −1 d −1 . Important drivers of spatial variability of PMP and PMO in the sediments of the stream main-stem were related to fine sediment fraction and organic carbon content. At smaller spatial scale, that is, in a sub-catchment stream section, the drivers were more complex and included sediment nitrogen and organic carbon content, as well as porewater dissolved organic carbon, dissolved organic matter quality, and metal concentrations. As with reservoirs and impounded rivers, fine sediment deposition and organic carbon content were found to be key controls on the spatial variability of CH 4 production and oxidation. These findings enhance our understanding of CH 4 dynamics, improve the potential for identifying CH 4 production hotspots in small streams, and provide a potential means for upscaling emission rates in larger-scale assessments.Plain Language Summary Globally, streams and rivers emit a significant amount of the highly potent greenhouse gas methane. The methane emitted from streams is mainly produced in sediments. The distribution of production and consumption in stream sections and sediment profiles is not well understood, which creates a significant challenge for estimating, for example, regional methane emissions from streams and rivers. We investigated possible factors controlling the variability from site to site and different depths of methane production and consumption in sediments of a stream network in south-west Germany. Sediment properties, the amount of fine sediment and organic carbon content, were key drivers of this variability in the main stream. In a smaller side arm of the main stream, the drivers were more complex, including nitrogen and organic carbon content of the sediment, but also porewater dissolved organic carbon, dissolved organic matter quality, and metals. As for reservoirs and dammed rivers, the accumulation of fine sediments and organic carbon content was found to be key controls of sediment methane production and consumption. These findings enhance our understanding of methane dynamics, improve the potential for identifying methane production hotspots in small streams, and provide a potential means for upscaling emission rates in larger-scale assessments.

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Section: Discussionsupporting

confidence: 78%

Sediment Properties Drive Spatial Variability of Potential Methane Production and Oxidation in Small Streams

2020

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“…Increased Zn levels have also been shown to stimulate CH4 production in tropical alluvial soils under rice production (Mishra et al 1999). Mn has been shown to stimulate methanogenesis in an anaerobic digester system by acting as an electron donor (Qiao et al 2015), and this has also been shown for Zn (Belay & Daniels 1990). We respectively.…”

Section: This Included Methanogens In the Methanobacteria Methanocelmentioning

confidence: 92%

Belowground changes to community structure alter methane-cycling dynamics in Amazonia

Meyer

Morris

Webster

et al. 2020

Preprint

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Amazonian rainforest is undergoing increasing rates of deforestation, driven primarily by cattle pasture expansion. Forest-to-pasture conversion has been associated with changes to ecosystem processes, including substantial increases in soil methane (CH4) emission. The drivers of this change in CH4 flux are not well understood. To address this knowledge gap, we measured soil CH4 flux, environmental conditions, and belowground microbial community attributes across a land use change gradient (old growth primary forest, cattle pasture, and secondary forest regrowth) in two Amazon Basin regions. Primary forest soils exhibited CH4 uptake at modest rates, while pasture soils exhibited CH4 emission at high but variable rates. Secondary forest soils exhibited low rates of CH4 uptake, suggesting that forest regrowth following pasture abandonment could reverse the CH4 sink-tosource trend. While few environmental variables were significantly associated with CH4 flux, we identified numerous microbial community attributes in the surface soil that explained substantial variation in CH4 flux with land use change. Among the strongest predictors were the relative abundance and diversity of methanogens, which both increased in pasture relative to forests. We further identified individual taxa that were associated with CH4 fluxes and which collectively explained ~50% of flux variance. These taxa included methanogens and methanotrophs, as well as taxa that may indirectly influence CH4 flux through acetate production, iron reduction, and nitrogen transformations. Each land type had a unique subset of taxa associated with CH4 fluxes, suggesting that land use change alters CH4 cycling through shifts in microbial community composition. Taken together, our results suggest that changes in CH4 flux from agricultural conversion could be driven by microbial responses to land use change in the surface soil, with both direct and indirect effects on CH4 cycling. This demonstrates the central role of microorganisms in mediating ecosystem responses to land use change in the Amazon Basin.

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“…The function of Mn in AD has been described in the literature as a stabilizer for methyltransferase of methanogens [27] and as an electron donor for methane formation from CO 2 [28]. Wu et al (2015) reported that the addition of Mn improved the methanogenic production rate in de-oiled grease trap waste digestion.…”

Section: Metal Effect On Black Water Anaerobic Digestionmentioning

confidence: 99%

Screening of trace metal supplementation for black water anaerobic digestion

Braga

Pereira

Zaiat

et al. 2017

Environmental Technology

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Community on-site separation of wastewater is a treatment approach that leads to more efficient processes, with former pollutants considered resources to be recycled.Black water has high organic matter content and can be a suitable feedstock for anaerobic treatment systems. Biological methane production (BMP) tests were conducted using Plackett-Burman design to screen the effects of adding Fe, Ni, Cu, Co, Mn, Ba and Se, with simulated black water (SBW) as the substrate. In the inoculum, most metals were found mainly in the organic matter/sulfide and residual fractions except for Mn, which was present at 12.3% in the bioavailable fractions (exchangeable and carbonates), and Ba, which was evenly distributed among all the fractions. Under the studied ranges of added metals, Fe, Ni, and Co did not show a clear effect on the anaerobic digestion of the black water. Ba had a significant negative effect on methane production and Mn addition enhanced the toxic effect. A specific methanogenic activity (SMA) between 18 and 27% lower than the control, 11.17 mLCH4.gCOD-1.d , respectively.

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Methanogenesis from wastewater stimulated by addition of elemental manganese

Cited by 30 publications

References 33 publications

Sediment Properties Drive Spatial Variability of Potential Methane Production and Oxidation in Small Streams

Sediment Properties Drive Spatial Variability of Potential Methane Production and Oxidation in Small Streams

Belowground changes to community structure alter methane-cycling dynamics in Amazonia

Screening of trace metal supplementation for black water anaerobic digestion

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