Metagenomic and q-PCR analysis reveals the effect of powder bamboo biochar on nitrous oxide and ammonia emissions during aerobic composting

He, Xueqin; Yin, Hongjie; Chen, Fang; Xiong, Jinpeng; Han, Lujia; Yang, Zengling; Huang, Guangqun

doi:10.1016/j.biortech.2020.124567

Cited by 41 publications

(12 citation statements)

References 50 publications

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“…However, too low TF (i.e.,CMS7 treatment) resulted in lots of anaerobic zone present in the compost system and therefore caused problems of long fermentation time [48]. An increase in temperature was observed for all treatment after each compost turning as also reported by previous study [49], thereby indicating that proper TF may increase the oxygen content in the compost, which may result in promoting the activities of microbial organism that can degrade the materials in the compost pile and generating heat [17]. Moisture content can greatly impact the microbial activity and physicochemical parameters of the compost.…”

Section: Effect Of Tf On Composting Process Ph and Gi Values Of The C...supporting

confidence: 80%

Effects of Turning Frequency on Ammonia Emission during the Composting of Chicken Manure and Soybean Straw

Xue

et al. 2022

Molecules

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Here, we investigated the impact of different turning frequency (TF) on dynamic changes of N fractions, NH3 emission and bacterial/archaeal community during chicken manure composting. Compared to higher TF (i.e., turning every 1 or 3 days in CMS1 or CMS3 treatments, respectively), lower TF (i.e., turning every 5 or 7 days in CMS5 or CMS7 treatments, respectively) decreased NH3 emission by 11.42–18.95%. Compared with CMS1, CMS3 and CMS7 treatments, the total nitrogen loss of CMS5 decreased by 38.03%, 17.06% and 24.76%, respectively. Ammonia oxidizing bacterial/archaeal (AOB/AOA) communities analysis revealed that the relative abundance of Nitrosospira and Nitrososphaera was higher in lower TF treatment during the thermophilic and cooling stages, which could contribute to the reduction of NH3 emission. Thus, different TF had a great influence on NH3 emission and microbial community during composting. It is practically feasible to increase the abundance of AOB/AOA through adjusting TF and reduce NH3 emission the loss of nitrogen during chicken manure composting.

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Section: Effect Of Tf On Composting Process Ph and Gi Values Of The C...supporting

confidence: 80%

Effects of Turning Frequency on Ammonia Emission during the Composting of Chicken Manure and Soybean Straw

Xue

et al. 2022

Molecules

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“…In Figure 5 c, the N 2 O emission rate in the covered group was lower compared with the non-covered group. N 2 O was also mainly generated in anaerobic conditions by the denitrification process [ 44 ]. However, as a macromolecular gas, N 2 O was obviously blocked by functional membranes.…”

Section: Resultsmentioning

confidence: 99%

Large Semi-Membrane Covered Composting System Improves the Spatial Homogeneity and Efficiency of Fermentation

Sun

Huang

et al. 2022

IJERPH

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Homogenous spatial distribution of fermentation characteristics, local anaerobic conditions, and large amounts of greenhouse gas (GHGs) emissions are common problems in large-scale aerobic composting systems. The aim of this study was to examine the effects of a semi-membrane covering on the spatial homogeneity and efficiency of fermentation in aerobic composting systems. In the covered group, the pile was covered with a semi-membrane, while in the non-covered group (control group), the pile was uncovered. The covered group entered the high-temperature period earlier and the spatial gradient difference in the group was smaller compared with the non-covered group. The moisture content loss ratio (5.91%) in the covered group was slower than that in the non-covered group (10.78%), and the covered group had a more homogeneous spatial distribution of water. The degradation rate of organic matter in the non-covered group (11.39%) was faster than that in the covered group (10.21%). The final germination index in the covered group (85.82%) was higher than that of the non-covered group (82.79%) and the spatial gradient difference in the covered group was smaller. Compared with the non-covered group, the oxygen consumption rate in the covered group was higher. The GHG emissions (by 30.36%) and power consumption in the covered group were reduced more significantly. The spatial microbial diversity of the non-covered group was greater compared with the covered group. This work shows that aerobic compost covered with a semi-membrane can improve the space homogeneity and efficiency of fermentation.

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“…First, under ammonification driven by ammonia-oxidizing bacteria, hydroxylamine is generated from NH 4 + by ammonia monooxygenase as an intermediate product. After that, hydroxylamine is transformed into NO 2 − by hydroxylamine oxidoreductase [ 28 , 29 ]. The remaining NH 4 + directly generates N 2 O by incomplete nitrification (pathway ②) [ 30 ].…”

Section: The Theory Of Gaseous Emission In Compostingmentioning

confidence: 99%

“…Due to its large specific surface area and low cost, biochar has been widely studied as a physical additive in composting [ 29 , 62 ]. As shown in Table 2 , biochar can be produced from bamboo, corn stalk, wheat straw, willow chips, and even poultry manure [ 19 , 20 , 63 ].…”

Section: Control Strategy For Gaseous Emissionsmentioning

confidence: 99%

Measures for Controlling Gaseous Emissions during Composting: A Review

Chen

et al. 2023

IJERPH

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Composting is a promising technology for treating organic solid waste. However, greenhouse gases (methane and nitrous oxide) and odor emissions (ammonia, hydrogen sulfide, etc.) during composting are practically unavoidable, leading to severe environmental problems and poor final compost products. The optimization of composting conditions and the application of additives have been considered to mitigate these problems, but a comprehensive analysis of the influence of these methods on gaseous emissions during composting is lacking. Thus, this review summarizes the influence of composting conditions and different additives on gaseous emissions, and the cost of each measure is approximately evaluated. Aerobic conditions can be achieved by appropriate process conditions, so the contents of CH4 and N2O can subsequently be effectively reduced. Physical additives are effective regulators to control anaerobic gaseous emissions, having a large specific surface area and great adsorption performance. Chemical additives significantly reduce gaseous emissions, but their side effects on compost application must be eliminated. The auxiliary effect of microbial agents is not absolute, but is closely related to the dosage and environmental conditions of compost. Compound additives can reduce gaseous emissions more efficiently than single additives. However, further study is required to assess the economic viability of additives to promote their large-scale utilization during composting.

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Metagenomic and q-PCR analysis reveals the effect of powder bamboo biochar on nitrous oxide and ammonia emissions during aerobic composting

Cited by 41 publications

References 50 publications

Effects of Turning Frequency on Ammonia Emission during the Composting of Chicken Manure and Soybean Straw

Effects of Turning Frequency on Ammonia Emission during the Composting of Chicken Manure and Soybean Straw

Large Semi-Membrane Covered Composting System Improves the Spatial Homogeneity and Efficiency of Fermentation

Measures for Controlling Gaseous Emissions during Composting: A Review

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