Cattle manure compost humification process by inoculation ammonia-oxidizing bacteria

Xu, Zhiming; Li, Ronghua; Wu, Shenghui; He, Qifu; Ling, Zimeng; Liu, Tao; Wang, Quan; Zhang, Zengqiang; Quan, Fusheng

doi:10.1016/j.biortech.2021.126314

Cited by 43 publications

(21 citation statements)

References 45 publications

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“…Result had reported that carbon-based catalyst exhibited an excellent performance on persulfate activation, primarily relay on OH and SO 4 • - (Luo et al, 2020;Li et al, 2022). This might be attributed to the rich porous structure, huge surface area and abundant functional groups of HA, which could benefit the formation of countless bonding sites (Hung et al, 2022;Xu et al, 2022;Yao et al, 2022). The existence of functional groups in HA, especially quinones, was considered to be an important factor in PS activation (Fang et al, 2013;Zhang et al, 2021).…”

Section: Resultsmentioning

confidence: 99%

“…Humic acid (HA) is a kind of complex polymer containing carboxyl, alcohol hydroxyl, phenolic hydroxyl, carbonyl, quinone and other functional groups, as well as many aromatic ring conjugated structures and unstable free radicals (Duesteberg and Waite, 2007;Kang and Choi, 2009;Sun et al, 2016). Recently, HA has been demonstrated as a potential activator for PS, with the advantages of biocompatibility, sustainability, and environmental friendliness, but the limited catalytic performance hindered its further applications (Xu et al, 2022;Yao et al, 2022). UV-visible analysis showed that the π electron in HA strongly affected DNT degradation, and the complexation between HA and Fe(II) could promote the degradation process (Li et al, 2019).…”

Section: Open Access Edited Bymentioning

confidence: 99%

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Insight into the degradation mechanism of fluorene by ferrous/humic acid activated persulfate: Free radical reactions, functional group verification and degradation pathway

Liao

et al. 2022

Front. Environ. Sci.

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This study evaluated the performance of humic acid (HA)/ferrous ion (Fe (II)) activating persulfate (PS) for fluorene (FLU) degradation. Results showed that HA/Fe(II)/PS system exhibited the best performance for PS activation to eliminate FLU. Compared to the non-activated case, the degradation efficiency of FLU had increased by 37%–43% in HA activated PS system. HA had significant synergistic effects on Fe (II) activated PS process, but ferric ion (Fe(III)) inhibited the degradation. We confirmed that semiquinone radical (SQ·-) acted as the dominant activating group by quenching and electron spin resonance (ESR) experiments, which promoted more radicals generated. The proportion of benzoquinone (BQ) and Fe(II) wielded a considerable influence on FLU degradation, and the optimal concentration ratio was 1:1. Four possible degradation pathways of FLU were deduced, involving ring-opening of the aromatic ring, decarboxylation, oxidative dehydrogenation and hydroxylation.

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Section: Resultsmentioning

confidence: 99%

Section: Open Access Edited Bymentioning

confidence: 99%

Insight into the degradation mechanism of fluorene by ferrous/humic acid activated persulfate: Free radical reactions, functional group verification and degradation pathway

Liao

et al. 2022

Front. Environ. Sci.

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“…Similar to the study by Chen et al [ 109 ], the same theory can explain the reduction in CH 4 and N 2 O emissions. Mixing highly humified mature compost is conducive to enhancing the adsorption of ammonium nitrogen in a composting pile, which can significantly reduce ammonia volatilization [ 131 , 132 ]. Luo et al [ 133 ] observed almost the same trend of mature composting reducing GHG emissions, but the NH 3 emission reduction performance was not sufficiently explained.…”

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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“…As we know, composting is a series of complex biological, physical and chemical processes (Guo et al 2020), and microorganisms play a crucial role in composting systems. Many researchers have pointed out that the inoculation of native or exogenous microorganisms improves the composting process, especially the introduction of exogenous compound microbial agents (Wang et al 2022;Xu et al 2022aXu et al , 2022bZhao et al 2022). In addition, biochar is a biocompatible material, which is conducive to the reproduction and habitat of microorganisms, and can increase the number and activity of microorganisms (Wang et al 2022).…”

Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

Effects of biochar carried microbial agent on compost quality, greenhouse gas emission and bacterial community during sheep manure composting

Wang

Yang

et al. 2023

Biochar

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Although composting is a very effective way to dispose agricultural wastes, its development is greatly limited by the low compost quality and greenhouse gas emissions. At present, there is a lack of effective means to solve these two problems simultaneously. Here, the effects of three additives of compound microbial agent, biochar and biochar carried microbial agent on the composting performance, nitrogen transformation, greenhouse gas and ammonia emissions, and bacterial communities were investigated in sheep manure composting during 28 days. Results showed that biochar carried microbial agent prolonged the thermophilic stage and promoted compost maturity. At the same time, it was confirmed by the increase of the decomposition of organic nitrogen and the transformation of NH4+-N to NO3−-N. Besides, adding biochar carried microbial agent decreased CH4, NH3 and N2O emissions by 65.23%, 42.05% and 68.64%, respectively. The gas emissions were mainly correlated to Chloroflexi, Myxococcota, Acidobacteriota, Firmicutes, and Gemmatimonadota. Redundancy analysis showed that EC and TKN were closely related to bacterial community. Therefore, biochar carried microbial agent is recommended as an effective additive to enhance compost quality and reduce gas emissions during sheep manure composting. Graphical Abstract

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Cattle manure compost humification process by inoculation ammonia-oxidizing bacteria

Cited by 43 publications

References 45 publications

Insight into the degradation mechanism of fluorene by ferrous/humic acid activated persulfate: Free radical reactions, functional group verification and degradation pathway

Insight into the degradation mechanism of fluorene by ferrous/humic acid activated persulfate: Free radical reactions, functional group verification and degradation pathway

Measures for Controlling Gaseous Emissions during Composting: A Review

Effects of biochar carried microbial agent on compost quality, greenhouse gas emission and bacterial community during sheep manure composting

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