Effect of Fenton pretreatment combined with bacteria inoculation on humic substances formation during lignocellulosic biomass composting derived from rice straw

Wu, Di; Wei, Zimin; Qu, Fengting; Mohamed, Taha Ahmed; Zhu, Longji; Zhao, Yue; Jia, Limin; Zhao, Ran; Liu, Lijuan; Li, Ping

doi:10.1016/j.biortech.2020.122849

Cited by 86 publications

(26 citation statements)

References 40 publications

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“…2 e). On the other hand, WSS content increased from 48 to 72 h in Compost M. This phenomenon may be due to the fast hydrolyzation of carbohydrates such as cellulose and hemicellulose [ 33 ]. In the end, WSS content in Compost M was higher than that in Compost C at 168 h ( p < 0.05, Fig.…”

Section: Resultsmentioning

confidence: 99%

Development of a consortium-based microbial agent beneficial to composting of distilled grain waste for Pleurotus ostreatus cultivation

Zhou

et al. 2021

Biotechnol Biofuels

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Background Pleurotus ostreatus is an edible mushroom popularly cultivated worldwide. Distilled grain waste (DGW) is a potential substrate for P. ostreatus cultivation. However, components in DGW restrict P. ostreatus mycelial growth. Therefore, a cost-effective approach to facilitate rapid P. ostreatus colonization on DGW substrate will benefit P. ostreatus cultivation and DGW recycling. Results Five dominant indigenous bacteria, Sphingobacterium sp. X1, Ureibacillus sp. X2, Pseudoxanthomonas sp. X3, Geobacillus sp. X4, and Aeribacillus sp. X5, were isolated from DGW and selected to develop a consortium-based microbial agent to compost DGW for P. ostreatus cultivation. Microbial agent inoculation led to faster carbohydrate metabolism, a higher temperature (73.2 vs. 71.2 °C), a longer thermophilic phase (5 vs. 3 days), and significant dynamic changes in microbial community composition and diversity in composts than those of the controls. Metagenomic analysis showed the enhanced microbial metabolisms, such as xenobiotic biodegradation and metabolism and terpenoid and polyketide metabolism, during the mesophilic phase after microbial agent inoculation, which may facilitate the fungal colonization on the substrate. In accordance with the bioinformatic analysis, a faster colonization of P. ostreatus was observed in the composts with microbial inoculation than in control after composting for 48 h, as indicated from substantially higher fungal ergosterol content, faster lignocellulose degradation, and higher lignocellulase activities in the former than in the latter. The final mushroom yield shared no significant difference between composts with microbial inoculation and control, with 0.67 ± 0.05 and 0.60 ± 0.04 kg fresh mushroom/kg DGW, respectively (p > 0.05). Conclusion The consortium-based microbial agent comprised indigenous microorganisms showing application potential in composting DGW for providing substrate for P. ostreatus cultivation and will provide an alternative to facilitate DGW recycling.

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Section: Resultsmentioning

confidence: 99%

Development of a consortium-based microbial agent beneficial to composting of distilled grain waste for Pleurotus ostreatus cultivation

Zhou

et al. 2021

Biotechnol Biofuels

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“…SD1 and Streptomyces clavuligerus sp. XM which were screened from rice straw compost into the composting pile accelerated the degradation of organic matter and coarse fiber content by 7.58% and 8.82%, respectively due to the enhancement of key enzymes (CMCase, xylanase) and core microbial metabolisms [64]. Moreover, inoculation of a microbial inoculum consisting of Ralstonia sp.…”

Section: Microbial Inoculation With Additional Functions As a Means To Enhance The Composting Processmentioning

confidence: 99%

Enhancement of Agro-Industrial Waste Composting Process via the Microbial Inoculation: A Brief Review

et al. 2022

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Composting is an important technology used to treat and convert organic waste into value-added products. Recently, several studies have been done to investigate the effects of microbial supplementation on the composting of agro-industrial waste. According to these studies, microbial inoculation is considered to be one of the suitable methods for enhancing the biotransformation of organic materials during the composting process. This review provides up-to-date research findings on microbial inoculation strategies and their role and functions in enhancing the composting process and the improvement of compost quality. Based on this review, the addition of microorganisms could enhance the composting process such as accelerating the organic matter degradation, mineralization and microbial enzymes activities, and the quality of the end-products such as high germination index. It is important to notice in this strategy that sludge’s microbial consortium is feasible to enhance the composting process in pilot-scale and industrial-scale productions. Besides, it also reduces the cost of compost production. The findings of this review show the various positive impact of microbial inoculation on agro-industrial waste composting which in turn might be useful as a reference for selecting a suitable inoculum based on the type of waste materials.

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“…Soil microbial metabolism not only affects the material circulation and ecological balance but also promotes soil fertility and nutrient transformation in plants [7,28]. The changes in soil microbial metabolism are influenced by carbon fixation [39], nutrient acquisition [40], decomposition, soil enzyme activity [41], soil formation [42], and carbon and nitrogen cycling [39,43].…”

Section: Plos Onementioning

confidence: 99%

“…The recovery rate of fertilizer is not high, and many studies have focused on its application [38,42]. A large amount of wastewater is produced in farm cleaning and culturing [57,58].…”

Section: Bottlenecks and Other Issues For Future Investigationsmentioning

confidence: 99%

A global meta-analysis of animal manure application and soil microbial ecology based on random control treatments

Guo

Liu

et al. 2022

PLoS ONE

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The processes involved in soil domestication have altered the soil microbial ecology. We examined the question of whether animal manure application affects the soil microbial ecology of farmlands. The effects of global animal manure application on soil microorganisms were subjected to a meta-analysis based on randomized controlled treatments. A total of 2303 studies conducted in the last 30 years were incorporated into the analysis, and an additional 45 soil samples were collected and sequenced to obtain 16S rRNA and 18S rRNA data. The results revealed that manure application increased soil microbial biomass. Manure application alone increased bacterial diversity (M-Z: 7.546 and M-I: 8.68) and inhibited and reduced fungal diversity (M-Z: −1.15 and M-I: −1.03). Inorganic fertilizer replaced cattle and swine manure and provided nutrients to soil microorganisms. The soil samples of the experimental base were analyzed, and the relative abundances of bacteria and fungi were altered compared with no manure application. Manure increased bacterial diversity and reduced fungal diversity. Mrakia frigida and Betaproteobacteriales, which inhibit other microorganisms, increased significantly in the domesticated soil. Moreover, farm sewage treatments resulted in a bottleneck in the manure recovery rate that should be the focus of future research. Our results suggest that the potential risks of restructuring the microbial ecology of cultivated land must be considered.

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Effect of Fenton pretreatment combined with bacteria inoculation on humic substances formation during lignocellulosic biomass composting derived from rice straw

Cited by 86 publications

References 40 publications

Development of a consortium-based microbial agent beneficial to composting of distilled grain waste for Pleurotus ostreatus cultivation

Development of a consortium-based microbial agent beneficial to composting of distilled grain waste for Pleurotus ostreatus cultivation

Enhancement of Agro-Industrial Waste Composting Process via the Microbial Inoculation: A Brief Review

A global meta-analysis of animal manure application and soil microbial ecology based on random control treatments

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