Effect of Fenton pretreatment and bacterial inoculation on cellulose-degrading genes and fungal communities during rice straw composting

Wu, Di; Qu, Fengting; Li, Dan; Zhao, Yue; Li, Xiang; Niu, Sijie; Zhao, Maoyuan; Qi, Haishi; Wei, Zimin; Song, Chen

doi:10.1016/j.scitotenv.2021.151376

Cited by 33 publications

(6 citation statements)

References 37 publications

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“…Cellulose, chitin, and lignin are typical agricultural wastes that are relatively stable in soil (Figure a) . Cellobiose phosphorylase, cellulase, exoglucanase, and endoglucanase are the main cellulose-degrading enzymes. , Moreover, deacetylase and polyphenol oxidase are the main chitin- and lignin-degrading enzymes, respectively (Figure a).…”

Section: Results and Discussionmentioning

confidence: 99%

Biochar and Hydrochar from Agricultural Residues for Soil Conditioning: Life Cycle Assessment and Microbially Mediated C and N Cycles

Wang

Shao

et al. 2022

ACS Sustainable Chem. Eng.

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Value-added biochar or hydrochar converted from agricultural waste has the potential to improve soil performance. However, how biochar and hydrochar addition affect ecological responses is not clear. Here, we examined the physicochemical property of biochar and hydrochar from straw (RS) and manure (SM), identified relevant eco-friendly pretreatment methods through life cycle assessment (LCA) methodology, and investigated their influences on soil properties and C and N cycles. The results showed that biochar prepared at 500 and 700 °C and hydrochar prepared at 250 °C for 4, 6, and 8 h had better physicochemical properties. The LCA results revealed that RBC500, RS250-4, and SM250-4 had lower environmental burdens in the preparation process. Moreover, biochar and hydrochar addition could promote the soil C and N cycles to varying degrees, especially in the case of SM250-4, which could simultaneously promote the degradation of cellulose, lignin, and chitin and reduce the emission of CO2 and N2O. Overall, SM250-4 application had a beneficial effect on carbon neutralization. These novel results compensate for the deficiency of research on the phaeozem improvement effects of biochar and hydrochar.

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Section: Results and Discussionmentioning

confidence: 99%

Biochar and Hydrochar from Agricultural Residues for Soil Conditioning: Life Cycle Assessment and Microbially Mediated C and N Cycles

Wang

Shao

et al. 2022

ACS Sustainable Chem. Eng.

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“…Differences among samples were analyzed using the LSD all-pairwise comparisons test. A structural equation model (SEM) was performed using the Amos 23 software (Wu et al, 2022 ).…”

Section: Methodsmentioning

confidence: 99%

Effect of forest planting patterns on the formation of soil organic carbon during litter lignocellulose degradation from a microbial perspective

Wu,

Yin,

Fan

et al. 2023

Front. Microbiol.

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Litter decomposition is an important source of soil organic carbon, and it plays a key role in maintaining the stability of forest ecosystems. The microbial mechanism of soil organic carbon (SOC) formation in different urban forest planting patterns during litter lignocellulose degradation is still unclear. The key genes, microbes, and metabolites in the process of lignocellulose degradation and SOC formation were determined by metagenomics and metabolomics in different litter decomposition layers and soil layers in different urban forest planting patterns, including three types of broadleaf forests (BP forests), three types of coniferous forests (CP forests), and two types of mixed coniferous and broadleaf forests (MCBP forests). The results indicated that the cellulose, hemicellulose, and lignin concentrations from the undecomposed layer to the totally decomposed layer decreased by 70.07, 86.83, and 73.04% for CP litter; 74.30, 93.80, and 77.55% for BP litter; and 62.51, 48.58, and 90.61% for MCBP litter, respectively. The soil organic carbon of the BP forests and MCBP forests was higher than that of the CP forests by 38.06 and 94.43% for the 0–10 cm soil layer and by 38.55 and 20.87% for the 10–20 cm soil layer, respectively. Additionally, the gene abundances of glycoside hydrolases (GHs) and polysaccharide lyases (PLs) in the BP forests were higher than those in the MCBP forests and CP forests. Amino acid metabolism, sugar metabolism, TCA metabolism, and cAMP signaling metabolism were mainly between the CP forests and BP forests, while the TCA cycle, pyruvate metabolism, phenylalanine metabolism, and tyrosine metabolism were mainly between the BP forests and MCBP forests during litter decomposition. Additionally, ammonia nitrogen and hemicellulose were key factors driving SOC formation in the CP forests, while ammonia nitrogen, hemicellulose, and lignocellulose-degrading genes were key factors driving SOC formation in the BP forests. For the MCBP forests, cellulose, pH, ammonia nitrogen, and lignin were key factors driving SOC formation. Our findings revealed that the BP forests and MCBP forests had stronger lignocellulose degradation performance in the formation of SOC. This study provided a theoretical basis for the flow and transformation of nutrients in different urban forest management patterns.

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“…Dairy manure [110] Poultry manure and horse bedding [111] Pig manure [112] Rice straw [113] Sewage sludge, swine manure, sawdust, mushroom residue [114] Sewage sludge, barley straw, wood chips [115] Sewage sludge, kitchen waste and corn stalks [116] Municipal solid waste [117] Vegetable and fruit waste [112] Pine bark [118] 4.3. Phytoremediation with Topsoil Amendment…”

Section: Compost Feedstock Referencesmentioning

confidence: 99%

A Review on Remediation of Iron Ore Mine Tailings via Organic Amendments Coupled with Phytoremediation

Sarathchandra

Rengel

Solaiman

2023

Plants

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Mining operations degrade natural ecosystems by generating a large quantity of mine tailings. Mine tailings remain in dams/open ponds without further treatment after valuable metals such as iron ore have been extracted. Therefore, rehabilitation of tailings to mitigate the negative environmental impacts is of the utmost necessity. This review compares existing physical, chemical and amendment-assisted phytoremediation methods in the rehabilitation of mine tailings from the perspective of cost, reliability and durability. After review and discussion, it is concluded that amendment-assisted phytoremediation has received comparatively great attention; however, the selection of an appropriate phytoremediator is the critical step in the process. Moreover, the efficiency of phytoremediation is solely dependent on the amendment type and rate. Further, the application of advanced plant improvement technologies, such as genetically engineered plants produced for this purpose, would be an alternative solution. Further research is needed to determine the suitability of this method for the particular environment.

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Effect of Fenton pretreatment and bacterial inoculation on cellulose-degrading genes and fungal communities during rice straw composting

Cited by 33 publications

References 37 publications

Biochar and Hydrochar from Agricultural Residues for Soil Conditioning: Life Cycle Assessment and Microbially Mediated C and N Cycles

Biochar and Hydrochar from Agricultural Residues for Soil Conditioning: Life Cycle Assessment and Microbially Mediated C and N Cycles

Effect of forest planting patterns on the formation of soil organic carbon during litter lignocellulose degradation from a microbial perspective

A Review on Remediation of Iron Ore Mine Tailings via Organic Amendments Coupled with Phytoremediation

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