Insights into the effect of iron-carbon particle amendment on food waste composting: Physicochemical properties and the microbial community

Article Agricultural Engineering

Combined addition of biochar and garbage enzyme improving the humification and succession of fungal community during sewage sludge composting

Jishao Jiang et al.

Summary: The combination of garbage enzyme and biochar has positive effects on TOC degradation, humification, and fungal succession during sewage sludge composting.

BIORESOURCE TECHNOLOGY (2022)

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Article Agricultural Engineering

Fungal pretreatment facilitates the rapid and valuable composting of waste cardboard

Surindra Suthar et al.

Summary: The study found that waste cardboard could be a valuable substrate for compost preparation with significantly increased nutritional elements after being pretreated with a consortium of white-rot fungi.

BIORESOURCE TECHNOLOGY (2022)

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Article Engineering, Environmental

Fungal-Mineral Interactions Modulating Intrinsic Peroxidase-like Activity of Iron Nanoparticles: Implications for the Biogeochemical Cycles of Nutrient Elements and Attenuation of Contaminants

Zhi-Lai Chi et al.

Summary: Our study reveals that fungi have a robust defect engineering strategy to modulate the POD-like activity of iron minerals, decreasing the activity of poorly ordered ferrihydrite but enhancing that of well-crystallized hematite. The dynamics of POD-like activity involve trade-offs between lattice oxygen and oxygen vacancies in the iron nanoparticles, which may be located in a cytoprotective fungal exoskeleton.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

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Article Environmental Sciences

Bacterial and fungal community dynamics during different stages of agro-industrial waste composting and its relationship with compost suppressiveness

Alicia Hernandez-Lara et al.

Summary: This study evaluated the impact of three composting piles on the bacterial and fungal communities of baby-leaf lettuce crops, finding that fungal communities were more influenced by composting phases while bacterial communities were more sensitive to chemical changes. All composts were considered stable and mature, with compost C_C showing higher maturity. Bacterial phyla related to soil-borne pathogen suppression were more abundant in all three composts, but C_A and C_B showed higher suppressiveness against P. irregulare than C_C, likely due to higher abundance of potential suppressive genera such as Aspergillus and Penicillium.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

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Article Engineering, Environmental

Electroactive Fe-biochar for redox-related remediation of arsenic and chromium: Distinct redox nature with varying iron/carbon speciation

Zibo Xu et al.

Summary: In this study, a series of Fe-biochar with distinct Fe/C speciation were produced and their redox reactivity for Cr(VI) and As(III) oxidation/reduction was evaluated. The results showed that the redox performance of Fe-biochar was influenced by the transition of Fe/C speciation, and different Fe-biochar exhibited different oxidation/reduction behaviors under oxic and anoxic conditions. The electron-donating capacity and electron-accepting capacity of Fe-biochar played important roles in its redox reactivity.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Agricultural Engineering

Biodegradation kinetics of ammonium enriched food waste digestate compost with biochar amendment

M. K. Manu et al.

Summary: The study found that adding 10% biochar during food waste digestate composting process could enhance degradation rate, reduce nitrogen losses, and significantly lower NH4+-N content.

BIORESOURCE TECHNOLOGY (2021)

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Article Agricultural Engineering

Effects of FeSO4 dosage on nitrogen loss and humification during the composting of cow dung and corn straw

Juan Mei et al.

Summary: The addition of FeSO4 in the composting process of cow dung and corn straw was found to reduce nitrogen loss and increase the content of humus substances, leading to a higher maturity degree of the compost product. This study demonstrated that FeSO4 can inhibit organic matter mineralization and accelerate the formation of humus substances during composting.

BIORESOURCE TECHNOLOGY (2021)

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Article Agricultural Engineering

Effect of bioaugmentation on lignocellulose degradation and antibiotic resistance genes removal during biogas residues composting

Bin Zhong et al.

Summary: This study employed specific bacterial strains for bioaugmentation in composting process, which effectively degraded lignocellulose, increased seed germination index of compost, and optimized the abundance of microbial composition and functional genes. Additionally, nursery experiments verified the potential of bioaugmented compost in resource utilization of agricultural wastes.

BIORESOURCE TECHNOLOGY (2021)

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Article Agricultural Engineering

Effects of two-stage microbial inoculation on organic carbon turnover and fungal community succession during co-composting of cattle manure and rice straw

Ning Zhu et al.

Summary: The study compared the effects of single-stage inoculation (SSI) and two-stage inoculation (TSI) on co-composting of cattle manure and rice straw. TSI was found to be more effective in accelerating temperature increase, improving product quality, and influencing fungal community succession. Redundancy analysis revealed that temperature was the major environmental factor affecting fungal community in TSI.

BIORESOURCE TECHNOLOGY (2021)

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Article Agricultural Engineering

Insight into the influence of biochar on nitrification based on multi-level and multi-aspect analyses of ammonia-oxidizing microorganisms during cattle manure composting

Liting Deng et al.

Summary: In this study, the influence of biochar on nitrification of cattle manure composting was explored by analyzing the ammonia-oxidizing microorganisms (AOMs) at multiple levels and aspects. The addition of biochar increased the diversity and copy numbers of AOMs, altered the transcription of amoA genes, and reduced ammonooxygenase (AMO) activity. Different microbial taxa, such as Crenarchaeota and Nitrosomonas, played crucial roles in mediating nitrogen transformation processes influenced by biochar.

BIORESOURCE TECHNOLOGY (2021)

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Article Agricultural Engineering

Insight into the synergistic effects of conductive biochar for accelerating maturation during electric field-assisted aerobic composting

Tao Fu et al.

Summary: This study demonstrates that the addition of conductive biochar in biochar-added electric field-assisted aerobic composting significantly shortens compost maturation time by 25%, increases oxygen utilization rate and relative abundance of electroactive bacteria. The synergistic effect of conductive biochar facilitates oxygen utilization by reducing resistance and accelerating electron transfer, proving to be an effective strategy for optimizing the efficiency of EAC.

BIORESOURCE TECHNOLOGY (2021)

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Review Engineering, Environmental

Roles of biochar-derived dissolved organic matter in soil amendment and environmental remediation: A critical review

Yuqing Sun et al.

Summary: Biochar is a promising carbonaceous material with abundant functional groups and mesoporous structure, showing potential in improving soil fertility, retaining nutrients, enhancing microbial activity, and immobilizing contaminants. The dissolved organic matter (DOM) from biochar plays a key role in soil matrix, microbial community, and fate of contaminants, with both positive and negative effects that are influenced by various factors such as the nature of biochar-derived DOM and environmental conditions. Understanding the long-term stability and interactions of biochar-derived DOM is critical for minimizing the ecological and environmental risks of biochar application.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Engineering, Environmental

Patterns of fungal community succession triggered by C/N ratios during composting

Cece Qiao et al.

Summary: It has been found that the functional composition of microbial communities is closely linked to local environmental factors, rather than taxonomic composition. The initial C/N ratio of composting material was analyzed to reveal the succession of fungal community diversity, showing a high occurrence of wood saprotrophs with a gradual decline of plant and animal pathogens during composting. Specific OTUs exhibited competitive and facilitative interactions with each other, impacting the overall pattern variations of fungal community in high-efficiency composting.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Engineering, Environmental

Role of lignin and thermophilic lignocellulolytic bacteria in the evolution of humification indices and enzymatic activities during compost production

Arash Hemati et al.

Summary: The study found that treatments with high lignin content had higher enzymatic activities, while treatments with low lignin content showed better humification indices and some enzymatic activities. Specific strains can accelerate the composting process and enhance enzymatic activities.

WASTE MANAGEMENT (2021)

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Article Engineering, Environmental

Maturity indices as an index to evaluate the quality of sulphur enriched municipal solid waste compost using variable byproduct of sulphur

M. D. Meena et al.

Summary: The study evaluated the maturity indicators of municipal solid waste compost enrichment with different sulfur byproducts, showing that sulfur enriched compost had higher quality indices and plant nutrients, making it a potential substitute for expensive fertilizers.

WASTE MANAGEMENT (2021)

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Article Agricultural Engineering

Pathways and mechanisms of nitrogen transformation during co-composting of pig manure and diatomite

Xiuna Ren et al.

Summary: Diatomite facilitates nitrogen transformation, reduces nitrogen emission, and enhances composting score; the optimal dosage is 10%, while the carbon to nitrogen ratio is crucial for reducing nitrogen loss.

BIORESOURCE TECHNOLOGY (2021)

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Article Agricultural Engineering

Two types nitrogen source supply adjusted interaction patterns of bacterial community to affect humifaction process of rice straw composting

Zhechao Zhang et al.

Summary: This study explored the effects of chicken manure and urea as nitrogen sources on the humification process during lignocellulose biomass composting. The results showed that chicken manure supply can select specific functional bacterial taxa and stimulate the collaborative division of bacterial community, benefiting the effective transformation of organic components.

BIORESOURCE TECHNOLOGY (2021)

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Article Green & Sustainable Science & Technology