Solid waste based manufactured soil - Stabilization of "organics-microorganisms-inorganic skeleton" and performance evaluation
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View abstract on PubMed
Summary
This summary is machine-generated.Manufactured soil from solid waste (SW) boosts fertility and plant growth. Aerobic compost sludge (ACS-soil) showed superior performance over anaerobic digestion sludge (ADS-soil) due to stable microbial communities and higher humification.
Area Of Science
- Environmental Science
- Soil Science
- Microbiology
Background
- Safe disposal of bulk solid waste (SW) is a global challenge.
- Manufactured soil from SW offers a resource recycling solution.
- Mechanisms of SW-based manufactured soil fertility are not well understood.
Purpose Of The Study
- Investigate the performance of SW-based manufactured soil.
- Focus on microbial mechanisms driving fertility development.
- Compare aerobic compost sludge (ACS-soil) and anaerobic digestion sludge (ADS-soil) derived soils.
Main Methods
- Systematic performance investigation of ACS-soil and ADS-soil.
- Analysis of soil nutrient index (SNI) and pH.
- Microbial community analysis.
- Life cycle assessment (LCA) for carbon emissions.
Main Results
- SW-based manufactured soils had 5-8 times higher SNI than natural topsoil and promoted wheatgrass growth.
- ACS-soil demonstrated superior fertility, stable nutrients, and increased humification.
- ADS-soil showed decreased SNI and pH, with stochastic bacterial succession impacting fertility.
- SW-based manufactured soil preparation resulted in lower carbon emissions than conventional disposal methods.
Conclusions
- SW-based manufactured soil is a promising method for SW disposal and resource recycling.
- ACS-soil enhances soil fertility and plant growth more effectively than ADS-soil.
- Microbial community dynamics are crucial for manufactured soil fertility development.
- Selecting appropriate organic components is key to optimizing SW-based manufactured soil performance.
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