Microbial fertilizer from co-composted sludge using mishimax-50 system

https://doi.org/10.31130/ud-jst.2025.23(9D).570E

Tóm tắt: 144 | PDF: 65

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Author

  • Tran Van Quang
    The University of Danang - University of Science and Technology, Vietnam
    Nguyen Dinh Bao
    The University of Danang - University of Science and Technology, Vietnam
    Nguyen Thi Minh Xuan
    The University of Danang - University of Science and Technology, Vietnam

Từ khóa:

Sludge
co-composting
microbial fertilizer
insoluble phosphate bacteria
cellulose decomposer

Tóm tắt

Sewage sludge from municipal and dairy wastewater treatment in Vietnam poses environmental challenges due to landfill overload and groundwater contamination. This study investigated co-composted sludge-derived microbial fertilizer (MK50) as a sustainable agricultural alternative. Sludge was co-composted with wood chips using mixing and thermal stabilization, producing MK50 with heavy metal levels below Vietnam’s safety thresholds. Microbial analysis revealed high densities of phosphate-solubilizing (1.45 × 10^6 CFU/g) and cellulose-degrading (2.16 × 10^6 CFU/g) bacteria, surpassing commercial biofertilizers. Field trials on water spinach and purple amaranth showed MK50 yields (3.33 kg/m² and 5.00 kg/m², respectively) comparable to or better than commercial fertilizers, with improved morphometric parameters (p < 0.05). However, MK50’s low nitrogen content (2.08%) led to less vibrant foliage. These results suggest MK50’s potential for sustainable agriculture by valorizing sludge through microbial activity, though further research is needed to optimize nutrient profiles and long-term efficacy.

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Sep 30, 2025
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Cách trích dẫn
Quang, T. V., N. D. Bao, và N. T. M. Xuan. “Microbial Fertilizer from Co-Composted Sludge Using Mishimax-50 System”. Tạp Chí Khoa học Và Công nghệ - Đại học Đà Nẵng, vol 23, số p.h 9D, Tháng Chín 2025, tr 86-91, doi:10.31130/ud-jst.2025.23(9D).570E.

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