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[Inoculating microbes on municipal solid wastes composting affects organic acids and maturity]

Zi-min Wei1, Bei-dou Xi, Yue Zhao

  • 1Chinese Research Academy of Environmental Science, Beijing 100012, China.

Huan Jing Ke Xue= Huanjing Kexue
|May 12, 2006
PubMed

Insights

Adding Meishang compound microbes (MS) and Zhongjia fermentation microbes (ZJ) to municipal solid waste composting accelerates maturity. The combined MS + ZJ microbial inoculation showed the most significant improvements in compost quality.

Area of Science:

  • Environmental Science
  • Microbiology
  • Waste Management

Background:

  • Municipal solid waste (MSW) composting is a crucial process for waste treatment.
  • Industrialized composting technologies are widely adopted for MSW management.
  • Understanding microbial dynamics is key to optimizing composting efficiency.

Purpose of the Study:

  • To investigate the effects of microbial inoculation on MSW composting.
  • To analyze the dynamic changes in organic acids and humic substances during composting.
  • To evaluate the impact of different microbial inoculants on compost maturity.

Main Methods:

  • Industrialized composting of MSW with different microbial inoculants: Meishang compound microbes (MS) and Zhongjia fermentation microbes (ZJ).
  • Monitoring of low molecular weight organic acids and high molecular weight humic substances.
  • Assessment of compost maturity using the humification index.

Main Results:

  • Microbial inoculation increased organic acid content initially, then decreased it by the final stage.
  • Humic substance and humic acid levels declined initially but increased by the end of composting.
  • The combined MS + ZJ inoculation resulted in the highest compost maturity, followed by ZJ, MS, and the control (CK).

Conclusions:

  • Microbial inoculation significantly enhances the maturity of MSW compost.
  • The combination of MS and ZJ microbes is most effective in improving compost quality.
  • Optimizing microbial communities can lead to more efficient and effective composting processes.

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