AI Article Synopsis
- Landfill stabilization takes a long time, which is a challenge for cities, but combining micro-aeration and leachate recirculation can speed up organic matter breakdown.
- The study revealed significant increases in volatile fatty acids (VFAs) and high removal rates of pollutants, with reductions of 80.17% in chemical oxygen demand (COD), 48.30% in total phosphorus (TP), and 48.56% in ammonia nitrogen (NH-N) by the end of the landfill period.
- This method also boosted populations of helpful bacteria and improved the overall efficiency of waste degradation by enhancing functional microorganisms.
Article Abstract
The long duration of landfill stabilization is one of the challenges faced by municipalities. In this paper, a combination of micro-aeration and leachate recirculation is used to achieve rapid degradation of organic matter in landfill waste. The results showed that the content of volatile fatty acids (VFAs) in the hydrolysis phase increased significantly and could enter the methanogenic phase quickly. Until the end of the landfill, the removal rates of chemical oxygen demand (COD), total phosphorus (TP) and ammonia nitrogen (NH-N) by micro-aeration and leachate recirculation reached 80.17 %, 48.30 % and 48.56 %, respectively, and the organic matter degradation rate reached 50 %. Micro-aeration and leachate recirculation enhanced the abundance of facultative hydrolytic bacteria such as Rummeliibacillus and Bacillus and the oxygen tolerance of Methanobrevibacter and Methanoculleus. Micro-aeration and leachate recirculation improved the organic matter degradation efficiency of landfill waste by promoting the growth of functional microorganisms.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biortech.2023.129615 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Positive effects of appropriate micro-aeration on landfill stabilization: Mitigating ammonia and VFAs accumulation.
Bioresour Technol
December 2024
Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, PR China. Electronic address:
Article Synopsis
- * A specific micro-aeration rate of 0.05 L/(h·kg) significantly boosted the production of volatile fatty acids and reduced nitrogen levels by 22.1%, improving organic matter breakdown efficiency by 55.5%.
- * The research also found that this micro-aeration method enhanced the diversity and presence of beneficial bacteria and archaea, leading to a faster and more effective landfill stabilization process with positive environmental and economic implications.
Micro-aeration and leachate recirculation for the acceleration of landfill stabilization: Enhanced hydrolytic acidification by facultative bacteria.
Bioresour Technol
November 2023
Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, PR China. Electronic address:
Article Synopsis
- Landfill stabilization takes a long time, which is a challenge for cities, but combining micro-aeration and leachate recirculation can speed up organic matter breakdown.
- The study revealed significant increases in volatile fatty acids (VFAs) and high removal rates of pollutants, with reductions of 80.17% in chemical oxygen demand (COD), 48.30% in total phosphorus (TP), and 48.56% in ammonia nitrogen (NH-N) by the end of the landfill period.
- This method also boosted populations of helpful bacteria and improved the overall efficiency of waste degradation by enhancing functional microorganisms.
Enhanced landfill process based on leachate recirculation and micro-aeration: A comprehensive technical, environmental, and economic assessment.
Sci Total Environ
January 2023
Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, PR China.
The landfill is still the primary waste treatment method in developing countries. Due to the long stability time and long-term occupation of a large amount of land, the landfill poses a significant threat to the ecological environment and affects the process of urbanization. This study conducted a landfill simulation reactor (LSR) experiment to achieve rapid landfill stabilization through micro-aeration and leachate recirculation.
View Article and Find Full Text PDFImproving leachate quality and optimizing CH and NO emissions from a pre-aerated semi-aerobic bioreactor landfill using different pre-aeration strategies.
Chemosphere
October 2018
School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, China.
Landfill aeration efficiently accelerates municipal solid waste (MSW) stabilization. This method also impacts methane (CH) and nitrous oxide (NO) emissions during aeration. In this study, the effects of three pre-aeration strategies on leachate quality variations and CH and NO emissions from three lab-scale pre-aerated semi-aerobic bioreactor landfills, which were filled with MSW, were investigated: low frequency and high frequency intermittent aeration (LIA and HIA) and continuous micro-aeration (CMA).
View Article and Find Full Text PDFEffect of micro-aeration and leachate replacement on COD solubilization and VFA production during mono-digestion of grass-silage in one-stage leach-bed reactors.
Bioresour Technol
April 2010
University of Jyväskylä, Department of Biological and Environmental Science, P.O. Box 35, FI-40014 Jyväskylä, Finland.
The effect of micro-aeration and leachate replacement with fresh water on chemical oxygen demand (COD) solubilization and volatile fatty acid (VFA) production during the mono-digestion of grass-silage in one-stage leach-bed reactors (LBRs) was investigated in four LBRs, L0 (control), L1, L2 and L3 in batch mode at 35 + or - 1 degrees Celsius for 57 days. Results showed that leachate replacement without pH adjustment (L3) resulted in 2.7 and 1.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!