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Increasing the organic loading rate of household food waste anaerobic digestion by landfill leachate addition: Performance and mechanism by Lianpei Zou; Yi Wang; Ruixin Wu; Shenghao Ji; Yulan Wan; Hui Cheng; Yu-You Li; Jianyong Liu is a Environmental Science article available to read on EtoBox.
What is Increasing the organic loading rate of household food waste anaerobic digestion by landfill leachate addition: Performance and mechanism about?
A high amount of easily degradable organics and the absence of trace metals (TMs) in household food waste (HFW) lowered the stability and efficiency of anaerobic digestion (AD) of HFW. Leachate addition to the AD of HFW can provide ammonia nitrogen and TMs to address the accumulation of volatile fatty acids and the lack of TMs. To study the effect of leachate addition on increasing organic loading rate (OLR), both mono-digestion of HFW and AD of HFW with leachate addition were evaluated using two continuously stirred tank reactors. The OLR of the mono-digestion reactor only reached 2.5 g COD/L/d. However, with the addition of ammonia nitrogen and TMs, the OLR of the failed mono-digestion reactor increased by 2 and 3.5 g COD/L/d, respectively. The specific methanogenic activity increased by 94.4% and the hydrolysis efficiency increased by 135%. Finally, the OLR of mono-digestion of HFW reached 8 g COD/L/d, with a hydraulic retention time (HRT) of 8 days and methane production rate of 2.4 L/L/d. In the leachate addition reactor, the OLR reached 15 g COD/L/d, while the HRT and methane production were 7 days and 3.4 L/L/d, respectively. This study demonstrates that leachate addition su
Who reads Increasing the organic loading rate of household food waste anaerobic digestion by landfill leachate addition: Performance and mechanism?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Lianpei Zou; Yi Wang; Ruixin Wu; Shenghao Ji; Yulan Wan; Hui Cheng; Yu-You Li; Jianyong Liu
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Environmental Science (Physical Sciences)