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The resource utilization of surplus sludge can effectively alleviate the current global energy crisis. In order to improve the efficiency of hydrogen productionHydrogen production, the effects of Fe-WHC in different concentrations on the final fermentation product and cumulative hydrogen productionHydrogen production were investigated by using iron-modified wheat flour hydrothermal carbon Fe-WHC as an exogenous additive. The mechanism of hydrogen productionHydrogen production in sludge fermentation was explored through kinetic analysis of the cumulative hydrogen productionHydrogen production and microbial community analysis. The results showed that the optimal hydrogen productionHydrogen production of 0.3 mg/g-VSS-Fe-WHC was 1.813 mL/g-VSS, which was 34.08% higher than that of the blank control group. The output value of energy is 1.78 kJ/g-VSS. The maximum hydrogen productionHydrogen production was 1.88 mL/g-VSS in the experimental group, and the maximum hydrogen productionHydrogen production rate was 0.38 mL/h. After fermentation, the maximum accumulation of short-chain fatty acids in the experimental group was 1093.134 mg/L, which was increased by 51.10% compared with the blank control group. Bacillota was the most dominant strain in this study. Compared with the blank control group, Bacillota increased from 61.32% to 78.06%, an increase of 16.74%, with a growth rate of 27.30%. The results of this study can provide an important reference for further promoting sludge recycling.

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Study on Hydrogen Production Performance of Iron-Modified Hydrothermal Carbon Enhanced Sludge Anaerobic Fermentation

  • 会议论文

  • 发表日期：

    2026年

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  • Ting He,
  • Tian Chai,
  • Jing Zhang,
  • Zuocheng Yin,
  • Longjun Hua

摘要

The resource utilization of surplus sludge can effectively alleviate the current global energy crisis. In order to improve the efficiency of hydrogen productionHydrogen production, the effects of Fe-WHC in different concentrations on the final fermentation product and cumulative hydrogen productionHydrogen production were investigated by using iron-modified wheat flour hydrothermal carbon Fe-WHC as an exogenous additive. The mechanism of hydrogen productionHydrogen production in sludge fermentation was explored through kinetic analysis of the cumulative hydrogen productionHydrogen production and microbial community analysis. The results showed that the optimal hydrogen productionHydrogen production of 0.3 mg/g-VSS-Fe-WHC was 1.813 mL/g-VSS, which was 34.08% higher than that of the blank control group. The output value of energy is 1.78 kJ/g-VSS. The maximum hydrogen productionHydrogen production was 1.88 mL/g-VSS in the experimental group, and the maximum hydrogen productionHydrogen production rate was 0.38 mL/h. After fermentation, the maximum accumulation of short-chain fatty acids in the experimental group was 1093.134 mg/L, which was increased by 51.10% compared with the blank control group. Bacillota was the most dominant strain in this study. Compared with the blank control group, Bacillota increased from 61.32% to 78.06%, an increase of 16.74%, with a growth rate of 27.30%. The results of this study can provide an important reference for further promoting sludge recycling.