ZHANGHua,CAOXue-feng,HUANGJian,et al.Effect of Calcium and Magnesium Ions on Microbial Electron Transport System in Landfill Leachate Treatment[J].China Water & Wastewater,2022,38(11):25-31.
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Effect of Calcium and Magnesium Ions on Microbial Electron Transport System in Landfill Leachate Treatment

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第38卷 Number: 第11期 Page: 25-31 Column: Date of publication: 2022-06-01
Author(s):
ZHANG　Hua1; 2;  CAO　Xue-feng1; 2;  HUANG　Jian1; 2;  TAO　Hai-tao1; 2;  JIA　Xuan1; 2;  WANG　Jin-hua1; 2;  XI　Shan-shan1; 2
（1. School of Environment and Energy Engineering， Anhui Jianzhu University， Hefei 230601， China； 2. Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse， Hefei 230601， China）
Keywords:
landfill leachate;  calcium ion;  magnesium ion;  anaerobic microorganism;  electron transport system
Abstract:
The high concentration of calcium and magnesium ions in landfill leachate can inhibit the growth and metabolism of microorganisms, and the electron transport system plays an important role in the metabolic process of microorganisms. Therefore, three different calcium and magnesium ion ratios (L1, L2 and L3) were designed by direct uniform beam method. Logistic and BiPhasic curves were employed to fit the concentration-effect data and draw the concentration-effect curve. The effect of calcium and magnesium ions on the electron transport system of anaerobic microorganisms in landfill leachate treatment was analyzed by isobologram method. The effects of calcium ion alone and calcium and magnesium ions together on the activity of anaerobic microbial electron transport system were characterized by low concentration promoting and high concentration inhibiting. The promoting effect decreased with the increase of calcium and magnesium ion concentration, while the inhibiting effect increased with the increase of calcium and magnesium ion concentration and action time. The isobologram model analysis showed that, when the ratios of calcium and magnesium ions were L1 and L2, the effect of calcium and magnesium ions on the anaerobic microbial electron transport system was transformed from antagonism to partial adding effect and eventually to synergy with the increase of action time. When the ratio of calcium and magnesium ions was L3, the effect of calcium and magnesium ions on the electron transport system was synergistic.
Last Update: 2022-06-01