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Biofilm Formed by Sulfur-Oxidizing Bacteria in Sewage and its Effect on Micro-Properties of Mortar
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Hui RONG1, 2, 3, Jiwei LIU1, Guowei MA3, Hailiang WANG4, Zhihua LIU1, Yong YANG1, Wei SHANG4
Journal of the Chinese Ceramic Society | 2021, 49(6) : 1230 - 1237
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Journal of the Chinese Ceramic Society | 2021, 49(6): 1230-1237
Biofilm Formed by Sulfur-Oxidizing Bacteria in Sewage and its Effect on Micro-Properties of Mortar
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Hui RONG1, 2, 3, Jiwei LIU1, Guowei MA3, Hailiang WANG4, Zhihua LIU1, Yong YANG1, Wei SHANG4
Affiliations
  • 1.School of Materials Science and Engineering, Tianjin Chengjian University, Tianjin 300384, China
  • 2.Tianjin Key Laboratory of Building Green Functional Materials, Tianjin Chengjian University, Tianjin 300384, China
  • 3.School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China
  • 4.School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China

    • RONG Hui(1983-), male, Ph. D., Associate Professor. E-mail:

About Author:

RONG Hui(1983-), male, Ph. D., Associate Professor. E-mail:

Published: 2021-06-20 doi: 10.14062/j.issn.0454-5648.20200553
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Biofilm and the microscopic properties of mortar were investigated by electrochemical impedance spectroscopy, scanning electron microscopy, thermal analysis and X-ray diffraction. The results show that a mature biofilm can be formed on the surface of mortar at 30 d. In a macroscopic study, the biofilm is a transparent and viscous substance containing white matter. In a microscopic study, the biofilm is a film structure formed by rod-shaped sulfur-oxidizing bacteria wrapped with extracellular polymeric substances (EPS). The biofilm on the surface of 90 d mortar is in the disintegration stage. The thickness, protein optical density (OD) value and microorganism number OD value of the 30 d biofilm are 1.59 mm, 0.086, and 1.614, respectively, which are higher than those of the 90 d biofilm. Based on the results of a microscopic study, the plate-like mineralized gypsum gradually occurs in mortar, the semicircular diameter of the first half of the electrochemical impedance spectrum gradually becomes larger and the inclination angle of the second half of the straight line becomes larger, and some pores in mortar fill with gypsum when the test age increases. Compared to the 30 d test age, the 90 d gypsum content is relatively larger, and the 90 d adhered biofilm dehydrated content of gypsum is 0.248% greater than the 90 d unattached biofilm dehydrated content of gypsum. This indicates that the biofilm formed by sulfur-oxidizing bacteria could have a corrosive deepening effect on mortar.

mortar  /  biofilm  /  performance  /  electrochemical impedance spectroscopy  /  microbiological corrosion  /  durability
荣辉, 刘骥伟, 马国伟, 王海良, 刘志华, 杨永, 尚伟. 污水环境下硫氧化细菌形成的生物被膜及其对砂浆微观性能的影响. 硅酸盐学报, 2021 , 49 (6) : 1230 -1237 . DOI: 10.14062/j.issn.0454-5648.20200553
Hui RONG, Jiwei LIU, Guowei MA, Hailiang WANG, Zhihua LIU, Yong YANG, Wei SHANG. Biofilm Formed by Sulfur-Oxidizing Bacteria in Sewage and its Effect on Micro-Properties of Mortar[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (6) : 1230 -1237 . DOI: 10.14062/j.issn.0454-5648.20200553
Appendix
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Year 2021 volume 49 Issue 6
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Article Info
doi: 10.14062/j.issn.0454-5648.20200553
  • Receive Date：2020-07-30
  • Online Date：2026-10-30
  • Published：2021-06-20
Article Data
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History
  • Received：2020-07-30
  • Revised：2020-08-25
Funding
Affiliations
    1.School of Materials Science and Engineering, Tianjin Chengjian University, Tianjin 300384, China
    2.Tianjin Key Laboratory of Building Green Functional Materials, Tianjin Chengjian University, Tianjin 300384, China
    3.School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China
    4.School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China

Corresponding:

YANG Yong(1975-), male, Master, Lecturer. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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