ZHENG An-dong,QIAN Cheng-long,HUANGJin-jie,et al.Growth and Degradation Kinetics of Strains during Algae Lysis Process[J].China Water & Wastewater,2023,39(23):83-90.
Growth and Degradation Kinetics of Strains during Algae Lysis Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第23期
Page:
83-90
Column:
Date of publication:
2023-12-01
- Keywords:
- algae lysis; growth kinetics; degradation kinetics
- Abstract:
- The microbial treatment of cyanobacteria is a hot research issue in recent years. This paper explored the algae lysis characteristics of Microcystis aeruginosa by the strain XXG (Paenibacillus sp.) selected from rice root soil irrigated with cyanobacteria bloom water, investigated the growth and degradation kinetics of the strain during the algae lysis process and established corresponding models. The algae lysis rate of strain XXG was 60.60% within 6 days under the conditions of bacteria-algae volume ratio of 5.6%, temperature of 30 ℃ and logarithmic growth of Microcystis aeruginosa. The growth curve of strain XXG in the algae lysis system was in accordance with the Polynomial model, in which the cell density (OD600) of the strain reached the maximum 0.799 on the 3.5th day, and the specific growth rate kinetics of the strain was in line with the one-dimensional linear model. In the symbiotic state of bacteria and algae, both of the exponential decay kinetic model and primary reaction kinetic model could effectively predict and simulate the change of chlorophyll-a concentration in the algae lysis system. The changes of total nitrogen and total phosphorus in algal cells and the algae lysis time were in accordance with the one-dimensional kinetic models.
Last Update:
2023-12-01