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Kinetics simulation of Cu and Cd removal and the microbial community adaptation in a periphytic biofilm reactor
- Tang, Cilai, Sun, Pengfei, Yang, Jiali, Huang, Yingping, Wu, Yonghong
- Bioresource technology 2019 v.276 pp. 199-203
- biofilm, bioreactors, cadmium, copper, decontamination, eukaryotic cells, liquids, mathematical models, microbial communities, prokaryotic cells, wastewater
- Periphytic biofilm reactor (PBfR) shows great potential in pollutants removal. However, few studies were focused on mathematical model of pollutants removal in PBfR. A three-step PBfR was designed and a new model was developed to simulate the kinetics of Cu and Cd removal from simulated wastewater. The results show that the PBfR could remove 99.0% Cu and 99.7% Cd from liquid wastewater. The experiment data could be well fitted with a high correlation coefficients both for Cu and Cd. The microbial community in the PBfR could be self-adjusted to tolerate the toxicities of Cu and Cd, resulting in sustainable and high decontamination efficiencies. The eukaryote in the PBfR played a vital role in Cu and Cd removal. The prokaryote showed negative effect on Cu and Cd removal, though it had more diversity than eukaryote. This study provides a new approach for Cu and Cd removal and their kinetics simulation in photoautotrophic bioreactor.