Oxytetracycline removal from water by novel microbial embedding gel beads

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Wu, Nan^1 ; Pan, Peng^2 ; Zeng, Ming^2 ; Wang, Wei^3 ; Xu, Chenshan^1 ; Zhang, Zongpeng^4 ; Liu, Xinyuan^1 ; Wang, Yichao^1

College of Engineering and Technology, Tianjin Agricultural University, Tianjin

300384, China^1

College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin

300457, China^2

College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin

300384, China^3

Fukai Diwo (Tianjin) Environmental Protection Technology Co., Ltd, Tianjin

300457, China^4

关键词: Activated sludge;    Aquatic environments;    Biological toxicity;    Gel beads;    Oxytetracyclines (OTC);    Removal efficiencies;    Removal performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/4/042004/pdf
DOI  :  10.1088/1755-1315/108/4/042004

来源: IOP

【 摘 要 】

As a common antibiotic in aquatic environment, excessive oxytetracycline (OTC) is urgent to be removed due to its great biological toxicity. Compared with the traditional activated sludge, microbial embedding can enhance the treating efficiency. In this study, novel microbial embedding gel beads were produced with the additional agent of cyclodextrin (CD). Results show that CD could increase the mass transfer of OTC into gel beads, possibly because of its strong affinity for organic matters. In terms of OTC biodegradation, gel beads with CD were comparable to gel beads without CD, while the former's sucrose removal efficiency was higher than the latter. The biodegradation of OTC only occurred in the presence of sucrose. The respiration test also confirmed these findings. Overall, the produced novel gel beads modified with CD could improve the removal performance of OTC.