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Coupled aerobic and anoxic biodegradation for quinoline and nitrogen removals

Ning YAN,Lu WANG,Ling CHANG,Cuiyi ZHANG,Yang ZHOU,Yongming ZHANG,Bruce E. RITTMANN

《环境科学与工程前沿（英文）》 2015年第9卷第4期页码 738-744 doi: 10.1007/s11783-014-0666-9

摘要： Quinoline (C H N) commonly occurs in wastewaters from the chemical, pharmaceutical, and dyeing industries. As quinoline is biodegraded, nitrogen is released as ammonium. Total-N removal requires that the ammonium-N be nitrified and then denitrified. The objective of this study was to couple quinoline biodegradation with total-N removal. In a proof-of-concept step, activated sludge was sequenced from aerobic to anoxic stages. The ammonium nitrogen released from quinoline biodegradation in the aerobic stage was nitrified to nitrate in parallel. Anoxic biodegradation of the aerobic effluent then brought about nitrogen and COD removals through denitrification. Then, simultaneous quinoline biodegradation and total-N removal were demonstrated in a novel airlift internal loop biofilm reactor (AILBR) having aerobic and anoxic zones. Experimental results showed that the AILBR could achieve complete removal of quinoline, 91% COD removal, and 85% total-N removal when glucose added as a supplemental electron donor once nitrate was formed.

关键词： Quinoline biofilm reactor biodegradation denitrification

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The synthesis of 6-(tert-butyl)-8-fluoro-2,3-dimethylquinoline carbonate derivatives and their antifungal activity against Pyricularia oryzae

Long Cheng, Ruirui Zhang, Hongke Wu, Xinghai Liu, Tianming Xu

《化学科学与工程前沿（英文）》 2019年第13卷第2期页码 369-376 doi: 10.1007/s11705-018-1734-7

摘要： A series of novel 6-( -butyl)-8-fluoro-2,3-dimethylquinoline carbonate derivatives were designed and synthesized. Bioassay results showed that some of them exhibited good activity against ( ). It was found that the compound (benzyl (6-( -butyl)-8-fluoro-2,3- dimethylquinolin-4-yl) carbonate) possessed good activity against whatever protective activity (10 mg·L ) or curative activity (25 mg·L ), which was better than that of control tebufloquin. In addition, the frontier molecular orbit results revealed that the compound held higher activity against when the total energy was low and the ClogP was high, which may provide useful information for further design novel fungicides.

关键词： quinoline synthesis antifungal activity rice blast SAR