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Internal loop photo-biodegradation reactor used for accelerated quinoline degradation and mineralization. | LitMetric

Internal loop photo-biodegradation reactor used for accelerated quinoline degradation and mineralization.

Biodegradation

Department of Environmental Engineering, College of Life and Environmental Science, Shanghai Normal University, Shanghai, 200234, People's Republic of China.

Published: July 2014

AI Article Synopsis

Article Abstract

Biofilm biodegradation was coupled with ultra-violet photolysis using the internal loop photobiodegradation reactor for degradation of quinoline. Three protocols-photolysis alone (P), biodegradation alone (B), and intimately coupled photolysis and biodegradation (P&B)-were used for degradation of quinoline in batch and continuous-flow experiments. For a 1,000 mg/L initial quinoline concentration, the volumetric removal rate for quinoline was 38 % higher with P&B than with B in batch experiments, and the P&B kinetics were the sum of kinetics from the P and B experiments. Continuous-flow experiments with an influent quinoline concentration of 1,000 mg/L also gave significantly greater quinoline removal in P&B, and the quinoline-removal kinetics for P&B were approximately equal to the sum of the removal kinetics for P and B. P&B similarly increased the rate and extent of quinoline mineralization, for which the kinetics for P&B were nearly equal to the sum of kinetics for P and B. These findings support that the rate-limiting step for mineralization was transformation of quinoline, which was accelerated by the simultaneous action of photolysis and biodegradation.

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Source
http://dx.doi.org/10.1007/s10532-014-9683-4DOI Listing

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