%0 Journal Article %T Combined process for removal of tetracycline antibiotic - Coupling pre-treatment with a nickel-modified graphite felt electrode and a biological treatment. %+ Institut des Sciences Chimiques de Rennes (ISCR) %+ Université des Sciences et de la Technologie Houari Boumediene = University of Sciences and Technology Houari Boumediene [Alger] (USTHB) %+ Université européenne de Bretagne - European University of Brittany (UEB) %A Belkheiri, Daouia %A Fourcade, Florence %A Geneste, Florence %A Floner, Didier %A Aït-Amar, Hamid %A Amrane, Abdeltif %< avec comité de lecture %@ 0964-8305 %J International Biodeterioration and Biodegradation %I Elsevier %S 103 %V 103 %P 147-153 %8 2015-09 %D 2015 %R 10.1016/j.ibiod.2015.02.032 %K Tetracycline %K Carbon felt anode %K Combined processes %K Biodegradability %Z Chemical SciencesJournal articles %X Biodegradability improvement of tetracycline-contg. solns. after an electrochem. pre-treatment was examd. Cyclic voltammetry with a nickel electrode revealed a significant electrochem. activity of tetracycline, in both oxidn. and redn. Electrochem. treatment was therefore performed in a home-made flow cell using a nickel-modified graphite felt electrode as the working electrode. Optimal conditions, namely 100 mg l-1 initial tetracycline, above 0.45 V potential, and between 1 and 6 mL min-1 flow rate, led to a more than 99% conversion yield of tetracycline in oxidn. in alk. conditions, after only a single pass through the percolation cell. However, total org. carbon (TOC) analyses revealed a low mineralization level, i.e., always below 31%, underscoring the importance of a combined electrochem. and biol. treatment. This was confirmed by the favorable trends of the COD/TOC ratio, decreasing from 2.7 to 1.9, and the av. oxidn. state, increasing from 0.044 to 1.15, before and after oxidn. pretreatment at 0.7 V and 3 mL min-1 flow rate. Electrolyzed solns. appeared biodegradable, since BOD5/COD increased from 0 to 0.46 for untreated and pretreated TC at 0.7 V/SCE. Biol. treatment showed only biosorption for non-pretreated tetracycline, while after 11.5 days of culture, the mineralization of solns. electrolyzed in oxidn. was 54%, leading to a 69% overall TOC decrease during the combined process. %G English %2 https://univ-rennes.hal.science/hal-01153056/document %2 https://univ-rennes.hal.science/hal-01153056/file/Combined%20process%20for%20removal_accepted.pdf %L hal-01153056 %U https://univ-rennes.hal.science/hal-01153056 %~ UNIV-RENNES1 %~ CNRS %~ INSA-RENNES %~ ENSC-RENNES %~ ISCR %~ SCR_MACSE %~ SCR-CIP %~ STATS-UR1 %~ UR1-SPM %~ INC-CNRS %~ UR1-UFR-SPM %~ UR1-HAL %~ UR1-SDLM %~ TEST-UNIV-RENNES %~ TEST-UR-CSS %~ UNIV-RENNES %~ INSA-GROUPE %~ UR1-MMS %~ TEST2-HALCNRS %~ TEST3-HALCNRS