@article{fdi:010077339, title = {{B}iodegradation of diclofenac by two green microalgae : {P}icocystis sp. and {G}raesiella sp.}, author = {{B}en {O}uada, {S}. and {B}en {A}li, {R}. and {C}imetiere, {N}. and {L}eboulanger, {C}hristophe and {B}en {O}uada, {H}. and {S}ayadi, {S}.}, editor = {}, language = {{ENG}}, abstract = {{T}he aim of the present study was to provide an integrated view of algal removal of diclofenac ({DCF}). {T}wo isolated microalgal strains {P}icocystis sp. and {G}raesiella sp. were cultivated under different {DCF} concentrations and their growth, photosynthetic activity and diclofenac removal efficiency were monitored. {R}esults showed that {DCF} had slight inhibitory effects on the microalgal growth which did not exceed 21% for {P}icocystis and 36% for {G}raesiella after 5 days. {B}oth species showed different patterns in terms of removal efficiency. {I}n presence of {P}icocystis sp., the amounts of removed {DCF} were up to 73%, 43% and 25% of 25, 50 and 100 mg {L}-1 respectively; whereas only 52%, 28% and 24% were removed in the presence of {G}raesiella at same {DCF} tested concentrations. {DCF} removal was insured mainly by biodegradation. {T}o better reveal the mechanism involved, metabolites analyses were performed. {T}wo {DCF} biodegradation/biotransformation products were detected in presence of {P}icocystis. {T}his study indicated that {P}icocystis performed a satisfactory growth capacity and {DCF} removal efficiency and thus could be used for treatment of {DCF} contaminated aqueous systems.}, keywords = {{M}icroalgae ; {E}xtremophiles ; {D}iclofenac ; {R}emoval ; {B}iodegradation ; {B}iotransformation}, booktitle = {}, journal = {{E}cotoxicology and {E}nvironmental {S}afety}, volume = {186}, numero = {}, pages = {art. 109769 [9 p.]}, ISSN = {0147-6513}, year = {2019}, DOI = {10.1016/j.ecoenv.2019.109769}, URL = {https://www.documentation.ird.fr/hor/fdi:010077339}, }