SEA WATER INJECTION COUPLED WITH ELECTROKINETIC AS EFFICIENT APPROACH FOR ORGANIC ANOXIC MARINE SEDIMENT RECOVERY

This paper presents, the cumulative effect of in situ oxygen production through seawater electrolysis and seawater injection on the bioremediation of anoxic marine sediments contaminated with organic matter. Several parameters were evaluated: i) nutrient concentration; ii) extracellular enzymatic activities (β-d-glucosidase, MFU–β-glucopyranoside [Glu-MFU], and aminopeptidase, lleucine- 4-methylcoumarinyl-7-amide [Leu-MCA]); iii) total microbial biodiversity. These parameters were compared under different conditions, highlighting the positive effect of both electrokinetics coupled with seawater injection and seawater injection alone on the recovery of anoxic sediments.