Laboratory evaluation of electrokinetic dewatering of dredged marine sediment as an option for climate change adaption

The climate change affects the coastal infrastructure including ports. This effect is through changes in tides, waves, wind and erosion. As a result, sedimentation harbours area increases therefore there need for more regular dredging as well adaption to reduce vulnerability. More frequent means higher amount of sediments be disposed or treated. One methods proposed impact high reducing environmental wastes by-product reuse reproduce dredged sediments. Electrokinetic stabilization one environmentally friendly dewater strengthen engineering properties soils study investigates electrokinetic improve mud an alternative option use sustainable method adaption. Two laboratory designs are tested determine most efficient dewatering configuration examine potential this improving mud. promising expedite settlement marine However, placement electrodes can affect power consumption efficiency technique resistivity soil. Some studies literature best electrode optimize stabilization. few examined sedimentation. based on depending versus dewatering, soil electrical resistivity, sediments, treatment time. To energy expenditure first constant voltage 20 V applied variation electric current during monitored. Once approached zero, increased 30 V. Using both cases (anode top, cathode at bottom; anode bottom, top), it was observed that obtained when placed top.