Economic models for the use of electrokinetic geosynthetics

Electrically conductive geosynthetics (EKG) combine electrokinetic phenomena with conventional geosynthetic functions. This produces a range of geosynthetic materials which are able to effect physical and chemical changes to the proper-ties of the soil, sludges, slurries and other materials in which they are placed, These 'active" geosynthetics can be used in a range of applications including the civil and environmental industries; agriculture; mining and waste reduction; and the handling and the reduction of wastes and sludges. Different forms and specifications of electrokinetic materials are required for the different applications The paper addresses detailed economic models for the potential benefits of the use of EKG materials and electrokinetic techniques as an alternative to conventional wick drains; to enhance the process dewatering of sewage sludge or mine tailings; and to permit in-situ treatment and dewatering of sludge lagoons.