Microbial method for construction of an aquaculture pond in sand

A method to construct an aquaculture pond in sand using microbial biocementation is presented in this paper. The microbially induced calcium carbonate precipitation process was used to form a lowpermeability layer in sand for the construction of a water pond model in the laboratory. The test results indicated that the permeability of sand was reduced from the order of 10^-4 m/s to 10^-7 m/s when an average 2.1 kg of calcium (Ca) per m² of sand surface was precipitated. The bending strengths of the walls and the base of the model pond were in the range of 90-256 kPa. The unconfined compressive strengths for the samples taken from the walls and the base of the pond were in the range of 215-932 kPa.