Protein Polysaccharide Biopolymers (PPBs) are an innovative treatment technology that reverses beach erosion. Current hard methods to remedy beach erosion are focused on trying to modify the action of waves, creating structures that attempt to reverse the damage caused by them. The PPB technology can retain sand on beaches by enhancing sand cohesion and the biotic environment. The treatment technology can be used to enhance the efficiency of beach nourishment projects by optimizing sand retention.
PPBs are natural biodegradable proprietary biopolymers. the PPBs are designed through laboratory testing with sand and seawater from the site. When the PPB product is applied, the natural color and texture of the sand are not altered.
Various researchers have shown that the presence of the residual water that binds the sand together is the key ingredient for maintaining significant strength properties of sand materials (the sand castle effect). Water’s adhesion to sand on a beach is critical to maintaining cohesive strength, helping to sustain a balance between erosion and accretion cycles on natural beaches. Sand deposition processes also influence the stability of a beach. Loose dredged material placed on a beach does not have the necessary structure to resist erosion forces.
Studies have demonstrated that extracellular organic secretions from microorganisms and microphytobenthos can coat sediment clasts, act as a mucilage glue, and increase the cohesive nature of the sediment. The organic exudates (proteins and carbohydrates) form biofilms on the surface of the sand grains and enhance the cohesion of the sediment.
Samarcel‘s PPB formulations are composed of non-toxic biodegradable and natural ingredients (polysaccharides and proteins). When the products are applied, the natural color and the texture of the sand are not altered.
More information can be found in the following paper, to be published in the proceedings of the 2018 WEDA (Western Dredging Association) Summit and Expo.
Dahmani, A., Dahan, F., Qweider, F., Ligeikis, C., et al. “Sand Stabilization and Sediment Resuspension Mitigation Using Innovative Protein Polysaccharide Biopolymers (PPBs),” Proceedings of the Western Dredging Association Dredging Summit & Expo ‘18, Norfolk, VA, USA, June 25 – 28, 2018.
Contact Dr. Amine Dahmani (information below) for a free copy.
The PPB treatment is applied as a liquid solution in the intertidal zone of a beach in small trenches or applied as a dry powder on plowed sand. The treatment can also be sprayed on the dry beach to minimize windblown erosion and sprayed on sand dunes to stabilize the dunes and enhance dune vegetation by speeding vegetation growth and root density. The result is a healthy and sustainable beach environment. The process can be used to support beach nourishment projects.
Eco-friendliness // Rapid results // Cost effectiveness // Biotic enhancement //
A healthy and sustainable beach environment.