This study was conducted by a third party, Marcost de Mexico SA de CV. A paper was presented at the 2018 WEDA Summit and Expo and will be published in the proceedings of the Summit. Contact Dr. Amine Dahmani (see contact info) for a free copy.
Ocaña, F., Dahmani, A., Pinzón R., Ceballos, D., et al. “Protein Polysaccharide Biopolymers (PPBs) Technology Evaluation for Renourished Beach Erosion Control,” Proceedings of the Western Dredging Association Dredging Summit & Expo ‘18, Norfolk, VA, USA, June 25 – 28, 2018.
A summary of the case study results are presented below. An 85-m long beach in Progreso, Yucatan, was treated with a PPB formulation (SandFirst). Changes were evaluated in the Treatment zone and two Control zones over a 1-year period (evolution of the coastline and sediment volumes) using 136 profiles and a linear regression analysis of the data. Changes in sediment volumes were evaluated for a section of the profile corresponding to 30 meters (approximately 10 m of dry beach and 20 m of submerged beach) bounded between the levels +1.0m to -1.5m. The study assessed differences in sediment balance between Treatment and Controls and how the coastline evolved over a one year period. An analysis of variance was also performed.
In the Treatment zone, the sediment balance (erosion/accretion rate) was stable between the supralittoral and sublittoral areas (0.06 m3/m), while in the Control zones it had an average negative balance of -4.04 m3/m. The coastline in the Treatment zone shows a tendency to expand seaward. The Controls regressed. Our findings suggests that the treatment is a suitable method for increasing beach resilience and may be used to complement beach renourishment projects. The PPB treatment did not impede the nesting of sea turtles as three successful nestings and hatchings were observed on the beach during the project.
Evolution of the coastline
Sand Volume Variations