A New Biofertilizer Formulation with Enriched Nutrients Content from Wasted Algal Biomass Extracts Incorporated in Biogenic Powders

Raw algae waste naturally thrown on shores could pose serious threats for landfilling and its reuse composting or further processing as added-value by-products require knowledge-based decisions management the sustainable development of local ecosystems. marine containing salt (halite) heavy metals that eventually accumulate in hamper their safe applicability soil fertilization other exploitations. Here, suitability algal biomass use an environmentally fertilizer was investigated, thereby supporting coastal management. The simple extraction dry three abundant Mediterranean species, Enteromorpha intestinalis, Corallina elongata, Gelidium pulchellum, water sodium carbonate resulted a greenish extract reduced content, nutrients such K+, PO43−, SO42−, NO3−, Ca2+, Mg2+. UV-Vis Raman techniques, including surface-enhanced scattering (SERS), were employed fast evidencing polyphenols, carotenoids, chlorophylls extracts while E. intestinalis additionally exhibited polysaccharide signals. Heavy analysis showed major Fe, Ni, Zn, Cu; however, levels order magnitude lower than biomass. also mild antibacterial effect. combination option aqueous with powdered crustacean shells to obtain novel, eco-friendly, solid biofertilizer complex shown, which be pelleted convenient use. immersion pellets is accompanied by re-solubilization compounds originating from extracts, presenting opportunity storage easier handling land applicability. In summary, present attractive way recycle excessive formulate new, eco-friendly complex.