Un fertilizante util para mejorar suelos degradados compuesto de cenizas volantes de combustion de biomasa , lodos secundarios de industria del papel y yeso, donde el lodo secundario aporta lignina, la cual actua como agente quelante; y proceso de elaboracion.

摘要

The invention relates to a fertiliser for improving degraded soils, especially in terms of sulfur and calcium content, consisting of: (a) between 40 and 60 wt. % of fly ash from biomass combustion, (b) between 10 and 30 wt. % of secondary sludge from the paper industry; and (c) between 10 and 50 wt. % of gypsum; where the secondary sludge provides lignin which acts as a chelating agent.