PhosKraft Multinutrient Fertilizer Based on Sewage Sludge Ash

As part of RNA and DNA structures it saves genetic information and is essential for the energy transport to the cells and the photosynthesis. Static phosphate rock reserves, referring to identified resources (12 bill. t) that can be extracted profitably (at $ 30/t) with existing technology and under present economic conditions are estimated to be depleted within as little as 95 years (Source: U.S. Bureau of Mines). Sedimentary phosphate rock deposits (87 % of global reserves) contain high levels of Cadmium (> 20 mg/kg) and Uranium (> 100 mg/kg) that usually are transferred to P-fertilizers and consequently enriched in soils. Sewage sludge is with 66 % the single largest drain of P in modern society’s nutrient cycle, but is equally the immediate drain of all organic and inorganic substances that are eliminated from the wastewater at the sewage plant. Municipal sewage sludge and other organic residues contain primary, secondary and trace nutrients together with microorganisms like bacteria, viruses and parasites, various chemicals and heavy metals.