A method of processing a powder, comprising (a) contacting the powder with (i) a 2-40% by weight solution of a sulphur- or phosphorous-containing mineral acid or a mixture thereof, or (ii) one or more alkaline earth metal oxides, carbonates or hydroxides, or a mixture thereof; (b) combining the product of (a)(i) with one or more alkaline earth metal oxides, carbonates or hydroxides, or a mixture thereof; or combining the product of (a)(ii) with a 2-40% by weight solution of a sulphur- or phosphorous-containing mineral acid or a mixture thereof and optionally with further of the alkaline earth metal oxides, carbonates or hydroxides, or a mixture thereof; and (c) granulating the combination of (b) to form granules.

Phosphate- and potassium-containing fertilisers are made using the granules.

The present invention provides a new fertilizer comprising water and an organic potassium source wherein the fertilizer composition has a pH range of from 5.5 to 10.0 and a salt index no greater than about 40 as measured by electrical conductivity methods. The organic potassium source is selected from the group consisting of potassium acetate, potassium formate, potassium citrate, potassium succinate, potassium propionate, and combinations thereof. The fertilizer demonstrates lower phytotoxicity damage compared to other sources of potassium for fertilizer products. The fertilizer composition may further comprise nitrogen, phosphorus, sulfur, zinc, boron, calcium, manganese, iron, copper, cobalt, magnesium, molybdenum, inoculants, or a combination thereof.

The present invention provides a new fertilizer comprising water and an organic potassium source wherein the fertilizer composition has a pH range of from 5.5 to 10.0 and a salt index no greater than about 40 as measured by electrical conductivity methods. The organic potassium source is selected from the group consisting of potassium acetate, potassium formate, potassium citrate, potassium succinate, potassium propionate, and combinations thereof. The fertilizer demonstrates lower phytotoxicity damage compared to other sources of potassium for fertilizer products. The fertilizer composition may further comprise nitrogen, phosphorus, sulfur, zinc, boron, calcium, manganese, iron, copper, cobalt, magnesium, molybdenum, inoculants, or a combination thereof.

The invention concerns a method of treating phosphate-containing waste, in particular phosphate-containing ash from waste-incineration plants, by wet-chemical digestion in order to obtain compounds of aluminum, calcium, phosphorus and nitrogen.

The invention concerns a method of treating phosphate-containing waste, in particular phosphate-containing ash from waste-incineration plants, by wet-chemical digestion in order to obtain compounds of aluminum, calcium, phosphorus and nitrogen.

The present invention concerns a method for recovering phosphorus by thermochemical reaction of a phosphorus-containing material such as an alternative fuel, for example, in the presence of calcium-containing particles in a moving bed reactor and subsequent separation of fines enriched with phosphorus from the moving bed reactor. Furthermore, the present invention concerns the use of a recyclable material obtained by the method as a fertilizer or fertilizer additive.

The present invention concerns a method for recovering phosphorus by thermochemical reaction of a phosphorus-containing material such as an alternative fuel, for example, in the presence of calcium-containing particles in a moving bed reactor and subsequent separation of fines enriched with phosphorus from the moving bed reactor. Furthermore, the present invention concerns the use of a recyclable material obtained by the method as a fertilizer or fertilizer additive.

Methods treat ash from waste incineration, wherein the methods at least comprise: a) the digestion of the ash by a leaching liquor containing phosphate ions in solution such as to form a first solid phase comprising impurities and a first liquid phase comprising phosphate ions; and b) the separation of said first liquid phase comprising phosphate ions from said first solid phase. Step a) is carried out for a duration of less than one hour or at a temperature of more than 40 C.

Methods treat ash from waste incineration, wherein the methods at least comprise: a) the digestion of the ash by a leaching liquor containing phosphate ions in solution such as to form a first solid phase comprising impurities and a first liquid phase comprising phosphate ions; and b) the separation of said first liquid phase comprising phosphate ions from said first solid phase. Step a) is carried out for a duration of less than one hour or at a temperature of more than 40 C.

It is an object of the present invention to provide a method for water clarification and greening that can simply and efficiently adsorb and remove nitrogen and/or phosphorus in a smaller horizontal area than in conventional methods, and that exhibits improved water clarification performance per unit area. It is also an object of the present invention to provide a method for water clarification and greening that can stably adsorb and remove nitrogen and/or phosphorus not only in summer but also in winter.

The present invention relates to a method for water clarification and greening, which simultaneously achieves water clarification and greening by planting a plant in a channel; wherein water flowing into the channel contains ammonia nitrogen and/or phosphorus; the channel comprises a planting portion where the plant is planted in a filtration bed filled with a granular material containing incineration ash; and the granular material containing incineration ash adsorbs the ammonia nitrogen and/or phosphorus in the water flowing into the channel, and the plant grows by absorbing the ammonia nitrogen and/or phosphorus adsorbed onto the granular material containing incineration ash, so as to achieve water clarification and greening.