The present invention relates to a process for the production of a phosphate containing fertilizer product, comprising the steps of providing a phosphate containing precipitate from a wastewater treatment process; separating water from the precipitate to provide a dewatered slurry cake; and optionally admixing a compound selected from nitrogen, potassium and additional phosphorous containing compounds. The present invention further relates to a fertilizer and uses.

The present disclosure provides robust fertilizer particles suitable for fertigation. A composition comprising mineral oil, primary alkylamines and water-insoluble particles may coat fertilizer particles and make them suitable for fertigation. Furthermore, the coated particles display reduced dusting tendency. The coating composition may be applied as a thin, single, continuous layer covering the particle core. The coating may avoid surface film problems when the particles are dissolved in water, even if the very hydrophobic mineral oil is less dense than water. It may be counterintuitive to include water-insoluble particles in a fertilizer particle for fertigation, however the claimed particles may be dissolved to make a fertigation solution that avoid problems in tanks, nozzles and piping of the fertigation systems.

The present disclosure provides robust fertilizer particles suitable for fertigation. A composition comprising mineral oil, primary alkylamines and water-insoluble particles may coat fertilizer particles and make them suitable for fertigation. Furthermore, the coated particles display reduced dusting tendency. The coating composition may be applied as a thin, single, continuous layer covering the particle core. The coating may avoid surface film problems when the particles are dissolved in water, even if the very hydrophobic mineral oil is less dense than water. It may be counterintuitive to include water-insoluble particles in a fertilizer particle for fertigation, however the claimed particles may be dissolved to make a fertigation solution that avoid problems in tanks, nozzles and piping of the fertigation systems.

A bioavailable mineral fertilizer composition comprising glacial gravel dust, basalt powder, phosphate, calcium carbonate, potassium, seawater solids, fulvic acid, humic acid, bentonite clay, endo or ecto mycorrhizae or other fungi spores, kelp meal powder, microalgae and/or other protein powder, bacteria and/or yeast, wheat bran or stabilized rice bran, and organic blackstrap molasses powder.

A bioavailable mineral fertilizer composition comprising glacial gravel dust, basalt powder, phosphate, calcium carbonate, potassium, seawater solids, fulvic acid, humic acid, bentonite clay, endo or ecto mycorrhizae or other fungi spores, kelp meal powder, microalgae and/or other protein powder, bacteria and/or yeast, wheat bran or stabilized rice bran, and organic blackstrap molasses powder.

Multi jet abrasive head for cleaning/removing material surfaces and splitting/cutting materials by a liquid beam enriched with solid abrasive particles with a uniform velocity and density profile allowing the cutting power to be increased with more efficient cutting beam usage.

The invention relates to the field of slow/controlled release fertilizer, in particular to a urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer and a preparation method thereof. The urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer comprises ammonium polyphosphate, inorganic silica gel and urea-formaldehyde, wherein the phosphorus-oxygen double bond of ammonium polyphosphate can at least form hydrogen bond linkage with a urea-formaldehyde molecule chain, the hydroxyl group of the inorganic silica gel can at least form hydrogen bond linkage with the urea-formaldehyde molecular chain, and ammonium polyphosphate, inorganic silica gel and urea-formaldehyde together form a hydrogen bond associated polymer network structure. The invention can prepare a urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer comprising a strong hydrogen bond network structure by using a conventional aqueous solution polymerization in combination with a normal temperature extrusion granulation process, avoiding the coating process in the latter stage of the preparation of a coated fertilizer, achieving a simple and effective preparation process, and saving a lot of manpower and material resources. The urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer provided by the invention can stably and continuously release nitrogen nutrient throughout the release period, thereby making up for the shortcoming of excessively long nutrient release period of the existing urea-formaldehyde fertilizers.

The invention relates to the field of slow/controlled release fertilizer, in particular to a urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer and a preparation method thereof. The urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer comprises ammonium polyphosphate, inorganic silica gel and urea-formaldehyde, wherein the phosphorus-oxygen double bond of ammonium polyphosphate can at least form hydrogen bond linkage with a urea-formaldehyde molecule chain, the hydroxyl group of the inorganic silica gel can at least form hydrogen bond linkage with the urea-formaldehyde molecular chain, and ammonium polyphosphate, inorganic silica gel and urea-formaldehyde together form a hydrogen bond associated polymer network structure. The invention can prepare a urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer comprising a strong hydrogen bond network structure by using a conventional aqueous solution polymerization in combination with a normal temperature extrusion granulation process, avoiding the coating process in the latter stage of the preparation of a coated fertilizer, achieving a simple and effective preparation process, and saving a lot of manpower and material resources. The urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer provided by the invention can stably and continuously release nitrogen nutrient throughout the release period, thereby making up for the shortcoming of excessively long nutrient release period of the existing urea-formaldehyde fertilizers.

Aspects of the invention include compositions for fertilizing and remediating soil. Compositions according to certain embodiments include a cellulose nutrient composition, a microbial blend composition, a source of nitrogen, a source of phosphorus and exotic micronutrients. Methods for using compositions of the invention to fertilize and remediate soil and kits having one or more compositions for fertilizing and remediating soil are also described.

Aspects of the invention include compositions for fertilizing and remediating soil. Compositions according to certain embodiments include a cellulose nutrient composition, a microbial blend composition, a source of nitrogen, a source of phosphorus and exotic micronutrients. Methods for using compositions of the invention to fertilize and remediate soil and kits having one or more compositions for fertilizing and remediating soil are also described.