A method for preparing urea ammonium nitrate solution from waste nitric acid after stripping tin from circuit board includes: causing the waste nitric acid after stripping tin and the ammonia water to undergo neutralizing and precipitating reaction through acid-base neutralization, filtering, thereby obtaining tin-containing filter mud and a primary filtrate; adding iron powders into to the primary filtrate to initiate copper-iron replacement reaction, filtering, thereby obtaining iron-containing coarse copper powders and a secondary filtrate; adding hydrogen peroxide to the secondary filtrate, filtering, thereby obtaining an iron-containing sludge and a tertiary filtrate; adding a heavy metal capturing agent to the tertiary filtrate, filtering, thereby obtaining a heavy metal sludge and an ammonium nitrate solution; measuring a concentration of the ammonium nitrate solution, adding urea and liquid fertilizer corrosion inhibitor to obtain a urea/ammonium nitrate dilute solution, evaporating and concentrating the urea/ammonium nitrate dilute solution, thereby obtaining the urea ammonium nitrate solution.

A method for preparing urea ammonium nitrate solution from waste nitric acid after stripping tin from circuit board includes: causing the waste nitric acid after stripping tin and the ammonia water to undergo neutralizing and precipitating reaction through acid-base neutralization, filtering, thereby obtaining tin-containing filter mud and a primary filtrate; adding iron powders into to the primary filtrate to initiate copper-iron replacement reaction, filtering, thereby obtaining iron-containing coarse copper powders and a secondary filtrate; adding hydrogen peroxide to the secondary filtrate, filtering, thereby obtaining an iron-containing sludge and a tertiary filtrate; adding a heavy metal capturing agent to the tertiary filtrate, filtering, thereby obtaining a heavy metal sludge and an ammonium nitrate solution; measuring a concentration of the ammonium nitrate solution, adding urea and liquid fertilizer corrosion inhibitor to obtain a urea/ammonium nitrate dilute solution, evaporating and concentrating the urea/ammonium nitrate dilute solution, thereby obtaining the urea ammonium nitrate solution.

A method for preparing urea ammonium nitrate solution from waste nitric acid after stripping tin from circuit board includes: causing the waste nitric acid after stripping tin and the ammonia water to undergo neutralizing and precipitating reaction through acid-base neutralization, filtering, thereby obtaining tin-containing filter mud and a primary filtrate; adding iron powders into to the primary filtrate to initiate copper-iron replacement reaction, filtering, thereby obtaining iron-containing coarse copper powders and a secondary filtrate; adding hydrogen peroxide to the secondary filtrate, filtering, thereby obtaining an iron-containing sludge and a tertiary filtrate; adding a heavy metal capturing agent to the tertiary filtrate, filtering, thereby obtaining a heavy metal sludge and an ammonium nitrate solution; measuring a concentration of the ammonium nitrate solution, adding urea and liquid fertilizer corrosion inhibitor to obtain a urea/ammonium nitrate dilute solution, evaporating and concentrating the urea/ammonium nitrate dilute solution, thereby obtaining the urea ammonium nitrate solution.

A dry and solid fertiliser in the form of discreet particles is provided. The particles of the dry and solid fertiliser comprise a homogenous mixture of organic and inorganic materials. The inorganic material comprises at least one of the NPKS nutrients. The organic material comprises a carbon-labile substantially sterile product of organic waste.

The present specification describes increasing the Brix degree, nutrient transport and density, and yields of cannabis crops through the application of photoacoustic resonance to a nutrient formulation. An activated nutrient solution is obtained by forming an unactivated nutrient solution and applying to the unactivated nutrient solution ultra-rapid impulses of modulated laser light, from one or more laser systems. An increase of at least 5% in the Brix degree of the crop, relative to an unactivated nutrient formulation, can be achieved. In addition, an increase of at least 5%, relative to an unactivated nutrient formulation, is seen with respect to nutrient density and crop yield through application of the activated nutrient solution.

The present specification describes increasing the Brix degree, nutrient transport and density, and yields of cannabis crops through the application of photoacoustic resonance to a nutrient formulation. An activated nutrient solution is obtained by forming an unactivated nutrient solution and applying to the unactivated nutrient solution ultra-rapid impulses of modulated laser light, from one or more laser systems. An increase of at least 5% in the Brix degree of the crop, relative to an unactivated nutrient formulation, can be achieved. In addition, an increase of at least 5%, relative to an unactivated nutrient formulation, is seen with respect to nutrient density and crop yield through application of the activated nutrient solution.

The present disclosure relates to the field of agrochemical compositions and formulations. In an aspect, the present disclosure provides for a composition in combination with a fibril or microfibril or nanofibril structuring agent. In yet another aspect, the disclosure provides for a composition comprising: (a) an agricultural bioactive material, a fungicide, insecticide, herbicide, and/or plant growth regulator; (b) a fibril or microfibril or nanofibril structuring agent; and (c) optionally, an auxiliary surface active agent. The disclosure further provides for a comprising a composition described herein mixed or combined with a liquid fertilizer.

The present disclosure relates to the field of agrochemical compositions and formulations. In an aspect, the present disclosure provides for a composition in combination with a fibril or microfibril or nanofibril structuring agent. In yet another aspect, the disclosure provides for a composition comprising: (a) an agricultural bioactive material, a fungicide, insecticide, herbicide, and/or plant growth regulator; (b) a fibril or microfibril or nanofibril structuring agent; and (c) optionally, an auxiliary surface active agent. The disclosure further provides for a comprising a composition described herein mixed or combined with a liquid fertilizer.

The present application relates to a combined NPK-Si fertilizer product comprising a mineral NPK fertilizer, which comprises at least one nutrient compound of nitrogen, phosphorous or potassium, and a particulate amorphous silicon dioxide, wherein the ratio of the mineral NPK fertilizer to the amorphous silicon dioxide is from 10:90 to 90:10, based on the dry weight of the at least one nutrient compound of nitrogen, phosphorous or potassium, and the amorphous silicon dioxide contained in the product. The application also relates to the method of production of the inventive NPK-Si fertilizer.

The present application relates to a combined NPK-Si fertilizer product comprising a mineral NPK fertilizer, which comprises at least one nutrient compound of nitrogen, phosphorous or potassium, and a particulate amorphous silicon dioxide, wherein the ratio of the mineral NPK fertilizer to the amorphous silicon dioxide is from 10:90 to 90:10, based on the dry weight of the at least one nutrient compound of nitrogen, phosphorous or potassium, and the amorphous silicon dioxide contained in the product. The application also relates to the method of production of the inventive NPK-Si fertilizer.