A method is provided for producing a biochar solution. The method comprises the steps of collecting biochar particles, dispersing the biochar particles in a liquid solution and adding a stabilizing agent to keep the biochar in flowable suspension. The stabilizing agent may be added to the liquid solution or to the biochar prior to placing the biochar in solution.

A method for preparing an organic complex microelement fertilizer for engineering wound soil remediation includes compounding chitosan oligosaccharide or/and earthworm dung or/and silkworm sand, water or/and hydrogen peroxide, an organic complex trace element solution, polyethylene glycol octyl phenyl ether, and polysorbate under certain conditions. The present invention can significantly improve physical and chemical properties of engineering wounds, enhance effectiveness of trace elements in soil, and prevent plant physiological diseases due to lack of trace elements, and promote plant growth and development.

A method for preparing an organic complex microelement fertilizer for engineering wound soil remediation includes compounding chitosan oligosaccharide or/and earthworm dung or/and silkworm sand, water or/and hydrogen peroxide, an organic complex trace element solution, polyethylene glycol octyl phenyl ether, and polysorbate under certain conditions. The present invention can significantly improve physical and chemical properties of engineering wounds, enhance effectiveness of trace elements in soil, and prevent plant physiological diseases due to lack of trace elements, and promote plant growth and development.

A method for stabilizing fluorides and arsenic in soil includes: step 1, adding a calcium-containing compound to the soil contaminated by fluorides and arsenic, stirring uniformly, and standing for curing; step 2, adding an iron-containing compound to the mixture obtained in step 1, stirring uniformly, and standing for curing; and step 3, adding water to the mixture obtained in step 2, optionally adding a pH adjusting agent to adjust the gravimetric water content to 30%-40%, and standing for curing. The method uses calcium-containing and iron-containing compounds in a step-by-step manner, makes full use of the advantages of different passivation materials, combines the advantages of all reagents, and establishes an economical, efficient and environmentally friendly method for stabilizing fluorides and arsenic in soil to achieve effective remediation of contaminated soil.

A flow barrier for wastewater disposal ponds or pits used in oil and gas operations. The flow barrier includes a flake component, a fiber component, and a granular component. The disposal pond flow barrier may prevent the infiltration or leakage of aqueous fluids from the wastewater disposal ponds into the surrounding environment and ecosystems. A process for manufacturing and using the flow barrier in a wastewater disposal pond is also provided.

A flow barrier for wastewater disposal ponds or pits used in oil and gas operations. The flow barrier includes a flake component, a fiber component, and a granular component. The disposal pond flow barrier may prevent the infiltration or leakage of aqueous fluids from the wastewater disposal ponds into the surrounding environment and ecosystems. A process for manufacturing and using the flow barrier in a wastewater disposal pond is also provided.

The present invention provides for biochar coated particles and a method for coating the particles with biochar.

Disclosed herein is a soil remediation and soil pore stabilising composition comprising at least one electrolyte and at least one cofactor.

Disclosed herein is a soil remediation and soil pore stabilising composition comprising at least one electrolyte and at least one cofactor.

The invention relates to compositions for retaining soil moisture and improving plant growth in dry soils, which, together with one or more moisture retaining materials and wetting agents, comprises iron(III) oxides and optionally potassium metabisulfite [borken (HU), E224] as potentiating agent. The iron(III) oxides preferably are microparticulate. The composition Suitably comprises iron(III)oxides and potassium metabisulfite as potentiating agent. Other aspects of the invention relate to binding the moisture content of soils, as well as compositions for use in enhancing the efficacy of Soil retaining compositions.