Method for preparing strontium-rich activated carbon by aid of hydrothermal processes

Abstract

The invention discloses a method for preparing strontium-rich activated carbon by the aid of hydrothermal processes. The method includes steps of a), pretreating activated carbon, to be more specific,placing the proportioned activated carbon in diluted edible hydrochloric acid solution, heating the proportioned activated carbon in the diluted edible hydrochloric acid solution, carrying out impurity removal cleaning, further carrying out suction filtration, repeatedly washing the activated carbon, washing off surface residual acid liquid, boiling the activated carbon by water, then repeatedlyrinsing the activated carbon until the pH (potential of hydrogen) value of the activated carbon is 6.5-8.5, placing the activated carbon in drying ovens and drying the activated carbon for standby application; b), impregnating and loading strontium salt, to be more specific, slowly adding the pretreated proportioned activated carbon into impregnation liquid with diffusing agents and coupling agents, impregnating and stirring the activated carbon for 10 min, then adding strontium salt solution into the impregnation liquid and uniformly mixing and stirring the strontium salt solution and the activated carbon with each other in the impregnation liquid; c), carrying out hydrothermal reaction procedures, to be more specific, placing impregnated activated carbon solution in hydrothermal reactionkettles, keeping the temperatures constant for 2-6 hours after the hydrothermal reaction temperatures are increased and reach 130-250 DEG C and the pressures of the reaction kettles reach approximately 1MPa, carrying out still standing and temperature reduction after reaction is completely carried out, carrying suction filtration and cleaning, washing off surface residual impregnation liquid, then placing reaction products in drying ovens, and drying the reaction products at the temperatures of 120-150 DEGC to obtain the impregnated-hydrothermal strontium-rich activated carbon.

Description

Technical field [0001] The invention belongs to the technical field and application of activated carbon deep processing preparation. It specifically relates to the application of strontium-rich activated carbon in the field of drinking water. Background technique [0002] As we all know, water is the most important component of the human body, but for many years the nutritional contribution of water to the human body is often ignored. Natural waters contain calcium, magnesium, sodium, potassium, bicarbonate, sulfate, silicon, zinc, iodine, fluorine, chromium, lithium, molybdenum, selenium, cobalt, vanadium and many other soluble mineral ions. They are biologically used A good source of high-quality minerals, so drinking a proper amount of natural mineral water is good for the body and can supplement some trace elements to the body. The mineral element strontium in an appropriate amount is beneficial to human health. Strontium can regulate the differentiation of bone marrow mese...

AI Technical Summary

Problems solved by technology

[0004] The strontium-loaded activated carbon prepared by impregnation, co-precipitation and other modification methods has problems such as active component crystallites blocking the micropores, reducing pore volume and adsorption capacity; the active component and the carrier are not firmly combined and easy to fall off.