Preparation method of sea urchin shaped microspheric lanthanum oxycarbonate adsorbent capable of removing phosphorus from water bodies

Abstract

The invention discloses a preparation method of a sea urchin shaped microspheric lanthanum oxycarbonate adsorbent capable of removing phosphorus from water bodies, relates to a preparation method of an adsorbent capable of removing phosphorus from the water bodies, and aims to solve the technical problems that conventional phosphorus removing methods with lanthanum elements at present are mostly based on lanthanum oxide or introduction of a lanthanum element modified adsorbent, and the saturated adsorption quantity of the lanthanum oxide or the lanthanum element modified adsorbent is relatively low. The preparation method disclosed by the invention comprises the following steps: I, performing synthesis of a microspheric adsorbent precursor; II, performing washing and drying; III, performing calcining and shaping. The preparation technology of the lanthanum oxycarbonate adsorbent prepared by the preparation method disclosed by the invention is simple, large-scale preparation can be realized, the lanthanum oxycarbonate adsorbent has good phosphorus removing effects on the water bodies, phosphorus in eutrophication water bodies can be removed to the state that the phosphorus content is 5 [mu]g / L or below, the phosphorus removing rate reaches 99% or above, and the largest saturated adsorption quantity is as high as 255.72 mg / g. The preparation method disclosed by the invention is applied to the field of water treatment.

Description

technical field [0001] The invention relates to a preparation method of an adsorbent for phosphorus removal in water bodies. Background technique [0002] Phosphorus is an important component of energy substances such as adenosine triphosphate in organisms, and is also an essential element for the synthesis of nucleic acids and certain proteins. In water bodies, phosphorus can promote the growth of aquatic plants and maintain the ecological balance of water bodies, but too much phosphorus in water bodies will lead to eutrophication of water bodies. The eutrophication of water bodies is mostly caused by human activities that discharge a large amount of nutrients such as phosphorus into water bodies. At present, rivers and lakes in most cities in China are already in a state of severe eutrophication, and have even lost their original water source function. Therefore, phosphorus removal from water bodies is very important to control eutrophication. Phosphorus removal by adsor...

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Problems solved by technology

At present, most of the studies on the application of lanthanum to phosphorus removal are based on lanthanum oxide or the introduction of lanthanum modified adsorbent, and its saturated adsorption capacity is relatively low.

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