Biochar-based slow-release embedded microcapsule and preparation method thereof

Abstract

The invention relates to a biochar-based slow-release embedded microcapsule and a preparation method thereof.The biochar-based slow-release embedded microcapsule comprises biochar powder, a polylactic acid layer arranged outside the biochar powder, an embedding layer arranged outside the polylactic acid layer and a dip-coating layer arranged outside the embedding layer, and the preparation method of the biochar-based slow-release embedded microcapsule comprises the steps that the biochar powder is prepared, core layer particles are prepared, and the core layer particles are prepared. And coating the core layer particles in a gel immobilization solution to prepare embedding and immobilizing layer particles, and coating the embedding and immobilizing layer particles with the dip-coating layer to form the biochar multi-stage embedding sustained-release capsule. The preparation method disclosed by the invention is relatively simple, the hardness is proper, and after multi-layer embedding, a stable biological slow-release effect is achieved, so that the composite material can be used as a carrier of various organisms, is in a solid state and is convenient to store and transport.

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