Preparation method of suspended oil-absorbing microspheres capable of slow release of phosphorus and biodegradation of petroleum hydrocarbons

Abstract

The invention discloses to a preparation method of suspended oil-adsorbing microspheres capable of sustained release of phosphorus and biodegradation of petroleum hydrocarbon. A mixed solution F is prepared from an NH4HCO3 solution, an NH4H2PO4 solution, a Ca(NO3)2 solution, an NH4OH solution, a hydrochloric acid solution, an NH4Cl solution and an ethylenediamine tetraacetic acid calcium potassium solution; a mixed solution G is prepared from a poly-beta-hydroxybutyrate chloroform solution and a polyethylene glycol chloroform solution; the mixed solution F is dropwise added into the mixed solution G, and a mixed solution H is obtained; the mixed solution H is dropwise added into a polyvinyl alcohol solution to obtain a mixed solution I; the polyvinyl alcohol solution is added into the mixed solution I, then centrifugal separation and freeze drying are carried out, and the suspended oil-adsorbing microspheres are obtained. The suspended oil-adsorbing microspheres are cultured in a petroleum hydrocarbon degrading bacteria culture solution for 24 h and then are taken out for air drying. The method is simple in preparation process; and the prepared suspended oil-adsorbing microspheres have the phosphorus sustained release function, the petroleum hydrocarbon adsorption function and the petroleum hydrocarbon degradation function, and have biodegradability.

Description

technical field [0001] The invention belongs to the technical field of treatment of oil-spill-polluted water bodies, and in particular relates to a preparation method of suspended oil-absorbing microspheres capable of slow-release phosphorus and biodegradation of petroleum hydrocarbons. Background technique [0002] In recent years, with the increasing demand for oil and its products in various countries around the world, oil spill accidents have occurred frequently in the process of offshore mining, loading and unloading, transportation and utilization of oil, which not only caused a large amount of crude oil loss, but also caused serious pollution to the environment. It is increasingly threatening the ecological environment of water bodies and land areas, and has long-term harm to water body environment, natural resources and aquaculture resources. Therefore, oil spill pollution in water bodies has become a major environmental problem that people must face. [0003] At pre...

AI Technical Summary

Problems solved by technology

In order to further popularize and apply the technology of combining physical adsorption and immobilized microorganisms for enhanced degradation in the treatment of oil spill pollution in water bodies, it is necessary to develop materials with both slow-release phosphorus and physical adsorption-biodegradation of petroleum hydrocarbons. This is of great significance for improving the efficiency of oil spill pollution treatment in water bodies and reducing environmental pollution, but there is still a lack of technology and research reports in this area