Method for preparing gamma-aluminium oxide (Al2O3) framework material by using erythromycin fungus dreg produced by fermentation method as core-shell material

Abstract

The invention discloses a method for preparing a gamma-aluminium oxide (Al2O3) framework material by using erythromycin fungus dreg which is produced by a fermentation method as a core-shell material. The method is characterized by comprising the following steps of: extracting erythromycin and an amino acid from the erythromycin fungus dreg which is produced by the fermentation method by using deionized water or distilled water; carrying out pressure filtration; carrying out syneresis treatment on the fungus dreg which is subjected to the pressure filtration for 2 to 4 hours at the temperature of 150 to 200 DEG C; and then carrying out solid-phase transition for 4 to 6 hours at the temperature of 650 to 800 DEG C to obtain the gamma-Al2O3 framework material. In the method, a residue culture medium and a mycelium in the erythromycin fungus dreg which is produced by the fermentation method serve as the core-shell material, and a metal aluminium ion source which is provided by a flocculating agent in the fungus dreg is utilized fully, so that resources are saved, production cost is low, the porous gamma-Al2O3 framework material with high chemical activity is produced, a good economicbenefit is brought, and the problem of little erythromycin residue in the fungus dreg is also solved. Moreover, the method is environment-friendly and secondary pollution is avoided.

Description

technical field [0001] The invention belongs to the field of recovery and utilization of waste pharmaceutical residues, and in particular relates to a method for preparing γ-Al by using fermentation method to produce erythromycin residues as core-shell materials. 2 o 3 Skeleton method. Background technique [0002] In the process of producing erythromycin raw material medicine by fermentation method in my country, the separation of fungus residue is first to use flocculant to make mycelium and residual medium produce flocculation phenomenon, so as to facilitate the subsequent pressure filtration and essence liquid and its erythromycin prime extract. This industry involves 17 manufacturers, large and small, from east to west, north, south, and north, most of which use polyaluminum trichloride as a flocculant, and the added metal aluminum ion content is as high as 8%wt; this industry in my country uses trichloride every year Aluminum chloride is used as a flocculant, and the ...

AI Technical Summary

Problems solved by technology

For decades, people have tried to utilize erythromycin residue as a resource, but all previous research work has focused on using the protein rich in the residue (18-22%wt) as animal feed or anaerobic fermentation of the residue Produce methane combustible gas; therefore, a common problem remains unresolved, that is the problem of erythromycin drug residues and Streptomyces rubrum anti-phage inactivation

However, many manufacturers still use the "dangerous goods landfill" method to dispose of the fungus residue, which not only fails to fundamentally solve the environmental protection problem, but also causes a huge waste of resources.

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