Biodegradable multifunctional oil-absorbing particles that can float on water surface and preparation method

Abstract

The invention discloses biodegradable multifunctional oil-absorbing particles capable of floating on a water surface and a preparation method thereof. The preparation method comprises the steps of preparing a mixed solution F from a NH4HCO3 solution, a NH4H2PO4 solution, a Ca(NO3)2 solution, a NH4OH solution, a hydrochloric acid solution, a NH4Cl water solution and an ethylenediaminetetraacetic acid calcium potassium solution; preparing a mixed solution L from urea and a formaldehyde water solution; preparing a mixed solution M from a poly beta-hydroxybutyrate chloroform solution and a polyethylene glycol chloroform solution; dropping the mixed solution L into the mixed solution M to obtain a mixed solution N; dropping the mixed solution F into the mixed solution N to obtain a mixed solution O; dropping the mixed solution O into a polyvinyl alcohol solution to obtain a mixed solution P; adding the polyvinyl alcohol solution into the mixed solution P, then performing centrifugal separation, and freeze-drying to obtain the biodegradable multifunctional oil-absorbing particles capable of floating on the water surface. The preparation process disclosed by the invention is simple, and the prepared oil-absorbing particles have the nitrogen and phosphorus sustained release function, the function of adsorbing petroleum hydrocarbons and the biodegradability.

Description

technical field [0001] The invention belongs to the technical field of oil-spill-polluted water treatment, and in particular relates to a biodegradable multifunctional oil-absorbing particle that can float on the water surface and a preparation method. 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 present, there are mainly physical met...

AI Technical Summary

Problems solved by technology

In order to further popularize and apply the combination of physical adsorption method and enhanced degradation of immobilized microorganisms in the treatment of oil spill pollution in water bodies, it is necessary to develop a biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradable biodegradant that has the functions of slow release of nitrogen and phosphorus elements and physical adsorption and biodegradation of petroleum hydrocarbons at the same time. materials, which is of great significance for improving the treatment efficiency of water body oil spill pollution and reducing environmental pollution, but there is still a lack of technology and research reports in this area