Biodegradable perforated plate for adsorption and biodegradation of petroleum hydrocarbon pollutants as well as its preparation method

Abstract

The invention discloses a biodegradable perforated plate for adsorption and biodegradation of petroleum hydrocarbon pollutants as well as its preparation method. The method comprises the steps of: spraying distilled water into a container loaded with liquid nitrogen for rapid refrigeration so as to prepare spheroidal ice ball particles, which are sieved by a sieve and then placed in a mould cavity for compaction; mixing 10 mass percent of a poly-beta-hydroxybutyrate chloroform solution and 10 mass percent of a polyoxyethylene chloroform solution fully in a volume ratio of 5:1, cooling the mixture, and then pouring it into the mould loaded with ice ball particles for freezing molding, then carrying out demoulding and vacuum freeze drying for removing chloroform and ice ball particles, thusobtaining a composite perforated plate of poly-beta-hydroxybutyrate and polyoxyethylene; culturing the perforated plate in a culture solution of petroleum hydrocarbon degrading bacteria for 24h, thentaking it out for air drying, thus obtaining a biodegradable perforated plate for adsorption and biodegradation of petroleum hydrocarbon pollutants. The preparation method of the invention has a simple process, and the prepared perforated plate has high treatment efficiency to petroleum hydrocarbon pollutants, and cause no secondary pollution and destruction to a water ecological environment.

Description

technical field [0001] The invention belongs to the technical field of physical adsorption and biodegradation treatment of oil-spill-polluted water bodies, and in particular relates to a biodegradable porous plate for adsorbing and biodegrading petroleum hydrocarbon pollutants and a preparation method thereof. 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 mus...

AI Technical Summary

Problems solved by technology

However, the cycle of bioremediation technology is relatively long, and at the same time, limited by the existence of highly efficient petroleum hydrocarbon degrading bacteria, the physical adsorption method faces the problem of reprocessing the adsorbent after the adsorption is saturated. If the physical adsorption method and biodegradation can be combined It can make up for the deficiencies of the two, and it will have greater advantages in dealing with oil spill pollution in water bodies.

[0004] However, in order to further promote and apply the technology of combining physical adsorption and biodegradation in the treatment of oil spill pollution in water bodies, materials with both physical adsorption and biodegradation functions have been developed, which will help improve the efficiency of oil spill pollution treatment in water bodies, It is of great significance to reduce environmental pollution, but there is still a lack of technology and research reports in this area