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

A petroleum hydrocarbon degrading bacteria and biodegradation technology, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of long cycle of bioremediation technology, lack of technology and research reports, etc. , to achieve the effect of high processing efficiency and simple production process

Inactive Publication Date: 2012-04-11
BEIJING NORMAL UNIVERSITY
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  • Claims
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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 bodie

Method used

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preparation example Construction

[0013] The invention provides a biodegradable porous plate for adsorption-biodegradation of petroleum hydrocarbon pollutants and a preparation method thereof. Spray distilled water into a container filled with liquid nitrogen and quickly freeze to make nearly spherical ice ball particles. After sieving with a sieve, select ice ball particles with a particle size range of 50-100 μm and place them in the mold cavity and compact them; Both 10% poly-β-hydroxybutyrate chloroform solution and polyoxyethylene chloroform solution are fully mixed at a volume ratio of 5:1 and cooled to -15°C; then the mixture is poured into a mold containing ice ball particles , and put it into liquid nitrogen to freeze and set the shape, and take it out after 6 hours for demoulding to obtain a solid mixture; vacuum freeze-dry the solid mixture to remove chloroform and ice ball particles to obtain a poly-β-hydroxybutyrate-polyoxyethylene composite porous plate; The porous plate is cultured in the petrol...

Embodiment

[0016] The biodegradable porous plate for adsorption-biodegradation of petroleum hydrocarbon pollutants prepared by the method of the present invention has carried out adsorption and biodegradation tests on the petroleum hydrocarbons in the oil spill polluted water body, and the results show that the porous plate can degrade the petroleum hydrocarbons in the water body. Effective adsorption and biodegradation: When the initial concentration of petroleum hydrocarbons in the polluted water body is 54.6mg / L, the concentration of petroleum hydrocarbons in the water can be reduced to 0.01mg / L after 1 day, and the concentration of petroleum hydrocarbons in the porous plate is not detected after 35 days.

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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...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 豆俊峰马梦娇程莉蓉丁爱中郑蕾李帅冉王鸿婷
Owner BEIJING NORMAL UNIVERSITY
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