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Application of degradable composite material in oil absorption

A composite material and waste technology, which is applied in the fields of adsorption water/sewage treatment, grease/oily substance/float removal device, water/sludge/sewage treatment, etc. Biodegradation and other issues, to achieve the effect of easy transportation and storage, good flotation, easy recycling and post-processing

Inactive Publication Date: 2020-12-11
TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most commonly used synthetic polymer oil-absorbing materials are synthetic polymer oil-absorbing materials, but most of them are produced with petroleum as raw materials, which are not biodegradable. The follow-up treatment is troublesome and easy to cause secondary pollution. The production process is complex, the production process is dangerous, and the cost is relatively high. high
[0005] On the other hand, many oil-absorbing materials currently used are soft. After absorbing oil, they will be deformed by gravity and extrusion during the process of fishing, recovery and shipment, causing the absorbed oil to flow out, drip, and leak. new pollution

Method used

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  • Application of degradable composite material in oil absorption
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  • Application of degradable composite material in oil absorption

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Experimental program
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Embodiment approach

[0061] In the method of the present invention, it may also include the step of preparing the degradable composite material, and post-processing (such as incineration) the degradable composite material after use or absorbing oil, and the step of recycling the heat generated by incineration , so as to maximize the value of degradable composite materials and minimize carbon emissions. Therefore, according to a specific embodiment, the method includes the following steps:

[0062] (1) Preparation of degradable composite materials;

[0063] (2) contacting the degradable composite material with oil;

[0064] (3) Post-processing the oil-absorbed degradable composite material in step (2), the post-processing being at least one selected from reuse and incineration.

[0065] It should be noted that the specific content of the degradable composite material and oil (including raw materials, preparation methods and performance parameters, etc.) is as described above, and will not be repe...

preparation Embodiment 1

[0068] The bacterial strain of the cereus spp. (hereinafter referred to as YY bacteria) was transferred into the slant of the Kerner flask, and cultured at 25° C. for 7 days with PDA medium to obtain the slant bacterial strain.

[0069] The preparation method of PDA medium: take 200g of peeled potatoes, cut into small pieces, add 1L of water, boil for 30min, filter out the potato pieces, and make up the filtrate to 1.0L, which is the potato extract. Add 20.0 g of glucose and 15.0 g of agar to 1.0 L of potato extract, at natural pH, and sterilize at 121 °C for 20 min.

[0070] The slant strains were inserted into the liquid culture medium of first-grade seeds. The mass percent formula of the culture medium was: 2% soluble starch, 0.6% dry corn steep liquor powder, 0.1% potassium dihydrogen phosphate, natural pH, and sterilized at 121°C for 20 minutes. Culture conditions: liquid volume is 150mL / 500mL baffle Erlenmeyer flask, inoculum size is about 3cm 2 The bacterial lawn was c...

preparation Embodiment 2

[0073] The strain of Pleurotus rugosa (purchased from China General Microorganism Collection and Management Center, CGMCC 5.759) was transferred into the slant of the Kerner flask, cultured at 25°C for 7 days with PDA medium, and the strain of the slant was obtained.

[0074] The slant strains were inserted into PDW (Potato Dextrose Water) medium (Qingdao Rishui Biotechnology Co., Ltd.), with natural pH, and sterilized at 121°C for 20 minutes. Culture conditions: liquid volume is 150mL / 500mL baffle Erlenmeyer flask, inoculum size is about 3cm 2 The bacterial lawn was cultivated in a shaker at 25° C. at 150 rpm for 3 days to obtain a seed solution for solid cultivation (the dry weight of biomass was 9 g / L).

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Abstract

The invention relates to the field of application of biological materials, and discloses application of a degradable composite material in oil absorption, and the degradable composite material comprises a three-dimensional network structure formed by fungal hyphae and at least one lignocellulose fragment fixed by the three-dimensional network structure. The degradable composite material has good oil absorption performance and has good application potential in the aspects of petroleum leakage, removal of oil stains on water, treatment of oily wastewater and the like. On the other hand, the problem of treatment of agricultural residues such as straw and wood chips and forestry residues can be solved, the additional value of the residues is increased, environmental pollution is reduced, and coordinated development of economy, ecological environment and society is facilitated.

Description

technical field [0001] The invention relates to the application field of biological materials, in particular to the application of degradable composite materials (lignocellulosic debris-reinforced mycelia composite materials) in oil absorption. Background technique [0002] Oil pollution is divided into oil spill pollution and oily wastewater pollution. Petrochemical industry, mining industry, food industry, textile industry, metal industry, water equipment and catering industry will all produce oily wastewater. Kitchen and domestic waste are the main sources of oily wastewater in urban sewage. [0003] To deal with oil spill pollution and oily wastewater, the use of oil-absorbing materials is one of the commonly used and effective methods. Oil absorption is also one of the best choices for removing oil stains on the ground and objects. It plays a positive role in keeping the working environment of the ground, walkways and workshops clean and preventing explosion accidents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/40C02F1/28B01J20/24B01J20/30
CPCC02F1/40C02F1/286B01J20/24
Inventor 姜文侠杨萍
Owner TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
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