Recyclable super-hydrophobic oil adsorbent

Abstract

According to the recoverable super-hydrophobic oil adsorbent provided by the utility model, the oil can be efficiently adsorbed through the unique oil adsorption particle design. The oil absorption particles are prepared by taking inorganic silicate as a matrix, and a porous gas phase structure is attached to the outer surface of each oil absorption particle, so that the oil absorption particles have excellent oil absorption performance, and the oil absorption rate is up to 117.79% and is far higher than that of a common oil adsorption material; due to the design of the water filtering and oil collecting net bag, the adsorbent not only can adsorb oil liquid, but also can effectively filter water, so that the high purity of the adsorbed oil liquid is ensured. The design is very useful in practical application, and can greatly improve the oil recovery efficiency and quality especially in an environment containing an oil and water mixture. Due to the material and design of the oil absorption particles and the water filtering and oil collecting net bag, the adsorbent can be recycled and reused after being used, so that the pollution to the environment and the waste of resources are reduced, and the applicable scene range is expanded.

Description

Technical Field

[0001] This utility model relates to the field of new adsorption materials technology, specifically a recyclable superhydrophobic oil adsorbent. Background Technology

[0002] Oil pollution has always been a significant issue affecting people's lives and sustainable development. Among the problems related to oil treatment are the handling of oil spills and the treatment of oily wastewater, with adsorption being the most effective method currently available. To avoid secondary pollution and to achieve efficient and recyclable oil separation, biomass fuels, due to their low cost, availability, biodegradability, and ease of processing, have gradually become a hot topic in materials research.

[0003] Currently, developed oil-absorbing materials are mainly divided into two types: inorganic oil-absorbing materials and organic oil-absorbing materials. Due to the drawbacks of natural organic oil-absorbing materials—they sink after absorbing liquid, have poor hydrophobicity, are difficult to recycle, and are challenging to handle oil-water emulsions—their application in oil-water systems is limited. Magnetic recyclable superhydrophobic adsorbents synthesized from wood flour are a new type of petroleum adsorbent material, particularly suitable for recovering floating oil on water surfaces. They also possess the advantages of absorbing a wide variety of oil types and absorbing oil without absorbing water. Currently known oil adsorbents that simultaneously possess superhydrophobic / superoleophilic and magnetic properties are mostly prepared using hydrothermal synthesis methods. However, these methods have the following problems: First, the equipment requires high-temperature and high-pressure resistant steel, corrosion-resistant linings, strict temperature and pressure control, and high costs; second, safety is poor, as the fluid volume expands in the sealed reactor during heating, generating extremely high pressure and posing significant safety hazards; finally, high temperatures can damage the internal structure of the raw material substrate, thus affecting the adsorption effect of the final adsorbent. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a recyclable superhydrophobic oil adsorbent.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This application provides a recyclable superhydrophobic oil adsorbent, including oil-absorbing particles and a filter oil collection net surrounding the oil-absorbing particles. The oil-absorbing particles are made of inorganic silicate as a matrix, and the outer surface of the oil-absorbing particles is attached with a porous gas phase structure. The oil absorption rate of the oil-absorbing particles is 117.79%.

[0006] As a preferred embodiment of this application, a modified coating is applied to the outer surface of the oil-absorbing particles. This coating is composed of polydimethylsiloxane and magnetic nanoparticles.

[0007] As a preferred embodiment of this application, the magnetic nanoparticles are Fe3O4 nanoparticles, and their content is 10% to 30% of the total weight of the modified coating.

[0008] As a preferred embodiment of this application, the adsorbent has an adsorption capacity of 1.17 L per kilogram.

[0009] As a preferred embodiment of this application, the combustion boiling point of the oil-absorbing particles is 1200°C.

[0010] As a preferred embodiment of this application, the oil-absorbing particles are gathered in the oil-filtering mesh bag, and a floating plate is provided along the side wall of the oil-filtering mesh bag.

[0011] As a preferred embodiment of this application, the end of the water filter and oil collection net is connected by a traction rope to form a circular shape.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This application presents a recyclable superhydrophobic oil absorbent that efficiently adsorbs oil through a unique oil-absorbing particle design. The oil-absorbing particles are made of inorganic silicate as a matrix, with a porous gas-phase structure attached to their outer surface. This structure gives the particles excellent oil absorption performance, with an oil absorption rate as high as 117.79%, far exceeding that of general oil absorbent materials. Through the design of a water-filtering and oil-collecting mesh, the absorbent not only adsorbs oil but also effectively filters out water, ensuring high purity of the adsorbed oil. This design is very useful in practical applications, especially in handling environments containing oil and water mixtures, significantly improving the efficiency and quality of oil recovery. Due to the materials and design of the oil-absorbing particles and the water-filtering and oil-collecting mesh, the absorbent can be recycled and reused after use, reducing environmental pollution and resource waste, and expanding its applicable scenarios. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the internal structure of the oil-absorbing particles in this utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0017] In the diagram: 1. Oil-absorbing particles; 11. Inorganic silicate; 12. Modified coating; 121. Polydimethylsiloxane; 122. Magnetic nanoparticles; 2. Water-filtering and oil-collecting net; 3. Floating board; 4. Traction rope. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figure 1-2 As shown, the characteristics of this R&D technology are: it uses porous inorganic materials as the base material; it is natural, non-toxic and odorless; it has a unique single-molecule full-coverage gas phase modification process; it only absorbs oil and not water; its hydrophobicity reaches 99%; it is resistant to high temperatures and can absorb oil at 1000℃ and can absorb oil on the surface of water at 0-100℃. The higher the oil or water temperature, the higher the absorption efficiency; it has a large oil absorption capacity and high oil retention rate; the adsorbed oil can be recycled and reused; it will not cause secondary pollution to water bodies; it is easy to store, and the product has a wide range of applications. After absorbing oil, it floats on the water surface, making recycling convenient; the adsorbed oil can be recycled and reused. Its main application scenarios include ports and docks, laboratories, oil spills on rivers and seas, emergency oil spill treatment, machinery manufacturing and processing, and edible oil production. Its absorption range includes: more than 50 kinds of oils, gasoline, diesel, engine oil, residual oil, tar, and edible oil; heavy metal ions, cadmium, lead, manganese, cesium, vanadium, thallium, copper, etc.; non-polar liquids, triethanolamine, concentrated sulfuric acid, ammonium sulfide solution, trichloroethylene, chloroform, dichloromethane, cyclohexane, acetic acid, and anhydrous ethanol.

[0020] A modified coating 12 is applied to the outer surface of the oil-absorbing particles 1. The coating consists of polydimethylsiloxane 121 and magnetic nanoparticles 122, which endows the adsorbent with superhydrophobic and superoleophilic properties.

[0021] The magnetic nanoparticles 122 are Fe3O4 nanoparticles, and their content is 10% to 30% of the total weight of the modified coating 12, which makes the adsorbent magnetic and easy to recycle.

[0022] It has good adsorption performance, and the adsorbent has an adsorption capacity of 1.17 L per kilogram.

[0023] For stability and safety in high-temperature environments, the oil-absorbing particles 1 have a combustion boiling point of 1200℃.

[0024] Since the oil-absorbing particles 1 of this application have some sedimentation after absorbing oil, in order to effectively ensure that they float on the sea surface and facilitate manual recovery, the oil-absorbing particles 1 are gathered in the filter oil collection net 2, and a floating plate 3 is provided along the side wall of the filter oil collection net 2. The floating plate 3 is made of foam material support rod, and the filter oil collection net is made of polyethylene nylon.

[0025] To improve the convenience and efficiency of operation, the end of the filter oil collection net 2 is connected to form a ring shape by a traction rope 4. This design can also be used to collect floating garbage on the sea surface.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A recyclable superhydrophobic oil adsorbent, characterized in that, It includes oil-absorbing particles (1) and a filter oil collection net (2) that surrounds the oil-absorbing particles (1). The oil-absorbing particles (1) are made of inorganic silicate (11) as the matrix, and the outer surface of the oil-absorbing particles (1) is attached with a porous gas phase structure. The oil absorption rate of the oil-absorbing particles (1) is 117.79%.

2. The recyclable superhydrophobic oil adsorbent as described in claim 1, characterized in that, A modified coating (12) is applied to the outer surface of the oil-absorbing particles (1), the coating being composed of polydimethylsiloxane (121) and magnetic nanoparticles (122).

3. The recyclable superhydrophobic oil adsorbent as described in claim 2, characterized in that, The magnetic nanoparticles (122) are Fe3O4 nanoparticles.

4. The recyclable superhydrophobic oil adsorbent as described in claim 3, characterized in that, The adsorbent has an adsorption capacity of 1.17 L per kilogram.

5. The recyclable superhydrophobic oil adsorbent as described in claim 1, characterized in that, The combustion boiling point of the oil-absorbing particles (1) is 1200℃.

6. The recyclable superhydrophobic oil adsorbent as described in claim 1, characterized in that, The oil-absorbing particles (1) are gathered in the oil-collecting filter bag (2), and a floating plate (3) is provided along the side wall of the oil-collecting filter bag (2).

7. The recyclable superhydrophobic oil adsorbent as described in claim 6, characterized in that, The end of the filter oil collection net (2) is connected to form a ring shape by a traction rope (4).

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