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Adsorption materials and methods for treating contaminants

A technology for adsorbing materials and pollutants, applied in the field of adsorbent materials for treating pollutants, can solve the problem of high implementation cost, and achieve the effects of reducing environmental damage, improving cell biological stability, and strong adsorption capacity

Active Publication Date: 2020-09-01
威尔资源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Koustas et al proposed [Koustas, R., Singhvi, R., Mohn, M., US EPA, Contaminants and Remedial Options at Pesticide Sites, 1994] traditional soil remediation strategies such as stabilization and curing, soil washing, thermal Desorption, solvent extraction, and bioremediation, etc., but implementation costs are often high, especially when large areas and large volumes of soil have to be decontaminated

Method used

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  • Adsorption materials and methods for treating contaminants
  • Adsorption materials and methods for treating contaminants
  • Adsorption materials and methods for treating contaminants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1: Generation of Asphaltenes

[0052] The present invention is based on the results of a series of experimental studies aimed at determining the chemistry and reactivity of asphaltenes in the form of solid particles from "Deep step separation of heavy oils by coupled raffinate granulation" Method and Treatment System" (US Pat. No. 7,597,794) using feedstocks of mined Canadian athabasca oil and bitumen-derived vacuum residue (VR). Solid asphaltene was extracted from VR by a low-complexity and low-energy-intensity solvent-based separation method as documented (see Tables 1 and 2).

[0053] Tables 1 and 2 show the approximate and elemental analysis of the asphaltenes. The data show that asphaltenes from mineral oils and bitumen VR contain high contents of ash, sulfur and metals and were selected as representative samples to illustrate the extremes of petroleum asphaltenes utilization. Zhao et al. reported a comparison of the properties of various petroleum-derive...

Embodiment 2

[0059] Example 2: Evaluation of Asphaltene Leachability

[0060] A modified leachability test was performed on the asphaltenes described in Example 1.

[0061] The asphaltenes obtained in the above examples were sieved with a 150-mesh biological cell filter, and the asphaltene particles with particles larger than 100 microns were collected for the leachability test. Fill a 5 mL glass burette with 100 μl of glass beads until 2 mL is gradually level, then fill with 0.25 g of the above sieved 100 μm asphaltene particles. The first test was performed with deionized water.

[0062] Inject 5 mL of deionized water into the above-mentioned buret containing glass beads and asphaltene particles, and soak for 24 hours. After that, the leachate in the burette was drained drop by drop and collected. Add another 5 mL of fresh deionized water to the buret again. Similar soaking / leaching procedures were repeated three times to obtain a total of at least 10 mL of leachate; meanwhile, no as...

Embodiment 3

[0072] Example 3: Use of Asphaltenes for Water Treatment

[0073] The asphaltenes described in Example 1 were used as adsorbents for water treatment.

[0074] The asphaltenes obtained in the above examples were sieved with a 150-mesh biological cell filter, and the asphaltene particles with particles larger than 100 microns were collected for filtration test.

[0075] Fill a 5 mL glass burette with 100 μl of glass beads until the 2 mL is gradually level, then fill with 0.25 g of the 100 μm asphaltene particles collected above. The test fluids were four drainage samples obtained from agricultural fields. Inject 5mL of drain water into the above-mentioned buret containing glass beads and asphaltene granules, and soak for 24 hours. Afterwards, the filtrate from the buret was titrated and collected. Then add another different drainage sample to the burette as described above. A similar soaking / filtration procedure was repeated five times, resulting in a total of at least 20 mL...

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Abstract

The invention provides an adsorbent material and method for treating contaminants. The adsorbent material is made to contact with asphaltene to adsorb one or more contaminants. For example, the asphaltene can be used to treat or repair contaminations including water and soil. Asphaltene in the form of particles or fibers is also provided for adsorbing substances such as organic contaminants from water or soil. Thus, a method for biochemically degrading pollutants by combining the asphaltene and microorganisms is realized. The present invention provides an adsorbent material for removing contaminants from contaminants. The adsorbent material comprises asphaltene. A whole process is green and environment-friendly; and the adsorbent material and method have a good application prospect.

Description

technical field [0001] The invention relates to the treatment of environmental pollution, in particular to an adsorption material and method for treating pollutants. Background technique [0002] The pollution of water and soil, including dissolved organic matter, sewage, agricultural chemicals, etc., leads to environmental damage for a considerable period of time. Treatment of contaminated water or soil is often costly and inefficient, and can sometimes lead to further environmental pollution, for example when chemical means are added to address other, more harmful chemicals . Various solutions are currently available including therapeutic and preventive means, physical methods, filtration and chemical treatment methods, etc., to remove or reduce the level of pollutants in water and soil. These solutions, while effective to a certain extent, all suffer from certain drawbacks. An example of an existing solution is the treatment of sewage using activated carbon, for exampl...

Claims

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Application Information

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IPC IPC(8): B01J20/22B09C1/00B09C1/10C02F1/28C02F101/30
CPCB01J20/22C02F1/286B09C1/00B09C1/10C02F2101/30B01J20/28023B01J20/2805B01J20/26C02F1/285C02F3/348C02F3/345C02F3/341C02F2103/007B09C1/08B09C2101/00Y02W10/10C02F2103/34
Inventor 庄荣益李学兵于培崔孟涛史权许志明赵锁奇徐春明庄庆发
Owner 威尔资源有限公司
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