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Surfactant-enhanced tourmaline-like Fenton-like microbial remediation method for polybrominated diphenyl ether-contaminated soil

A surfactant and polybrominated diphenyl ether technology, applied in the field of biological treatment of persistent organic pollutants in soil environment, can solve problems such as the impact of pollutants' bioavailability, and achieve the effects of promoting degradation, high research value, and improving removal rate

Active Publication Date: 2020-03-06
NANKAI UNIV
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Problems solved by technology

On the other hand, surfactants can also negatively affect the bioavailability of pollutants

Method used

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  • Surfactant-enhanced tourmaline-like Fenton-like microbial remediation method for polybrominated diphenyl ether-contaminated soil
  • Surfactant-enhanced tourmaline-like Fenton-like microbial remediation method for polybrominated diphenyl ether-contaminated soil
  • Surfactant-enhanced tourmaline-like Fenton-like microbial remediation method for polybrominated diphenyl ether-contaminated soil

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Embodiment Construction

[0028] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0029] Surfactant-enhanced tourmaline-like Fenton combined with microorganisms to remediate PBDE-contaminated soil experimental operation is as follows:

[0030] (1) Basic materials:

[0031] Tourmaline (tourmaline): 1000 mesh industrial grade reagent, purchased from Health Stone Processing Factory in Lingshou County, Hebei Province, the place of origin is Xinjiang.

[0032] (2) Preparation of contaminated soil:

[0033] The soil was collected from the surface soil (0-20cm) near the electric wire dismantling factory in Jinghai County, Tianjin, air-dried naturally, passed through a 2mm sieve to remove impurities and homogenized, and stored in a cool and dry place for later use. The pH is 7.2, which is weakly alkaline. Seven kinds of PBDEs ...

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Abstract

The invention relates to a method for remedying polybrominated diphenyl ethers-polluted soil through surface active agent reinforced tourmaline Fenton-like associated microorganisms. The PBDEs-polluted actual soil around an electronic waste dump is remedied through the surface active agent reinforced tourmaline Fenton-like associated microorganisms for the first time. The total remediation efficiency of PBDEs can be as high as 75% through the novel composite remedying method, and the highest individual PBDE remedying efficiency reaches 86%. Meanwhile, reproduction of the microorganisms in the soil can be promoted, and compared with tourmaline Fenton-like auxiliary microorganisms, the degradation efficiency of the PBDEs is improved by 30%. Therefore, through the novel composite remedying method through the novel surface active agent reinforced tourmaline Fenton-like associated microorganisms, the PBDEs in the actual soil can be effectively removed, so that the risk that crops absorb the PBDEs is reduced, human health is ensured, and the method has important scientific value and application significance.

Description

technical field [0001] The invention belongs to the technical field of biological treatment of persistent organic pollutants in the soil environment, and relates to a Fenton-like reaction of tourmaline as a material, in particular to a method for remediating polybrominated diphenyl ether-contaminated soil by strengthening tourmaline-like Fenton combined with microorganisms with surfactants. Background technique [0002] In the late 1970s, a new class of pollutants—polybrominated diphenyl ethers (PBDEs)—was detected in environmental samples. They were found in electrical appliances such as televisions, computer circuit boards and casings, building materials, foams, upholstery, furniture, and automobiles. It is mass-produced as a flame retardant in the coating, textile and chemical industries. Due to their similar chemical structure to polychlorinated biphenyls (PCBs) and DDT, PBDEs have significant persistence and bioaccumulation, but their pollution problems were not paid mu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/10B09C1/08
CPCB09C1/08B09C1/10
Inventor 王翠苹贾伟丽李静殷梦菲孙红文
Owner NANKAI UNIV
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