Porous permeable geopolymer material as well as preparation method and application thereof

A technology of geopolymer and mineral powder, applied in the field of porous and permeable geopolymer materials and its preparation, can solve the problems of complex reaction wall engineering, long construction period, and large initial investment, so as to avoid the year-by-year decay of permeability coefficient, Improvement of processing capacity and improvement of adsorption efficiency

Active Publication Date: 2021-07-30
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010]Aiming at the problem that the groundwater permeable reaction wall needs to be constructed in the way of filling in the prior art, the project of the reaction wall is complicated, and the construction period is long, which causes a large initial investment

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  • Porous permeable geopolymer material as well as preparation method and application thereof

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preparation example Construction

[0046] In one or some embodiments, a method for preparing a porous permeable gemmy is provided, comprising the step of: a natural mineral or solid waste or a mixture of a highly active silica aluminum or a mixture of the ingredients under an excitation agent The formation of the formation is made as a matrix material, and the pore agent is added to the matrix and fitted from degradation of fine particles, and it is necessary after curing;

[0047] Preferably, the natural mineral of the highly active silica aluminum is a genolite;

[0048] Preferably, the solid waste is fly ash, silicon ash;

[0049] Preferably, the excitation agent is sodium hydroxide or sodium silicate or mixtures, still more preferably sodium silicate;

[0050] Preferably, the self-degradation particles are aliphatic polyester PLA.

[0051] Preferably, the following steps:

[0052] The powder, excitation agent, and aperture mixture were mixed, and the self-degradation particles were mixed with the slurry, poured...

Embodiment 1

[0077] This embodiment provides a method for preparing a porous permeable gemmy material, comprising the steps of:

[0078] (1) Pipe Preparation: 45 pieces of powder coal ash according to the above ratios, 50 parts of height, 5 silica gray, stirred and uniform.

[0079] (2) Preparation of self-degradation of PLA particles: according to 50%, 30%, 15%, 5% of the proportion of molecular weights is 5 × 10, respectively, respectively 4 , 1 × 10 5 , 1.5 × 10 5 2 × 10 5 The multi-sets of molecular weight self-destruction materials were heated to 200 ° C, respectively, respectively, the active material, respectively, to each group of molecular weights, respectively, at this temperature at 100 rpm for 2 minutes to dispersion, and then make the material Cooling at room temperature under vacuum environments, grasted, over 200 mesh-300 mesh screen, and take material spare in this interval.

[0080] (3) mixing with sodium silicate excitation: The prepared powder is mixed with a sodium silicate...

Embodiment 2

[0085] This embodiment provides a method for preparing a porous permeable gemmy material, comprising the steps of:

[0086] (1) Pubic preparation: 45 parts of the slag, 50 parts of height, 5 silica fifth parts, stirred and mixed.

[0087] (2) Preparation of self-degradation of PLA particles: Press 40%, 30%, 25%, and 5%, the molecular weight is 5 × 10, respectively. 3 , 1 × 10 4 , 5 × 10 4 , 1 × 10 5 The multi-sets of molecular weight self-resolution materials are heated to 210 ° C, respectively, and the active material is equivalent to each group of molecular weights, and the mixture is stirred at 100 rpm at 100 rpm to be uniform, and the material is vacuum The environment is cooled to room temperature, grind, over 200 mesh-300 mesh screen, and take the material spare in this interval.

[0088] (3) mixing with sodium silicate excitation: The prepared powder is mixed with a sodium silicate solution having an analog to 1.5 in a ratio of 1: 0.5.

[0089] (4) mixing with a pore agent ...

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Abstract

The invention relates to the field of groundwater pollution remediation, in particular to a porous permeable geopolymer material and a preparation method and application thereof. According to the geopolymer material, mineral powder and solid waste are subjected to a geopolymerization reaction under excitation of a sodium silicate exciting agent to form a porous matrix, the through hole rate and the specific surface area of the material are improved by applying the saponification reaction characteristic of animal and vegetable oil, a self-degradable material is embedded in the porous matrix, and the self-degradable material is degraded along with time and releases internal active substances. The preparation method of the porous permeable geopolymer material comprises the following steps: taking a geopolymer prepared from a high-activity silicon-aluminum natural mineral or solid waste or a mixture of the high-activity silicon-aluminum natural mineral and the solid waste as a raw material under the action of an exciting agent as a matrix material, adding a pore-forming agent to form pores in the matrix, embedding the self-degradable particles, and conducting curing to obtain the porous permeable geopolymer material. The problems that in the prior art, an underground water permeable reactive barrier needs to be constructed in a filling mode, reactive barrier engineering is complex, and the construction period is long, so that the early-stage investment is large, and the defect that the permeability coefficient of a conventional permeable reactive barrier is gradually reduced along with the increase of the service life is overcome.

Description

Technical field [0001] The present disclosure relates to the field of groundwater pollution repair, and specific relates to a porous permeable gemmial material and a preparation method thereof. Background technique [0002] The statements here only provide background information related to the present disclosure, and it is not necessarily constituting prior art. [0003] The sewage of the mine is accompanied by sewage generated by the development of mines, including the mining layer of the mining area, sewage generated in the vicinity of the roadway and the gangue mountain leachate accompanying the water-containing layer. Sewage diffusion of mining area will cause serious pollution to the environment. Therefore, it is effective for the sewage of mineral area, which prevents water loss and avoids pollution to the water environment, and can alleviate the lack of water supply in the mine. [0004] The sewage treatment method of traditional mining area is to discharge the sewage of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/02C02F1/00C02F1/28C04B111/40
CPCC04B28/006C04B38/02C02F1/001C02F1/288C02F1/281C04B2111/00284C04B2111/40C04B2201/20C04B2201/50C04B2111/00793C04B18/08C04B14/106C04B18/146C04B22/00C04B24/285C04B2103/0068Y02P40/10
Inventor 张霄张旭豪田冬马明辉王天奇马超群李珍
Owner SHANDONG UNIV
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