Fe and Ti-loaded expanded perlite, preparation method and application of Fe and Ti-loaded expanded perlite
A technology of expanded perlite and loading capacity, which is applied in the field of environmental restoration, can solve the problems of inability to separate adsorbed materials from soil, inability to treat organically polluted soil, and difficulty in bioremediation, and achieve easy recycling and reuse, novel and unique catalyst structure, The effect of improving the photocatalytic ability
Inactive Publication Date: 2015-05-27
YANGZHOU UNIV
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Problems solved by technology
Phytoremediation has the disadvantage of a long period; and because organic pollutants often contain alkanes, aromatic hydrocarbons and organic acids, the proportion of high-carbon chains and aromatic substances is high, and it is difficult to degrade. In the soil, organic pollutants are adsorbed by soil particles , its diffusion is limited, so simple bioremediation is also very difficult
[0005] Although great progress has been made in the use of remediation materials to treat organic sewage, it is still not possible to use this method to treat organically polluted soils due to the inability to separate the adsorbent materials from the soil well.
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[0029] 1. Preparation of expanded perlite loaded with Fe and Ti:
[0030] 1. Preparation of sol:
[0031] Take 80ml absolute ethanol, 5-10ml Fe(NO 3 ) 3 The solution and 10ml of glacial acetic acid were poured into a separatory funnel, and another 80ml of absolute ethanol, 34-40ml of tetrabutyl titanate and 10ml of glacial acetic acid were poured into a beaker, and stirred with a magnetic stirrer at room temperature. Open the plunger of the separating funnel, drop the mixed solution into the beaker at a speed of 2-4d / s, and stir for 2 hours to obtain a stable and uniform transparent sol.
[0032] According to the above process, the mixing amount in the following table was used to prepare sols with different FeTi ratios: (unit: ml)
[0033]
[0034] 2. Load process:
[0035] Put the 8-20 mesh expanded perlite particles obtained after washing, air-drying and sieving into an open container, add the sol respectively, and stir magnetically for 1 hour. Then dry the perlite i...
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Abstract
The invention discloses Fe and Ti-loaded expanded perlite, a preparation method and application of Fe and Ti-loaded expanded perlite, belonging to the technical field of environmental modification. The method comprises the following steps: mixing absolute ethyl alcohol, tetrabutyl titanate, Fe(NO3)3.9H2o solution and glacial acetic acid to form sol; mixing expanded perlite with the particle sizes of 8-20 meshes with the sol under magnetic stirring; and baking and roasting to obtain the expanded perlite, wherein the TiO2 loading capacity of the expanded perlite is 8-20% and the Fe loading capacity of the expanded perlite is 0.03-0.5 per mill. The Fe and Ti-loaded expanded perlite can be applied to degradation of organic dyes in water and soil as an environmental rehabilitation material; organic pollutants in water can be efficiently removed; the catalyst is novel and unique in structure, and high in stability; and the product also has the characteristics of being light and porous, can float on the water level, and is beneficial to separating and recycling after treatment.
Description
technical field [0001] The invention belongs to the technical field of environmental restoration, and in particular relates to the treatment technology for organic pollutants in water bodies and soils. Background technique [0002] The problem of organic pollution of water and soil caused by chemical industry and chemical agriculture is becoming more and more serious. There are also serious organic pollution in the relocation sites of some chemical factories and pesticide factories, as well as in the water and soil around oil mines. Therefore, how to remove pollutants from pollution Removal from the environment has become an urgent scientific problem to be solved. At present, the removal of organic matter in water by adsorption is considered to be the most effective means. Granular activated carbon, adsorption resin, clay minerals, etc. have all been applied to the removal of organic pollutants in water bodies. [0003] At present, there are three main methods for the trea...
Claims
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IPC IPC(8): B01J23/745B01J20/10B01J20/30C09K17/08B09C1/08B09C1/00C02F1/28C02F1/30
CPCY02W10/37
Inventor 王小治薛红波徐荣尹微琴封克
Owner YANGZHOU UNIV