Sepiolite-supported nanoscale zero-valent iron material and preparation process and application thereof
A nano-zero-valent iron and preparation technology, applied in other chemical processes, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve cumbersome, time-consuming and other problems, and achieve increased reaction rate and short time-consuming , a high degree of mixing effect
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Embodiment 1
[0034] The preparation method of sepiolite loaded nanometer zero-valent iron material is carried out according to the following steps:
[0035] Step 1: At room temperature, fully mix sepiolite powder with an average particle size of 325 mesh and hydrochloric acid solution with a mass concentration of 15% at a solid-to-liquid mass ratio of 1:5 and continue to stir. After the bubbles come out completely, add glass Balls were heated to boiling with a microwave oven with a power of 800W and kept for 5 minutes, and then heated and reacted with a microwave oven with a power of 150W for 15 minutes, and then washed, dried, roasted and crushed to obtain modified sepiolite; wherein, the drying temperature was 105 ℃, the drying time is 12h; the calcination temperature is 320℃, and the calcination time is 4h.
[0036] In the second step, the above-mentioned modified sepiolite is formulated into a suspension, wherein the mass volume ratio of modified sepiolite powder to deionized water is ...
Embodiment 2
[0041] The preparation method of sepiolite loaded nanometer zero-valent iron material is carried out according to the following steps:
[0042] Step 1: At room temperature, mix sepiolite powder with an average particle size of 100 mesh and hydrochloric acid solution with a mass concentration of 10% at a solid-to-liquid mass ratio of 1:5 and continue to stir. After the bubbles come out completely, add glass Balls were heated to boiling with a microwave oven with a power of 600W and kept for 3 minutes, and then heated and reacted with a microwave oven with a power of 200W for 10 minutes, and then washed, dried, roasted and crushed to obtain modified sepiolite; wherein, the drying temperature was 110 ℃, the drying time is 12h; the calcination temperature is 300℃, and the calcination time is 5h.
[0043] In the second step, the above-mentioned modified sepiolite is formulated into a suspension, wherein the mass volume ratio of modified sepiolite powder to deionized water is 1:30; ...
Embodiment 3
[0048] The preparation method of sepiolite loaded nanometer zero-valent iron material is carried out according to the following steps:
[0049] Step 1: At room temperature, thoroughly mix sepiolite powder with an average particle size of 150 mesh and hydrochloric acid solution with a mass concentration of 11% at a solid-to-liquid mass ratio of 1.5:5 and continue stirring. After the bubbles come out completely, add glass Balls were heated to boiling with a microwave oven with a power of 700W and kept for 4 minutes, and then heated and reacted with a microwave oven with a power of 180W for 12 minutes, and then washed, dried, roasted and crushed to obtain modified sepiolite; wherein, the drying temperature was 108 ℃, the drying time is 16min; the calcination temperature is 310℃, and the calcination time is 4.5h.
[0050] In the second step, the above-mentioned modified sepiolite is formulated into a suspension, wherein the mass volume ratio of modified sepiolite powder to deioniz...
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