Carrier for efficiently removing triclosan in sewage under wide pH range and preparation method thereof
A triclosan, high-efficiency technology, applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve problems such as practical operation difficulties, unsuitable for promotion and use, and a large number of penicillium, and achieve efficient removal Ability, good application prospects, and the effect of simple use
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Embodiment 1
[0024] (1) Air-dry the pig feces, control the water content to 8% of the total weight, and obtain raw material A; wash and dry the shrimp and crab shells, and obtain raw material B;
[0025] (2) Mix raw material A and raw material B according to the weight ratio of 5.5:1, and grind until the particle size is 0.7-0.8 mm;
[0026] (3) The product obtained in step (2) is placed in a carbonization furnace, protected by nitrogen gas, and carbonized at a high temperature of 600° C. for 1.5 hours to obtain a carrier for efficiently removing triclosan in sewage under a wide range of pH.
[0027] Prepare triclosan concentration and be 25mg / L water body, be divided into 12 experimental groups, adjust the pH of the water body of each experimental group to be 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12 respectively, Add the obtained carrier to each experimental group, shake at room temperature at 100 rpm / min for 4-18 hours, and measure the remaining concentration of the adsorbate after filterin...
Embodiment 2
[0032] Except that the weight ratio of raw material A and raw material B is 3:1, the carbonization temperature is 500°C, the carbonization time is 3 hours, and the particle size of the mixture of raw material A and raw material B is 0.8-1.0 mm, the rest is consistent with Example 1.
[0033] Experimental results:
[0034] After shaking at 100rpm / min at room temperature for 4 hours, the clearance rates of triclosan by the carrier at different pH were 98.0% (pH=2), 98.2% (pH=3), 98.6% (pH=4), 98.1% (pH=5), 98.2% (pH=6), 99.0% (pH=7), 98.0% (pH=8), 98.0% (pH=9), 98.1% (pH=10), 98.0% (pH=11) and 98.1% (pH=12).
[0035] After shaking at 100rpm / min at room temperature for 10 hours, the adsorption of triclosan reached equilibrium, and the maximum adsorption capacity of triclosan under different pH conditions was 730mg / g (pH=2), 739mg / g (pH =3), 752mg / g (pH=4), 732mg / g (pH=5), 738mg / g (pH=6), 771mg / g (pH=7), 733mg / g (pH=8), 730mg / g (pH=9), 732 mg / g (pH=10), 731 mg / g (pH=11) and 73...
Embodiment 3
[0037] Except that the weight ratio of raw materials A and raw materials B is 8:1, the carbonization temperature is 700°C, the carbonization time is 0.5 hours, and the particle size of the mixture of raw materials A and raw materials B is 0.5-0.6 mm, the rest is consistent with Example 1.
[0038] Experimental results:
[0039] After shaking at 100rpm / min at room temperature for 4 hours, the clearance rates of triclosan by the carriers at different pH levels were 98.0% (pH=2), 98.1% (pH=3), 98.7% (pH=4), 98.0% (pH=5), 98.1% (pH=6), 98.9% (pH=7), 98.0% (pH=8), 98.1% (pH=9), 98.0% (pH=10), 98.0% (pH=11) and 98.2% (pH=12).
[0040]After shaking at 100rpm / min at room temperature for 10 hours, the adsorption of triclosan reached equilibrium, and the maximum adsorption capacity of triclosan under different pH conditions was 730mg / g (pH=2), 738mg / g (pH =3), 751mg / g (pH=4), 730mg / g (pH=5), 736mg / g (pH=6), 772mg / g (pH=7), 730mg / g (pH=8), 731mg / g (pH=9), 733 mg / g (pH=10), 733 mg / g (...
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