Phosphorylation ultra-fast straw fiber adsorption material and preparation method and application thereof
A technology of adsorption material and straw fiber, which is applied in the field of phosphonated ultrafast straw fiber adsorption material and its preparation, can solve the problems of small specific surface area and pore volume, low adsorption efficiency, etc., achieve high adsorption efficiency, increase adsorption capacity, The effect of increasing the pore volume
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Embodiment 1
[0036] Crush the straw, pass it through a 60-mesh sieve, wash it with water three times, and dry it at 60°C to constant weight; mix it with phosphorous acid and paraformaldehyde at a mass ratio of 1:5:5, and add it to the concentration at 80°C Heating and reacting in 25% hydrochloric acid solution for 5 hours; washing with water to neutrality, drying at 60°C to constant weight, and obtaining phosphonated ultrafast straw fiber adsorption material.
Embodiment 2
[0038] The sulfapyridine (SPY), sulfamethoxazole (SMM) and sulfamethoxazole (SMZ) that concentration is 2mg / l join respectively in the glass bottle of 10ml, and add respectively the phosphonated supermethoxazole that embodiment 1 makes Fast-type straw fiber adsorption material was used for adsorption, and three groups of parallel samples were made, the adsorption temperature was 25±2°C, and the adsorption oscillation time was 72h.
[0039] The scanning electron microscope image of the unmodified corn stalk raw material is shown in figure 1 ; The scanning electron microscope image of phosphonated ultrafast straw fiber adsorption material is shown in figure 2 ; The scanning electron microscope image of the phosphonated ultrafast straw fiber adsorption material after SPY is adsorbed is shown in image 3 ; The scanning electron microscope image of the phosphonated ultrafast straw fiber adsorption material after SMM is adsorbed is shown in Figure 4 ; The scanning electron micro...
Embodiment 3
[0042] Effect of adsorption time on adsorption effect
[0043]Add 0.05 g of phosphonated ultrafast straw fiber adsorption material into conical flasks, 2 for each group, 3 groups in total. Add 10mL of 2mg / L SPY, SMM and SMZ to each Erlenmeyer flask respectively, seal the flask and put it into a full-temperature shaking shaker at 25°C and 180r / min. After 24h, 48h, 72h, and 96h, respectively, one group was taken out, all passed through the membrane, and put into liquid phase vials, and detected by high performance liquid chromatography. For details, see Image 6 .
[0044] The results showed that the adsorption rate of SPY showed an upward trend with the increase of time before 72h, and then declined, so the optimal adsorption time of SPY was 72h, and the adsorption rate could reach 91.90% at this time; the optimal adsorption time of SMZ was 48h, its adsorption rate is 93.96%; the optimal adsorption time of SMM is also 48h, its adsorption rate is 88.61%.
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