Novel method for directly determining oil quantity in adsorbed water of oil suction material
An oil-absorbing material and water-absorbing technology, which is applied in the field of directly measuring the amount of oil in water absorbed by the oil-absorbing material and the oil-absorbing amount of the oil-absorbing material, can solve the problems of low water content, large deviation, and error, and achieve high accuracy, small relative error, and weight good effect
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Embodiment 1
[0027] A), Weigh 1.0000g of melt-blown polypropylene fiber oil-absorbing material, soak it in deionized water for 10min, after taking it out, add about 0.2000, 0.3000, 0.4000g of normal-pressure diesel oil on its surface dropwise, and obtain the oil and water absorbed oil absorbing material;
[0028] B), the oil-absorbing material that has adsorbed oil and water in step A) is placed in Soxhlet extractor (see image 3 ) in the extraction tube, use 150mLCCl 4 As an extraction solvent, start timing when the first drop of condensed liquid drops from the condenser at the upper end of the extraction tube, control the drop rate of the condensed liquid to 2 drops per second, take out the extract after 3 hours of extraction, and pass through 10g of anhydrous sodium sulfate. Dehydration bed, remove the water therein, use CCl 4 Dilute the extract to 200mL, use infrared spectrophotometry to obtain the oil concentration C (mg / L) of the extract, calculate the oil absorption of the oil-abs...
Embodiment 2
[0030]A) Weigh 1.0000g of the melt-blown polypropylene fiber oil-absorbing material, soak it in water for 10 minutes, and drop about 0.2000, 0.3000, 0.4000g of coked diesel oil on its surface after taking it out to obtain the oil-absorbing material that has absorbed oil and water;
[0031] B), the oil-absorbing material that has absorbed oil and water obtained in step A) is placed in the extraction tube of the Soxhlet extractor, and then the remaining steps are the same as in step B) of Example 1, and the results of five parallel experiments are shown in Table 2 shown.
Embodiment 3
[0033] A), take by weighing about 1.0000g of melt-blown polypropylene fiber oil-absorbing material, place it in water oil adsorption device (such as figure 2 ), the volume of water containing oil (including atmospheric diesel oil and coked diesel oil) is 200mL, the pre-prepared initial concentration is 1000, 1500, 2000, 2500, 3000mg / L, and it is taken out after 60 minutes of adsorption, and the adsorbed oil and water are saturated oil absorbing material;
[0034] B) Put the oil-absorbed and water-saturated oil-absorbing material obtained in step A) into the extraction tube of the Soxhlet extractor, and then the rest of the steps are the same as step B) of Example 1. In addition, the oily water after adsorption is fully analyzed. All were five parallel experiments, and the comparison of the obtained results is shown in Table 3.
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