Heavy metal ionic liquid chunk liquid film separating and recycling method
A technology of ionic liquid and recovery method, applied in chemical instruments and methods, improvement of process efficiency, water/sludge/sewage treatment, etc., can solve the problems of low mobility, difficult recycling of organic solvents, complicated operation, etc. Good separation effect, high separation efficiency, simple ingredients and simple operation
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Embodiment 1
[0035] Embodiment 1: implement according to the following steps and relevant control parameters,
[0036] Step 1, select the ionic liquid [BMIM]PF with a purity of 98% 6 As a membrane solvent, P with a purity of 98% was chosen 507 As a carrier, the carrier and the ionic liquid are mixed according to a volume ratio of 0.5:99.5 to obtain a membrane solution, that is, a liquid membrane phase.
[0037] Step 2. Select 2.0mol / L HNO 3 as analytical phase 2;
[0038] Step 3, mix acetic acid and sodium acetate according to the volume ratio of 65:35 to obtain a buffer solution, and then mix the buffer solution with a concentration of 2.3×10 -3 mol / L PbSO to be recovered 4 The solution is mixed at a volume ratio of 90:10 to obtain material liquid phase 3;
[0039] Step 4. Add the liquid film phase 4 into the glass container 7, make the liquid surface overflow the edge of the lower opening of the glass tube 1, add the material liquid phase 3 into the glass container 7, and add the an...
Embodiment 2
[0041] Embodiment 2: choose the ionic liquid [BEIM]PF that purity is 98% 6 As a membrane solvent, P with a purity of 98% was chosen 507 As a carrier, the carrier and the ionic liquid are mixed according to the volume ratio of 0.3:99.7 to obtain the liquid film phase 4; 0.5mol / L HNO 3 As analytical phase 2; acetic acid and sodium acetate are mixed according to a volume ratio of 90:10 to obtain a buffer solution, and then the buffer solution is mixed with a concentration of 2.4×10 -3 mol / L of Cd(NO 3 ) 2 The solution is mixed according to the volume ratio of 88:12 to obtain the material liquid phase 3; the liquid film phase 4 is added to the glass container 7, the liquid level is overflowed over the lower opening edge of the glass tube 1, and the material liquid phase 3 is added to the glass container 7 At the same time, the analytical phase 2 is added to the glass tube 1, and the magnetic stirrer 6 is turned on to stir the liquid film phase 4 at a speed of 500 ± 50 rpm, so t...
Embodiment 3
[0042] Embodiment 3: choose the ionic liquid [BMIM]PF that purity is 98% 6 As a membrane solvent, P with a purity of 98% was chosen 507 As a carrier, the carrier and the ionic liquid are mixed according to the volume ratio of 1:99 to obtain the liquid film phase 4; 1.0mol / L H 2 SO 4 As analytical phase 2; acetic acid and sodium acetate are mixed according to a volume ratio of 15:85 to obtain a buffer solution, and then the buffer solution is mixed with a concentration of 2.5×10 -3 mol / L CuSO to be recovered 4 The solution is mixed according to the volume ratio of 93:7 to obtain the material liquid phase 3; the liquid film phase 4 is added to the glass container 7, so that the liquid level overflows the lower opening edge of the glass tube 1, and the material liquid phase 3 is added to the glass container 7 At the same time, add the analytical phase 2 into the glass tube 1, turn on the magnetic stirrer 6 to stir the liquid film phase 4 at a speed of 500±50 rpm, so that the h...
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