A kind of magnetic microalgae biological adsorption flocculant and method for adsorbing chromium in waste water
A technology of microalgae and flocculant, applied in biological water/sewage treatment, chemical instruments and methods, water pollutants, etc., can solve the problems of difficult separation, inability to metabolize heavy metals, etc., and achieve large adsorption capacity and good removal effect. , the effect of fast adsorption rate
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Embodiment 1
[0029] A magnetic microalgae biosorption flocculant, including chlorella, magnetic Fe 3 o 4 Nanoparticles, konjac glucomannan and modified carbon fibers. The mass ratio of the modified carbon fiber to konjac glucomannan is 1:7. Its preparation method comprises the following steps:
[0030] (1) Microalgae were inoculated in BG11 medium, and the temperature was 25°C, the shaking frequency was 160rpm, and the light condition was 100μmolm. -2 the s -1 Under the condition of culturing to a concentration of 6.5×10 7 a / mL;
[0031] (2) Add magnetic Fe to the medium 3 o 4 Nanoparticles, add 0.2g magnetic Fe per liter of algae liquid 3 o 4 Nanoparticles, shaken at constant temperature for 3 days to obtain microalgae and magnetic Fe 3 o 4 a polymer solution of nanoparticles;
[0032] (3) Add konjac glucomannan and modified carbon fiber to the polymer solution and mix evenly to obtain a mixed solution. The concentration of konjac glucomannan in the mixed solution is 2.5wt%; ...
Embodiment 2
[0040] A magnetic microalgae biosorption flocculant, including Scenedesmus, magnetic Fe 3 o 4 Nanoparticles, konjac glucomannan and modified carbon fibers. The mass ratio of the modified carbon fiber to konjac glucomannan is 1:6. Its preparation method comprises the following steps:
[0041] (1) Microalgae were inoculated in BG11 medium, and the temperature was 30°C, the shaking frequency was 220rpm, and the light condition was 150μmolm. -2 the s -1 Under the condition of culturing to a concentration of 8×10 7 a / mL;
[0042] (2) Add magnetic Fe to the medium 3 o 4 Nanoparticles, add 0.3g magnetic Fe per liter of algae liquid 3 o 4 Nanoparticles, shaken at constant temperature for 4 days to obtain microalgae and magnetic Fe 3 o 4 a polymer solution of nanoparticles;
[0043] (3) Add konjac glucomannan and modified carbon fiber to the polymer solution and mix evenly to obtain a mixed solution. The concentration of konjac glucomannan in the mixed solution is 3wt%; th...
Embodiment 3
[0051] A magnetic microalgae biosorption flocculant, including botrytis, magnetic Fe 3 o 4 Nanoparticles, konjac glucomannan and modified carbon fibers. The mass ratio of the modified carbon fiber to konjac glucomannan is 1:8. Its preparation method comprises the following steps:
[0052] (1) Microalgae were inoculated in BG11 medium, and the temperature was 20°C, the shaking frequency was 100rpm, and the light condition was 50μmolm. -2 the s -1 Under the condition of culturing to a concentration of 5×10 7 a / mL;
[0053] (2) Add magnetic Fe to the medium 3 o 4 Nanoparticles, add 0.1g magnetic Fe per liter of algae liquid 3 o 4 Nanoparticles, shake at constant temperature for 2 days, get microalgae and magnetic Fe 3 o 4 a polymer solution of nanoparticles;
[0054] (3) Add konjac glucomannan and modified carbon fiber to the polymer solution and mix evenly to obtain a mixed solution. The concentration of konjac glucomannan in the mixed solution is 2wt%; the mixed so...
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