Cadmium pollution repairing agent
A remediation agent, cadmium pollution technology, applied in the restoration of polluted soil, water pollutants, adsorbed water/sewage treatment and other directions, to achieve the effect of improving removal speed, realizing resource utilization, and repairing cadmium pollution
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Embodiment 1
[0032] (1) Tobacco leaf treatment: After the tobacco leaves that have been washed out of impurities are naturally dried, they are dried at 50°C and crushed through a 200-mesh sieve;
[0033] (2) Preparation of tobacco leaf extract: Weigh 1.0 g of the tobacco leaf powder obtained in the above step (1) in a 250 mL conical flask, add 25 mL of 50% ethanol solution (volume ratio) for ultrasonic extraction for 30 min, and after centrifugation, clear the liquid by rotating Concentrate to 10mL with an evaporator below 38°C;
[0034] (3) Adsorption of ferrous salt by woody peat: Weigh 0.050g of woody peat into a 100mL beaker, add 3.0mL16.5g L -1 FeSO 4 ·7H 2 O solution, placed in a 25°C water bath at 200r·min -1 Stirring at 30min at 3000r·min -1 Centrifuge at a rotating speed for 10 minutes to obtain woody peat adsorbed with ferrous salts;
[0035] (4) Preparation of nano-iron: under continuous stirring or shaking conditions, add the tobacco leaf extract obtained in step (2) to the ...
Embodiment 2
[0037] Tobacco leaf treatment, preparation of tobacco leaf extract, woody peat adsorption of ferrous salt and preparation of nano-iron are the same as in Example 1, except that the weight of woody peat in step (3) is 0.020 g.
Embodiment 3
[0039] Tobacco leaf treatment, preparation of tobacco leaf extract, woody peat adsorption of ferrous salt and preparation of nano-iron are the same as in Example 1, except that the weight of woody peat in step (3) is 0.100 g.
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