Method for adsorbing chrome azurol S through magnetic pomelo peel
A technology of chrome azure and grapefruit peel is applied in the field of industrial sewage treatment to achieve the effects of less environmental pollution, good regeneration performance and convenient desorption
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Embodiment 1
[0013] Example 1 (1) Collect pomelo spongy inner skin, wash, cut into pieces, and use 2% H 2 SO 4 Soak for 24 hours, drain and spread the pomelo peel on a tray, keep it dry in an electric blast drying oven at 60°C for 40 hours, take it out and grind it with an agate mortar to obtain product 1; weigh 4.0g FeCl 3 ·6H 2 O, 2.0g FeCl 2 4H 2 O. 1.5 g of product 1 was placed in a three-necked flask, and 80 mL of deionized water was added to magnetically stir for 40 min, and 20 mL of ammonia water was measured in a graduated cylinder. Use a constant pressure dropping funnel to add dropwise and nitrogen gas, heat in a water bath at 60°C for 70 min, magnetically separate the product, wash, dry in vacuum at 60°C, and grind in an agate mortar to obtain magnetic pomelo peel;
[0014] (2) Pipette 1.00 mL of 10 mg / mL chromazurin S into a 100 mL Erlenmeyer flask, add 20.00 mL of deionized water, 0.1000 g of magnetic grapefruit peel, add acid to adjust the pH of the solution to 3.0, and ...
Embodiment 2
[0015] Example 2 (1) Collect the spongy inner skin of pomelo, wash, cut into pieces, and use 3% H 2 SO 4 Soak for 24 hours, drain and spread the pomelo peel on a tray, keep it dry in an electric blast drying oven at 70°C for 44 hours, take it out and grind it with an agate mortar to obtain product 1; weigh 4.0g FeCl 3 ·6H 2 O, 2.0g FeCl 2 4H 2 O. Put 2.0 g of product 1 in a three-necked flask, add 80 mL of deionized water and magnetically stir for 50 min, and measure 25 mL of ammonia water with a graduated cylinder. Use a constant pressure dropping funnel to add dropwise and nitrogen gas, heat in a water bath at 60°C for 70 min, magnetically separate the product, wash, dry in vacuum at 60°C, and grind in an agate mortar to obtain magnetic pomelo peel;
[0016] (2) Pipette 2.00 mL of 10 mg / mL chromazurin S into a 100 mL Erlenmeyer flask, add 20.00 mL of deionized water, 0.1000 g of magnetic grapefruit peel, add acid to adjust the pH of the solution to 2.0, and keep After ...
Embodiment 3
[0017] Example 3 (1) Collect the spongy inner skin of pomelo, wash, cut into pieces, and use 4% H 2 SO 4 Soak for 24 hours, drain and spread the pomelo peel on a tray, keep it dry in an electric blast drying oven at 60-80°C for 48 hours, take it out and grind it with an agate mortar to obtain product 1; weigh 4.0g FeCl 3 ·6H 2 O, 2.0g FeCl 2 4H 2 O. 3.0 g of product 1 was placed in a three-necked flask, and 80 mL of deionized water was added to magnetically stir for 60 min, and 30 mL of ammonia water was measured by a graduated cylinder. Use a constant pressure dropping funnel to add dropwise and nitrogen gas, heat in a water bath at 60°C for 70 min, magnetically separate the product, wash, dry in vacuum at 60°C, and grind in an agate mortar to obtain magnetic pomelo peel;
[0018] (2) Pipette 4.00 mL of 10 mg / mL chromazurin S into a 100 mL Erlenmeyer flask, add 20.00 mL of deionized water, 0.1000 g of magnetic grapefruit peel, add acid to adjust the pH of the solution to...
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