A kind of preparation method of bacterial cellulose LDH composite adsorption material
A technology of composite adsorption material and bacterial cellulose, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problem of single adsorption method of bacterial cellulose
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[0034] Example 1: 5 g of bacterial cellulose powder (Hainan Yide Food Co., Ltd.) was added to 100 ml of deionized water, and stirred to disperse to obtain a bacterial cellulose dispersion. 2.5 g of aluminum nitrate and 5 g of magnesium nitrate were added to the bacterial cellulose dispersion and stirred to dissolve the aluminum nitrate and the magnesium nitrate to obtain a co-precipitation system. Mix 5 ml of the prepared 0.2 mol / L sodium hydroxide solution with 10 ml of the 0.5 mol / L sodium carbonate solution to obtain 15 ml of coprecipitating agent. The co-precipitation agent was added dropwise to the co-precipitation system which was continuously stirred, and then heated at 70°C for 8 hours. The obtained solid product (precipitation, namely the adsorption matrix material) was washed to neutrality by suction filtration, and 100 g of deionized water was added to obtain a mixed solution. suspension. After the temperature of the mixed suspension was heated to 80°C, 0.1 g of p-...
experiment example
[0048] (1) Preparation of Cu(II) standard curve
[0049] Weigh 1.0g of anhydrous copper sulfate standard sample with a balance, put the weighed solid into a 200ml beaker, add 100ml of ethanol solution dropwise, stir, and heat the beaker to 60°C to ensure that the solid sample is completely dissolved. Return to room temperature, transfer it to a 1000ml volumetric flask, and make up to volume. Take 1.0 ml of the Cu(II) standard solution with a concentration of 10 μg / ml prepared above, transfer it to a 50 ml volumetric flask, add 4.0 ml of aqueous ammonia solution (aqueous ammonia: water = 1:1), 2.0 ml of citric acid (0.5 g / ml); 10.0 ml of bicyclohexanone oxalate dibrown solution (0.1%), make up to volume. Take 1.2ml, 1.4ml, 1.6ml and 2.0ml of standard solution and prepare according to the above method. Select a 1ml cuvette at 610nm and use a blank sample as a reference solution. After preheating for 10min, use a UV-spectrophotometer to measure the absorbance. The Cu(II) stand...
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