Preparation method of biomass carbon adsorption material
A technology of adsorption material and biochar, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problems of poor removal effect of heavy metal ions and low adsorption capacity, and achieve poor removal effect, Effect of improving adsorption capacity and improving adsorption performance
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[0019] The choice of plant straw is any one of corn straw, wheat straw, soybean straw and reed straw.
[0020] The additive is prepared by mixing dodecyltrimethylammonium bromide and ammonium acetate at a mass ratio of 7:1.
[0021] The choice of surfactant is any one of sodium dodecylbenzenesulfonate and hexadecyldimethylamine oxide.
[0022] A preparation method of a biochar adsorption material, the preparation method comprising the steps of:
[0023] (1) Take the plant straw and squeeze it at 4MPa for 20 minutes, crush it, pass it through a 100-mesh sieve, mix the sieved particles with the ammonium bicarbonate solution at a mass ratio of 1:4~7, put it into the reaction kettle, and use hydrogen to add Press down to 2~4MPa, heat up to 300~400℃, stir for 50~70min;
[0024] (2) After the stirring is completed, discharge, filter, and collect the filter residue, in parts by weight, take 100-110 parts of water, 40-50 parts of filter residue, 19-22 parts of sodium silicate, 11-13...
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