The invention relates to the technical field of
water treatment, in particular to a preparation method of a 3D printing
activated carbon rod based on
coffee grounds, a product and water purification and adsorption application of the 3D printing
activated carbon rod based on the
coffee grounds, and the preparation method comprises the steps that 1, the
coffee grounds are collected, washed, dried to constant weight, smashed and sieved, and coffee grounds
fine powder is obtained; step 2, mixing
sodium carboxymethyl cellulose with
polylactic acid to prepare a binder, then adding deionized water into the binder, stirring until the deionized water is completely dissolved, and cooling to
room temperature to form a binder solution; step 3, uniformly mixing the coffee residue
fine powder, the binder solution, a pore forming agent and a reinforcing agent to prepare a 3D printing material; wherein the pore forming agent is a mixture of
sodium bicarbonate and
starch, and the reinforcing agent is
nano silicon dioxide; 4, the 3D printing material is formed through a 3D printing technology, a carbon rod precursor is prepared, and then the carbon rod precursor is dried and cured; the adsorbent has high-efficiency adsorption performance and good
structural stability, and meets actual application requirements.