Carbonized straw/diatomite molecular sieve demanganization adsorbent doped with modified humic acid
A technology of carbonizing straw and humic acid, which is applied in the direction of adsorption water/sewage treatment, other chemical processes, water/sewage treatment, etc. It can solve the problem that the pH of drinking water is not up to standard, it is not suitable for large-scale use, and the removal effect is greatly affected. problems, to achieve fast adsorption process, improve selective adsorption, and reduce production costs
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[0013] The adsorbent in this example is made from the following raw materials in parts by weight: straw 12, diatomaceous earth 55, manganese sulfate 5, potassium permanganate 2.5, sodium sulfite 0.1, humic acid 4, sulfuric acid solution, sodium hydroxide 55, Sodium polystyrene sulfonate 2.5, appropriate amount of deionized water.
[0014] The preparation method is:
[0015] (1) The straw is cleaned, dehydrated, dried and pulverized, and the treated material is carbonized at 350°C to obtain carbonized straw powder for later use;
[0016] (2) Roast the diatomite at 550°C for 2.5h, take it out and cool it, then put it into a sulfuric acid solution with a concentration of 2mol / L, mix and react at 80-90°C for 6h, after the reaction is completed, filter, wash with water, Dry to obtain purified diatomaceous earth powder for subsequent use;
[0017] (3) Dissolve potassium permanganate in deionized water and prepare a solution with a concentration of 10% for later use; dissolve manga...
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