Preparation method of activated carbon adsorbent for regenerating and adsorbing methyl orange

Abstract

The invention discloses a preparation method of an activated carbon adsorbent for regenerating and adsorbing methyl orange, which comprises the following steps of crushing an activated carbon raw material into particles with the particle size of 1.2-3 cm, soaking in an acid solution for 6-10 hours, then fishing out, washing with distilled water to be neutral, drying, soaking in an alkaline solution for 8-15 hours, then fishing out, washing with distilled water to be neutral, and drying, adding copper sulfate and ferrous sulfate into distilled water, then adding the activated carbon raw material in the step S1 into the solution, adding graphene oxide, transferring into a high-pressure reaction kettle, and carrying out high-temperature reaction, cooling, filtering and drying, putting an activated carbon raw material into a tubular furnace, introducing mixed gas, calcining for 4-8 hours, and cooling to obtain an activated carbon precursor, adding a surfactant into distilled water, then adding an activated carbon precursor, stirring, filtering, drying, then adding the dried activated carbon into a dopamine aqueous solution, adding into a 6-15% tris-HCl buffer solution, stirring for 6-12 hours, filtering, and drying to obtain the activated carbon.

Description

technical field [0001] The invention belongs to the technical field of organic dye adsorbents, and in particular relates to a preparation method of an activated carbon adsorbent that regenerates and adsorbs methyl orange. Background technique [0002] Nowadays, with the rapid development of the times, while various industries are pursuing economic benefits, they are also paying more and more attention to the treatment of wastewater. A large number of organic pollutants discharged by textile, pharmaceutical, paper and other enterprises have a great impact on the water quality of our country, which in turn poses a threat to human life. Among the sewage treatment methods, the adsorption method is a more effective and convenient treatment method. Most of the traditional adsorbents use activated carbon materials for water adsorption, because activated carbon has a porous structure and a high specific surface area. It is an excellent adsorption material and has a wide range of ap...

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Problems solved by technology

[0004] Aiming at the defect that activated carbon in the prior art can only perform one adsorption when adsorbing the organic dye methyl orange, cannot regenerate methyl orange or have poor regenerative adsorption methyl orange performance, the purpose of the present invention is to provide a regenerative adsorption The preparation method of the active carbon adsorbent of methyl orange, its preparation method comprises the following steps:

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