Free-Standing Activated Carbon Made from Melamine- Impregnated Paper

Abstract Aiming at the high value-added utilization of waste scraps of Melamine impregnated paper, also known as “melamine” paper, is a plain base paper or printing decorative paper impregnated with amino resin (melamine formaldehyde resin and urea formaldehyde resin) and dried to a certain extent, with a certain resin content and volatile content of the adhesive paper, after hot pressing can be bonded with each other or with artificial board substrate., this study adopts high temperature pyrolysis method to carbonize the waste impregnated paper to prepare melamine impregnated paper-based activated carbon. The effects of different carbonization temperatures and NaOH/C on the properties of activated carbon materials were studied. When the carbonization temperature is 400℃ and the ratio of alkali to carbon is 2:1, the highest removal rate of methylene blue (MB) by activated carbon is 99.45%, and the specific surface area reaches 608.548 m2/g. Langmuir isotherm, Freundlich isotherm models were used to fit the experimental dye adsorption data, with the Langmuir providing the best fit. This activated carbon adsorbent based on melamine impregnated paper is shown to be highly promising for water decontamination applications.