background and objectives: activated carbon is an adsorbent which is mostly employed in order to remove dye from aqueous solutions; however, commercial activated carbon is expensive and this is considered as an obstacle for its usage. therefore, the present study aimed to use waste paper as an inexpensive precursor to produce activated carbon. materials and methods: in the present study, koh wa...

Activated carbon was prepared from waste melamine-impregnated paper (MIP) by pyrolysis with activation NaOH. The adsorption parameters such as carbonization temperature (300, 350, 400, 450 °C), NaOH to C ratio (2:1, 3:1, 4:1, 5:1), and initial methylene blue (MB) dye concentration (20 600 mg/L) were studied. results fit the Langmuir isotherm model pseudo-second order kinetics. It found that act...

Abstract The cleaning of particles from smooth and rough paper surfaces using a high-speed CO 2 snow jet was investigated. measurements included characterization the properties, determination efficiency, evaluation any possible adverse effects. method compared with nitrogen dry by commercial materials. results showed that is able to effectively remove surface did not cause observable degradatio...