This research study carbon activation prepared from Bagasse, a waste of sugar factory. The activation was conducted in water vapor at 600°C (C600) and 700 °C (C700). The activated carbon was then tested for water vapor adsorption. The produced-carbon has diffraction peak at 2θ of 25°, with surface area are 584.940 m²/g and 533.301 m²/g for C600 and C700, respectively. C600 also shows higher water vapor adsorption than C700, the value is 0.223 g/g. It shows a potency of Bagasse waste as raw material for adsorbent powder.

This research work reports on the potential of bagasse, a solid waste from sugar factories, to produce activated-carbon (AC) as an adsorbent. The activation was conducted under 500, 600, and 700 °C using steam as the activation agent to produce AC500, AC600, and AC700, respectively. The prepared-materials were characterized to understand their elemental content, surface morphology, thermal properties, functional groups identification, surface area, and pore size. AC700 provided the highest surface area of 592.36 m2/g and indicated the contribution of mesopores distributes along 1.5–8.0 nm of pore size. Therefore, an adsorption test was conducted with AC700 as adsorbent. The results show that methylene blue (MB) adsorption reached equilibrium after 30 min of adsorption time. The adsorption isotherm applied to a monolayer Langmuir isotherm was fitted by linearization, resulting in a constant R2 of 0.999. The MB adsorption to AC700 favorably occurred, as proven by the Freundlich parameter 1/n of 0.881, which is less than 1. The Dubinin-Radushkevich isotherm confirmed that the adsorption proceeded through physical interaction with adsorption energy of 3.536 kJ/mol.

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