吸附
弗伦德利希方程
亚甲蓝
蔗渣
活性炭
朗缪尔
单层
化学工程
比表面积
朗缪尔吸附模型
化学
材料科学
核化学
有机化学
纳米技术
制浆造纸工业
催化作用
光催化
工程类
作者
Fitria Rahmawati,Arikasuci Fitonna Ridassepri,Chairunnisa,Agung Tri Wijayanta,Koji Nakabayashi,Jin Miyawaki,Takahiko Miyazaki
摘要
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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