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- Title
响应曲面法优化菌渣活性炭吸附水中亚甲基蓝.
- Authors
蒋仁杰; 司艳晓; 张文静; 顼冰冰; 李再兴; 安鸿雪
- Abstract
Dyeing wastewater has great harm to the environment. The nitrogen-doped activated carbon was prepared by using penicillin slag as raw material, the adsorption mechanism of methylene blue in water was studied, and the adsorption mechanism of activated carbon on methylene blue in water was optimized by response surface method. The results show that the pore structure of the prepared activated carbon was well developed and the specific surface area reaches 1640. 39 m² / g. The surface of the activated carbon contains hydroxyl groups and other functional groups. The adsorption process of methylene blue conforms to the pseudo-second-order kinetic model and the Langmuir isotherm adsorption model. The established response surface model is reasonable and reliable, and the optimal adsorption conditions are the adsorption time of 138 min, the adsorption temperature of 30 ℃, and the pH of 8. Under these conditions, the adsorption capacity of activated carbon for methylene blue reaches 332. 90 mg / g, which is basically consistent with the theoretical prediction value of the model of 335.76 mg /g.
- Publication
Science Technology & Engineering, 2023, Vol 23, Issue 17, p7468
- ISSN
1671-1815
- Publication type
Article