Study on the preparation of straw activated carbon and its phenol adsorption properties

International Conference on Energy Engineering and Environmental Protection 2016

能源学;生态环境科学

Chen, Liping^1

College of Chemistry and Environment Science, Inner Mongolia Normal University, Hohhot

010022, China^1

关键词: Adsorbent dosage;    Adsorption capacities;    Adsorption data;    Exothermic process;    Langmuir isotherm;    Optimum conditions;    Phenol adsorption;    Sunflower straws;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/52/1/012101/pdf
DOI  :  10.1088/1742-6596/52/1/012101

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Using sunflower straw as raw materials to manufacture straw activated carbon-modified by phosphoric acidand adsorption isotherm of phenol on straw activated carbon was studied in a batch reactor. The physical properties of the prepared straw activated carbons were characterized by scanning electron microscopy. The effect of various parameters, adsorbent dose, pH and temperature, were studied on optimum conditions. The results have shown that the absorbent was efficient, the removal ratio of phenol up to 99.36% with an adsorbent dosage of 16 g•L-1, a pH of 6.0-8.0, at 25 °C. The experimental adsorption data fitted reasonably well to the Langmuir isotherm, the maximum adsorption capacity was 109.89 mg/g. The process of adsorption is a exothermic process.