Effect of activated carbon produced from biochar on removal of 2, 4-dichlorophenoxy acetic acid from aqueous solutions

Indian Journal of Chemical Technology

article

Dilek Angın¹  Sinem Güneş²  Asude Ateş³  Uğur Selengil⁴  Esra Altıntığ⁵  Burcu Tan⁶  Hülya Demirel⁷ 

[1] Sakarya University, Department of Food Engineering;Harran University, Department of Food Technology;Sakarya University, Department of Environmental Engineering;Eskişehir Osmangazi University, Chemical Engineering Department;Sakarya University of Applied Sciences, Chemical and Chemical Processing Technologies Department;Çanakkale Onsekiz Mart University, Chemistry Department;Sakarya University of Applied Sciences, Environmental Protection and Control Department

关键词: Activated carbon;    Adsorption;    Biochar;    Herbicide;    Potassium hydroxide;    Article;   

学科分类：化学（综合）

来源: National Institute of Science Communication and Information Resources

【 摘 要 】

The toxicity of pesticides and their degradation products is making these chemical substances a potential hazard by contaminating our environment. Therefore, the removal of pesticides from water is one of the major environmental concerns these days. 2,4-Dichlorophenoxy acetic acid (2,4-D) belonging to the herbicide group, which is among the numerous pesticides used today, is widely used to control weeds due to its low cost and good selectivity. In order to offer an alternative to this environmental problem, the effect of activated carbon obtained by chemical activation from pyrolysis biochar on 2,4-dichlorophenoxy acetic acid removal from aqueous solutions has been investigated. The adsorption mechanism is explained by analyzing the effect of adsorption parameters. It is determined that the equilibrium data are suitable for Langmuir isotherm model among the applied isotherm models and the monolayer adsorption capacity is 344.83 mg g-1 at 318 K. The adsorption kinetics data of 2,4-D on activated carbon is better defined by the pseudo-second-order model. Thermodynamic calculations reveal that the adsorption process is spontaneous and endothermic. The activated carbon obtained from biochar has been observed to have a high adsorption capacity compared to adsorbent materials obtained from many other raw materials for the removal of 2,4-Dichlorophenoxy acetic acid.

【 授权许可】

CC BY-NC-ND