Doczekalska Beata, Kuśmierek Krzysztof, Świątkowski Andrzej, Bartkowiak Monika
a Faculty of Wood Technology , Institute of Chemical Wood Technology, Poznań University of Life Sciences , Poznan , Poland.
b Faculty of Advanced Technologies and Chemistry , Institute of Chemistry, Military University of Technology , Warsaw , Poland.
J Environ Sci Health B. 2018 May 4;53(5):290-297. doi: 10.1080/03601234.2017.1421840. Epub 2018 Jan 16.
Adsorption of 2,4-dichlorophenoxyacetic acid (2,4-D) and 4-chloro-2-metylphenoxyacetic acid (MCPA) from aqueous solution onto activated carbons derived from various lignocellulosic materials including willow, miscanthus, flax, and hemp shives was investigated. The adsorption kinetic data were analyzed using two kinetic models: the pseudo-first order and pseudo-second order equations. The adsorption kinetics of both herbicides was better represented by the pseudo-second order model. The adsorption isotherms of 2,4-D and MCPA on the activated carbons were analyzed using the Freundlich and Langmuir isotherm models. The equilibrium data followed the Langmuir isotherm. The effect of pH on the adsorption was also studied. The results showed that the activated carbons prepared from the lignocellulosic materials are efficient adsorbents for the removal of 2,4-D and MCPA from aqueous solutions.
研究了2,4-二氯苯氧乙酸（2,4-D）和4-氯-2-甲基苯氧乙酸（MCPA）从水溶液中吸附到由包括柳树、芒草、亚麻和大麻屑在内的各种木质纤维素材料衍生的活性炭上的情况。使用两种动力学模型分析吸附动力学数据：伪一级和伪二级方程。两种除草剂的吸附动力学用伪二级模型能更好地表示。用Freundlich和Langmuir等温线模型分析了2,4-D和MCPA在活性炭上的吸附等温线。平衡数据符合Langmuir等温线。还研究了pH对吸附的影响。结果表明，由木质纤维素材料制备的活性炭是从水溶液中去除2,4-D和MCPA的有效吸附剂。
