Adsorption of Pyrene onto the Agricultural By-Product: Corncob
Adsorption of Pyrene onto the Agricultural By-Product: Corncob
复制标题
芘吸附到农业副产品：玉米芯上
DOI：
10.1007/s00128-015-1687-1
复制
发表时间：
2015
影响因子：
2.7
通讯作者：
Wan Liu
中科院分区：
文献类型：
--
作者：
Graeme Allinson;Chunyun Jia;Zongqiang Gong;Wan Liu
研究了芘在玉米芯上的吸附行为，为利用该材料作为固定化载体改善多环芳烃污染土壤的生物修复提供理论依据。结果如下。动力学实验表明，吸附过程符合准二级动力学模型。Weber-Morris模型拟合的粒内扩散表明，膜扩散和粒内扩散是关键的限速过程，吸附过程主要由边界层扩散和两个粒内扩散3个步骤组成。芘的实验吸附数据成功地描述了吸附分配平衡模型。在25°C时的最大吸附容量为214.8 μg g−1。当Ce/Sw（平衡浓度/溶解度）大于1时，吸附贡献显著降低。吸附随温度升高而降低。基于以上结果，玉米芯颗粒可用于芘污染土壤的生物修复。
The adsorption behavior of pyrene on corncob was studied to provide a theoretical basis for the possible use of this material as an immobilized carrier for improving the bioremediation of PAH-contaminated soil. The results were as follows. Kinetic experiments showed that the adsorption processes obeyed a pseudo-second-order model. The intraparticle diffusion of Weber–Morris model fitting showed that the film and intraparticle diffusions were the key rate-limiting processes, and the adsorption process mainly consisted of three steps: boundary layer diffusion and two intra-particle diffusions. Experimental adsorption data for pyrene were successfully described by the adsorption–partition equilibrium model. The maximum adsorption capacity at 25°C was 214.8 μg g−1. The adsorption contribution decreased significantly when the Ce/Sw (the equilibrium concentration/solubility in water) was higher than 1. Adsorption decreased with increased temperature. Based on the above results, the corncob particles could be helpful in the bioremediation of pyrene-contaminated soil.
登录
查看更多内容
影响因子：
9.9
作者：
G. Sonawane;V. Shrivastava
通讯作者：
G. Sonawane;V. Shrivastava
影响因子：
3
作者：
Xiaojun Li;Peijun Li;Xin Lin;Z. Gong;Shu-xiu Fan;Le Zheng;E. A. Verkhozina
通讯作者：
Xiaojun Li;Peijun Li;Xin Lin;Z. Gong;Shu-xiu Fan;Le Zheng;E. A. Verkhozina
DOI：
10.1016/j.jtice.2012.09.013
发表时间：
2013-01-01
影响因子：
5.7
作者：
Mane, Venkat S.;Babu, P. V. Vijay
通讯作者：
Babu, P. V. Vijay
影响因子：
15.1
作者：
Wu, Feng-Chin;Tseng, Ru-Ling;Juang, Ruey-Shin
通讯作者：
Juang, Ruey-Shin
影响因子：
15.1
作者：
Feng Wu;Ru-Ling Tseng;R. Juang
通讯作者：
Feng Wu;Ru-Ling Tseng;R. Juang