期刊论文

中文

农业科学与技术(英文版)

1009-4229

2017

18

1

15-20,26

10.16175/j.cnki.1009-4229.2017.01.004

Supported by Youth Science Foundation of Hunan Agricultural University（15QN30）； Agricultural Pesticide Residue Project of Ministry of Agriculture（NYBNYCL20100057）； Project of Hunan Department of Science and Technology（2006FJ4266）~~；

本校为第一机构

采用批量平衡法,研究了二氯喹啉酸在蒙脱石、凹凸棒石和针铁矿3种矿物中的吸附-解吸特征,并从吸附热力学角度探讨了矿物的吸附机理,结果表明,二氯喹啉酸在供试矿物中的吸附均包含了快速反应阶段和慢速平衡阶段,其吸附动力学曲线均符合准二级动力学方程、颗粒扩散方程和Elovich方程。其中以准二级动力学方程的拟合程度最好,在颗粒扩散方程中的常数项（C值）不为0,表明颗粒内的扩散速率不是决定二氯喹啉酸在供试矿物中吸附快慢的唯一因素。二氯喹啉酸在3种矿物中的吸附/解吸等温线均能用Linear和Freundlich方程很好地拟合,二氯喹啉酸在供试矿物中的吸附容量大小为:针铁矿>蒙脱石>凹凸棒石。二氯喹...

Adsorption-desorption characteristics of quinclorac on montmorillonite, attapulgite and goethite were investigated by the batch equilibrium techniques. The sorption mechanisms of minerals were discussed based on sorption thermodynamics. The results showed that the adsorption of quinclorac on the 3 minerals was included in both rapid stage and slow equilibrium stage. The adsorption kinetics consisted with the pseudo-second-order equation, the particle diffusion equation, and elovich equations, and among them, fitting from the pseudo-second-order...