Study on the Characteristic of Adsorption Kinetics of Organochlorine Pesticides in Agricultural Soils
- DOI
- 10.2991/bep-16.2017.87How to use a DOI?
- Keywords
- BHC; DDT; soil; adsorption kinetics
- Abstract
To study the characteristic of adsorption kinetics of BHC and DDT in the unsaturated zone of typical northeastern soil field of China by adopting indoor soil adsorption simulation experiment. The purpose of the study is to reveal the pollution mechanism of BHC and DDT to soil and groundwater and provide a scientific basis for making reasonable and effective groundwater pollution prevention and control measures. The results showed that the adsorption of BHC and DDT in the tested soils were well consistent with the Langmuir kinetics equation. Adsorption can be divided into two processes, namely, rapid reaction phase and slow reaction phase. At the initial stage of reaction, the amount of adsorption increased with time and basically reached equilibrium at about 4~8 h. The equilibrium adsorption capacity was more than 50% in the first hour and above 90% in the second hour. In addition, the sorption and the desorption process actually occur simultaneously during the adsorption or desorption of organic matter. The adsorption / desorption two-compartment model can describe the two reversible processes at the same time. The fitted value r is from 0.8039 to 0.9651.
- Copyright
- © 2017, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Ming GAO AU - Xuming SUN AU - Hui HUANG PY - 2016/12 DA - 2016/12 TI - Study on the Characteristic of Adsorption Kinetics of Organochlorine Pesticides in Agricultural Soils BT - Proceedings of the 2016 International Conference on Biological Engineering and Pharmacy (BEP 2016) PB - Atlantis Press SP - 392 EP - 395 SN - 2468-5747 UR - https://doi.org/10.2991/bep-16.2017.87 DO - 10.2991/bep-16.2017.87 ID - GAO2016/12 ER -