Adsorption and desorption behaviors of nitrobenzene and aniline by wetland soil

作者：Song Yanyu; Song Changchun^*

来源：4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010, 2010-06-18 to 2010-06-20.

DOI：10.1109/ICBBE.2010.5516254

• Adsorption behavior
• Adsorption capability
• Adsorption coefficients
• Batch equilibrium
• Desorption behavior
• Desorption characteristics
• Desorption rate
• Lessive soil
• Soil organic matters
• Sorption mechanism
• Wetland soil
• Wetland soils

Batch equilibrium experiments were performed to assess adsorption and desorption characteristics of nitrobenzene and aniline by wetland soil. The results showed that wetland soil had strong adsorption capability for nitrobenzene and aniline, adsorption and desorption of nitrobenzene and aniline by different types of wetland soil were different. The linear and Fruendlich model were fit for describing the adsorption behavior. Adsorption coefficient (Kf of nitrobenzene or aniline and soil organic matter (SOM) content were significant positively correlated (R2=0.789, p<0.01 for nitrobenzene and R2=0.953 p<0.01 for aniline ). The 0∼10 cm peat mire soil had the maximum adsorption coefficient (86.44 mg/kg for nitrobenzene and 42.67 mg/kg for aniline), which had the highest SOM content, it is indicated that sorption mechanisms of nitrobenzene and aniline include hydrophobic portioning characteristics. The meadow lessive soil absorbed minimum and desorbed maximum both for nitrobenzene and aniline.

• 出版日期2010