Removal of fenhexamid and pyrimethanil from aqueous solutions by clays and organoclays

被引：12
|
作者：
Baglieri, Andrea [1 ]
Borzi, Daniela [1 ]
Abbate, Cristina [1 ]
Negre, Michele [2 ]
Gennari, Mara [1 ]
机构：
[1] Dipartimento Sci Agron Agrochim & Prod Anim, Sez Sci Agrochim, I-95123 Catania, Italy
[2] Dipartimento Valorizzaz Protez Risorse Agroforest, Turin, Italy
来源：
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES | 2009年 / 44卷 / 03期
关键词：
Clays; organoclays; fenhexamid; pyrimethanil; adsorption; desorption; EXCHANGED CLAYS; ADSORPTION; SORPTION; WATER; GAC;
D O I：
10.1080/03601230902728153
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The ability of a sodium montmorillonite (CLONa) and two commercial available organoclays having interlayer organic cations possessing different functional groups (CLO20A and CLO30B) was investigated for adsorbing two pesticides namely fenexamid (FEX) and pyrimethanyl (PMT). The two organoclays displayed a higher affinity with the pesticides than the unmodified clay, but the improvement in adsorption capacity varied according to the characteristics of the pesticide and the interlayer organic cation. FEX was adsorbed to a greater extent than PMT by both organoclays, which may be due to the higher hydrophobicity of FEX thereby indicating considerable hydrophobic interaction between the adsorbent/adsorbate systems. Our findings may find application in the removal of water-soluble pesticides from aquifers.
引用
收藏
页码：220 / 225
页数：6
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