Fractionation of dissolved organic matter from surface waters using macroporous resins

被引:25
作者
Afcharian, A
Levi, Y
Kiene, L
Scribe, P
机构
[1] CIRSEE Lyonnaise Eaux, F-78230 Le Pecq, France
[2] Univ Paris 06, URA CNRS 2076, Lab Phys & Chim Marines, F-75252 Paris 05, France
关键词
surface waters; macroporous resins; biodegradable dissolved organic carbon (BDOC); chlorine demand; humic substances; granular activated carbon (GAC); fractionation; adsorption;
D O I
10.1016/S0043-1354(97)00166-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
To obtain fractions enriched with biodegradable dissolved organic carbon (BDOC) or with organic compounds responsible for the chlorine demand (CID) and for trihalomethane formation potential (THMFP), Seine river water samples were percolated on various macroporous resins (anionic, cationic and non-ionic) and compared with granulated activated carbon (GAG). In addition, measurement of UV absorbance at 254 nm and the fluorescence index (lambda(excitation) 320 nm) had allowed to follow up the retention of dissolved organic matter by the different adsorbants. In contrast to cationic and non-ionic resins, anionic resins confirm their excellent retention capacity of organic compounds responsible for UV 254 absorbance and fluorescence index. The relative values of BDOC/DOC ratio (mg-C/mg-C) are slightly increased in the effluents of anionic resins, indicating that they retain a little preferentially the refractory fraction instead of the biodegradable fraction. There is no significant difference between the ratio of CID/DOC (mg-Cl-2/mg-C) in influent and effluent of anionic resins. Cationic resin has a low capacity for retention of DOG, but they seem to retain significantly the organic compounds responsible for ClD. The capability of anionic resins to retain THMFP is similar to that of GAG. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:2989 / 2996
页数:8
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