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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.36, no.3, 2003³â, pp.295-303
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½ÀÁö Åä¾ç¿¡¼ ¼Ò¼ö¼º À¯±âÈÇÕ¹°ÁúÀÇ ÈíÂø µ¿·ÂÇÐ
( Sorption Kinetics of Hydrophobic Organic Compounds in Wetland Soils ) |
| ¹ÚÁ¦Ã¶;½Å¿ø½Ä; ±Ý¿À°ø°ú´ëÇб³ ȯ°æ°øÇаú;±Ý¿À°ø°ú´ëÇб³ ȯ°æ°øÇаú;
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| ÀÚ¿¬½ÀÁö Åä¾ç¿¡¼ ¼Ò¼ö¼º À¯±âÈÇÕ¹°(¿°Èº¥Á¨ ¹× Æä³¾²¸°)ÀÇ ÈíÂøµ¿·ÂÇÐÀ» ½ÇÇè½Ç±Ô¸ðÀÇ È¸ºÐ½Ä ¹ÝÀÀ±â¸¦ ÀÌ¿ëÇÏ¿© Á¶»çÇÏ¿´´Ù. ´ÜÀÏ¿µ¿ª ¹°ÁúÀü´Þ¸ðµ¨ (one-site mass transfer model, OSMTM)°ú µÎ¿µ¿ª 1Â÷¼Óµµ¸ðµ¨ (two compartment first-order kinetic model, TCFOKM)À» »ç¿ëÇÏ¿© ÈíÂø¼Óµµ¸¦ ºÐ¼®ÇÏ¿´´Ù. OSMTM ºÐ¼®°á°ú ¿°Èº¥Á¨ÀÇ °æ¿ì 10${sim}$75½Ã°£ À̳»¿¡, Æä³¾²¸°ÀÇ °æ¿ì ¾à 2½Ã°£ À̳»¿¡ °¢°¢ °Ñº¸±â ÈíÂøÆòÇü¿¡ µµ´ÞÇÏ¿´´Ù. ¿°Èº¥Á¨ÀÇ °æ¿ì, Ç¥¸é Åä¾ç¿¡¼ÀÇ ÈíÂøÆòÇü½Ã°£ÀÌ ÇϺΠÅä¾çº¸´Ù ±æ°Ô ³ªÅ¸³µ´Âµ¥, ÀÌ´Â Åä¾ç À¯±âź¼ÒÀÇ ¹°¸®ÈÇÐÀû Ư¼ºÀÇ Â÷ÀÌ¿¡ ±âÀÎÇÑ´Ù. ±×·¯³ª, Æä³¾²¸°ÀÇ °æ¿ì °¢ Åä¾ç°£¿¡ ÈíÂøÆòÇü½Ã°£ÀÇ Â÷ÀÌ´Â ¾ø¾ú´Ù. °ü·Ã ¸ðµ¨¸Å°³º¯¼öÀÇ ¼ö¿¡¼ ±â´ëµÇµíÀÌ º¯¼ö°¡ 3°³ÀÎ TCFOKMÀÌ º¯¼ö°¡ 2°³ÀÎ OSMTMº¸´Ù ÈíÂø¼Óµµ¸¦ ´õ Àß Ç¥ÇöÇÒ ¼ö ÀÖ¾ú´Ù. ½ÇÇè°á°ú¿¡ ´ëÇÑ TCFOKMÀÇ °î¼±¸ÂÃãÀ¸·ÎºÎÅÍ ¾òÀº ¸Å°³º¯¼öÀÎ ºü¸¥ ÈíÂø¿µ¿ªÀÇ ºÐÀ²($f_1$)°ú ºü¸¥ ÈíÂø¿µ¿ª°ú ´À¸° ÈíÂø¿µ¿ªÀÇ 1Â÷ ÈíÂø¼Óµµ »ó¼ö($k_1$,¹× $k_2$)¸¦ ¾òÀ» ¼ö ÀÖ¾ú´Ù. TCFOKM ºÐ¼®°á°ú ºü¸¥ ÈíÂø¿µ¿ª¿¡¼ÀÇ ÈíÂø¼Óµµ »ó¼ö´Â ´À¸° ÈíÂø¿µ¿ª¿¡¼ÀÇ ÈíÂø¼Óµµ »ó¼ö º¸´Ù Å« °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ºü¸¥ ÈíÂø¿µ¿ªÀÇ ºÐÀ² ($f_1$)°ú ÈíÂø¼Óµµ»ó¼ö ($k_1$)´Â $k_{ow}$ °ªÀÌ Áõ°¡(Æä³¾²¸°>¿°Èº¥Á¨)ÇÔ¿¡ µû¶ó Áõ°¡ÇÏ¿´´Ù. ºü¸¥ ÈíÂø¿µ¿ª°ú ´À¸° ÈíÂø¿µ¿ª¿¡¼ÀÇ 1Â÷ ÈíÂø ¼Óµµ»ó¼ö´Â °¢°¢$10^{-0.1};-10^{+1}$°ú $10^{-4};-10^{-2}$ÀÇ ¹üÀ§¿¡¼ º¯ÈÇÏ¿´´Ù.TEX>ÀÇ ¿ëÃâ·®Àº Áö¿ªÀûÀ¸·Î Â÷À̰¡ ÄÇÀ¸³ª, $SiO_2$ ¿ëÃâ·®Àº Áö¿ªÀû Â÷À̰¡ ¹Ì¹ÌÇÏ¿´´Ù. ¹Ý¸é È£±â ¹× ºó»ê¼Ò Á¶°Ç¿¡¼ $NO_3;^-$Àº ¼öÁß¿¡¼ ÀúÁú·Î Èí¼öµÇ¾úÀ¸¸ç ±× Èí¼ö·®Àº ¿Âµµ¿¡ µû¶ó Á÷¼±ÀûÀ¸·Î Áõ°¡ÇÏ¿´´Ù. ¿Âµµ¿¡ µû¸¥ Èí¼öÀ² Áõ°¡´Â È£±â¼ºº¸´Ù ºó»ê¼Ò Á¶°Ç¿¡¼ ´õ ÄÇ´Ù. ³«µ¿° ÇÏ·ù Áö¿ªÀÇ ÀúÁú È£±âÁ¶°Ç/ºó»ê¼Ò Á¶°Ç¿¡¼ $NH_4;^+$, $NO_3;^-$, $PO_4;^{3-}$ ¹× $SiO_2$ÀÇ ¿ëÃâ·® ¹üÀ§´Â °¢°¢ -9${sim}$ 105 mgN $m^{-2}day^{-1}$, -156${sim}$62 $m^{-2}day^{-1}$ -5${sim}$5 $m^{-2}day^{-1}$, ¹× 12 ${sim}$ 117 $m^{-2}day^{-1}$¿´´Ù. ³«µ¿°°ú ¼³«µ¿°¿¡¼ ½Ä¹°ÇöûũſÀÇ 1Â÷ »ý»ê¼º°ú Á¶Ã¼ÀÇ C:N:PÀÇ Redfield ºñÀ² 106: 16: 1À» ÀÌ¿ëÇÏ¿© ÃßÁ¤ÇѰá°ú ÀúÁú¿¡¼ ¿ëÃâµÇ´Â $NH_4;^+$´Â ½Ä¹°ÇöûũſÀÇ ¿ä±¸·®ÀÇ 9 ${sim}$23%À̾ú°í, $PO_4;^{3-}$´Â 11 ${sim}$ 22%¸¦ Â÷ÁöÇÏ¿´´Ù.µµ·Î °ËÃâµÇ¾î À̸¦ °í·ÁÇÑÁ¤¼ö°øÁ¤ÀÇ °ü¸®°¡ ÇÊ¿äÇϸ®¶ó »ý°¢µÈ´Ù.$yr^{-1}$)ÀÇ 71%°¡ °¨¼ÒµÇ¾î¾ß ÇÒ Çʿ伺ÀÌ Á¦±âµÇ¾ú´Ù. ¶ÇÇÑ ¿©¸§Ã¶ ½ÉÃþ »ê¼Ò °í°¥ÀÌ ¾ß±âµÇ¾ú°í, ÀÌ ½Ã±â¿¡ ÅðÀû¹°·Î ¿ëÃâµÈ ÀÎÀÌ ½Ä¹°Çöûũſ ¼ºÀå¿¡ ÀÌ¿ëµÉ ¼ö Àֱ⶧¹®¿¡ ÅðÀû¹°¿¡ ´ëÇÑ °ü¸®µµ ¼öÇàµÉ Çʿ䰡 ÀÖ´Ù.r |
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| Sorption kinetics of hydrophobic organic compounds (chlorobenzene and phenanthrene) in natural wetland soils was investigated using laboratory batch adsorbers. One -site mass transfer model (OSMTM) and two compartment first-order kinetic model (TCFOKM) were used to analyze sorption kinetics. Analysis of OSMTM reveals that apparent sorption equilibria were obtained within 10 to 75 hours for chlorobenzene and 2 hours for phenanthrene, respectively. For chlorobenzene, the sorption equilibrium time for surface soil was longer than that of deeper soil presumably due to physico-chemical differences between the soils. For phenanthrene, however, no difference in sorption equilibrium time was observed between the soils. As expected from the number of model parameters involved, the three-parameter TCFOKM was better than the two-parameter OSMTM in describing sorption kinetics, The fraction of fast sorption ($f_1$) and the first-order sorption rate constants for fast ($k_1$)and slow ($k_2$) compartments were determined by fitting experimental data to the TCFOKM. The results of TCFOKM analysis indicate that the sorption rate constant in the fast compartment($k_1$) was much greater than that of slow fraction($k_2$) . The fraction of the fast sorption ($f_1$) and the sorption rate constant in the fast compartment($k_1$) were increasing in the order of increasing $k_{ow}$, phenanthrene > chlorobenzene. The first-order sorption rate constants in the fast ($k_1$) and slow ($k_2$) compartments were found to vary from $10^{-0.1};to;-10^{1.0}$ and from $10^{-4};to-10^{-2}$, respectively. |
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| Ű¿öµå |
| sorption;kinetics;chlorobenzene;phenanthrene;wetland peat soils; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.36, no.3, 2003³â, pp.295-303
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200318317181569)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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