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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.2, 1999³â, pp.153-164
Æ÷È­ÁöÃþ³» ÀúºñÁß ºñ¼ö¿ë¼º À¯±â¿ë¸ÅÀÇ ¿ëÇØÁ¦°Å¸¦ À§ÇÑ °è¸éȰ¼ºÁ¦¹ýÀÇ ÃÖÀû Á¶ÀÛÀÎÀÚ µµÃâ
( Optimizing Surfactant-Enhanced Solubilzation of LNAPL from Soil in Saturated Zone )
ÀÌÀç¿ø;¹Ú±ÔÈ«;¹ÚÁعü; ¼­¿ï´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;Áß¾Ó´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;¼­¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;
 
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°è¸éȰ¼ºÁ¦ ¼ö¿ë¾×¿¡¼­ÀÇ BTEXÀÇ ¿ëÇØµµ¿¡ ´ëÇØ ÷°¡Á¦¸¦ Æ÷ÇÔ ¶Ç´Â ºÒÆ÷ÇÔÇÑ »óÅ·ΠÆò°¡ÇÏ¿´´Ù. ½ÃÇè´ë»óÀÌ µÈ À½À̿¼º °è¸éȰ¼ºÁ¦´Â SDSÀ̰í, ºñÀ̿¼º °è¸éȰ¼ºÁ¦·Î´Â NEODOL(equation omitted) 25-3°ú $SOFTANOLcircledR-90$ÀÌ »ç¿ëµÇ¾ú´Ù. MSR Test¿¡ ÀÖ¾î °è¸éȰ¼ºÁ¦ÀÇ HLB¼ö¿Í BTEXÀÇ 1¸ô´ç ºÎÇÇ ¹× ±Ø¼º¿¡ ÀÇÇÑ ¸¶À̼¿/¹°ÀÇ ºÐ¹è °è¼ö¿Í °ü·ÃµÈ ¿µÇâÀÌ Æò°¡µÇ¾ú°í CMC TestµîÀÌ ÁøÇàµÇ¾ú´Ù. ÀÌ¿Í °°Àº ½ÇÇèÀ» ÅëÇÏ¿© ethyl alcohol, hydrotrope, ÀüÇØÁú ¿ë¾×µîÀÇ Ã·°¡¹°Áú¿¡ ÀÇÇÑ ÃÖÀû ¿°µµ Á¶Àý ¹× ÃÖÀû ÀüÇØÁú Á¶Àý µîÀ» ÅëÇÏ¿© ¿À¿°¹°ÀÇ ¿ëÇØ´É Çâ»óÀ» À§ÇÑ ÃÖÀû Á¶ÀÛÀÎÀÚÀÇ µµÃâÀ» ²ÒÇÏ¿´´Ù. ¿ëÇØ´É¿¡ ÀÖ¾î °¡Àå È¿°úÀûÀÎ °ÍÀº $SOFTANOLcircledR-90$À¸·Î ³ªÅ¸³µ´Âµ¥ ÀÌ´Â $SOFTANOLcircledR-90$ÀÇ HLB ¼ö(13.6)°¡ BTEXÀÇ HLB ¼ö(11.4-12.2)¿Í À¯»çÇϱ⠶§¹®À̸ç, ÀÌ´Â º» ¿¬±¸¿¡¼­ ½ÇÇèÀûÀ¸·Î °ËÁõµÇ¾ú´Ù. $SOFTANOLcircledR-90$¿¡ ethyl alcoholÀ» ÷°¡ÇÒ °æ¿ì CMC¸¦ ÀúÇϽÃŰ°í ¿ëÇØµµ¸¦ Çâ»ó½ÃÄÑ ½ÃÇèµÈ ÷°¡Á¦ Áß °¡Àå Ź¿ùÇÏ¿´´Ù. ƯÈ÷ 3%ÀÇ ethyl alcoholÀ» ÷°¡ÇÏ¿´À» °æ¿ì °¡Àå ¿ì¼öÇÑ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ½ÇÇè °á°ú °è¸éȰ¼ºÁ¦ ¼ö¿ë¾×¿¡ ÀÇÇÑ BTEXÀÇ ¿ëÇØ´Â CMC ¶ó´Â ÀÓ°è³óµµ À̻󿡼­ ½ÃÀ۵Ǿú°í °è¸éȰ¼ºÁ¦ÀÇ ³óµµ¿¡ µû¶ó ºñ·ÊÀûÀ¸·Î Áõ°¡ÇÏ´Â ¾ç»óÀ» º¸¿´´Ù. °è¸éȰ¼ºÁ¦ ¼ö¿ë¾×¿¡¼­ micelle phase¿Í aqueous phase»çÀÌ¿¡¼­ BTEXÀÇ ºÐ¹è´Â ºÐ¹è°è¼ö $K_m$¿¡ ÀÇÇÏ¿© Ư¼ºÁö¿öÁø´Ù. 100mM SDS¿Í 117mM $SOFTANOLcircledR-90$ÀÇ Log $K_m$Àº °¢°¢ 2.95-3.76, 2.95-3.49ÀÇ °ªÀ» ³ªÅ¸³»¾ú´Ù. ¶ÇÇÑ SDS¿Í $SOFTANOLcircledR-90$ÀÇ °æ¿ì Log $K_m°ú; Log; K_{ow}$´Â ¼±ÇüÀûÀÎ °ü°è¸¦ º¸¿´´Ù. °è¸éȰ¼ºÁ¦ ¿ë¾×¿¡¼­ BTEXÀÇ ºÐ¹è °³³äÀº Áö¹Ý³» Æ÷ÁýµÇ¾î ÀÖ´Â ¼Ò¼ö¼º À¯±â ¿À¿°¹°ÀÇ Á¦°Å¸¦ ÅëÇÑ Áö¹Ýº¹¿ø°ú È¿À²¼º Æò°¡¿¡ Áß¿äÇÑ ¿ªÇÒÀ» ÇÒ °ÍÀÌ´Ù.
The solubilization of BTEX was evaluated in aqueous surfactant solutions with and without several additives. Anionic surfactant(Sodium Dodecyl Sulfate, SDS) and nonionic surfactants (NEODOL(equation omitted)25-3 and $SOFTANOLcircledR-90$ were used as test surfactants. The effects of surfactant HLB(Hydrophile-Lipophile Balance) Number and hydrocarbon molar volume and polarity of BTEX on the MSR(Molar Solubilization Ratio), micelle-water partition coefficient of BTEX, and CMC(C,itical Micelle Concentration) were investigated. Optimizing treatment conditions applicable to enhanced solubilization was also studied by manupulating salinity or electrolyte control with additives of ethyl alcohol, hydrotrope, and electrolyte solution. The most effective surfactant for solubilization was found $SOFTANOLcircledR-90$, since HLB number of 13.6 is similar to those values of BTEX ranging between 11.4 and 12.2, which was also proved experimentally. Ethyl alchohol of 3% was the most effective additives in reducing CMC and improving solubilization among the conditions using SDS, NEODOL(equation omitted)25-3, and $SOFTANOLcircledR-90$ with three additives. The partitioning of BTEX between surfactant micelles and aqueous solutions was characterized by a mole fraction micelle-phase/aqueous phase partion coefficient, $K_m$. Values of log $K_m$. for BTEX compounds in surfactant solutions of this study range from 2.95 to 3.76(100mM SDS) and 2.95 to 3.49(117mM $SOFTANOLcircledR-90$. Log $K_m$ appears to be a linear function of log $K_{ow}$ for SDS and $SOFTANOLcircledR-90$. A knowledge of partitioning of BTEX in aqueous surfactant system can be a prerequisite for the understanding of the behavior of hydrophobic organic compounds in soil-water systems in which surfactants play a role in remediation of contaminated soil and facilitated transport.
 
Ű¿öµå
Enhanced-Solubilization;HLB Number;MSR;CMC;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.2, 1999³â, pp.153-164
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921749121)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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