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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.9, 2010³â, pp.37-45
µî¿Â ¹× µ¿Àû ÈíÂø ½ÇÇèÀ» ÅëÇÑ Á¦°­ ½½·¡±×ÀÇ ºñ¼Ò ÈíÂø Ư¼º
( Sorption Characteristics of Arsenic on Furnace Slag by Adsorption Isotherm and Kinetic Sorption Experiments )
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º» ¿¬±¸¿¡¼­´Â ÁöÇϼö¿¡ Á¸ÀçÇÏ´Â ºñ¼Ò¸¦ »ê¾÷ Æó±â¹°ÀÎ Á¦°­ ½½·¡±×¸¦ ÀÌ¿ëÇÏ¿© Á¦°ÅÇϰíÀÚ, Á¦°­ ½½·¡±×¿¡ ´ëÇÑ ºñ¼ÒÀÇ ÈíÂøÆ¯¼ºÀ» ±Ô¸íÇÏ¿´´Ù. À̸¦ À§ÇØ µî¿ÂÈíÂø ½ÇÇè°ú µ¿ÀûÈíÂø ½ÇÇèÀ» ¼öÇàÇÏ¿´°í, ÈíÂø¹ÝÀÀ ÈÄ ¿ë¾×ÀÇ È­ÇÐÀû Ư¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. ½ÇÇè °á°ú, ÈíÂø ½ÇÇèÀ» ¼öÇàÇÑ ¸ðµç ¿ë¾×Àº ¿°±â »óÅ·ΠÁ¸ÀçÇÏ¿´À¸¸ç(pH 9ÀÌ»ó), Ä®½·ÀÇ ³óµµ°¡ °¡Àå ³ô¾Ò´Ù(30~50mg/L). µî¿ÂÈíÂø ½ÇÇè°á°ú´Â Langmuir ¸ðµ¨º¸´ÙFreundlich ¸ðµ¨¿¡ Àû¿ëÇÏ´Â Á£ÀÌ ´õ ÇÕ¸®ÀûÀÌ¿´À¸¸ç, Á¦°­ ½½·¡±×¿¡ As(V)°¡ As(III)º¸´Ù ¾à 87% ´õ ¸¹ÀÌ ÈíÂøµÇ´Â °ÍÀ¸·Î È®ÀεƴÙ. µ¿ÀûÈíÂø ½ÇÇè°á°úÀÇ °æ¿ì, À¯»çÀÏÂ÷¸ðµ¨º¸´Ù À¯»çÀÌÂ÷¸ðµ¨À» ÅëÇØ ÇØ¼®ÇÏ´Â °ÍÀÌ ´õ ÀûÇÕÇÏ¿´´Ù. ºñ¼ÒÀÇ Ãʱâ³óµµ°¡ ³ôÀ»¼ö·Ï ÆòÇü ÈíÂø·®($q_e$)°ú ¿ÏÈ­½Ã°£($t_r$) ÀÌ ¸ðµÎ Áõ°¡ÇÏ¿´À¸¸ç, As(V)´Â As(III)º¸´Ù ÆòÇü ÈíÂø·®ÀÌ ¸¹°í ¿ÏÈ­½Ã°£Àº ªÀº °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ, À¯»çÀÌÂ÷¸ðµ¨À» ÅëÇØ ¿¹ÃøµÈ ÆòÇü ÈíÂø·®ÀÌ µî¿ÂÈíÂø ½ÇÇè¿¡¼­ ±¸ÇÑ ÆòÇü ÈíÂø·®°ú À¯»çÇØ µ¿ÀûÈíÂø ½ÇÇè°á°ú·Î µî¿ÂÈíÂø ½ÇÇè°á°ú¸¦ ¿¹ÃøÇÏ´Â °ÍÀÌ °¡´ÉÇÔÀ» È®ÀÎÇÏ¿´´Ù.
Sorption characteristics of arsenic on furnace slag were investigated to remove arsenic from groundwater using furnace slag, which is industrial waste generated from steel company. Adsorption isotherm experiments and kinetic sorption experiments were performed and the chemical characteristics of supernatants from these experiments were analyzed. Results showed that all supernatants were alkaline (above pH 9) and the highest ion concentration in the solution was found with calcium (30~50 mg/L). Results of adsorption isotherms were more adequately described by the Freundlich model than Langmuir model. From adsorption isotherms experiments, it was noted that the adsorption amount of As(V) was 87% higher than that of As(III). Results of kinetic sorption experiments were more properly fitted by pseudo second order (PSO) model than pseudo first order model. Equilibrium adsorption amount ($q_e$) and relaxation time ($t_r$) calculated from PSO model increased with initial concentration of arsenic. Equilibrium adsorption amount of As(V) was higher than that of As(III) and relaxation time of As(V) was shorter than that of As(III). Adsorption isotherm results could be predicted by kinetic adsorption results, since equilibrium adsorption amount calculated through PSO model generally agreed with equilibrium adsorption amount measured from adsorption isotherm.
 
Ű¿öµå
Adsorption isotherm;Arsenic;Furnace slag;Kinetic sorption;Pseudo second order model;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.9, 2010³â, pp.37-45
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201009654401121)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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