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[2014] [À¯·´] Æó±â¹°·ÎºÎÅÍ ÈñÅä·ù ȸ¼ö¸¦ À§ÇØ ³ë·Â
À̸§ °ü¸®ÀÚ waterindustry@hanmail.net ÀÛ¼ºÀÏ 2014.02.24 Á¶È¸¼ö 101
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À¯·´¿¡ À§Ä¡ÇÑ 7°³ÀÇ ÁÖ¿ä ¿¬±¸±â°ü (Fraunhofer, CEA, TNO, VTT, SINTEF, Tecnalia, SP)Àº Æó±â¹°¿¡¼­ »õ·Î¿î °¡Ä¡¸¦ ã´Â °øµ¿°³¹ß ÇÁ·Î±×·¥À» Çù·ÂÇÏ°í ÀÖ´Ù. ÀÌ ÇÁ·Î±×·¥ÀÇ ¸ñÇ¥´Â Æó±â¹°¿¡¼­ ÈñÅä·ù ±Ý¼Ó(Rare Earth Metals)À» ÀçÈ°¿ëÇÏ´Â ¹æ¾ÈÀ» ¹ß±¼ÇÏ´Â °ÍÀÌ´Ù. SINTEF´Â À̹ø ÇÁ·Î±×·¥¿¡ ´ëÇÑ ÀüüÀûÀÎ ÄÚµð³×À̼ÇÀ» ´ã´çÇÏ°í ÀÖÀ¸¸ç, À¯¿ëÇÑ ºÐ¼® ±â¹ý ¹× ÃßÃâ ±â¼úÀ» ¹ß±¼Çϱâ À§ÇÑ ³ë·ÂÀ¸·Î 2°³ÀÇ ¼ÒÀç ±â¼ú ±×·ìÀ» È°¿ëÇÏ°í ÀÖ´Ù. ÇÁ·Î±×·¥¿¡ Âü¿©ÇÏ°í ÀÖ´Â ¿¬±¸¿øµéÀÌ ¼±ÅÃÇÑ ¹æ¾È¿¡´Â ¾Ë·ç¹Ì´½ »ê¾÷(Aluminium Industry)¿¡¼­ Àß ¾Ë·ÁÁø Àü±âºÐÇØ ±â¼úÀÌ Æ÷ÇԵǾî ÀÖ´Ù.

SNTEFÀÇ Odd L©ªvhaugenÀº "À̹ø ÇÁ·Î±×·¥ÀÇ ¸ñÇ¥´Â Æó±â¹°·ÎºÎÅÍ °¡Ä¡ ÀÖ´Â ¹°ÁúÀ» ÃßÃâÇÏ´Â °ÍÀÌ´Ù. ¿©±â¼­ ÇØ°áÇØ¾ß ÇÒ ¹®Á¦´Â ÀçÈ°¿ëÀ» À§ÇØ ¹°ÁúÀÌ ÃæºÐÈ÷ ±ú²ýÇØ¾ß Çϸç, ´Ù¸¥ À¯ÇØ ¹°Áú¿¡ ÀÇÇØ ¿À¿°µÇÁö ¾Ê¾Ò´Ù´Â °ÍÀ» È®ÀÎÇØ¾ß ÇÑ´Ù´Â °Í¡±À̶ó°í ¼³¸íÇÏ¿´´Ù. ¿¬±¸ÁøÀº ¼öÇàÇÏ´Â ÀÛ¾÷ Áß ÁýÁßÇÏ°í ÀÖ´Â ºÎºÐÀº ¾î¶² Á¦Ç°ÀÌ ¿À¿°¹°ÁúÀ» Æ÷ÇÔÇÏ°í Àִ°¡¸¦ ¾Ë¾Æ³»´Â °ÍÀÌ´Ù. ÀÌ·¯ÇÑ ¹æ¹ýÀº ¿À¿°¹°ÁúÀÇ ÇÔ·®À» ºÐ¼®ÇÏ°í ÃøÁ¤Çϱâ À§ÇÑ ÃÖÀûÀÇ ¹æ¾ÈÀÌ´Ù. ¶ÇÇÑ ¿¬±¸ÁøÀº ó¸® °øÁ¤¿¡¼­ ³ª³ëÀÔÀÚ(Nanoparticle)¸¦ ÀçÈ°¿ëÇϱâ À§ÇÑ ÃßÃâ ¹æ¾È ¹× ±â¼ú¿¡ ´ëÇؼ­µµ Æò°¡ÇÏ°í ÀÖ´Ù. ±×¸®°í ¼Ò°¢ ÈÄ¿¡ ¹ß»ýÇÏ´Â Àç(Ash) ÇÔ·®À» ¾î¶»°Ô ºÐ¼®ÇÒ ¼ö ÀÖ´ÂÁö¿Í °ü·ÃÇÑ ¿¬±¸µµ ÁøÇà ÁßÀÌ´Ù.

SINTEF ¿¬±¸ÁøÀº ¾Ë·ç¹Ì´½ °øÀå¿¡¼­ »ç¿ëµÇ´Â Àü±âºÐÇØ ±â¼úÀ» È°¿ëÇÏ¿© ¹ö·ÁÁø ÀÚ¼®À̳ª Á¦Á¶¾÷ü¿¡¼­ ¹ß»ýÇÏ´Â Æó±â¹°·ÎºÎÅÍ ÀÚ¼ºÇÕ±Ý(Magnetic Alloys)À» ÀçÈ°¿ëÇÒ ¼ö ÀÖÀ» °ÍÀ̶ó »ý°¢ÇÑ´Ù. ±×·±µ¥ ³ëÈÄµÈ Ä£È¯°æ ÀÚµ¿Â÷ÀÇ ÆóÁ¶°¢µéÀÌ ¸ðÅÍ·Î ÀçÈ°¿ëÇϴµ¥ ÀÌ¿ëµÇ±â±îÁö´Â Á» ´õ ¸¹Àº ½Ã°£ÀÌ ÇÊ¿äÇÒ °ÍÀ¸·Î ¿¹»óµÇ¸ç, ÀÌ·¯ÇÑ ÀÌÀ¯·Î ÀÚ¼® Á¦Á¶¾÷üµé¿¡¼­ ¹ß»ýÇÏ´Â Æó±â¹° ÂÊÀ¸·Î ´«À» µ¹¸®°í ÀÖ´Ù.

±×·¯³ª ÀÌ·¯ÇÑ °øÁ¤Àº ¾ÆÁ÷µµ ´À¸®°Ô ÁøÇàµÇ°í ÀÖÀ¸¸ç, ¿¬±¸ÁøÀÌ ¼³Á¤ÇÑ ¸ñÇ¥¸¦ ´Þ¼ºÇÒ ¼ö Àִ°¡¸¦ È®ÀÎÇϱâ Àü¿¡ ¸¹Àº ÀÛ¾÷ÀÌ ÀÌ·ç¾îÁ®¾ß ÇÑ´Ù. ¸¸¾à À̵éÀÇ ±â¼úÀÌ ¼º°øÀûÀ¸·Î Àû¿ëµÉ ¼ö ÀÖ´Ù¸é °­»ê(Strong Acid)À» »ç¿ëÇÏ´Â ´ëü °øÁ¤ ´ëºñ ÈξÀ °£´ÜÇÑ ¹æ¾ÈÀÌ µÉ °ÍÀÌ´Ù. ±×¸®°í Àü±âºÐÇØ ´Ü°è·Î ÁøÇàÇϱâ Àü¿¡ ÇØ°áÇØ¾ß ÇÒ ¸î °¡Áö ´Ù¸¥ ¹®Á¦µéµµ ÀÖ´Ù. ¿¹¸¦ µé¾î ³ëÈÄµÈ ÀÚ¼®À» ¼öÁýÇÏ°í ºÐ¸®ÇÏ´Â ¹®Á¦µµ ÀÖÀ» °ÍÀÌ´Ù. ¶ÇÇÑ ¿ÂÀüÇÑ ¿µ±¸ ÀÚ¼®ÀÇ Àå°Å¸® ¿î¼ÛÀÌ ±ÝÁöµÇ¾î Àֱ⠶§¹®¿¡ Áö¿ªÀûÀ¸·Î ÀÚ¼®ÀÇ Àڱ⸦ ¼Ò°Å½ÃÄѾ߸¸ ÇÑ´Ù. Odd L©ªvhaugenÀº "ÀÌ¿Ü ¶Ç ´Ù¸¥ ÇØ°á°úÁ¦´Â °¡½º, ¹° ¹× °íü¹°ÁúÀÇ ³ª³ëÀÔÀÚ¸¦ È®ÀÎÇÏ°í Ư¼ºÀ» ÆľÇÇÒ ¼ö ÀÖ´Â ±â¼úÀ» °³¹ßÇÏ´Â ÀÏÀÌ´Ù. ¿¬±¸ÁøÀº Æó±â¹° ó¸® °øÁ¤¿¡¼­ ³ª³ëÀÔÀÚÀÇ ÇൿƯ¼ºÀ» Æò°¡ÇÒ ¼ö ÀÖ´Â ±â¼úÀ» È®º¸Çؾ߸¸ ÇÑ´Ù"°í ¹àÇû´Ù.
 
[Ãâó : KISTI ¹Ì¸®¾È(http://mirian.kisti.re.kr) ¡º±Û·Î¹úµ¿Çâºê¸®ÇÎ(GTB)¡»2014. 02. 21]
 
[¿ø¹®º¸±â]
 
European research institutes partner on rare earth metal recovery from waste using electrolysis
 
Seven major European research institutes (Fraunhofer, CEA, TNO, VTT, SINTEF, Tecnalia and SP) have joined forces to invest in a joint program (Value from Waste) aimed at tackling the recycling of rare earth metals from waste. SINTEF is coordinating the program, which is using two groups of material technologies in an effort to find good analytical and extraction methods. The approach chosen by the researchers involves an electrolysis technology well-known from the aluminium industry.
 
The aim is to extract valuable materials from the waste streams. The challenges lie in the fact that the material must be sufficiently clean in order to be recycled, and we have to be sure that it is not contaminated by other harmful materials.
 
—Odd L©ªvhaugen, SINTEF ICT
 
Researchers are therefore focusing much of their work on finding out which products could contain pollutants, which methods are best for analyzing and measuring the content of the polluted materials, and when such products can be expected to be found in waste.
 
They are also evaluating extraction methods, techniques to recycle nanoparticles in the treatment process, and how the constituents of ash can be analysed after incineration.
 
On the basis of tests, SINTEF researchers believe that the electrolysis technology used in aluminium plants can be used to recycle magnetic alloys from discarded magnets and scrap material from magnet manufacturers. It will take some time before there are enough scrap eco-cars to be able to recycle their motors, which is why they are turning to the magnet manufacturers for the magnetic alloys.
 
However, the process is still slow, and much work remains to be done before the researchers will know whether they will be able to achieve their goal. If they are successful, they will have found a method that is much simpler than alternative processes based on the use of strong acids.
 
Several other problems must also be solved for the stages before the electrolysis process, such as collection and disassembly methods for used magnets. Further, the magnets themselves must also be demagnetized locally, since the long-distance transport of intact permanent magnets is prohibited.
 
Other challenges include finding methods that can identify and characterize nanoparticles in gases, water and solid materials. And we must create a toolbox of methods to evaluate the behavior of nanoparticles in waste treatment processes.
 
—Odd L©ªvhaugen
 
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