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À̸§ °ü¸®ÀÚ waterindustry@hanmail.net ÀÛ¼ºÀÏ 2013.09.16 Á¶È¸¼ö 352
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¹Ì ·Î·»½º ¸®¹ö¸ð¾î ±¹¸³¿¬±¸¼Ò(Lawrence Livermore National Laboratory, LLNL)¿Í Ç÷θ®´Ù ÁÖ¸¦ ±â¹ÝÀ¸·Î ÇÏ´Â Chemergy Inc.ÀÇ ¿¬±¸¿øµéÀº Æó¼öó¸® °øÀåÀÇ ºÎ»ê¹°À» Àü±â »ý»êÀ» À§ÇÑ ¼ö¼Ò°¡½º·Î º¯È¯ÇÏ´Â Çõ½ÅÀûÀÎ ¹ÙÀÌ¿À ±â¼ú¿¡ ´ëÇÑ ½ÇÁõÅ×½ºÆ®¸¦ °èȹÇÏ°í ÀÖ´Ù.
 
1.75 ¹é¸¸ ´Þ·¯(¾à 19¾ï¿ø)¸¦ Áö¿ø¹Þ´Â À̹ø ÇÁ·ÎÁ§Æ®´Â Ķ¸®Æ÷´Ï¾Æ ÁÖ Antioch¿¡ À§Ä¡ÇÑ Delta Diablo Sanitation District(DDSD) ¼³ºñ¸¦ È°¿ëÇÏ¿© ÅëÇÕ ½Ã½ºÅÛ¿¡ ´ëÇÑ ½ÇÁõ Å×½ºÆ®¸¦ ¼öÇàÇÒ °èȹÀÌ´Ù. LLNLÀÇ È­ÇÐÀÚÀÎ Bob Glass´Â "½ÇÁõ ÇÁ·ÎÁ§Æ®´Â È­ÇÐ, ¿£Áö´Ï¾î¸µ, Àç·á µî ´Ù¾çÇÑ ºÐ¾ßÀÇ LLNL Àü¹®°¡µéÀ» È°¿ëÇÏ¿© »õ·Î¿î ±â¼ú¿¡ ´ëÇÑ ¸ðµ¨¸µ ¹× È¿À² ÃÖÀûÈ­¸¦ ÀÌ·ç´Â °ÍÀ» ¸ñÇ¥·Î ÇÑ´Ù. ÇÁ·ÎÁ§Æ®¸¦ ÅëÇØ ¿¡³ÊÁö »ý»ê°ú °ü·ÃÇÑ ¹ÙÀÌ¿À¸Å½ºÀÇ È°¿ëµµ¸¦ È®´ëÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ±â´ëµÈ´Ù"°í ¹àÇû´Ù.

½ÇÁõ ÇÁ·ÎÁ§Æ®´Â Ķ¸®Æ÷´Ï¾Æ ¿¡³ÊÁö À§¿øȸ(California Energy Commission)¿Í Chemergy·ÎºÎÅÍ ÀÚ±ÝÁö¿øÀ» ¹Þ°í ÀÖÀ¸¸ç Bay Area Biosolids to Energy (BAB2E) ¿¬ÇÕÀÇ ÈÄ¿øÀ» ¹Þ°í ÀÖ´Ù. BAB2EÀÇ ´ëº¯ÀÎÀÎ Caroline QuinnÀº "Chemergy»çÀÇ ±â¼úÀº ÀϹÝÀûÀÎ º¯È¯ ±â¼ú°ú ºñ±³ÇßÀ» ¶§ Áß¿Â ¹× ¼Ò±Ô¸ð¿¡¼­ ¼öºÐ ÇÔ·®ÀÌ ¸¹Àº °ø±Þ¿ø·á¸¦ ¾Æ¿ëÇÒ ¼ö ÀÖ´Â È­ÇаøÁ¤À» È°¿ëÇÏ´Â Çõ½ÅÀûÀÎ Á¢±Ù¹æ¹ýÀ» »ç¿ëÇϱ⠶§¹®¿¡ Èï¹Ì·Ó´Ù. ƯÈ÷ Àç»ý °¡´ÉÇÑ ¿¡³ÊÁö·Î¼­ ¹ÙÀÌ¿À°íÇü¹°(Biosolid)ÀÇ ÀáÀç·ÂÀ» ±Ø´ëÈ­ÇÒ ¼ö ÀÖ´Â ºñ¿¬¼Ò(Combustion-free) °øÁ¤¿¡ ÁßÁ¡À» µÎ°í ÀÖ´Ù"°í ¸»ÇÑ´Ù.

Glass´Â ½ÇÁõ ÇÁ·ÎÁ§Æ®°¡ ¿À´Â 10¿ù Áß¼øºÎÅÍ ½ÃÀÛµÉ ¿¹Á¤À̸ç, ¾à 1³â µ¿¾È Antioch Æó¼öó¸® ¼³ºñ¸¦ ÀÌ¿ëÇÏ¿© ¼öºÐÀÌ ¸¹ÀÌ Æ÷ÇÔµÈ ¹ÙÀÌ¿À°íÇü¹°(Wet Biosolid)À» ¾à 1Åæ/ÀϷΠó¸®ÇÏ¿© ÃÖ´ë 30 kWÀÇ Àü±â¸¦ »ý»êÇÒ °èȹÀ̶ó°í ¹àÇû´Ù. »ý»êµÈ Àü±â´Â ¼³ºñÀÇ ÀϺΠ±â´É¿¡ µ¿·ÂÀ» °ø±ÞÇϴµ¥ È°¿ëµÈ´Ù. Chemergy»ç´Â ÀÌ¹Ì Á¤¸³µÈ 2°³ÀÇ È­ÇаøÁ¤À» ÅëÇÕÇÏ´Â ±â¼úÀ» °³¹ßÇÏ¿´À¸¸ç, ÀÌ¿¡ ´ëÇÑ Æ¯Ç㸦 Ãâ¿ø ÁßÀÌ´Ù. À̵éÀÌ ÅëÇÕÇÑ ±â¼úÀº ´ÙÀ½°ú °°´Ù.
 
ù ¹ø°´Â ¼öºÐÀÌ ¸¹Àº ¹ÙÀÌ¿À°íÇü¹°¿¡¼­ ¿­, ºñ¿Â½Ç°¡½º, ¼ö¼Ò¸¦ »ý»êÇϱâ À§ÇÑ ¿­È­ÇÐ °øÁ¤ÀÌ´Ù. ±×¸®°í µÎ ¹ø°´Â Àç»ý°¡´É ¼ö¼Ò °¡½º¸¦ »ý»êÇϱâ À§ÇØ ¼ö¼Ò È­ÇÕ¹°À» ºÐÇØÇÏ´Â °øÁ¤ÀÌ´Ù. ½ÇÁõ ÇÁ·ÎÁ§Æ®¿¡¼­ ¼ö¼Ò °¡½º´Â ¿¬·á·Î »ç¿ëµÇ¸ç, Àü±â¸¦ »ý»êÇϱâ À§ÇØ CERL ¹× ¹Ì ¿¡³ÊÁöºÎ(Dept. of Energy)°¡ Á¦°øÇÏ´Â ¿¬·áÀüÁö(Fuel Cell)¿¡ ÁÖÀ﵃ °èȹÀÌ´Ù.

ÀÌ ±â¼úÀº kg´ç 2 ´Þ·¯ ¹Ì¸¸ÀÇ ºñ¿ëÀ¸·Î ¹ÙÀÌ¿À°íÇü¹°À» ¼ö¼Ò·Î ÀüȯÇÒ ¼ö Àֱ⠶§¹®¿¡ ¼ö¼Û¿ë ¿¬·á»Ó¸¸ ¾Æ´Ï¶ó °íÁ¤½Ä ¹ßÀü¼Ò¿¡µµ À¯¿ëÇÏ°Ô È°¿ëÇÒ °ÍÀ¸·Î ±â´ëµÈ´Ù. ½ÇÁõ ¿¬±¸ÀÇ ÀÏȯÀ¸·Î ¿¬±¸ÁøÀº ½Ã½ºÅÛÀÇ ¼º´É°ú È¿À², ¼ÒÀç ³»±¸¼º ¹× ±â¼ú°ú °ü·ÃµÈ ´Ù¾çÇÑ ºÎºÐ¿¡ ´ëÇØ È®ÀÎÇÒ ¿¹Á¤ÀÌ´Ù.
 
 LLNL ¿¬±¸ÁøÀÌ À̹ø ÇÁ·ÎÁ§Æ® ¼öÇà¿¡ ÀÖ¾î ÀûÇÕÇÑ ÀÌÀ¯ Áß Çϳª´Â À̵éÀÌ DOEÀÇ ¼ö¼Ò ¹× ¿¬·áÀüÁö ÇÁ·Î±×·¥¿¡ ¿À·£ ±â°£ Âü¿©ÇØ ¿ÔÀ¸¸ç, ¿©±â¼­ ¼ö¼ÒÀÇ »ý»ê, ÀúÀå, »ç¿ë ¹× ¾ÈÀü°ú °ü·ÃÇÑ ¸¹Àº ÀÛ¾÷À» ½Ç½ÃÇ߱⠶§¹®ÀÌ´Ù. Glass´Â "½ÇÁõ ÇÁ·ÎÁ§Æ®¿¡´Â ±Øº¹ÇØ¾ß ÇÒ ¸¹Àº ³­°üµéÀÌ ÀÖÁö¸¸ Æó¼öó¸® ±â°ü¿¡°Ô ¹ÙÀÌ¿À°íÇü¹°À» °ü¸®ÇÒ ¼ö ÀÖ´Â ´Ù¾çÇÑ ¼±ÅñÇÀ» ºÎ¿©ÇÏ°í, °ü·ÃµÈ Æ®·° ¿î¼Ûºñ¿ë, È­¼®¿¬·á »ç¿ë ¹× ¿Â½Ç°¡½º ¹ß»ýÀ» Àý°¨Çϸ鼭 ûÁ¤¿¡³ÊÁö¸¦ »ý»êÇÒ ¼ö ÀÖ´Ù"°í ¸»Çß´Ù.

[Ãâó : KISTI ¹Ì¸®¾È(http://mirian.kisti.re.kr) ¡º±Û·Î¹úµ¿Çâºê¸®ÇÎ(GTB)¡»2013. 09. 16]
 

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Researchers plan to demonstrate bioenergy technology
 

Researchers from Lawrence Livermore National Laboratory (LLNL) and Florida-based Chemergy Inc. plan to demonstrate an innovative bioenergy technology that converts wastewater treatment plant byproducts into hydrogen gas to produce electricity.
 
The $1.75 million project will demonstrate an integrated system on a limited industrial scale at the Delta Diablo Sanitation District (DDSD) facility in Antioch, Calif.
 
"Our job is to lend our multi-disciplinary expertise in chemistry, engineering and materials science to model and optimize the efficiency of this new technology," said chemist Bob Glass, the LLNL project leader. "We want to use this demonstration project as a model to encourage the widespread use of biosolids for energy production."
 
The demonstration project will be funded jointly by the California Energy Commission and Chemergy, and sponsored by the Bay Area Biosolids to Energy (BAB2E) Coalition. DDSD is spearheading this renewable energy effort for the coalition.
 
According to coalition spokesperson Caroline Quinn, "The Chemergy technology is of interest because of its innovative approach utilizing a chemical process for high-moisture feedstock at moderate temperatures and at smaller scale than traditional conversion technologies. The coalition is specifically focused on combustion-free processes that can maximize the renewable energy potential of biosolids."
 
The demonstration project will start in mid-October and Glass anticipates that in about a year the Antioch wastewater treatment plant will be processing one ton per day of wet biosolids and will be producing up to 30 kW of electricity. The electricity, in turn, will be used to power select functions at the plant.
 
Chemergy uses a patent-pending technology that integrates two established chemical processes. First, thermochemistry is used to produce heat, non-greenhouse gas carbon dioxide and a hydrogen compound from wet biosolids. Secondly, the hydrogen compound is decomposed to produce renewable hydrogen gas.
 
In this demonstration, the hydrogen gas will be used as a fuel and fed into fuel cells provided by CERL and the U.S. Dept. of Energy (DOE)?to generate electricity.
 
It is believed that the technology to be demonstrated by LLNL and Chemergy may convert wet biosolids into hydrogen at less than $2/kg, making it useful both for stationary power as well as for transportation fuel.
 
As part of the demonstration studies, the scientists will examine the system's performance and efficiency, and the durability of the materials, among other aspects of the technology, Glass said.
 
One reason LLNL researchers are well-suited to work on this project is because of their lengthy involvement in the DOE's hydrogen and fuel cell programs, where scientists have conducted major work on hydrogen production, storage, use and safety, Glass said.
 
"While the project has technological hurdles to overcome, it offers the potential for wastewater treatment agencies to diversify biosolids management options and reduce associated truck transportation costs, fossil fuel use and greenhouse gas generation, while producing clean energy," Glass said.
 
 
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