• Title/Summary/Keyword: 바이오-오일

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기다센쮸 터미널의 중수도 시스템

  • 대한설비건설협회
    • 월간 기계설비
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    • s.32
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    • pp.115-120
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    • 1993
  • 기다센쮸 터미널에는 한외 여과와 활성오니 반응조로 구성된 막형 바이오리액터 방식의 중수도 시스템이 가동중인데, 주방배수를 주체로 한 빌딩배수를 재생하여 이용하고 있다. 막형 바이오리액터를 이용하면 프로세스는 단순화되며 설비도 매우 소형화된다. 또한 부하변동에의 대응성, 양호한 처리수질, 경제성 등 우수한 특징을 갖고 있다. 본고에서는 막형 바이오리액터의 특성을 확실히 하고 기다센쮸 터미널에 설치한 중수도 시스템의 실시 예를 소개한다.

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Upgrading of Quercus mongollica bio-oil by esterification (에스터화 반응을 이용한 신갈나무 바이오오일 품질 개선)

  • Chea, Kwang-Seok;Lee, Hyung-Won;Jeong, Han-Seob;Lee, Jae-Jung;Ju, Young-Min;Lee, Soo-Min
    • Journal of the Korean Applied Science and Technology
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    • v.35 no.4
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    • pp.975-984
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    • 2018
  • Fast pyrolysis bio-oil has unfavorable properties that restrict its use in many applications. Among the main issues are high acidity, instability, and water and oxygen content, which give rise to corrosiveness, polymerization during storage, and a low heating value. Esterification and azeotropic water removal can improve all of these properties. A 500 g of Quercus mongollica which grounded 0.8~1.4 mm was processed into bio-oil via fast pyrolysis for 2 seconds at $550^{\circ}C$. The esterification consists of treating pyrolysis oil with a high boiling alcohol like n-butanol at $70^{\circ}C$ under reduced pressure (100 hPa). All products are analyzed for water mass fraction, viscosity, higher heating value, pH, FT-IR and GC/MS. The water mass fraction can be reduced by 91.4 % (from 31.5 % to below 2.7 %), the viscosity by 65.8 % (from 36.5 to 12.5 cP) and the higher heating value can be increased by 96.8 % (from 3,918 to 7,712 kcal/kg), the pH by 1.3 (from 2.7 to 4.0). FT-IR and GC/MS analysis indicated that labile acids, aldehydes, ketones and lower alcohols were transformed to stable target products. Using this approach, the water content of the pyrolysis oil is reduced significantly. These improvements should allow the utilization of upgraded pyrolysis liquids in standard boilers and as fuel in CHP (Combined heat and power) plants.

달걀 한 개의 가치를 건강한 세상의 가치로 만든다.

  • 대한양계협회
    • KOREAN POULTRY JOURNAL
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    • v.33 no.7 s.381
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    • pp.84-87
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    • 2001
  • 우리나라에서는 어린이 설사, 위염을 치료하고 충치를 예방할 수 있는 달걀이 지난해말 개발되어 시중에 시판되고 있다. 이러한 기능성 계란은 한국식품개발연구원과 에그바이오텍, 시트리 등 바이오 업체 중심으로 개발되어 다한영농법인, 강남농장, 에그원, 가농바이오 등 농장에서 생산하여 소비자에게 공급하고 있다. 그러나 이러한 기능성계란은 인체용으로 사용되어 왔고 가축 질병 치료제로 사용되지는 못했다. ㈜단$\cdot$바이오텍(대표 김정우)은 첨단 생물공학기술을 이용하여 동물생체에 친화적인 고품질의 신생물질(면역항체, lgY)의 생산을 산업화함으로써 동물과 사람의 치료시 화학제제 및 항생제의 장기복용 및 오$\cdot$남용으로 인해 발생되는 제반 문제점을 해결한다는 사명감을 가지고 지난해 10월 출범하여 업계의 관심이 집중되고 있다.

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Analysis of toxicity using bio-digital contents (바이오 디지털 콘텐츠를 이용한 독성의 분석)

  • Kang, Jin-Seok
    • Journal of Digital Contents Society
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    • v.11 no.1
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    • pp.99-104
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    • 2010
  • Numerous bio-digital contents have been produced by new technology using biochip and others for analyzing early chemical-induced genes. These contents have little meaning by themselves, and so they should be modified and extracted after consideration of biological meaning. These include genomics, transcriptomics, protenomics, metabolomics, which combined into omics. Omics tools could be applied into toxicology, forming a new field of toxicogenomics. It is possible that approach of toxicogenomics can estimate toxicity more quickly and accurately by analyzing gene/protein/metabolite profiles. These approaches should help not only to discover highly sensitive and predictive biomarkers but also to understand molecular mechanism(s) of toxicity, based on the development of analysing technology. Furthermore, it is important that bio-digital contents should be obtained from specific cells having biological events more than from whole cells. Taken together, many bio-digital contents should be analyzed by careful calculating algorism under well-designed experimental protocols, network analysis using computational algorism and related profound databases.

Investigation of Physicochemical Properties of Bio-oils Produced from Pitch Pine (Pinus rigida) at Various Temperatures (열분해 온도에 따른 리기다소나무 바이오오일의 물리·화학적 특성 평가)

  • Kim, Tae-Seung;Kim, Jae-Young;Oh, Shin-Young;Hwang, Hye-Won;Choi, Joon-Weon
    • Journal of the Korean Wood Science and Technology
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    • v.40 no.3
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    • pp.204-211
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    • 2012
  • In this study, fast pyrolysis of pitch pine (Pinus rigida) was performed in a fluidized bed reactor under the temperature ranges between 400 and $550^{\circ}C$ at the residence time of 1.9 sec. Essential pyrolytic products (bio-oil, biochar, and gas) were produced and their yield was clearly influenced by temperature. The maximum yield of bio-oil was observed to 64.9 wt% (wet basis) at the temperature of $500^{\circ}C$. As pyrolysis temperature increased, the yield of biochar decreased from 36.8 to 11.1 wt%, while gas amount continuously increased from 16.1 to 33.0 wt%. Water content as well as heating value of bio-oils were obviously sensitive to the pyrolysis temperature. The water contents in the bio-oil clearly decreased from 26.1 ($400^{\circ}C$) to 11.9 wt% ($550^{\circ}C$), with increasing the fast pyrolysis temperature, while their higher heating values were increased from 16.6 MJ/kg to 19.3 MJ/kg. According to GC/MS analysis, 22 degradation compounds were identified from the bio-oils and 10 compounds were derived from carbohydrate, 12 compounds were derived from lignin.

Research and Development Trends on Bio-oil Upgrading via Catalytic Vapor Cracking (촉매 접촉 분해법을 활용한 바이오오일 개질 연구 동향)

  • Park, Hyun Ju;Jeon, Jong-Ki;Park, Sung Hoon;Yim, Jin-Heong;Sohn, Jung Min;Park, Young-Kwon
    • Applied Chemistry for Engineering
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    • v.20 no.1
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    • pp.1-8
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    • 2009
  • Bio-oil has attracted considerable interest as one of the promising renewable energy resources because it can be used as a feedstock in conventional petroleum refineries for the production of high value chemicals or next-generation hydrocarbon fuels. Currently, catalytic vapor cracking is considered the most potential upgrading method for stabilization of bio-oil, which is a pre-process required prior to feeding bio-oil into refineries. This review introduces the recent research and development trends on bio-oil upgrading via catalytic vapor cracking, focusing on catalysts and upgrading methods used.

Application of Saccharified Acorn-starch for Biomass and Lipid Accumulation of Microalgae (당화된 도토리의 전분이 미세조류 바이오매스 증식과 바이오오일 함량에 미치는 영향)

  • Choi, Hee-Jeong;Lee, Jung-Min
    • Journal of Korean Society on Water Environment
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    • v.32 no.2
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    • pp.197-204
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    • 2016
  • The growth of the algae strain Chlorella vulgaris under mixotrophic conditions in the presence of saccharified acorn-starch (acorn-glucose) was evaluated with the objective of increasing biomass growth and triacylglycerols (TAGs) content. The results indicated that 81.3% of starch was converted to glucose in acorns. C.vulgaris algal strains grown with acorn-glucose produced higher biomass and TAGs content than with autotrophic growth. The highest biomass production and TAGs content with 3 g/L acorn-glucose were 12.44 g/L and 32.9%, respectively. Biomass production with 3 g/L acorn-glucose was 16.4 fold higher than under autotrophic growth condition. These findings suggested that 3 g/L acorn-glucose is economic and efficient for biomass production/productivity and TAGs content of microalgae. This study provides a feasible way to reduce the cost of bioenergy production from microalgae.