• Title/Summary/Keyword: Bio-waste

검색결과 370건 처리시간 0.031초

바이오가스 이용 기술지침 마련을 위한 연구(I) - 현장조사 결과 중심으로 (A Study on Establishment of Technical Guideline of the Installation and Operation for the Biogas Utilization of Power Generation and Stream - Results of the Field Investigation)

  • 문희성;배지수;박호연;전태완;이영기;이동진
    • 유기물자원화
    • /
    • 제26권1호
    • /
    • pp.55-64
    • /
    • 2018
  • 본 연구는 유기성폐자원(가축분뇨, 음식물류폐기물, 음식물류폐수 등)의 바이오가스 이용에 대한 적정 설계 및 운전 기술지침서 마련하고자 현장조사와 정밀모니터링 등을 실시하였다. 정부의 중장기 바이오가스화 정책에 따라 폐자원의 자원화 시설 확충이 활발히 추진되고 있다. 하지만 생산된 바이오가스를 이용하여 발전 및 스팀으로 활용하는 시설은 효율이 아직은 저조하고 잦은 고장이 발생되고 있다. 현재 운영 중인 바이오가스화 11개소를 대상으로 바이오가스 이용 공정별 특징 및 문제점을 분석하고 혐기소화조 현장 시료의 계절별 정밀모니터링을 실시하여 바이오가스 이용 공정 흐름에 따른 설계 운영 가이드라인을 제시하였다. 현장조사 수행 결과, 바이오가스 이용 공정에서 바이오가스의 적정 제습, 황화수소 전처리, 발전시설의 적정처리 등이 주요 문제점으로 조사되었다. 따라서 유기성폐자원의 바이오가스화 시설의 단점을 보완하고 바이오가스 이용 최적화 방안을 마련하기 위하여 현장지설에 대한 정밀조사를 실시하여 공정별 문제점들을 정리하였다.

녹색기업의 사업활동 전 과정에 대한 환경성 평가 -2. 물질수지 및 환경개선 (Life Cycle Assessment for the Business Activities of Green Company -2. Mass Balance and Environmental Improvement)

  • 신춘환;박도현
    • 한국환경과학회지
    • /
    • 제22권4호
    • /
    • pp.425-433
    • /
    • 2013
  • A mass balance of process was calculated by using the analysis of basic unit and environmental assessment of all the processes of Busan fashion color industry cooperative that operates a combined heat and power plant and a bio treatment plant. The mass balance for the combined heat and power plant was done, based on boiler and water treatment processes while each unit reactor was used for the bio treatment plant. From the results above, a resource recycle network, a treatment flowchart for food waste water/wastewater treatment and a carbon reduction program were established.

Value Addition Span of Silkworm Cocoon - Time for Utility Optimization

  • Reddy, R. Manohar
    • International Journal of Industrial Entomology and Biomaterials
    • /
    • 제17권1호
    • /
    • pp.109-113
    • /
    • 2008
  • Realizing the scope of utilizing by-products of silk cocoons by applying appropriate methods is the immediate crave to optimize returns. The nutritive value of pupae suits for human diet, feed for poultry, carps, fish, rabbits, piggery and dogs. The pupal skin, fat, oil, cocoon palade have applications in oleo chemical, soap, glycerin, cosmetic, artificial fibres, membranes and n-triacontanol isolation. The pupal proteins Chitin, Shinki fibroin, Serrapeptidase, glucosamine are latent precursors of post surgical, anti-carcinogenic, anti-inflammative, anti-bacterial, anti-histaminic, gastric, hepatitis, pancreatitis, leukocytopenia, neurological, ophthalmic, blood pressure, cardiac and diabetic medicines and for preparation of vitamins A, E and K. The silk and its proteins sericin and fibroin are potentially used for wound healing, diabetes, impotence, sinusitis, arthritis, edema, cystitis, epididymitis, tissue regeneration, cancer, post-surgical trauma and used as anti-oxidatives, bio-adhesives, ultra violet screens and bio-active textiles. The waste cocoons can be used in making art crafts like garlands, carpets, overcoats, decoratives and greeting cards. The in-depth research towards utility optimization and make aware this reality to sericulturists, reelers, weavers, traders, entrepreneurs, policy makers etc., is the upright want of the today's Sericulture industry.

유.무기성 악취저감을 위한 최적의 미생물 포괄고정담체 제조법에 관한 연구 (Development of Optimal Bio-encapsulated Media for Organic/Inorganic Odor Reduction)

  • 김선진;김태형;이윤희;장현섭;송지현;황선진
    • 상하수도학회지
    • /
    • 제26권1호
    • /
    • pp.29-35
    • /
    • 2012
  • A bio-encapsuled media was developed to apply on reducing odors produced from organic waste treatment process. The microorganism, candida tropicalis, was encapsulated in sponge media consisted of polyurethane material. Sodium alginate as a natural polymer which does not affect to hydrophilic microbes and PEGDA(poly ethylene glycol diacrylate) as a artificial polymer were used for the encapsuled media. The media was evaluated with TMEDA (N,N,N',N'-tetramethylethylenediamine, 0.02~0.1%) as a catalyst at different temperature 25 and $35^{\circ}C$. The best performance was achieved with 0.02% of TMEDA at $25^{\circ}C$. The microbes' activity in the media was examined by Live/Dead cell method.

ALC(Autoclaved Light-weight Concrete)를 이용한 생물학적 반응벽체에 관한 연구

  • 박근민;이재영;오병택;최상일
    • 한국지하수토양환경학회:학술대회논문집
    • /
    • 한국지하수토양환경학회 2006년도 총회 및 춘계학술발표회
    • /
    • pp.402-406
    • /
    • 2006
  • The physical and chemical characteristics of ALC were analyzed and showed 2.2 of specific gravity and 9.05 of pH. The results of leaching tests with standard method for soil and waste indicated heavy metals(Cu, Cd, Pb, $Cr^{6+}$) were under maximum concentration level. The anaerobic digestion sludge was attached in the surface of ALC within 90 hours. As the results of batch test, pH of the ALC and Bio-ALC were decreased from initial pH of ALC to 8.7 and 7.8 respectively Also, the concentration of heavy metals was rapidly eliminated in the solution with the batch test. The result of column experiment indicates that the removal efficiency of ALC was showed 66% of T-P, 60% of T-N, and 67% of CODcr. Also, removal efficiency of Bio-ALC was slightly higher than that of ALC in T-N (64%) and CODcr (74%).

  • PDF

국내외 바이오 플라스틱의 연구개발, 제품화 및 시장 동향 (International Trends in Development, Commercialization and Market of Bio-Plastics)

  • 유영선;오유성;홍승회;최성욱
    • 청정기술
    • /
    • 제21권3호
    • /
    • pp.141-152
    • /
    • 2015
  • 환경문제가 대두되면서 이미 선진국의 바이오 플라스틱 공급업체들은 소비자의 관심과 재활용 규제가 친환경 포장재 등의 수요를 불러일으킬 것으로 전망하였다. 이러한 수요에 대응하기 위해 옥수수와 같은 식물체를 활용해 만든 여러 형태의 바이오 플라스틱을 출시해 왔으며, 국내 업체들에서도 점차 이에 대한 관심을 높여가고 있다. 점차 강화되고 있는 폐기물 부담금과 불안정한 국제 유가를 고려할 때, 바이오 플라스틱은 소비자들의 친환경 제품에 대한 관심과 연결되어 국내 플라스틱 산업의 새로운 활로가 될 것으로 기대된다. 이를 위해서는 비교적 초기단계에 있는 국내 친환경 바이오 플라스틱 기술에 대해 기업과 대학에서 활발한 연구가 이루어져야 할 것으로 보인다. 빠르면 2-3년 내에 기존 생분해 플라스틱 이외에 바이오 베이스 및 산화생분해 플라스틱을 주원료로 한 식품용기 및 포장재, 산업용품, 농업용품, 일회용품, 산업용랩, 스트래치 필름 및 각종 상품용 제품이 실용화되고, 장기적으로는 생체 의료용제 등과 같은 첨단의 고부가 생명 공학기술을 응용한 다양한 종류의 환경 친화 제품의 출시가 예상되며, 향후 바이오 플라스틱 산업은 시장 잠재력과 성장성이 무한한 환경 관련 사업으로 평가된다.

우슬(Achyranthes Root) 탕제 후 얻어진 폐한약재 부산물의 열분해 (Pyrolysis of Waste Oriental Medicine Byproduct Obtained from the Decoction Process of Achyranthes Root)

  • 박지희;정재훈;이지영;김영민;박영권
    • 공업화학
    • /
    • 제29권4호
    • /
    • pp.474-478
    • /
    • 2018
  • Thermal decomposition of waste Achyranthes Root (WAR) emitted from its decoction process was investigated using a TG analyzer and a fixed-bed reactor. The WAR had the larger C and fixed carbon content than fresh AR (FAR) due to the extraction of hemicelluloses from FAR during decoction process. Thermogravimetric (TG) analysis results also revealed the elimination of hemicellulose by its decoction. Relatively high contents of the cellulose and lignin made high contents of their typical pyrolyzates, such as acids, ketones, furans, and phenols, in the pyrolysis of WAR using the fixed-bed reactor. The increase of pyrolysis temperature from 400 to $500^{\circ}C$ increased yields of oil and gas due to the more effective cracking efficiency of WAR at a higher temperature. The chemical composition of product oil was also changed by applying the higher pyrolysis temperature, which increased the selectivity to furans and phenols.

메탄올-글리세린을 이용한 재흡수 열펌프의 열역학적 모사 연구 (A Study on a Resorption Beat Pump Using Methanol-Glycerine)

  • 민병훈
    • 에너지공학
    • /
    • 제15권4호
    • /
    • pp.284-290
    • /
    • 2006
  • 냉 난방 수요에서 일어나는 환경오염의 최소화와 화석연료 소비를 감소시키기 위해서 에너지 회수를 개선시키는 것은 필수적이다. 이러한 점에서 흡수식 열펌프기술은 에너지 절약을 위해서 많은 가능성을 가지고 있다. 흡수식 열펌프는 에너지를 주입하지 않고 폐열의 이용을 높일 수 있는 방법이다. 본 연구에서는 에너지 회수를 위한 재흡수 열펌프 연군를 메탄올-글리세린을 이용하여 수행하였다. 이 물질의 열역학 데이터를 이용하여 재흡수 열펌프의 이론적 열효율 값을 각 기관의 조업 조건에 따라서 계산하였다. $70{\sim}80^{\circ}C$의 산업 폐열 온도를 가지고 $40{\sim}50^{\circ}C$ 승온 시킬 때 열효율 값 0.4 이상을 얻을 수 있었다.

Use of Waste Woods for Developing Environment-friendly Shock-absorbing Materials

  • Kim, Chul-Hwan;Song, Dae-Bin;Lee, Young-Min;Kim, Jae-Ok;Kim, Gyeong-Yun;Shin, Tae-Gi;Park, Chong-Yawl
    • 한국펄프종이공학회:학술대회논문집
    • /
    • 한국펄프종이공학회 2006년도 PAN PACIFIC CONFERENCE vol.2
    • /
    • pp.475-478
    • /
    • 2006
  • Environment-friendly shock-absorbing materials were made using a vacuum forming method from waste wood collected from local mountains in Korea. The waste wood was pulped by thermomechanical pulping. The TMP cushions showed superior shock-absorbing properties with lower elastic moduli compared to EPS and pulp mold. Even though the TMP cushions made using different suction times had many free voids in their inner fiber structure, their apparent densities were a little higher than EPS and much lower than pulp mold. The addition of cationic starch improved the elastic modulus of the TMP cushions without increasing the apparent density, which was different from surface sizing with starch. The porosity of the TMP cushions was a little greater than EPS and much less than pulp mold. Finally, the TMP cushions have great potential to endure external impacts occurring during goods distribution.

  • PDF

과일폐기물을 이용한 바이오에탄올 생산에 관한 연구 (A Study on Bio-ethanol Production from Fruit Wastes)

  • 박세준;도윤호;최정식;윤영훈;차인수
    • 한국수소및신에너지학회논문집
    • /
    • 제20권2호
    • /
    • pp.142-150
    • /
    • 2009
  • This paper presents bio-ethanol production from fruit wastes as it possibly alternate fossil fuel in the future. To illustrate the component ratio in exocarps of fruit wastes such as pears, apples, and persimmons, the amount of moisture, lignin, $\alpha$, $\beta$, $\gamma$-cellulose, and ash content were respectively examined by the ingredient analysis. Also, the amount of the glucose obtained from the enzyme hydrolysis using the axocarps was investigated. It was found in our results that the energy efficient process requires different temperature conditions for the saccharification step($50^{\circ}C$ and the fermentation step($30^{\circ}C$ in ethanol synthesis.