• 제목/요약/키워드: Anaerobic biodegradation

검색결과 67건 처리시간 0.034초

Kraft Lignin Biodegradation by Dysgonomonas sp. WJDL-Y1, a New Anaerobic Bacterial Strain Isolated from Sludge of a Pulp and Paper MillS

  • Duan, Jing;Liang, Jidong;Wang, Yiping;Du, Wenjing;Wang, Dongqi
    • Journal of Microbiology and Biotechnology
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    • 제26권10호
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    • pp.1765-1773
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    • 2016

  • Wastewater containing kraft lignin (KL) discharged from pulp and paper industries could cause serious environmental contamination. Appropriate effluent treatment is required to reduce the pollution. Investigations on anaerobic bacteria capable of degrading KL are beneficial to both lignin removal and biofuel regeneration from the effluent. In this paper, an anaerobic strain capable of degrading KL was isolated from the sludge of a pulp and paper mill and identified as Dysgonomonas sp. WJDL-Y1 by 16S rRNA analysis. Optimum conditions for KL degradation by strain WJDL-Y1 were obtained at initial pH of 6.8, C:N ratio of 6 and temperature of 33℃, based on statistical analyses by response surface methodology. For a 1.2 g/l KL solution, a COD removal rate of 20.7% concomitant with biomass increase of 17.6% was achieved after 4 days of incubation under the optimum conditions. After the treatment by strain WJDL-Y1, KL was modified and degraded.

  • https://doi.org/10.4014/jmb.1602.02014 인용 PDF KSCI KPUBS HTML

혐기성 회분식 실험을 통한 돈 및 우육의 분해 특성 (Biodegradation Characteristics of Swine and Cattle Using Anaerobic Batch Tests)

  • 김정광;최재민;김재윤;박준규;이채영
    • 유기물자원화
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    • 제22권1호
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    • pp.49-56
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    • 2014

  • 본 연구에서는 돈과 우육의 생분해도 특성을 평가하기 위하여 혐기성 회분식 실험을 수행하였다. 돈육의 경우 최대 메탄 발생속도와 초기 순응 시간은 각각 46.7 mL CH4/g VS.d 및 17.2 d로 나타났다. 우육의 경우에는 돈육에 비해 최대 메탄 발생 속도는 56.5%, 초기 순응 시간은 24% 낮게 나타났다. 축종별 혐기성 생분해도 차이는 상이하게 보이나 동일 축종 내 지방 함량 증가에 따라 최대 메탄 발생속도와 초기 순응 시간은 선형적으로 증가하였다. 또한, 지방 함량 증가에 따른 우육의 최대 메탄 발생속도 및 초기 순응 시간 상승률은 돈육에 비해 높게 나타났다.

  • https://doi.org/10.17137/Korrae.2014.22.1.49 인용 KSCI

호기적 조건에서 플라스틱 생분해에 영향을 미치는 도시 하수 오니의 성질 (Characteristics of Municipal Sewage Sludge Affecting the Biodegradation of a Plastic Material Under Aerobic Condition)

  • 서인선;이명천;김병홍;신평균
    • 한국미생물·생명공학회지
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    • 제22권4호
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    • pp.436-442
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    • 1994

  • The characteristics of activated sludge affecting the biodegradation of plastic materials under aerobic condition were studied using cellophane film as a model system. The activated sludges of site 3, which treat a mixture of domestic sewage and supernatant of septic tank, obtained from December 1993 to April 1994 showed similar biodegradation activities. Biodegradations for 28 days reached around 80%. Viable cell number of inoculums maintained at a level of 10$^{6}$~10$^{7}$ /ml. In this range, viable cell number showed no relationship with biodegradation activities. The activa- ted sludges of site 2, which treat a mixture of domestic sewage and anaerobic digest of nightsoil, obtained four times from April 1993 to April 1994 showed very different biodegradation activities ranged from 20% to 80% for 28 days. Inoculum size affects biodegradation significantly. One percent inoculum showed the best biodegradation among the inoculum sizes of 0.1, 1.0 and 10%. Ten percent inoculum revealed inhibitory effects on the biodegradation activity which can be greatly reduced by centrifugation and filtration. Filtration was better than centrifugation in reducing inhibitory effects.

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Evaluation of Biodegradation in an Aquifer Contaminated with Petroleum Hydrocarbon

  • 이지훈;이진용;이강근
    • 한국지하수토양환경학회:학술대회논문집
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    • 한국지하수토양환경학회 2001년도 총회 및 춘계학술발표회
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    • pp.120-123
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    • 2001

  • To evaluate the biodegradability of contaminants in an aquifer, computer modeling with RT3D model (Clement, 1997) was used. The RT3D model simulates the biodegradation of organic contaminants using a number of aerobic and anaerobic electron acceptors. The RT3D model was applied to a well-studied petroleum hydrocarbon plume in a shallow unconfined aquifer in Uiwang, Korea. The results of this study demonstrate tile importance of biodegradation processes in the monitored natural attenuation and in reducing contaminant concentrations in a shallow aquifer. The modeling results tell that the amount of electron acceptors is the key factor affecting biodegradation of TEX, the petroleum hydrocarbon contaminant in shallow groundwater

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슬러지-고정상 반응기에서 페놀폐수의 혐기성 처리에 관한 연구 (A Study on the Anaerobic Treatment of the Phenol Wastewater with the Sludge Blanket-Packed Bed Reactor)

  • 안재동;박동일;김재우;장인용
    • 한국환경보건학회지
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    • 제22권3호
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    • pp.72-80
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    • 1996

  • This study was carried to investigate the biodegradability of phenol wastewater in the sluge blanket-packed bed reactor(SBPBR). The reactor consisted of two regions. The lower region was a sludge blanket of 0.5 m height and the upper region was a packed-bed. The phenol and COD concentration of the effluent, the gas production and the composition of gas were measured to determine the performance of the anaerobic wastewater treatment system as the phenol concentration of the influent was increased from 600 to 1800 mg/l. Stable biodegradation of phenol wastewater could be achieved with the anaerobic treatment system from 600 to 1200 mg/l of the influent phenol concentration. But the SBPBR system was getting more serious at 1800 mg/l of influent phenol concentration. At the steady state of the influent phenol concentration of 600-1200 mg/l, the treatment performance showed the phenol removal efficiency of 94.5~96.3%, the COD removal efficiency of 93.3~96% and the gas production of 4.94~9.64 l/day.

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