[논문]통합 하이브리드시스템의 압력강하 거동 및 바이오필터 담체의 미생물 population 분포

이은주; 임광희

doi:10.9713/kcer.2022.60.1.116

[국내논문] 통합 하이브리드시스템의 압력강하 거동 및 바이오필터 담체의 미생물 population 분포
Pressure Drop of Integrated Hybrid System and Microbe-population Distribution of Biofilter-media 원문보기

Korean chemical engineering research = 화학공학, v.60 no.1, 2022년, pp.116 - 124

초록
AI-Helper

교대로 운전되는 광촉매반응기 공정, 및 바이오필터 공정(전통적 바이오필터(L 반응기)와 두 개의 유닛(unit)을 가지는 개선된 바이오필터시스템(R 반응기))로 구성된 통합처리시스템에서, 에탄올과 황화수소를 동시 함유한 폐가스 처리를 수행하는데 발생하는 공정 당 압력강하(△p)와 바이오필터 공정의 미생물 population 분포를 관찰하였다. 교대로 운전되는 광촉매 반응기의 △p는, 바이오필터의 △p와 비교할 때에 무시할 정도로 작게 관찰되었다. L 반응기의 △p는, 통합처리시스템의 운전 중에 계속 증가하여 4.0~5.0 mmH₂O (i.e., 5.0~6.25 mmH₂O/m)로 증가하였다. 한편 R 반응기의 경우에서는 L 반응기의 △p의 약 16~20% 이하인 작은 △p를 나타내었다. 본 연구에서 적용한 공극율이 큰 폐타이어 담체 등의 바이오필터 담체 및 R 반응기 설계의 적용이, 목재 칩(wood chip)과 목재 바크(wood bark)의 50 대 50인 혼합물을 바이오필터 담체로 사용한 전통적 바이오필터의 보고된 압력강하 값의 각각 37~50%와 40~53% 만큼 압력강하 저감에 공헌하였다고 분석되었다. 또한 본 연구의 R 반응기 운전에서 압력강하 값이, 공극율이 큰 화산석(scoria)과 compost를 75 대 25로 혼합한 복합 담체를 충전한 전통적 바이오필터의 보고된 압력강하 값보다 약 80%만큼 저감된 결과는 주로 R 반응기 설계의 적용에 기인하였다고 해석되었다. 한편, 통합처리시스템에서 바이오필터 담체의 microbial population 분포로서 L 반응기 및 R 반응기의 담체 내 미생물 콜로니 수 비교에서는 L 반응기가 제일 밑단에서 다른 윗 단의 콜로니 수보다 거의 두 배로 증가하였으나; R 반응기의 경우는 R_dn 반응기와 R_up 반응기 각각의 상단과 하단에서 고르게 분포하였고 L 반응기보다 콜로니 수가 평균적으로 약 50% 정도 더 컸다. 이러한 현상은 R 반응기의 상단과 하단의 함수율이 50-55%의 고른 분포를 보인 것에 기인하였다. 따라서 개선된 바이오필터시스템이 전통적 바이오필터보다 △p와 미생물 population 분포에서 더욱 우수한 특성을 보였다.

Abstract ▼ AI-Helper

In this study, waste air containing ethanol and hydrogen sulfide, was treated by an integrated hybrid system composed of two alternatively-operating UV/photocatalytic reactor-process and biofilter processes of a biofilter system having two units with an improved design (R reactor) and a conventional biofilter (L reactor). Both a pressure drop (△p) per unit process of the integrated hybrid system and a microbe-population-distribution of each biofilter process were observed. The △p of the UV/photocatalytic reactor process turned out very negligible. The △p of the L reactor was observed to increase continuously to 4.0~5.0 mmH2O (i.e., 5.0~6.25 mmH2O/m). In case of R reactor, its △p showed the one below ca. 16~20% of the △p of the L reactor. Adopting such microbes-carrying biofilter media with high porosity as waste-tire crumb media, and the improved biofilter design, contributed to △p of this study, reduced by ca. 37~50% and 40~53%, respectively, from the reported △p of conventional biofilter packed with biofilter media of the mixture (50:50) of wood chip and wood bark. In addition, the △p of R reactor in this study, reduced by ca. 80% from the reported △p of conventional biofilter packed with biofilter media of the mixture (75:25) of scoria with high porosity and compost, was mainly attributed to adopting the improved biofilter design. On the other hand, in case of L reactor, the CFU counts in its lowest column was analyzed double as much as those in any other columns. However, in case of R reactor, its CFU counts were bigger by 50% than the one of L reactor and its microbes were evenly distributed at its higher and lower columns of Rdn reactor and Rup reactor. This phenomena was attributed to an even moisture distribution of 50~55% of R reactor at its higher and lower columns. Therefore, R reactor showed superb characteristics in terms of both △p and microbe-population-distribution, compared to L reactor.

Keyword

표/그림 (11)

그림 Fig. 1. Schematic diagram of integrated hybrid waste-air treatment system.
그림 Fig. 2. Schematic diagram of alternately operating-two annular UV/photo-catalytic reactor integrated with a conventional biofilter (L reactor) and a biofilter with an improved design(R reactors), fed with synthetic contaminated air containing hydrogen sulfide and ethanol.
그림 Fig. 3. (a) Biofilter system with an improved design (R reactor). 1. R_up1 (lower column ① of upper biofilter), 2. R_up2 (upper column ② of upper biofilter), 3. R_dn1 (upper column ③ of lower biofilter), 4. R_dn2 (lower column ④ of lower biofilter), 5. Biofilter system with improved design, 6. Microbes-carrying-media, 7. Waste air fed to a biofilter(solid line), 8. Treated waste air fed bottom-up, 9. Treated waste air fed top-down, 10. Treated waste air upon feeding direction being reversed, denoted as “T”(dotted line), *ⓟ denotes a pressure gauge. (b) Conventional biofilter (L reactor): 1. L₁ (1st column ① of a biofilter), 2. L₂ (2nd column ② of a biofilter), 3. L₃ (3rd column ③ of a biofilter), 4. L₄ (4th column ④ of a biofilter), 6. Microbes-carrying-media, 7. Waste air fed to a biofilter, 9. Treated waste air fed top-down, *ⓟ denotes a pressure gauge.
표 Table 1. Operating-order of integrated hybrid system for waste-air treatment
표 Table 2. Operating conditions of integerated hybrid system for wate-air treatment
표 Table 3. Composition of Plate Count Agar(PCA) medium
그림 Fig. 4. Distribution of moisture (%) of biofiter-media at various effective heights of biofilters (L and R reactors).
그림 Fig. 5. Comparison of the number of colony obtained with dilution-multiplying factor of 10⁴ from L reactor at the end of HB3T stage (WT: waste tire-crumb media laden with microbes; AC: activated carbon media laden with microbes).
그림 Fig. 6. Comparison of the number of colony obtained with dilution-multiplying factor of 10⁴ from R_up and R_dn reactor at the end of HB3T stage (WT: waste tire-crumb media laden with microbes; AC: activated carbon media laden with microbes).
그림 Fig. 7. SEM (Hitachi, S-4300) image of the surface of microbes-carrying media from R reactor.
그림 Fig. 8. Transient behavior of pressure drops of photocatalytic reactor (P reactor) and biofilters [L reactor (conventional biofilter) and R reactor (biofilter system with a improved design) composed of R_dn reactor and R_up reactor as shown in Fig. 3] according to the operational order of integrated hybrid system treating waste air containing ethanol and hydrogen sulfide.

참고문헌 (29)

Ndegwa, P. M., Hristov, A. N., Arogo, J. and Sheffield, R. E., "A Review of Ammonia Emission Mitigation Techniques for Concentrated Animal Feeding Operations," Biosystems Engineering, 100(4), 453-469(2008).

상세보기
Sun, Y., Quan, X., Chen, J., Yang, F., Xue, D., Liu, Y. and Yang, Z., "Toluene Vapour Degradation and Microbial Community in Biofilter at Various Moisture Content," Process Biochemistry, 38(1), 109-113(2002).

상세보기
Baltrenas, P., Janusevicius, T. and Kleiza, J., "Effect of Packing Material Composition on the Aerodynamic Processes in a Wavy Lamellar Plate-Type Biofilter," Processes, 9(4), 625(2021).

상세보기
Yang, C. P., Suidan, M. T., Zu, X. Q. and Kim, B. J., "BiomassAccumulation Patterns for Removing Volatile Organic Compounds in Rotating Drum Biofilters," Water Sci. Tech., 48, 89-96 (2003).
Alonso, C., Suidan, M. T., Kim, B. R. and Kim, B. J., "DynamicMathematical Model for the Biodegradation of VOCs in a Biofilter: Biomass Accumulation Study," Environ. Sci. Technol., 2, 3118-3123(1998).
Okkerse, W. J. H., Ottengraf, S. P. P., Osinga-Kuipers, B. and Okkerse, M., "Biomass Accumulation and Cogging in Biotrickling Filters for Waste Gas Treatment," Biotechnol. Bioeng., 63, 418-430(1999).

상세보기
Smith, F. L., Sorial, G. A. Suidan, M. T., Breen, A. W. and Bismas, P., "Development of Two Biomass Control Strategies for Extended, Stable Operation of Highly Efficient Biofilters withHigh Toluene Loadings," Environ. Sci. Technol., 30, 1744-1751(1996).

상세보기
Cox, H. H. J. and Deshusses, M. A., "Biomass Control in Waste Air Biotrickling Filters by Protozoan Predation," J. Eng. Appl. Sci., 62, 216-224(1999).
Cox, H. H. J. and Deshusses, M. A., "Chemical Removal pf Biomass from Waste Air Biotrickling Filters: Screening Chemicals of Potential Interest," Water Res., 33, 2383-2391(1999).

상세보기
Moe, W. M. and Irvine, R. L., "Polyurethane Sponge Medium for Biofiltration, II: Operation and Performance," J. Environ. Eng., 126, 826-832(2000).

상세보기
Kenes, C. and Veiga, M. C., "Inert Filter Media for the Biofiltration of Waste Gas-characteristics and Biomass Control," Rev. Environ. Sci. Biotechnol., 1, 201-214(2002).

상세보기
Yang, C. P., Suidan, M. T., Zu, X. Q. and Kim, B. J., "Comparison of Single-layer and Multi-layer Rotating Drum Biofiltersfor VOC Removal," Environ. Prog., 22, 87-94(2003).

상세보기
Dorado, A. D., Baeza, J. A., Lafuente, J., Gabriel, D. and Gamisans, X., "Biomass Accumulation in Biofilter Treating Toluene atHigh Loads-Part 1: Experimental Performance from Inoculationto Clogging," Chem. Eng. J., 209, 661-669 (2012).

상세보기
Chen, L. and Hoff, S. J., "A Two-stage Wood Chip-based Biofilter System to Mitigate Odors from a Deep-pit Swine Building," Applied Engineering in Agriculture, 28(6), 893-901(2012).

상세보기
Kristensen, E. F., Kofman, P. D. and Jensen, P. D., "Counter Pressure on Ventilation of Different Types of Wood Chip and Chunkwood," Biomass and Bioenergy, 25(4), 399-408(2003).

상세보기
Shareefdeen, Z., "Hydrogen Sulfide (H 2 S) Removal Using Schist Packings in Industrial Biofilter Applications," Korean Journal of Chemical Engineering, 32(1), 15-19(2015).

상세보기
Lee E. J. and Lim, K.-H., "A Dynamic Adsorption Model for the Gas-phase Biofilters Treating Ethanol: Prediction and Validation," Korean Journal of Chemical Engineering, 29(10), 1373-1381(2012).

상세보기
Swanson, W. J. and Loehr, R. C., "Biofiltration: Fundamentals, Design and Operations Principles, and Applications," Journal of Environmental Engineering, 123(6), 538-546(1997).

상세보기
Williams, T. O. and Miller, F. C., "Odor Control Using Biofilters: Part 1. This Overview of Basic Design and Operating Criteria Explains How Biofilters Can be Used More Efficiently to Control Odors Emanating from Composting Facilities," BioCycle, 33, 72-77(1992).
Baquerizo, G., Maestre, J. P., Sakuma, T., Deshusses, M. A., Gamisans, X., Gabriel, D. and Lafuente, J., "A Detailed Model of a Biofilter for Ammonia Removal: Model Parameters Analysis and Model Validation," Chemical Engineering Journal, 113(2-3), 205-214(2005).

상세보기
Chen, Y.-X., Yin, J. and Wang, K.-X., "Long-term Operation of Biofilters for Biological Removal of Ammonia. Chemosphere," 58(8), 1023-1030(2005).

상세보기
Chen, L. and Hoff, S. J., "Mitigating Odors from Agricultural Facilities: a Review of Literature Concerning Biofilters," Applied Engineering in Agriculture, 25(5), 751-766(2009).

상세보기
Grubecki, I., "Airflow Versus Pressure Drop for a Mixture of Bulk Wood Chips and Bark at Different Moisture Contents," Biosystems Engineering, 139, 100-110(2015).

상세보기
Amin, M. M., Rahimi, A., Bina, B., Heidari, M. and Moghadam, "Performance Evaluation of a Scoria-compost Biofilter Treating Xylene Vapors," Journal of Environmental Health Science & Engineering, 12(1), 140(2014).

상세보기
Lee, E. J. and Lim, K.-H., "Biofilter Treatment of Waste Air Containing Malodor and VOC: 1. Pressure Drop and Microbepopulation Distribution of Biofilter with Improved Design," Korean Chem. Eng. Res., 51(1), 127-135(2013).

원문보기 상세보기
Lim, K.-H. and Lee, E. J., "Novel Process System Composed of UV(or VIS-)/photo-catalytic Reactor Washable During its Operation and Robust Biofilter System to Treat Waste Air Containing Malodorous and Volatile Organic Compounds," Korean Patent No. 10-0942147(2010).
Lee, E. J. and Lim, K.-H., "Time-dependent Behavior of Waste-air Treatment Using Integrated Hybrid System," Korean Chem. Eng. Res., 60(1), 100-115(2022).
Lee, E. J. and Lim, K.-H., "Performance of Waste-air Treating System Composed of Two Alternatively-operating UV/photo-catalytic Reactors and Evaluation of Its Characteristics," Korean Chem. Eng. Research, 59(4), 574-583(2021).

원문보기 상세보기
Lee, E. J., Jung, C. H. and Lim, K.-H., "Characterization of Repeated Deactivation and Subsequent Re-activation of Photo-catalyst Used in Two Alternatively-operating UV/photocatalytic Reactors of Waste-air Treating System," Korean Chem. Eng. Research, 59(4), 584-595(2021).

원문보기 상세보기

저자의 다른 논문 :

활용도 분석정보

상세보기

다운로드

내보내기

활용도 Top5 논문

해당 논문의 주제분야에서 활용도가 높은 상위 5개 콘텐츠를 보여줍니다.
더보기 버튼을 클릭하시면 더 많은 관련자료를 살펴볼 수 있습니다.

표제어: PCR

동의어: Packet Collision Rate

용어 설명 출처 목록 (6)

용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증