http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
미생물에 의한 탈질 과정 동안의 비소 동시 산화 특성 평가
오설란,김동훈,문희선 한국지하수토양환경학회 2019 지하수토양환경 Vol.24 No.4
Recently, groundwater contamination by mixed occurrence of arsenic (As) and nitrate (NO3−) has been a seriousenvironmental issue all around world. In this study, we investigated the microbial As(III) oxidation characteristic underdenitrification process to examine the feasibility of the microbial consortia in wetland sediment to simultaneously treatthese two contaminants. The detail objectives of this study were to investigate the effects of NO3− on the oxidation ofAs(III) in anaerobic environments and observe the microbial community change during the As oxidation underdenitrification process. Results showed that the As(III) was completely and simultaneously oxidized to As(V) underdenitrification process, however, it occurred to a much less extent in the absence of sediment or NO3−. In addition, thesignificant increase of As(III) oxidation rate in the presence of NO3− suggested the potential of As oxidation underdenitrification by indigenous microorganisms in wetland sediment. Genera Pseudogulbenkiania, and Flavisolibacter wereidentified as predominant microbial species driving the redox process. Conclusively, this study can provide usefulinformation on As(III) oxidation under denitrifying environment and contribute to develop an effective technology forsimultaneous removal of As(III) and NO3− in groundwater.
계절에 따른 습지 내 저서성대형무척추동물 모니터링을 통한 지하수의존생태계 특성 평가
정찬영,최지웅,문희선,김동훈,문상호,오용화,한지연,오설란,김용철,Jeong, Chanyoung,Choi, Ji-Woong,Moon, Hee Sun,Kim, Dong-Hun,Moon, Sang-Ho,O, Yong-Hwa,Han, Ji Yeon,Oh, Seolran,Kim, Yongcheol 한국지하수토양환경학회 2021 지하수토양환경 Vol.26 No.6
Wetlands are one of the most representative groundwater dependent ecosystems(GDEs) that require access to groundwater on a permanent or intermittent basis to maintain their biological communities and ecological processes. In this study, the seasonal characteristics of the GDEs in Baekseok Reservoir Wetland were evaluated through the monitoring of the temporal and spatial community of benthic macroinvertebrates in the wetland. The appearance of benthic macroinvertebrates appearance was changed seasonally depending on environmental factors such temperature, precipitation and water level for their habitat and it also showed the clear spatial difference in the wetland. The scores of Diversity index(H'), Richness Index (R1) and the Ecological score of benthic macroinvertebrates (TESB/AESB) were relatively high at St.3 and 4(i.e., north area) where groundwater inflows into wetland(i.e., high <sup>222</sup>Rn conc.). The statistical analysis (ANOVA test and PCA) investigated the correlation among the benthic macroinvertebrates' community, groundwater level, wetland water level and water quality. The results showed that the community of benthic macroinvertebrates at St. 3 and 4 in Baekseok Reservoir Wetlands was spatially dependent on groundwater level and groundwater inflow. The characterization and assessment of GDEs requires understanding the hydrological, biogeochemical and biological process and this study will provide information for characterization and assessment of GDEs.