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GIS 공간내삽법을 활용한 PM<sub>2.5</sub> 분포 특성 분석 - 창원시 도시지역을 대상으로 -
문한솔 ( Han-sol Mun ),송봉근 ( Bong-geun Song ),서경호 ( Kyeong-ho Seo ),김태형 ( Tae-hyeung Kim ),박경훈 ( Kyung-hun Park ) 한국지리정보학회 2020 한국지리정보학회지 Vol.23 No.2
The purpose of this study was to analyze the distribution characteristics of spatial and temporal PM<sub>2.5</sub> in urban areas of Changwon-si, and to identify the causes of PM<sub>2.5</sub> by comparing the characteristics of land-use, and to suggest the direction of reduction measures. As the basic data, the every hour average from September 2017 to August 2018 of Airpro data, which has measurement points in kindergartens, elementary schools, and some middle and high schools in Changwon-si was used. Also, by using IDW method among spatial interpolation methods of GIS, monthly and time-slot distribution maps were constructed, and based on this, spatial and temporal PM<sub>2.5</sub> distribution characteristics were confirmed. First, to verify the accuracy of the Airpro data, the correlation with AirKorea data managed by the Ministry of Environment was confirmed. As a result of the analysis, R<sup>2</sup> was 0.75~0.86, showing a very high correlation and the data was judged that it was suitable for the study. In the monthly analysis, January was the highest year, and August was the lowest. As a result of analysis by time-slot, The clock-in time at 06-09 was the highest, and the activity time at 09-18 was the lowest. By administrative district, Sangnam-dong, Happo-dong, and Myeonggok-dong were the most severe regions of PM<sub>2.5</sub> and Hoeseong-dong was the lowest. As a result of analyzing the land-use characteristics by administrative area, it was confirmed that the ratio of traffic area and commercial area is high in the serious area of PM<sub>2.5</sub>. In conclusion, the results of this study will be used as basic data to grasp the characteristics of PM2.5 distribution in Changwon-si. Also, it is thought that the severe regions and the direction of establishing reduction measures derived from this study can be used to prepare more effective policies than before.
미세조류를 이용한 바이오 에탄올 생산 연구에 관한 고찰
박종관(Jongkwan Park),문한솔(Hansol Mun),박민주(Min-Ju Park),장희원(Heewon Jang),정대운(Dae-Woon Jeong) 대한환경공학회 2020 대한환경공학회지 Vol.42 No.3
목적 : 바이오 에탄올은 식물체로부터 유래하고, 추가적인 시설 투자없이 기존의 에너지 인프라를 이용할 수 있다는 점에서 중요한 에너지원으로 알려져 있다. 또한 연소시에도 저농도의 오염물질을 매출하는 친환경 에너지 자원이다. 특히, 미세조류는 빠르게 성장하고 바이오에너지로 변환할 때 상대적으로 쉬운 전처리를 할 수 있다는 점에서 효과적인 바이오 에탄올을 위한 생물자원으로 보고되었다. 본 총설에서는 미세조류를 이용한 바이오 에탄올 생산에 대한 일반적인 내용과 다양한 생산 방식, 그리고 바이오 에탄올에 대한 경제적 전망에 대한 정보를 제공하는 것을 목적으로 한다. 방법 : 최근에 게제된 논문을 수집하고 분석하였으며, 연구 내용은 현재 바이오 에탄올과 미세조류 연구에 관한 소개, 바이오 에탄올 생산에 관한 일반적인 정보, 바이오 에탄올 생산 공정, 경제적 실효성, 마지막으로 한계점 및 앞으로의 전망의 순서로 구성되어 있다. 결과 및 토의 : 높은 수율의 바이오 에탄올을 얻기 위해서 적절한 미세조류의 선택과 배양 방법이 중요하다. 그리고 바이오 에탄올 생산을 위한 미세조류의 물리적, 화학적, 생물학적 전처리 방법과 다양한 생산 공정에 대한 장단점을 소개하였다. 결론 : 미세조류는 빠른 성장 주기, 높은 탄수화물 함량, 상대적으로 손쉬운 전처리 방법으로 인해 바이오 에탄올 생산을 위한 에너지원으로 기대가 된다. 그러나 경제성 향상을 위해 조류의 배양방법, 전처리 기술, 높은 수율의 바이오 에탄올을 생산하기 위한 적절한 발효 단계 등에 대한 추가적인 연구가 필요하다. Objectives : Bioethanol is known as an important energy source that comes from plants, uses existing energy infrastructure without additional investment, and emits a low concentration of pollutants during combustion as eco-friendly renewable energy. Microalgae is reported as an effective material for producing bioethanol because of rapid biomass growth and relatively easy pretreatment steps. The objectives of this study are 1) to introduce general information of bioethanol production, 2) to show various processes for bioethanol production from microalgae, and 3) to provide an economic perspective of bioethanol. Methods : Recent published peer-reviewed papers were collected and analyzed. The contents follow the order: 1) introduction, 2) general information about microalgae for bioethanol production, 3) bioethanol producing processes, 4) economic feasibility, and 5) conclusion. Results and Discussion : The selection of the microalgae species and growing method are important to obtain high yield bioethanol. Physical, chemical, biological pretreatment was introduced. Also, comparison of the bioethanol producing processes was provided. Conclusions : Bioethanol production from microalgae is a promising energy source because microalgae have lots of advantages as effective biomass such as rapid growth, high polysaccharide contents, and easy preparing step for bioethanol production. However, it has some limitations that need to overcome. Algae growing method, pretreatment technology, and fermentation steps still require advanced technology, which can improve economic feasibility.
GIS 기반 노인인구 분포지역의 공간적 특성과 폭염의 관계 분석 - 창원시를 대상으로 -
송봉근 ( Bong-geun Song ),박경훈 ( Kyung-hun Park ),김경아 ( Gyeong-ah Kim ),김성현 ( Seoung-hyeon Kim ),박건웅 ( Geon-ung Park ),문한솔 ( Han-sol Mun ) 한국지리정보학회 2020 한국지리정보학회지 Vol.23 No.3
This study analyzed the relationship between spatial characteristics and heat waves in the distribution area of the elderly population in Changwon, Gyeongsangnam-do. For analysis, the Statistics Census data, the Ministry of Environment land cover, Landsat 8 surface temperature, and the Meteorological Agency's heat wave days data were used. The spatial characteristics of the distribution of the elderly population was classified into 5 types through K-mean cluster analysis considering the land use types. The characteristics of the elderly population by spatial type were higher in the urbanized type(cluster-3), but the proportion of the elderly population was higher in the agricultural and forest area types(cluster-1, cluster-2). In the characteristics of the surface temperature and the heat wave days, the surface temperature was the highest in the urban area, but heat wave days were the highest in the rural area. As a result of analyzing the heat wave characteristics according to the spatial type of the distribution area of elderly population, cluster-2 with the largest area in agricultural areas was highest at 15.95 days, and cluster-3 with a large area in urbanized types was the lowest at 9.41 days and 9.18 days. In other words, the elderly population living in rural areas is more exposed to heat waves than the elderly population living in urban areas, and the damage is expected to increase. The results of this study could be used as basic data to prepare various policy measures for effective management and prevention of vulnerable areas in summer.