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알루미늄 드로스 첨가를 통한 경량화벽돌의 물리적 특성평가
손영금,이우근 한국폐기물자원순환학회 2013 한국폐기물자원순환학회지 Vol.30 No.5
In this work, lightweight brick was prepared from aluminum dross, MS and MBA. Aluminum dross is discharged as by-product through the process of aluminum smelting. It can be used as foaming agent, because it produces hydrogen gas due to the reaction with alkali activator. In this study, the specific gravity and compressive strength of prepared brick was discussed with the addition of aluminum dross. Compressive strength, flexural strength and specific gravity was 36 MPa, 2.6 MPa and 1.48 at mixing ratio of 0.9wt% aluminum dross, respectively. The physical property of brick was debased with the addition of aluminum dross. Because the pore size was bigger in accordance with the addition of aluminum dross.
손영금,이우근 한국폐기물자원순환학회 2013 한국폐기물자원순환학회지 Vol.30 No.8
Municipal solid wastes incinerator (MSWI) bottom ash and melting slag are used to prepare external panel for increasingthe recycling rate of them in this study. In case of external panel, the most important property is flexural strength. Becauseit is easily distorted by external force. Wasted glass fiber (below WGF) is used to increase the flexural strength of externalpanel. Flexural strength of prepared panel was 14.6MPa of the mixing ratio of 3.0wt% WGF. But compressive strengthwas decreased with the addition of WGF. Because L/S ratio has to be increased to enhance the workability at high additionamount of WGF. High liquid content hinders geopolymer formation. But compressive strength (about 20MPa) was notlow at this condition.
QGIS를 이용한 경기도내 토양오염원의 중점관리 지점 선정
손영금(Yeong-Geum Son),김지영(Ji-Young Kim),박진호(Jin-Ho Park),임흥빈(Heung-Bin Im),김종수(Jong-Su Kim) 한국환경보건학회 2020 한국환경보건학회지 Vol.46 No.1
Object: The purpose of this study was to select priority points for soil management using the location of groundwater and to suggest this method for soil contamination surveys. Method: Groundwater impact range was set to an area of 100 to 500 meters from the center point of agricultural groundwater wells. Data on industrial complex and factory areas, areas of stored or used ores and scrap metals, areas associated with waste and recycling, and traffic-related facilities areas were collected and checked for whether they fall within the groundwater impact range. Longitude and latitude coordinates of these data were mapped on the groundwater impact range using QGIS (Quantum Geographic Information System). Results: Considering the groundwater impact range, the points were selected as follows: 589 points were selected from 6,811 factories and 259 points were selected from 1,511 recycling business points. Traffic-related facility areas were divided between gas stations, bus depots, and auto mechanics. Thirty-four points were selected from 149 bus depots and 573 points were selected from 6,013 auto mechanic points. From the 2,409 gas station points, 323 were selected. Conclusion: Contaminated soil influences groundwater and crops, which can harm human health. However, soil pollution is not easily identified, so it is difficult to determine what has occurred. Pollution must be prevented beforehand and contaminated soil found. By selecting and investigating soil contamination survey points in consideration of the location of groundwater wells, we can safely manage water resources by preventing groundwater contamination in advance.
손영금(Yeong-Geum Son),임흥빈(Heung-Bin Im),이강혁(Kang-Hyuck Lee),김진길(Jin-Guil Kim),임윤정(Yun-Jung Im),최정인(Jeong-In Choi),이호정(Ho-Jung Lee),오조교(Jo-Gyo Oh) 한국환경보건학회 2017 한국환경보건학회지 Vol.43 No.5
The objective of this study is to evaluate and analyze Sincheon basin water environment system. The data were collected from 2010 August to 2016 December including BOD, SS, T-N, T-P. The results were as followed. As the result of comparing the amount of BOD generated by pollution sources in the Sincheon water system, industrial was the highest at 33,259.4 kg/day. In comparison with the tributary, it was estimated that Dong-Du water system reveals the highest level of BOD in the industry. Population and livestock was high in CheongDam and Sang-Pae water system. With the inflow stream of Hyo-Chon, Suk-Woo and Sang-Pae, the pollution degree of BOD and T-N level of Sincheon increased and pollution degree of tributary was higher than that of Sincheon’s main stream. The main reason of pollutant of Suk-Woo was from untreated wastewater, and it influenced downstream of Suk-Woo. Hyo-Chon stream satisfy the water quality standard, but Zn was designated as a Monitoring contaminants, was high as 14.670 mg/L (standard 0.02~2.45mg/L)because of textile wastewater. And Sang-Pae stream was polluted by livestock wastewater of livestock farms as a nonpoint source.