• Title/Summary/Keyword: polluted soil

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Evaluating Ecotoxicity of Surface Water and Soil Adjacent to Abandoned Metal Mines with Daphnia magna and Eisenia fetida

  • Kim, Dae-Bok;Choi, Won-Suk;Hong, Young-Kyu;Kim, Soon-Oh;Lee, Sang-Woo;Lee, Byung-Tae;Lee, Sang-Hwan;Park, Mi-Jung;Kim, Sung-Chul
    • Korean Journal of Soil Science and Fertilizer
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    • v.49 no.1
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    • pp.81-86
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    • 2016
  • Heavy metal pollution in agricultural fields at the abandoned metal mines has been serious problems in Korea. In order to manage heavy metal pollution in surface water and soil, numerous remediation strategies have been established. Therefore, main purpose of this research was to examine feasibility of ecological toxicity assessment for establishing management strategy in heavy metal polluted agricultural fields. Heavy metal concentration in surface water and soil was monitored along with ecotoxicity experiment with Daphnia magna and Eisenia fetida. Result showed that high toxicity was observed in heavily polluted agricultural field with heavy metals. In case of mortality of Daphnia magna (85%) and Eisenia fetida (6.7%), the highest ratio was observed when heavy metal concentration in surface and soil was high. Calculated ecotoxicity index (EI) ranged 0.06-0.30 and the highest EI was observed in heavily polluted sites among 5 abandoned metal mines. Overall, ecological toxicity assessment is necessary to evaluate heavy metal pollution in agricultural fields near at the abandoned metal mines along with chemical concentration analysis.

Sulfate Reduction of Rice Paddy, Foreshore, and Reservoir Soil (논과 갯벌과 저수지 토양의 황산염 환원)

  • Kim, Min-Jeong;Park, Kyeong-Ryang
    • Journal of Life Science
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    • v.20 no.10
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    • pp.1468-1475
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    • 2010
  • Sulfate reduction rates (SRR) using $^{35}SO_4^{-2}$, sulfide producing rates (SPR) using gas chromatography, the number of sulfate reducing bacteria (SRB) using the most probable number (MPN) method, and soil components (moisture, ammonium, total nitrogen, total organic carbon, total carbon, total inorganic phosphorus, total phosphorus, and sulfate) using standard methods in the organic/conventional rice paddy soils, cleaned/polluted reservoir soils, and cleaned/polluted foreshore soils were studied with the change of seasons. The average SRR was more related to the number of SRB and soil components (especially nitrogen and phosphorus) than sulfate concentration. SRR was also recorded to be highest in October soil samples. However, SPR was higher in foreshore soils containing a high concentration sulfate than in fresh water soils, and it was also recorded to be higher in the polluted areas than in clean areas. From these results, we can conclude that the SRR and SPR of anaerobic environments were affected by the number of SRB, soil components and temperature.

A Study on the Degree of Pollution of Stream and Reservoir Sediments in Rural Area (농촌 중.소 하천 및 저수지 퇴적물의 오염현황)

  • Chang, Pyoung-Wuck;Woo, Chull-Woong;Kim, Seong-Pil
    • Journal of Korean Society of Rural Planning
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    • v.9 no.2 s.19
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    • pp.1-6
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    • 2003
  • This study was performed to investigate the degree of pollution of sediments of stream and reservoir in rural area. A series of field investigations were carried out for Kyongki-do area and chemical analysis were performed for sediment samples. It was found that some samples were heavily polluted with phenol and TPH and gave off a malodor. Soil Pollution Scores(SPSs) was determined for sediment samples. Some samples were classified to Soil Pollution Class(SPC) 2 and 3. For recycling and disposal of dredged sediments from stream and reservoirs, these polluted sediments should be carefully considered. In the environmental improvement operations of rural area, the degree of pollution of sediments of stream and reservoir are carefully investigated and suitable counterplan must be established.

Study of the Performance of a Dry Cleaning Method for Polluted Ballast Gravel of Railroad Fields (철도부지 오염도상자갈의 건식 정화 기술 성능 연구)

  • Cho, Youngmin;Park, Duckshin;Kwon, Tae-Soon;Lee, Jae-Young
    • Journal of the Korean Society for Railway
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    • v.18 no.6
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    • pp.552-557
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    • 2015
  • Ballast gravel in a railroad field is often polluted by grease and heavy metals. In this paper, the performances of a dry cleaning method for polluted ballast gravel in which pollutants on the gravel surface can be physically removed was extensively studied. A polluted ballast cleaning device able to shoot emery blasting media onto the surface using compressed air was prepared. Polluted ballast gravel was put into this device for cleaning, with the treatment time varied from 1 to 10 min. The cleaning efficiency of the total petroleum hydrocarbons and heavy metals were studied. The total petroleum hydrocarbon removal efficiency was 70-80% for gravels sampled from a locomotive waiting line, while it was 40-60% for gravels sampled from a turnout area. The heavy metal removal efficiency exceeded 90% for copper and lead, while it was 65-80% for nickel and zinc. This system was found to be effective for the remediation of polluted ballast gravels.

Pollution of Heavy Metals in Paddy Soils Around the Downstream Area of Abandoned Metal Mine and Efficiency of Reversed Soil Method as Its Remediation (폐금속광산 하부 농경지 토양의 중금속오염과 그 복구방법으로서 반전객토의 효율성)

  • Na, Choon-Ki;Lee, Mu-Seong;Chung, Jae-Il
    • Economic and Environmental Geology
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    • v.30 no.2
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    • pp.123-135
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    • 1997
  • In order to investigate the dispersion patterns and contamination level of heavy metals in the soil-ecosystem and to evaluate the efficiency of soil remediation by reversed soil method, soils and plants were collected from the Dongjin Au-Ag-Cu mine area and analysed for heavy metals. The dispersion patterns of heavy metals in soils and plants show that heavy metal pollutions caused by waste rump around Dongjin mine are mainly found in the vicinity of the waste rump and in the southward slanting of mine. Toxic metallic pollutants from the mine influence heavy metal contents in paddy soils in downstream area, and may be a potential sources of heavy metal pollution on crop plants. Soil samples collected from the remediated rice farming field by reversed method show similar levels of heavy metal content to those from the polluted rice farming field, but topsoil enrichment of heavy metals are not found. Heavy metal contents of the rice plants collected from remediated rice farming field are significantly lower than those from polluted rice farming field, and it suggests that the reversed soil method is effective for the reduction of bioavailability of heavy metals.

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A study on the degree of pollution of stream and reservoir sediments in rural area (농촌 중.소 하천 및 저수지 퇴적물의 오염현황)

  • Kim, Seong-Pil;Chang, Pyung-Wuck;Woo, Chull-Woong;Cha, Kyung-Seob
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 2001.10a
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    • pp.366-369
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    • 2001
  • This study was performed to investigate the degree of pollution of sediments of stream and reservoir in rural area. A series of site investigations were carried out for Kyongki-do area and chemical analysis were performed for sediment samples. It was found that some samples were heavily polluted with phenol and TPH and gave off a malodor. Soil Pollution Scores(SPSs) was determined for sediment samples. Some samples were classified to Soil Pollution Class(SPC) 2 and 3. For recycling and disposal of dredged sediments from stream and reservoirs, these polluted sediments should be carefully considered. A further study on the criterion of recycling/disposal of sediments and development of new Soil Pollution Index compatible for stream sediments is necessary in future.

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LONG TERM MONITORING OF HYDRARGYRUM POLLUTED SOIL USING PROJECTED IMAGE RECONSTRUCTION IN ELECTRICAL IMPEDANCE TOMOGRAPHY

  • Munkh-Erdne, Ts;Lee, Eunjung
    • Journal of the Korean Society for Industrial and Applied Mathematics
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    • v.18 no.2
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    • pp.167-180
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    • 2014
  • In this paper we consider a novel reconstruction method in electrical impedance tomography (EIT) and its application for monitoring and detecting a hydrargyrum (mercury) polluted soil near to the surface of underground. We use electrodes placed on the surface of land to collect the data which provides the relations of voltage and current map and to produce a projected image of interior conductivity distribution onto the surface of land. Here the projected image reconstruction method is used to monitor the pollution in soil underneath the ground without any destruction and any digging into a land.

Correlation between Phylogeny and Zn-Resistance in Methylobacterium Species Isolated from Non-Polluted Soil Environments

  • Kim, Hong-Ik;Kazunori Nakamura;Hiroshi Oyaizu
    • Proceedings of the Korean Society for Applied Microbiology Conference
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    • 2000.10a
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    • pp.118-124
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    • 2000
  • Zn-resistant Methylosobacterium strains were isolated from several non-polluted soil samples collected in all over Japan. Zn-resistant Methylosobacterium strains were predominantly detected in all soil samples and they were also characterized as a UV-tolerant bacteria. The MIC test revealed that the isolates have high zinc resistance in comparison with that of reference Methylosobacterium strains obtained from culture collections. The 16S rDNA-based phylogenetic analysis showed that all strains were divided into two clusters designated as cluster A and cluster B in the present study. All isolates were distributed only in the cluster A. The phylogenetic clustering also well coincided with the differences in the pattern of carbon source utilization.

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Effects of Heavy Metal Contents in Soil on the Growth of and their Uptake by Red pepper (토양중 중금속함량이 고추의 생육 및 중금속 흡수에 미치는 영향)

  • Park, No-Kwuan;Lee, Jong-Pal;Park, Seon-Do;Choi, Boo-Sull;Kim, Bok-Jin
    • Korean Journal of Environmental Agriculture
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    • v.18 no.1
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    • pp.24-27
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    • 1999
  • When red pepper was cultivated in the polluted soil with heavy metals, the content of these heavy metals affected. The contents of heavy metals at a site near Zinc mine dump in the Youngyang area were very high compared with those in a normal area and it was highest in 2.0km site. followed 2.5km > 3.0km apart from Zinc mine dump. The growth of red pepper was remarkably poor and the contents of heavy metals in polluted soil were higher than in unpolluted soil. The relationship between the content of Zn, Cu, Pb, Cd, As and the growth of red pepper was negatively correlated, respectively. A higher correlation seemed to exist among the content of Zn.Cu, Cd, As in soil, of Zn, Cd, and As in red pepper. The result indicated that heavy metals were absorbed and accumulated by plants grown in the polluted area.

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