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Assessment of Blood Meal Applicability for Removal of DDT from Agricultural Soil

농경지 내 DDT 제거를 위한 동물혈분 적용 가능성 평가

  • Kim, Taein (Department of Environmental Science, College of Natural Sciences, Hankuk University of Foreign Studies) ;
  • Jho, Eun Hea (Department of Environmental Science, College of Natural Sciences, Hankuk University of Foreign Studies)
  • 김태인 (한국외국어대학교 자연과학대학 환경학과) ;
  • 조은혜 (한국외국어대학교 자연과학대학 환경학과)
  • Received : 2020.04.03
  • Accepted : 2020.05.14
  • Published : 2020.06.30

Abstract

BACKGROUND: Persistent organic contaminants such as dichlorodiphenyltrichloroethane (DDT) are often found in agricultural soils decades after it was banned in Korea. This study uses hemoglobin and hemoglobin-containing blood meal to reduce the residual DDT in soil. METHODS AND RESULTS: Hemoglobin or blood meal with or without hydrogen peroxide (H2O2) was mixed with the DDT-spiked soil prepared for this study, and samples were taken over 14 d-degradation period to measure the residual DDT concentrations. With only hemoglobin, DDT was completely removed after 14 d, while with both hemoglobin and H2O2, 73%, on average, removal was observed. Similarly, the blood meal removed 73% of DDT, but with H2O2, the DDT removal was only 39%. The lower DDT removal in the presence of H2O2 can be attributed to the adverse effects of reactive species. Hemoglobin was more effective than blood meal for DDT removal in a given time; however, with additional blood meal injection, complete DDT removal was achieved. CONCLUSION: Overall, this study shows that the blood meal that is used as a fertilizer can potentially be used to remove residual contaminants such as DDT in agricultural soil.

Keywords

References

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