농경지 내 DDT 제거를 위한 동물혈분 적용 가능성 평가

• Published in: Hanguk hwangyeong nonghak hoeji Vol. 39; no. 2; pp. 89 - 94
• Main Authors: 김태인, Taein Kim, 조은혜, Eun Hea Jho
• Format: Journal Article
• Language: Korean
• Published: 한국환경농학회 30.06.2020
• Subjects: Agricultural fertilizer; Blood meal; DDT; Hemoglobin; Soil; 농학; Agricultural fertilizer; Hemoglobin; Soil; DDT; Blood meal
• ISSN: 1225-3537; 2233-4173
• DOI: 10.5338/KJEA.2020.39.2.12

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 (H 2 O 2 ) 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 H 2 O 2 , 73%, on average, removal was observed. Similarly, the blood meal removed 73% of DDT, but with H 2 O 2 , the DDT removal was only 39%. The lower DDT removal in the presence of H 2 O 2 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.