지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 675 - 685 (11page)
이용수
초록· 키워드
오류제보하기
Phospho-gypsum (PG) is a by-product generated from wet process of phosphoric acid production. The recycling rate of PG is only fifteen percents for the recycling uses, such as cement retardant, gypsum board, plaster, functional fertilizer. In the result of pH analysis, PG, neutralizing gypsum, soil, and dredged soil were 3.5, 7.4, 8 to 8.8, and 7.8, respectively. In case of the electric conductivity (EC), PG, neutralizing gypsum, and soil were 2,990 μS/cm, 2,230 μS/cm, and 84 ~ 99 μS/cm, respectively. In heavy metal contents of PG, As and Cd could be measured under environmental standards in Korean Soil Environment Conservation Act. In inorganic elements of leaching PG, Ca and Na were 629 mg/ L and 13 mg/L, respectively, but As, Cd, and other elements were detected under the regulated levels in Korean Waste Management Act. Also, among inorganic elements in PG, the leaching ratio of Mg and Cd were 7.3%, 1.3% respectively. In neutralized PG, leaching ratio of Mg and Cu were 1.9%, 1.4% respectively compared with other elements. In sequential batch leaching test, the leaching concentrations of As and Cd were rapidly decreased after 2 days. F− and Ca were steadily decreased until 2 days and 8 days, respectively, and no more change since then. In case of SO4 2−, it fell at constant rate to 1,600 ~ 1,800 mg/L. As seen in Ca leaching curve relating to pH value, the leaching decreased with increasing pH.
목차
등록된 정보가 없습니다.
참고문헌 (15)
참고문헌 신청
Pérez-López, R. / 2010 / Dynamics of contaminants in phosphogypsum of the fertilizer industry of Huelva (SW Spain): From phosphate rock ore to the environment / Applied Geochemistry 25:705~715
Kim, W. I. / 2014 / A study on environmental assessment of recycled product / Proceedings of the 2014 Autumn Conference of the Korea Society of Waste Management
Yoon, C. W. / 2014 / Leaching characteristics of phosphogypsum using sequential batch test apparatus / Proceedings of the 2014 Autumn Conference of the Korea Society of Waste Management
National Institute of Environmental Research / 2014 / Methodology of the Environmental Assessment on the Recycled Products and Wastes :1~47
Korea Institute of Civil Engineering and Building Technology / 2001 / A study on the beneficial use as landfill embankment and ground material of phosphogypsum :1~256
Kim, W. I. / 2014 / A study on environmental assessment of recycled product / Proceedings of the 2014 Autumn Conference of the Korea Society of Waste Management
Yoon, C. W. / 2014 / Leaching characteristics of phosphogypsum using sequential batch test apparatus / Proceedings of the 2014 Autumn Conference of the Korea Society of Waste Management
National Institute of Environmental Research / 2014 / Methodology of the Environmental Assessment on the Recycled Products and Wastes :1~47
Korea Institute of Civil Engineering and Building Technology / 2001 / A study on the beneficial use as landfill embankment and ground material of phosphogypsum :1~256
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