서지주요정보
구매립지 토사를 복토재로 재활용하기 위한 중금속 흡착에 관한 연구 = A study on adsorption of heavy metlas to reutilize old landfill soil as cover material of new landfill
서명 / 저자 구매립지 토사를 복토재로 재활용하기 위한 중금속 흡착에 관한 연구 = A study on adsorption of heavy metlas to reutilize old landfill soil as cover material of new landfill / 장원용.
발행사항 [대전 : 한국과학기술원, 1995].
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소장정보

등록번호

8005781

소장위치/청구기호

학술문화관(문화관) 보존서고

MCE 95012

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반납예정일

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초록정보

In 1993 the 62,940 tons of municipal solid waste(MSW) and 55,969 tons of industrial non-hazardous waste were generated daily in Korea and 81.6% and 31.4% of each waste were disposed of by landfill. But there are almost one thousand of unsanitary landfills in Korea. Thus there has been many associated problems such as the pollution from uncontrolled landfills, the shortage of new landfill sites and little availability of cover material. Recently the concept of landfill mining is being adopted and tested in Korea to utilize landfilled area and to recover the recyclable materials in it. The soils in the old landfill waste may be reused as the cover material of new landfill. In addition to this recycling, the landfill mining is a good way to remediate uncontrolled landfill and to prevent soil and groundwater pollution. And the purpose of this study is to estimate the adsorption capacity of heavy metals by old landfill soil, and to assess the possibility of usage as the cover material of new landfill. The adsorption capacity of old landfill soil was compared with that of the cover material of Kimpo new landfill site in Seoul Metropolitan area. The chemical characteristics such as cation exchange capacity(CEC), organic carbon content, weight loss from ignition, heavy metal leaching and physical characteristics of soil texture were investigated. Lead(Ⅱ) and chromium(Ⅲ) are used for the adsorption experiments of two pH values of 4 and 7. The Langmuir and Freundlich isotherms were used to analyze the adsorption characteristics of lead and chromium. Soil portion of the wastes in old HwaMyung and SukDae landfill in Pusan city which is the second biggest city in Korea is 74 ∼ 83% and that of old NanJi landfill was 26 ∼ 95%. Old landfill soil has higher pH values of 6.62 ∼ 8.17 than cover material of Kimpo new landfill site, and has the huge alkalinity of $5\times10^6\sim10\times10^6$ $CaCO_3$ mg/kg soil. In leaching test, Pb and Cr concentrations of old landfill soil are 0.28 ∼ 1.40mg/l and below 0.18mg/l, respectively, and safely below the limit values(Standard : Pb < 3ppm and Cr < 1.5ppm) of hazardous waste. Organic content of old landfill soil is 1.6 ∼ 3.8% and higher than that of the cover material of Kimpo landfill site of 0.14 ∼ 0.22%. The CEC of old landfill soil is 4.9 ∼ 16.4 meq/100g, and also higher than new cover soil of Kimpo landfill(6.8meq/100g). Adsorption experiment of Pb and Cr at pH=4 showed that Kn value of old landfill soil and the cover material of Kimpo landfill were 1.64 ∼ 11.8 and 1.45, respectively, which says that old landfill soil has better adsorption capacity than cover material. From these results, it has been found that old landfill soil is better adsorbent than the cover material, and in case of reusing the old landfill soil, 52 ∼ 65% volume reduction of cover material for new landfill site is expected if and only if the geotechnical criteria of design and operation of sanitary landfill are met.

서지기타정보

서지기타정보
청구기호 {MCE 95012
형태사항 ix, 82 p. : 삽화 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Won-Yong Jang
지도교수의 한글표기 : 구자공
지도교수의 영문표기 : Ja-Kong Koo
학위논문 학위논문(석사) - 한국과학기술원 : 토목공학과,
서지주기 참고문헌 : p. 79-82
주제 Heavy metals.
Fills (Earthwork)
흡착. --과학기술용어시소러스
중금속. --과학기술용어시소러스
매립. --과학기술용어시소러스
Adsorption.
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