원료의 자원 재활용 의존도가 높은 제지산업의 대표적 부산물인 제지 슬러지는 발생량의 지속적인 증가로 처리비용도 증가되고 ‘96런던의정서의 발효로 향후 해양배출이 제한적 한시적으로 투기량의 감축 등 폐기물 처리여건의 악화로 제지산업의 경쟁력은 점점 약화될 실정이지만, Cellulose 등 유리물 함량이 높고 중금속등 유해물질의 함량이 적어 토양의 입단조직과 미...
원료의 자원 재활용 의존도가 높은 제지산업의 대표적 부산물인 제지 슬러지는 발생량의 지속적인 증가로 처리비용도 증가되고 ‘96런던의정서의 발효로 향후 해양배출이 제한적 한시적으로 투기량의 감축 등 폐기물 처리여건의 악화로 제지산업의 경쟁력은 점점 약화될 실정이지만, Cellulose 등 유리물 함량이 높고 중금속등 유해물질의 함량이 적어 토양의 입단조직과 미생물을 증가시키고 토양내 중금속 흡착력을 증가시켜 재활용 가치기 높은 제지슬러지를 이용하여 오염토양내 납 중금속의 고정화로 토양복원 가능성을 검토하였다.
원료의 자원 재활용 의존도가 높은 제지산업의 대표적 부산물인 제지 슬러지는 발생량의 지속적인 증가로 처리비용도 증가되고 ‘96런던의정서의 발효로 향후 해양배출이 제한적 한시적으로 투기량의 감축 등 폐기물 처리여건의 악화로 제지산업의 경쟁력은 점점 약화될 실정이지만, Cellulose 등 유리물 함량이 높고 중금속등 유해물질의 함량이 적어 토양의 입단조직과 미생물을 증가시키고 토양내 중금속 흡착력을 증가시켜 재활용 가치기 높은 제지슬러지를 이용하여 오염토양내 납 중금속의 고정화로 토양복원 가능성을 검토하였다.
The cost of processing paper sludge is also rising with the continuous increase in the quantity of paper sludge, which is a representative byproduct of the paper industry that is highly dependent on recycled resources for its raw materials, and the condition for the disposal of waste materials is ge...
The cost of processing paper sludge is also rising with the continuous increase in the quantity of paper sludge, which is a representative byproduct of the paper industry that is highly dependent on recycled resources for its raw materials, and the condition for the disposal of waste materials is getting worse including the temporary limited reduction of abandonment to the ocean since the effectuation of the London Convention in 1996. With these trends, the paper industry is losing its competitiveness. Thus, the present study examined the possibility of soil restoration through immobilizing lead in contaminated soil using paper sludge, which has a high reuse value as it contains a lot of hyalines including cellulose but not much harmful substances such as heavy metal, so increases aggregate texture and microbes in soil and improves the power of adsorbing heavy metals in soil. We input 1g of soil artificially contaminated with 12,000ppm of lead, and evaluated the efficiency of immobilization through 0.1N HCl extraction and TCLP with changing the input of simple paper sludge, sludge reformed with phosphate (KH₂PO₄), immobilizing agents (CaCO₃, Ca(OH)₂), etc. Paper sludge contained Fe (93.2%), Pb (3.6%) and other heavy metals (3.2%), and the total phosphorus (T‐P) was 17.1㎎/㎏. In case of Pb in the area of pH5.5, 61% existed as Pb²· ion. In the evaluation of immobilization efficiency of paper sludge and phosphate · reformed sludge, the efficiency was 88% in 0.1N HCl extraction and 97% in TCLP within a day’s reaction, but after that the immobilization reaction rate was less than 1% even after the lapse of over 30 days. In the experiment for comparing the immobilization efficiency of immobilizing agents (CaCO₃, Ca(OH)₂), both of the two agents showed high immobilization efficiency and reaction rate along with the increase in the input of the immobilizing agent, but Ca(OH)₂ was higher. In addition, according to the input of simple paper sludge, immobilization efficiency as high as 99.3% was obtained with the increase in the input. The high immobilization efficiency observed in this study is considered to come from the high Fe content in the paper sludge used.
The cost of processing paper sludge is also rising with the continuous increase in the quantity of paper sludge, which is a representative byproduct of the paper industry that is highly dependent on recycled resources for its raw materials, and the condition for the disposal of waste materials is getting worse including the temporary limited reduction of abandonment to the ocean since the effectuation of the London Convention in 1996. With these trends, the paper industry is losing its competitiveness. Thus, the present study examined the possibility of soil restoration through immobilizing lead in contaminated soil using paper sludge, which has a high reuse value as it contains a lot of hyalines including cellulose but not much harmful substances such as heavy metal, so increases aggregate texture and microbes in soil and improves the power of adsorbing heavy metals in soil. We input 1g of soil artificially contaminated with 12,000ppm of lead, and evaluated the efficiency of immobilization through 0.1N HCl extraction and TCLP with changing the input of simple paper sludge, sludge reformed with phosphate (KH₂PO₄), immobilizing agents (CaCO₃, Ca(OH)₂), etc. Paper sludge contained Fe (93.2%), Pb (3.6%) and other heavy metals (3.2%), and the total phosphorus (T‐P) was 17.1㎎/㎏. In case of Pb in the area of pH5.5, 61% existed as Pb²· ion. In the evaluation of immobilization efficiency of paper sludge and phosphate · reformed sludge, the efficiency was 88% in 0.1N HCl extraction and 97% in TCLP within a day’s reaction, but after that the immobilization reaction rate was less than 1% even after the lapse of over 30 days. In the experiment for comparing the immobilization efficiency of immobilizing agents (CaCO₃, Ca(OH)₂), both of the two agents showed high immobilization efficiency and reaction rate along with the increase in the input of the immobilizing agent, but Ca(OH)₂ was higher. In addition, according to the input of simple paper sludge, immobilization efficiency as high as 99.3% was obtained with the increase in the input. The high immobilization efficiency observed in this study is considered to come from the high Fe content in the paper sludge used.
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