지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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The purpose of this study is to promote utilization of paper mill sludge as an adsorbent for stabilizing heavy metals in contaminated water by measuring the adsorption capacity of paper mill sludge for cadmium and arsenic. To measure adsorption capacity of paper mill sludge, sorption isotherm experiments were analyzed by Langmuir and Freundlich isotherm models. Also, two methods of chemical modifications were applied to improve the adsorption capacities of paper-mill-sludge: the first method used sodium hydroxide (NaOH), called PMS-1, and the second method used the NaOH and tartaric acid ($C_4H_6O_6$) together, called PMS-2. For Cd adsorption, PMS-1 presented the increase of reactivity while PMS-2 presented the decline of reactivity compared to that of untreated paper-mill-sludge. In case of As adsorption, both PMS-1 and PMS-2 showed the decrease of adsorption capacities. This is because zeta-potential of paper mill sludge was changed to more negative values during chemical modification process due to the hydroxyl group in NaOH and the carboxyl group in $C_4H_6O_6$, respectively. Therefore, we may conclude that the chemical treatment process increases adsorption capacity of paper mill sludge for cation heavy metals such as Cd but not for As.
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참고문헌 (19)
참고문헌 신청
Battaglia, A / 2003 / Paper mill sludge-Soil mixture: Kinetic and thermodynamic tests of cadmium and lead sorption capability / Microchem. J 75:97~102
Bismarck, A / 2000 / Characterization of several modified jute fibers using zeta-potential measurements / Colloid Polym. Sci 278(3):229~235
Calace, N / 2002 / Adsorption isotherms for describing heavy-metal retention in paper mill sludges / Ind. Eng. Chem. Res 41(22):5491~5497
Framework Act on Environmental Policy / 2009 / Standard of groundwater quality, No. 10
Han, J.S / 1998 / groundwater environment and contamination / pakyoungsa :609~612
Bismarck, A / 2000 / Characterization of several modified jute fibers using zeta-potential measurements / Colloid Polym. Sci 278(3):229~235
Calace, N / 2002 / Adsorption isotherms for describing heavy-metal retention in paper mill sludges / Ind. Eng. Chem. Res 41(22):5491~5497
Framework Act on Environmental Policy / 2009 / Standard of groundwater quality, No. 10
Han, J.S / 1998 / groundwater environment and contamination / pakyoungsa :609~612
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