사용 후 유리세라믹(Lithium-Aluminum-Silicate)을 활용한 중금속 제거 기초 연구
A Basic Study for Removal of Heavy Metal Elements from Wastewater using Spent Lithium-Aluminum-Silicate(LAS) Glass Ceramics
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본 연구에서는 인덕션 탑플레이트(induction top plate) 소재로 사용된 후 폐기되는 사용 후 Li2O-Al2O3-SiO2계 결정화 유리를 활용하여 중금속 용액 내 존재하는 중금속(Pb, Cd, Cr6+, Hg) 이온들의 제거 실험을 진행하였다. 중금속 흡착제로 사용된 흡착제의 양, 흡착 반응시간, 초기 중금속 원소의 농도, 초기 용액의 pH 등의 반응 조건에 따른 중금속 제거 효율의 변화를 조사하였다. 사용 후 LAS 첨가량이 증가할수록 중금속 제거 효율이 상승하였다. 흡착 반응 시간은 흡착 특성에 큰 영향을 미치는 것으로 확인되었으며, 모든 중금속 원소들의제거 효율이 상승하였다. 특히 반응 시간에 따라서 Cd의 경우 흡착제거 효율이 크게 개선되었다. 초기 중금속 용액 농도는 중금속 제거 효율에 영향을 미치지 않았다. 중금속 용액의 pH는 중금속 제거 효율에 영향을 미쳤는데, Cd의 경우 pH증가에 따라 중금속 제거 효율이 증가하였으며, Pb, Cr6+는 감소하였다. Hg는 pH가 흡착 특성에 큰 영향을 미치지 않았다.
Abstract
In this study, the heavy metal ions (of Pb, Cd, Cr, and Hg) in wastewater were removed using a spent Li2O-Al2O3-SiO2-based crystallized glass previously used as an induction top plate material. Changes in the removal efficiency of heavy metals according to different reaction parameters, such as the amount of zeolite used as a heavy-metal adsorbent, adsorption time, initial concentration of the heavy metals, and pH of the initial solution, were investigated. As the amount of zeolite added increased, the heavy-metal removal efficiency also increased. Adsorption time had a considerable influence on adsorption characteristics, and the removal efficiency of all heavy metals increased with increasing adsorption time. In the case of Cd, the removal efficiency was greatly improved depending on the adsorption time. The initial concentration of the heavy-metal solution did not affect the removal efficiency; however, the initial pH of the heavy-metal solution affected the removal efficiency. More specifically, the removal efficiency of Cd increased while that of Pb and Cr decreased with increasing pH. The adsorption characteristics of Hg were not significantly affected by pH.
참고문헌 (16)
- 정정권, "미나리가 식재된 인공습지를 이용한 전자산업폐수의 유기물질 및 중금속 제거", 한국환경기술학회지, 14(4), pp.249~255 (2013), 한국환경기술학회
- 전관수, "전기화학적 환원공정을 이용한 정보산업 폐수로부터의 주석회수 최적 운전조건에 관한 연구", 한국폐기물자원순환학회지, 31(4), pp.461~468 (2014), 한국폐기물자원순환학회[DOI]
- 임정욱, "역학조사를 통해 직업성 폐암으로 판단된 사례분석", Annals of Occupational and Environmental Medicine, 22(3), pp.230~239 (2010), 대한직업환경의학회
- Gunatilake, S. K., "Methods of Removing Heavy Metals from Industrial Wastewater", Journal of Multi-disciplinary Engineering Science Studies, 1(1), pp.12~18 (2015)
- Bhagat, M., "Precipitation of mixed metal residues from wastewater utilising biogenic sulphide", Minerals Engineering, 17(7-8), pp.925~932 (2004)
- Stajcic, A., "Novel membrane-supported hydrogel for removal of heavy metals", Journal of Environmental Chemical Engineering, 3(1), pp.453~461 (2015)
- Lakard, S., "Retention of Cu(II)and Ni(II)ions by filtration through polymer-modified membranes", Separation and Purification Technology, 149, pp.1~8 (2015)
- Hilal, N., "Effects of heavy metals and polyelectrolytes in humic substance coagulation under saline conditions", Desalination, 220(7-8), pp.85~95 (2008)
- Liang, Y. J., "Hydro-thermal sulfidation and floatation treatment of heavy-metal-containing sludge for recovery and stabilization", Journal of Hazardous Materials, 217-218, pp.307~314 (2012)
- Ricon, G. J., "Simultaneous removal of oil and grease, and heavy metals from artificial bilge water using electro-coagulation", flotation, 2014, pp.144, 42~50
- Loizidou, M., "Ion-exchange properties of natural clinoptilolite, ferrierite and mordenite:Part 2. Lead—sodium and lead—ammonium equilibria", Zeolites, 7(2), pp.153~159 (1984)
- Semmens, M. J., "The Selectivity of clnoptilolite for certain heavy metals", Natural zeolites : Occurrence, pro-perites, use, pp.517~256 (1976), The International Natural Zeolite Association, Pergamon Press
- Jorgensen, S. E., "Ammonia removal by use of clinoptilolite", Water Research, 10(3), pp.213~224 (1976)
- Kayabali, K., "Testing the ability of bentonite-amended natural zeolite(clinoptinolite)to remove heavy metals from liquid waste", Environmental Geology, 34, pp.95~102 (1998)
- Lee, D., "Evaluation of leaching characteristic and kinetic study of lithium from lithium aluminum silicate glass-ceramics by NaOH", J. Environ. Sci, 107, pp.98~110 (2021)
- Sprynskyy, M., "Study of the selection mechanism of heavy metal (Pb2+, Cu2+, Ni2+, and Cd2+) adsorption", Journal of Colloid and Interface Science, 304(1), pp.21~28 (2006)