포도씨를 再活用한 活性炭의 製造
Preparation of Activated Carbon by Recycling of Waste Grape-seed
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본 연구에서는 농산물 폐기물인 국산 포도씨를 원료로 사용하여 roasting, cabonization, chemical activation 과정을 각각 거쳐 활성탄을 제조하였다. 화학적 활성화는 NaOH, KOH, ZnCl2를 활성화제로 사용하였다. 100-300wt%의 중량비율로 활성화하여 제조된 활성탄의 N2-BET 비표면적은 44.09- 121.33m2/g으로 측정되었다. 포도씨 활성탄에 메틸렌 블루를 흡착 시킨 후 UV spectrometer를 사용하여 투광도를 측정하였으며, 투광도 측정 시 메틸렌 블루의 최대 흡광파장은 660nm로 설정하였다. 그 결과 메틸렌블루의 흡착은 NaOH 활성화제를 사용하여 제조한 활성탄에서 가장 잘 이루어졌으며, 평형 흡착 시간은 60분인 것으로 나타났다.
Abstract
Korean grape-seed that is one of the agricultural wastes was used as a raw material to prepare activated carbon through roasting, carbonization and chemical activation processes. NaOH, KOH, ZnCl2 were also used as activation reagents. The mixing of the ratios of the grape-seed and each activation reagent were varied to 100-300 weight percent. The surface areas of the activated carbon manufacture from the grape-seed were 44.09-121.33m2/g. The adsorbate transmittance of methylene blue was determined UV absorption at 660nm as maximum adsorption wavelength using by UV spectrophotometer. As a result, adsorption of methylene blue on the activated carbon prepared with NaOH activation was more successful than others. Equilibrium absorption time was approximately 60 min.
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