화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Clean Technology, Vol.23, No.4, 364-377, December, 2017
DOI10.7464/ksct.2017.23.4.364  Export Citation
활성탄 제조시 유 . 무연탄 혼합에 따른 화학적 활성화 및 휘발성유기화합물 흡착 특성
Characteristics on Chemical Activation and VOCs Adsorption of Activated Carbon according to Mixing Ratio of Anthracite and Lignite
조준형, 강성규1, 강민경2, 조국2, 오광중2, †
  • 부산대학교 창의적 해양항만도시 인프라 저영향개발 및 관리체계 구축사업단, 46241 부산광역시 금정구 부산대학로 63번길 2
  • 1부산대학교 사회환경시스템공학과, 46241 부산광역시 금정구 부산대학로 63번길 2
  • 2한국폴리텍Ⅶ대학 에너지환경과, 51518 경상남도 창원시 성산구 외동반림로 51-88
Joon-Hyung Cho, Sung-Kyu Kang1, Min-Kyoung Kang2, Kuk Cho2, and Kwang-Joong Oh2, †
  • Division of Creative Low Impact Development and Management for Ocean Port City Infrastructures, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Republic of Korea
  • 1Department of Civil and Environmental Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Republic of Korea
  • 2Department of Environmental Chemistry, Korea Polytachnic VII Collage, 51-88, Oedongballim-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, 51518, Republic of Korea
E-mail:
초록
본 연구에서는 활성탄 원료로서 국내산 무연탄의 낮은 비표면적을 향상시키기 위해 유·무연탄 혼합에 따른 화학적 활성화 및 휘발성유기화합물 흡착특성 연구를 수행하였으며, 이를 위해 원료 물성, 활성탄 제조공정별 특성, 제조 활성탄의 휘발성유기화합물 흡착성능이 분석되었다. 실험결과, 삼성분 항목 중 높은 회분함량과 기준을 초과한 납, 비소 중금속이 국내산 원료의 단점으로 나타났다. 단점 개선을 위해 유·무연탄을 혼합하고, 전처리, 활성화, 세척, 조립 공정의 최적 조건을 도출하여 비표면적 1,154 ~ 1,420 m2 g-1의 중간세공이 발달한 소수성의 활성탄을 제조할 수 있었으며, 모든 품질규격기준을 만족하였고, 상용활성탄과 유사한 물리화학적 특성을 나타내었다. 벤젠, 자일렌, 톨루엔 흡착에 상용 성능을 위한 원료 혼합조건은 최소 5,640 kcal kg-1 이상의 발열량이 필요하며, 자일렌 > 톨루엔 > 벤젠의 순서로 흡착성능이 우수한 것으로 보아 상대적으로 분자량이 크고 소수성이 강한 휘발성 유기화합물에 대하여 우수한 흡착성능을 가지는 것으로 나타났다.
In this study, to improve the low surface area of domestic anthracite as raw materials of activated carbon, characteristics on chemical activation and VOCs adsorption of activated carbon according to mixing ratio of anthracite and lignite. For these, properties of raw materials, parameter characteristics of preparation processes for activated carbon, and VOCs adsorption characteristic of the prepared activated carbon are analyzed. The experimental results showed that, the domestic anthracite had disadvantages of high contents for ash and lead, arsenic, which were exceeded for the heavy metal limits, in the properties of raw materials. To improve these diadvantages, using the mixing ratio of anthracite and lignite, and the optimum conditions for pretreatment, activation, washing, and pellitization process, the activated carbon had a range of BET (Brunauer-Emmett-Teller) surface area of 1,154 ~ 1,420 m2 g-1 with mesopore development and hydrophobic surface property. The carbons were satisfied with the quality standard for granular activated carbon, and had similar physicochemical properties with the commercial activated carbon. The minimum mixing condition for commercial VOCs activated carbon performance must have the caloric value of above 5,640 kcal kg-1, and the carbon had higher adsorption capacity with order of xylene > toluene > benzene according to more higher molcular weight and hydrophobic property.
Keywords:Activated carbon;Chemical activation;Anthracite;Lignite;Volatile organic compounds
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