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박삼배,Park, Sam-Bae 환경보전협회 2013 환경정보 Vol.408 No.-
석면은 여러 가지 장점에도 불구하고 석면을 흡입할 경우 폐암, 악성중피종 등과 같은 치명적인 폐질환을 유발한다. 몇 년 전까지 우리의 일상생활 속 건축물의 건축자재, 자동차 부품 등에 특별한 제약 없이 석면이 여러 가지 자재로 사용되어 우리 일상생활에 분포되어 있으며 석면을 안전하게 관리하기 위해 분야별 석면관리제도가 추진중에 있다. 석면해체 제거작업 및 건축물 석면조사의 법 사각지대가 발생하고 있어 제도적 보완이 필요한 시점이라 하겠다.
화학적 개질방법을 적용하여 폐목재로부터 제조한 바이오차를 이용한 중금속 제거
김동수 ( Dong-su Kim ),최종수 ( Jong-soo Choi ),김세희 ( Se-hee Kim ),도지영 ( Ji-young Do ),박삼배 ( Sam-bae Park ),최유림 ( Yu-lim Choi ),장윤영 ( Yoon-young Chang ),양재규 ( Jae-kyu Yang ) 한국수처리학회 2020 한국수처리학회지 Vol.28 No.6
Wastewater containing various harmful heavy metals is commonly generated from small businesses in the Seoul metropolitan area, and it may cause serious pollution to the soil, surface water and underground water due to improper treatment. In order to treat wastewater containing heavy metal ions, adsorption technique using carbon-based material is generally applied. Among several carbon-based material, biochar has much attention because it is known to have a large surface area and high cation exchange capacity. In this study, bio-char powder was manufactured by pyrolysis of waste wood in the range of 400 to 900°C and/or was modified using several acidic solutions such as chloroacetic acid, nitric acid and phosphoric acid to improve adsorption of heavy metals. In order to save energy, pyrolysis was performed with three methods, namely, microwave, low temperature Dry Oven and tube furnace. In the case of biochar obtained by pyrolysis with microwave, removal capability for Pb(II) and Cd(II) was 91.7 mg/g and 75.1 mg/g, respectively. In addition, when low temperature pyrolysis was performed using dry oven after phosphoric acid refinement, the removal capacity for Pb(II) and Cd(II) was 70.1mg/g and 60.8 mg/g, respectively. Finally, in the case of pyrolysis using tube furnace, removal capability for Pb(II) and Cd(II) was 89.7 mg/g and 67.7 mg/g, respectively. The biochar obtained from phosphoric acid-low temperature pyrolysis in dry oven is considered to be the most practical modified method considering possibility of mass production and saving of energy input, although it has less relative removal of heavy metal ions than tube-furnace and microwave oven (700 W). The results of this study show that the chemical modification of biomass using phosphoric acid and low-temperature pyrolysis can be potentially applied in the treatment wastewater contaminated with heavy metal ion in the future