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農業副産物을 이용한 廢水중의 Cr( Ⅵ) 및 Cd(Ⅱ)이온의 除去
朴勝祚,宋運坤 동아대학교 환경문제연구소 1986 硏究報告 Vol.9 No.1
This study was carried out in a batch and a continuous apparatus to removal Cr(Ⅵ) and Cd(Ⅱ) using formaldehyde -H₂SO₄ treated agricultural by-products as an adsorbents. Some results obtained are summerized as followings: 1. The best one of five adsorbents is Formaldehyde· H₂SO₄ treated Saw Dust in batch adsorption tests. 2. Equilibrium relations between adsorbents and adsorbates was concided in Freundlich equation.(0.15≤1/n≤0.47) 3. Adsorption rate of Formaldehyde· H₂SO₄ treated Saw Dust was not effected more or less by pH and adsorbed Formaldehyde· H₂SO₄ treated saw Dust showed desorption rate of about 80%. 4. Excellent conditions of a continuous adsorption apparatus are bed depth(15 ㎝), flew rate(255 ㎝/hr). 5. The adsorptive capacity of Formaldehyde· H₂SO₄ treated Saw Dust are 5.7㎎ Cr(Ⅵ)/FTSD g and 55㎎ Cd(Ⅱ)/FTSD g in a continuous adsorption tests.