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固定化菌による銅イオン含有フェノールの処理の効果をゲルビーズ内へのフェノールおよび銅イオンの浸透の動的挙動などから検討した。ゲルビーズ内のフェノールと銅イオンの濃度分布を測定した結果, ゲルビーズ中心部では銅イオン濃度が低いためにフェノール菌の増殖阻害のない領域が存在し, この領域ではフェノールが比較的容易に処理できることがわかった。固定化菌は110mg/lの比較的高濃度の銅イオン含有フェノールをほぼ完全に分解した。固定化ゲルビーズ内の菌の増殖やフェノールの処理を表す数式モデルが提出され, 回分処理における計算値が実験的に検証された。固定化菌は回分処理だけでなく連続処理でも銅イオン含有フェノールを効果的に処理できることが示唆された。 The efficiency of the degradation of phenol in the presence of copper ion by immobilized cell was evaluated on the basis of the dynamic behavior of permeation of phenol and copper ion into gel bead. As a result of measuring concentration distribution of phenol and copper ion in the gel bead, it was found that the region where cell growth was not inhibited existed in the center part of the gel bead due to the low concentration of copper ion, and the cells could degrade phenol relatively easily in that region. The immobilized cell degraded phenol almost completely under fairly high concentration of copper ion, i.e. 1-10 mg/l. The mathematical model was presented for representing cell growth and phenol degradation in the gel bead, and the calculated values were verified experimentally in a batch treatment. It was suggested that the immobilized cell could degrade phenol in the presence of copper ion not only in a batch treatment but also in a continuous treatment

Study on Treatment System for Degradation of Phenol in the Presence of Copper Ion by Immobilized Cell.