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第3x卷第00期 环境科学 efficiency of mangar Fig.3 Effect of reaction temperature on the leaching efficiency mangai (The solid-liquid mass ratio was 1:10,the mass ratio of EMAS to H2SO.was 1:0. ratio of EMAS to H2O was 1:0.8 and the leaching time was 60 min) 图3反应温度对阳极泥中锰浸出率的影响 (固液比1:10,电解锰阳极泥与HS0:质量比1:0.9,电解锰阳极泥与62质量比1:0.8,浸出时间60min) 2.3固液比和反应时间对量漫出率的形响 由图4可知,当固液比从1:5增加到1:10,锰浸出率从96.20%增加到98.51%,继续增加 固液比,锰的浸出率变化不大。这是因为随着电解锰渣阳极泥固体颗粒含量的增加,悬浮液粘度和 矿浆团聚度增加,降低了外部扩散速度以及矿物颗粒表面的反应速率:此外,过高的固液比, 会产生大量浸出液,增加后续水处理成本。由图5可当反应时间从5min增加到l5min,锰浸出 率从91.33%提升到97.48%,同时浸出液p从026提高到1.24:而继续增加反应时间对锰的浸出 率影响不大。因此,本研究选取固液比为1:0拟及浸出时间为15m作为最佳浸出条件。 录用稿件 Fig.4 Effect of solid-liquid mass ratio on the manganese leaching efficiency in EMAS (The mass ratio of EMAS to H2SO was 1:0.9,the mass ratio of EMAS to H2O was 1:0.8,the leaching temperature was 45 C and the leaching time was 60 min) 图4固液比对阳极泥中锰浸出率的影响 (电解锰阳极泥与HSO4质量1:0.9,电解锰阳极泥与HO2质量比1:0.8,浸出温度45C,浸出时间60min)第 3x 卷第 00 期 环境科学 Fig. 3 Effect of reaction temperature on the leaching efficiency manganese in EMAS (The solid-liquid mass ratio was 1:10, the mass ratio of EMAS to H2SO4 was 1:0.9,the mass ratio of EMAS to H2O2 was 1:0.8 and the leaching time was 60 min) 图 3 反应温度对阳极泥中锰浸出率的影响 (固液比 1:10,电解锰阳极泥与 H2SO4质量比 1:0.9,电解锰阳极泥与 H2O2质量比 1:0.8,浸出时间 60 min) 2.3 固液比和反应时间对锰浸出率的影响 由图 4 可知,当固液比从 1:5 增加到 1:10,锰浸出率从 96.20 %增加到 98.51 %,继续增加 固液比,锰的浸出率变化不大。这是因为随着电解锰渣阳极泥固体颗粒含量的增加,悬浮液粘度和 矿浆团聚度增加,降低了外部扩散速度以及矿物颗粒表面的反应速率[28];此外,过高的固液比, 会产生大量浸出液,增加后续水处理成本。由图 5 可知,当反应时间从 5min 增加到 15 min,锰浸出 率从 91.33 %提升到 97.48 %,同时浸出液 pH 从 0.26 提高到 1.24;而继续增加反应时间对锰的浸出 率影响不大。因此,本研究选取固液比为 1:10 以及浸出时间为 15 min 作为最佳浸出条件。 Fig. 4 Effect of solid-liquid mass ratio on the manganese leaching efficiency in EMAS (The mass ratio of EMAS to H2SO4 was 1:0.9, the mass ratio of EMAS to H2O2 was 1:0.8, the leaching temperature was 45 ℃ and the leaching time was 60 min) 图 4 固液比对阳极泥中锰浸出率的影响 (电解锰阳极泥与 H2SO4质量 1:0.9,电解锰阳极泥与 H2O2质量比 1:0.8,浸出温度 45 ℃,浸出时间 60 min) 录用稿件,非最终出版稿
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