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首页> 外文期刊>Journal of industrial and engineering chemistry >The removal of heavy metals in a packed bed column using immobilized cassava peel waste biomass
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The removal of heavy metals in a packed bed column using immobilized cassava peel waste biomass

机译：使用固定化的木薯皮废料生物量去除填充床塔中的重金属

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Several studies on the removal of heavy metals in batch systems using cassava waste biomass have been reported in literature. However, for practical and large scale operations, packed bed columns are preferred. This study investigated the biosorption of heavy metals (Cr3+, Co2+ and V3+) onto immobilized cassava peel waste in a packed bed column. Experiments were conducted with 100 mg/L of combined metal ion solutions under different flow rates (0.83-1.61 mL/s) and bed depths (5-15 cm). The dynamic behaviour of the process was described in terms of the breakthrough curves. The results showed that the removal efficiency was favoured by low flow rate and high bed depth. Biosorption efficiency was found to increase in the order V3+ > Cr3+ > Co2+ for all conditions tested. Amongst the two well-established column models tested, the bed depth service time (BDST) model with biosorption capacities of 99.6, 116.2 and 132.8 mg/L for Co2+, Cr3+ and V3+, respectively, fitted experimental data very well. The column was regenerated and reused six times consecutively without significant loss in biosorbent capacity signifying its appropriateness for commercial application. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：已有文献报道了使用木薯废弃物生物质去除间歇系统中重金属的几项研究。然而，对于实际和大规模操作，填充床塔是优选的。这项研究调查了重金属（Cr3 +，Co2 +和V3 +）在填充床塔中固定化的木薯皮废物上的生物吸附。在不同流速（0.83-1.61 mL / s）和床深度（5-15 cm）下，对100 mg / L的组合金属离子溶液进行了实验。用突破曲线描述了过程的动态行为。结果表明，低流速和高床深有利于去除效果。发现在所有测试条件下，生物吸附效率均以V3 +> Cr3 +> Co2 +的顺序增加。在测试的两个公认的色谱柱模型中，床深服务时间（BDST）模型对Co2 +，Cr3 +和V3 +的生物吸附能力分别为99.6、116.2和132.8 mg / L，非常适合实验数据。该色谱柱经过连续六次再生和重复使用，而生物吸附剂的容量没有明显损失，表明该色谱柱适合商业应用。 （C）2014韩国工业和工程化学学会。由Elsevier B.V.发布。保留所有权利。

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