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Simulation of a continuous metal separation process by polymer enhanced ultrafiltration

机译:通过聚合物增强超滤模拟连续金属分离过程

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The separation of metals from aqueous streams by continuous polymer enhanced ultrafiltration (PEUF) was simulated in order to understand, evaluate and optimize the process feasibility. The model allows one to examine the influence of physico-chemical and operation variables on the metal reduction and productivity of the treated water stream. For a given metal-polymer system, the computations revealed that the most influential operation variables are the acid and base reagents expended on the process, the amount of polymer used and the recycling stream flow, which are represented by the dimensionless parameters af, pp and to, respectively. Two of them can be free chosen while the third one is determined by a fixed treated water production and metal reduction. The selection of af and pp values should be a compromise between the costs of the reagents to regenerate the polymer and the energy spent to achieve a permeate flow. If process efficiency requirements are more exigent, higher values of af or pp are required. (c) 2005 Elsevier B.V. All rights reserved.
机译:为了理解,评估和优化工艺的可行性,对通过连续聚合物增强超滤(PEUF)从水流中分离金属进行了模拟。该模型允许检查理化和操作变量对处理后的水流中金属还原和生产率的影响。对于给定的金属-聚合物系统,计算表明,最有影响力的操作变量是过程中消耗的酸和碱试剂,所用聚合物的量和循环流流量,它们由无量纲参数af,pp和分别。其中两个可以自由选择,而第三个则由固定的处理水产量和金属还原量决定。 af和pp值的选择应该是使聚合物再生的试剂的成本与实现渗透流所花费的能量之间的折衷。如果工艺效率要求更高,则需要更高的af或pp值。 (c)2005 Elsevier B.V.保留所有权利。

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