Computational fluid dynamic model for the prediction of the unsteady operation process of a non-dispersive gold extraction from wastewater

IF 6 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY Ain Shams Engineering Journal Pub Date : 2024-07-14 DOI:10.1016/j.asej.2024.102964

Ying Fu , Shaoping Kuang , Benqi Yuan , Puliang Lu , Yufu Liu , Lianchao Han

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Abstract

The current study tries to investigate gold extraction in a membrane extractor in unsteady mode. The model was successfully validated using experimental results. The results showed that the diffusive flux on the zone close to the membrane surface is dominant in the first minutes of extraction but later the convective flux is the main flux, particularly at the centre of the shell side. The extraction time of one hour was not ample to extract all gold from the aqueous solution when the volume of solutions was 2000 mL and 3000 mL. Finally, the change in feed flow rate in the range of 30–55 cm3/min did not have a significant influence on the gold extraction time. However, the outlet dimensionless concentration of gold after one hour was increased from 0.24 to 44 with the increase of feed flow rate from 30 cm³/min to 55 cm³/min.

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用于预测从废水中提取非分散金的非稳定操作过程的计算流体动力学模型

本研究试图探讨膜萃取器在非稳态模式下的金萃取问题。实验结果成功验证了该模型。结果表明，在萃取的最初几分钟，靠近膜表面区域的扩散通量占主导地位，但随后对流通量成为主要通量，尤其是在膜壳一侧的中心区域。当溶液体积分别为 2000 mL 和 3000 mL 时，一小时的萃取时间不足以从水溶液中萃取出所有的金。最后，进料流速在 30-55 立方厘米/分钟范围内的变化对金萃取时间的影响不大。然而，随着进料流速从 30 cm3/min 增加到 55 cm3/min，一小时后金的出口无量纲浓度从 0.24 增加到 44。

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来源期刊

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.