利用蛤壳废料去除水中的汞：固定床吸附和模型研究

IF 0.4 Q4 ENVIRONMENTAL SCIENCES

Asian Journal of Water, Environment and Pollution Pub Date : 2023-11-27 DOI:10.3233/ajw230082

S. Baskar, K.R. Aswin Sidhaarth, L. Mangaleshwaran

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引用次数: 0

摘要

本论文研究了通过固定床吸附消除汞的蛤壳废粉（CSP）的可持续利用。这种 CSP 是新制备的，装在一个稳定的多端口柱中。通过改变床层深度（5、10、15、20 和 25 分钟）和流速（8、10 和 12 mL/min），评估了它们在柱中的突破性能。根据其突破曲线估算了 CSP 色谱柱的设计参数和动力学行为，并使用色谱柱模型进行了验证。结果表明，在较低的柱深（5 厘米）和较高的进水流速（12 毫升/分钟）条件下，CSP 床的饱和速度较慢，吸附容量最大（2.8 毫克/克）。此外，随着色谱柱深度的增加，传质区出现波动，表明存在非理想条件。YN 模型显示，使用 CSP 除汞的适应性更强。动态研究表明，CSP 是一种具有成本效益、生态友好、生物相容性和可持续性的吸附剂，可成功用于处理工业废水。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Utilisation of Clamshell Waste for Removing Mercury From Water: Fixed Bed Adsorption and Modelling Studies

The present communication investigated the sustainable utilization of the clamshell waste powder (CSP) for eliminating mercury through fixed bed adsorption. This CSP is freshly prepared and packed in a stable multi-port column. Their breakthrough performance in the column is evaluated by varying its bed depth (5, 10, 15, 20 and 25 min) and flow rate (8, 10 and 12 mL/min). The CSP column’s design parameters and kinetic behavior are estimated from its breakthrough curve and validated using column models. The results revealed that slow saturation of the CSP bed and maximum adsorption capacity (2.8 mg/g) occurred at lower column depth (5 cm) and elevated influent flow rates (12 mL/min). Moreover, the mass transfer zone exhibited fluctuations with elevated column depth, indicating the presence of non-ideal conditions. The YN model showed superior fitness for mercury removal using CSP. The dynamic studies showed that CSP is a cost-effective, eco-friendly, biocompatible and sustainable adsorbent that can be successfully employed for treating industrial effluent.

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来源期刊

Asian Journal of Water, Environment and Pollution ENVIRONMENTAL SCIENCES-

CiteScore

1.00

自引率

20.00%

发文量

期刊介绍： Asia, as a whole region, faces severe stress on water availability, primarily due to high population density. Many regions of the continent face severe problems of water pollution on local as well as regional scale and these have to be tackled with a pan-Asian approach. However, the available literature on the subject is generally based on research done in Europe and North America. Therefore, there is an urgent and strong need for an Asian journal with its focus on the region and wherein the region specific problems are addressed in an intelligent manner. In Asia, besides water, there are several other issues related to environment, such as; global warming and its impact; intense land/use and shifting pattern of agriculture; issues related to fertilizer applications and pesticide residues in soil and water; and solid and liquid waste management particularly in industrial and urban areas. Asia is also a region with intense mining activities whereby serious environmental problems related to land/use, loss of top soil, water pollution and acid mine drainage are faced by various communities. Essentially, Asians are confronted with environmental problems on many fronts. Many pressing issues in the region interlink various aspects of environmental problems faced by population in this densely habited region in the world. Pollution is one such serious issue for many countries since there are many transnational water bodies that spread the pollutants across the entire region. Water, environment and pollution together constitute a three axial problem that all concerned people in the region would like to focus on.