Experimental and rheological modelling on the stabilization of iron ore slurry using a biosurfactant extracted from Aloe barbadensis Miller

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-03-12 DOI:10.4314/bcse.v38i3.6

Subrata Narayan Das, Susanta K. Biswal, Ajit Behera, Hamza Belbsir, Khalil El-Hami, Ranjan K. Mohapatra

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Abstract

The pipeline transportation of iron ore slurry (IOS) is an eco-friendly alternate mode to transport the raw materials to longer distance and reduce the transportation network congestion problems. Proper selection of surfactant could modify mineral’s viscosity, dispersion and wetting characteristics effectively as may be desired, which may further be monitored. A surfactant alters surface characteristics after being adsorbed onto minerals by altering the interfacial behaviour. This work is first report of the influence of a biosurfactant sourced from Aloe barbadensis Miller on the rheological behaviour of a high-grade iron ore (IO) sample at 45–72% by mass slurry concentrations range. The observed rheological parameters confirmed the non-Newtonian flow behaviour of the slurry. The collected IO and dried IOS samples were subjected to UV-Vis, XRF, PSD, XRD, SEM and EDS analyses. Experimental rheological data at varying concentrations was tested on various models to ascertain the best-fit rheological model for IOS transport. The Bingham model was found to be the most suitable to model the rheology of IOS. Experimental rheological behaviour of IOS was found to be linear with the yield stress. The study shall help to ascertain the suitability of a biosurfactant to stabilise high grade iron ores for pipeline transportation. KEY WORDS: Iron ore slurry, Aloe barbadensis, Rheological measurements, Rheological modelling Bull. Chem. Soc. Ethiop. 2024, 38(3), 615-629. DOI: https://dx.doi.org/10.4314/bcse.v38i3.6

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使用从芦荟提取的生物表面活性剂稳定铁矿浆的实验和流变学模型

铁矿浆（IOS）的管道运输是一种环保的替代模式，可以将原材料运到更远的地方，减少运输网络的拥堵问题。适当地选择表面活性剂可以有效地改变矿物的粘度、分散性和润湿性，并可对其进行进一步的监测。表面活性剂吸附到矿物上后，会通过改变界面行为来改变其表面特性。本研究首次报道了来自 Aloe barbadensis Miller 的生物表面活性剂对高品位铁矿石（IO）样品在 45-72% 质量浓度范围内的流变特性的影响。观察到的流变参数证实了矿浆的非牛顿流体流动特性。对收集的 IO 和干燥的 IOS 样品进行了 UV-Vis、XRF、PSD、XRD、SEM 和 EDS 分析。对不同浓度下的实验流变数据进行了各种模型测试，以确定最适合 IOS 传输的流变模型。结果发现宾厄姆模型是最适合的 IOS 流变模型。实验发现，IOS 的流变行为与屈服应力呈线性关系。这项研究将有助于确定生物表面活性剂是否适合用于稳定高品位铁矿石的管道运输。关键字：铁矿浆、芦荟、流变测量、流变模型 Bull.Chem.Soc.2024, 38(3), 615-629. DOI: https://dx.doi.org/10.4314/bcse.v38i3.6

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.