Impact of solvent-free ball milling on sulfur dissolution in groundwater simulants

Watershed Ecology and the Environment Pub Date : 2025-07-18 DOI:10.1016/j.wsee.2025.05.002

Ahmed Said , Mariama Assoumani , Mamie Ahmed Matoir , Thabiti Soudjay Kamal , Hamidou Hamada Soule , Qiwu Zhang , Mouayadi Said Ali Madi , Abacar Chakira , Zaïnati Ibrahim

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Abstract

Sulfur, the fifteenth most abundant element in the Earth’s crust, was activated through solvent-free ball milling to investigate its dissolution behavior and environmental implications. This study evaluated the influence of grinding conditions on sulfur’s phase transformation and solubility in different solvents. X-ray diffraction (XRD) analysis revealed a significant phase transition to the monoclinic β-sulfur phase (S-β) at a grinding speed of 500 rpm. Remarkably, sulfur solubility reached 807 ppm in water, compared to only 18.6 ppm in an acidic medium, underscoring the importance of solvent chemistry. Additionally, the activated sulfur exhibited self-photocatalytic activity, generating highly reactive oxidizing species crucial for the degradation of Methyl Orange (MO) dye, highlighting its potential for wastewater treatment. Advanced characterization techniques such as scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FT-IR) provided insights into the dissolution mechanisms. This study demonstrates the transformative potential of mechanically activated sulfur in environmental remediation and lays the foundation for future research on sustainable water treatment solutions.

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无溶剂球磨对模拟地下水中硫溶解的影响

硫是地壳中第15丰富的元素，通过无溶剂球磨活化，研究其溶解行为和环境影响。研究了不同研磨条件对硫在不同溶剂中的相变和溶解度的影响。x射线衍射（XRD）分析表明，在转速为500 rpm时，晶型明显转变为单斜晶型β-硫相（S-β）。值得注意的是，硫在水中的溶解度达到了807 ppm，而在酸性介质中只有18.6 ppm，这突出了溶剂化学的重要性。此外，活性硫表现出自光催化活性，产生对甲基橙（MO）染料降解至关重要的高活性氧化物质，突出了其在废水处理中的潜力。先进的表征技术，如扫描电子显微镜（SEM）和傅里叶变换红外光谱（FT-IR）提供了深入了解溶解机制。该研究展示了机械活化硫在环境修复中的转化潜力，为未来可持续水处理解决方案的研究奠定了基础。

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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来源期刊

Watershed Ecology and the Environment

CiteScore

3.00

自引率

0.00%

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