Removal of Fe(II) from water using raw and calcinated weathered basalt: Influence of mineralogy and physical properties.

IF 4.4 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Journal of contaminant hydrology Pub Date : 2025-11-01 Epub Date: 2025-08-06 DOI:10.1016/j.jconhyd.2025.104692

Ali M El Shafey, Ahmed M Zayed, Hanafy M Abd El-Salam, Mahmoud S M Abdel Wahed

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引用次数: 0

Abstract

In this study, raw weathered basalt (RWB) and calcinated weathered basalt (CWB), both low-cost natural geological materials, were employed for the removal of Fe(II) from contaminated aqueous solutions and groundwater. CWB was prepared by calcining RWB at 900 °C for 3 h. Batch adsorption experiments were conducted, and the data fitted best with the Langmuir isotherm model. The adsorption kinetics followed the pseudo-second-order and intra-particle diffusion models. Although calcination improved the surface area and porosity, RWB exhibited higher Fe(II) removal efficiency, likely due to its richer mineralogical composition, particularly the clay content. The results suggest that modification by calcination does not necessarily enhance adsorption performance. The proposed mechanisms involve chemisorption, electrostatic attraction, cation exchange, surface complexation, and adsorption-oxidation. Additionally, RWB showed better performance than CWB in reducing Mn, Ca hardness, NH₃, NO₃^-, NO₂^-, and TDS during groundwater treatment. Therefore, RWB offers a more cost-effective and sustainable option for water purification without requiring energy-intensive modification.

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利用生的和煅烧的风化玄武岩从水中去除铁（II）：矿物学和物理性质的影响。

本研究采用低成本的天然地质材料——风化玄武岩（RWB）和煅烧风化玄武岩（CWB），对受污染的水溶液和地下水中的铁（II）进行了脱除。用RWB在900℃下煅烧3 h制备CWB，进行了间歇吸附实验，实验数据与Langmuir等温模型拟合较好。吸附动力学遵循准二级和颗粒内扩散模型。虽然煅烧改善了比表面积和孔隙率，但RWB表现出更高的Fe（II）去除效率，这可能是由于其更丰富的矿物组成，特别是粘土含量。结果表明，煅烧改性并不一定能提高吸附性能。提出的机理包括化学吸附、静电吸引、阳离子交换、表面络合和吸附氧化。在地下水处理过程中，RWB在降低Mn、Ca硬度、NH₃、NO₃-、NO₂-和TDS方面表现出比CWB更好的性能。因此，RWB为水净化提供了更具成本效益和可持续性的选择，而无需进行能源密集型改造。

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

Journal of contaminant hydrology 环境科学-地球科学综合

CiteScore

6.80

自引率

2.80%

发文量

129

审稿时长

68 days

期刊介绍： The Journal of Contaminant Hydrology is an international journal publishing scientific articles pertaining to the contamination of subsurface water resources. Emphasis is placed on investigations of the physical, chemical, and biological processes influencing the behavior and fate of organic and inorganic contaminants in the unsaturated (vadose) and saturated (groundwater) zones, as well as at groundwater-surface water interfaces. The ecological impacts of contaminants transported both from and to aquifers are of interest. Articles on contamination of surface water only, without a link to groundwater, are out of the scope. Broad latitude is allowed in identifying contaminants of interest, and include legacy and emerging pollutants, nutrients, nanoparticles, pathogenic microorganisms (e.g., bacteria, viruses, protozoa), microplastics, and various constituents associated with energy production (e.g., methane, carbon dioxide, hydrogen sulfide). The journal''s scope embraces a wide range of topics including: experimental investigations of contaminant sorption, diffusion, transformation, volatilization and transport in the surface and subsurface; characterization of soil and aquifer properties only as they influence contaminant behavior; development and testing of mathematical models of contaminant behaviour; innovative techniques for restoration of contaminated sites; development of new tools or techniques for monitoring the extent of soil and groundwater contamination; transformation of contaminants in the hyporheic zone; effects of contaminants traversing the hyporheic zone on surface water and groundwater ecosystems; subsurface carbon sequestration and/or turnover; and migration of fluids associated with energy production into groundwater.