Enhanced Adsorption of Methylene Blue Using Aminotrimethylphosphonate-Grafted Hydroxyapatite Derived from Moroccan Natural Phosphate: A Sustainable Approach for Wastewater Treatment

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Water, Air, & Soil Pollution Pub Date : 2025-04-01 DOI:10.1007/s11270-025-07925-z

Sarah Saoiabi, Souhayla Latifi, Sanaâ Saoiabi

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Abstract

This study explores the enhancement of methylene blue (MB) adsorption from aqueous solutions using hydroxyapatite (HAp) grafted with aminotrimethylphosphonate (AMP). Leveraging Morocco's natural phosphate resources, HAp was synthesized and modified with varying concentrations of AMP (5%, 10%, 15%, and 20%) to evaluate its adsorption performance. Dynamic Light Scattering (DLS) analysis indicated a reduction in particle size with increasing AMP content, which improved the dispersion and stability of the HAp particles. Zeta potential measurements revealed that AMP grafting reduced the negative surface charge, particularly in acidic conditions, favoring the adsorption of the cationic MB molecules. X-ray diffraction (XRD) patterns showed increased crystallinity in the AMP-grafted composites, which provided a more stable adsorbent structure. Infrared spectroscopy (FTIR) confirmed successful AMP incorporation, leading to changes in the vibrational modes of key functional groups. The equilibrium adsorption capacity (qe) of the composites increased with AMP content, with the HAp + 20% AMP composite achieving the highest qe of approximately 0.0854 mg/g, demonstrating the effectiveness of AMP grafting in enhancing the adsorption properties of HAp. These findings suggest that AMP-grafted HAp composites are highly efficient adsorbents for methylene blue removal, offering a sustainable solution for wastewater treatment.

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源自摩洛哥天然磷酸盐的氨基三甲基膦酸接枝羟基磷灰石增强亚甲基蓝的吸附：一种可持续的废水处理方法

研究了氨基三甲基膦酸盐（AMP）接枝羟基磷灰石（HAp）对亚甲基蓝（MB）的增强吸附作用。利用摩洛哥的天然磷酸盐资源，合成HAp并使用不同浓度的AMP（5%, 10%， 15%和20%）进行改性，以评估其吸附性能。动态光散射（DLS）分析表明，随着AMP含量的增加，HAp颗粒的粒径减小，从而提高了HAp颗粒的分散性和稳定性。Zeta电位测量表明，AMP接枝减少了表面负电荷，特别是在酸性条件下，有利于阳离子MB分子的吸附。x射线衍射（XRD）表明，amp接枝复合材料的结晶度增加，提供了更稳定的吸附结构。红外光谱（FTIR）证实AMP成功加入，导致关键官能团的振动模式发生变化。复合材料的平衡吸附容量（qe）随着AMP含量的增加而增加，其中HAp + 20% AMP复合材料的平衡吸附容量达到最高，约为0.0854 mg/g，表明AMP接枝对HAp吸附性能的提高是有效的。这些发现表明，amp接枝HAp复合材料是一种高效的亚甲基蓝吸附剂，为废水处理提供了一种可持续的解决方案。

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.