Realistic and effective degradation of petroleum related contaminants in seawater using ecofriendly NiO and ZnO nanocomposites with ca-MCM-41: Assessment and remediation

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-05-14 DOI:10.1016/j.jwpe.2025.107937

Mashael D. Alqahtani , Alshaima Sayed , May N. Bin Jumah , Nahaa M. Alotaibi , Hassan A. Rudayni , Ahmed A. Allam , Mostafa R. Abukhadra

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引用次数: 0

Abstract

A novel eco-friendly synthesis method was successfully developed to prepare calcium-doped mesoporous silica (Ca-MCM-41) from abundant natural limestone, effectively serving as a supporting framework for needle-like NiO and flake-like ZnO nanoparticles. Uniquely, phytochemically rich Origanum majorana (marjoram) extract was employed as a sustainable reducing and stabilizing agent to control nanoparticle growth, shape, and aggregation, providing enhanced stability and uniformity in the final composites (NiO@Ca-MCM and ZnO@Ca-MCM). Comprehensive characterization by different techniques confirmed the successful formation and distinctive morphological features of these nanostructures. Practically tested under realistic environmental conditions, the composites demonstrated remarkable photocatalytic activity, achieving complete mineralization of polycyclic aromatic hydrocarbons (PAHs) in heavily contaminated seawater samples from the Gulf of Suez. Quantitatively, ZnO@Ca-MCM exhibited superior performance, achieving 100 % removal of total PAHs within just 40 min at a catalyst loading of 0.8 g/L, while NiO@Ca-MCM achieved full mineralization within 80 min. The reaction was primarily driven by hydroxyl radicals, followed by superoxide radicals, elucidating a clear oxidation pathway. The significant outcomes from this study reveal the catalysts' potential for cost-effective and large-scale application in treating marine oil contamination. Given their high stability and recyclability, these composites offer a practical and scalable approach to addressing environmental pollution.

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生态友好型纳米复合材料ca-MCM-41对海水中石油相关污染物的实际有效降解：评价与修复

利用丰富的天然石灰石制备了钙掺杂介孔二氧化硅（Ca-MCM-41），并有效地作为针状NiO和片状ZnO纳米颗粒的支撑框架。独特的是，富含植物化学成分的马角兰提取物被用作可持续的还原和稳定剂，以控制纳米颗粒的生长、形状和聚集，从而提高最终复合材料的稳定性和均匀性（NiO@Ca-MCM和ZnO@Ca-MCM）。通过不同技术的综合表征证实了这些纳米结构的成功形成和独特的形态特征。在实际环境条件下的实际测试中，复合材料表现出了显著的光催化活性，在苏伊士湾严重污染的海水样品中实现了多环芳烃（PAHs）的完全矿化。在定量上，ZnO@Ca-MCM表现出优异的性能，在0.8 g/L的催化剂负载下，在40分钟内实现了100%的多环芳烃去除，而NiO@Ca-MCM在80分钟内实现了完全矿化。反应主要由羟基自由基驱动，其次是超氧自由基，阐明了一个明确的氧化途径。本研究的重要结果揭示了催化剂在处理海洋石油污染方面具有成本效益和大规模应用的潜力。鉴于其高稳定性和可回收性，这些复合材料为解决环境污染提供了一种实用且可扩展的方法。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies