再生尼龙-二氧化钛蜂窝过滤器的熔丝制备及灰废水过滤

IF 2.4 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
Sumit Kanti Saha, Mohammad Abdul Jalil, Nazmus Sakib, Tarikul Islam
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引用次数: 0

摘要

研究了一种用于灰色污水处理的尼龙蜂窝状三维过滤器,并对其在水处理中的性能进行了评价。蜂窝模块在终端和深度过滤过程中为颗粒沉积提供了曲折的途径。采用自旋涂覆的方法制备了二氧化钛纳米颗粒涂层,以提高堵塞效果和污染物截留率。开发了自定义测试装置来分析堵塞行为并估计过滤器的使用寿命。在死端模式下,涂层过滤器在第一个循环中实现了高达85%的生化需氧量(BOD)去除和80%的化学需氧量(COD)去除,而深度过滤实现了80%的BOD和75%的COD去除。在第五个循环中,深度过滤的COD去除率降至58%,深度过滤的COD去除率降至50%,表明重复使用后的去除率保持不变。扫描电子显微镜(SEM)显示渐进颗粒积聚;傅里叶红外光谱(FTIR)证实了TiO2的存在;能量色散x射线光谱(EDX)显示过滤后表面碳含量增加。紫外-可见(UV-Vis)光谱证实在峰值波长处适度的吸光度降低。然而,浊度和总悬浮固体(TSS)仍然高于可接受的限度(例如浊度>;235年南大;TSS祝辞410毫克/升),表明需要更细的孔径或多层过滤。第五次循环时,堵塞指数(CI)达到了0.45,深度过滤达到了0.40。结果表明,这种3d打印尼龙- tio2模块能够以快速的堵塞动力学去除中度污染物,为非饮用再利用和分散的灰水处理应用提供了希望。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Fused Filament Fabrication of Recycled Nylon-TiO2 Honeycomb Filters for Grey Wastewater Filtration

Fused Filament Fabrication of Recycled Nylon-TiO2 Honeycomb Filters for Grey Wastewater Filtration

Fused Filament Fabrication of Recycled Nylon-TiO2 Honeycomb Filters for Grey Wastewater Filtration

Fused Filament Fabrication of Recycled Nylon-TiO2 Honeycomb Filters for Grey Wastewater Filtration

This research focuses on fabricating a nylon honeycomb-structured three-dimensional (3D) filter for grey wastewater treatment using fused filament fabrication (FFF) and evaluating its performance in water treatment. The honeycomb module offered a tortuous pathway for particulate deposition during dead-end and depth filtration. A titanium dioxide (TiO2) nanoparticle coating was applied via spin coating to enhance clogging effects and contaminant retention. A custom test setup was developed to analyse clogging behavior and estimate the filter lifespan. In dead-end mode, the coated filter achieved up to 85% removal of biochemical oxygen demand (BOD) and 80% removal of chemical oxygen demand (COD) during the first cycle, while depth filtration achieved 80% BOD and 75% COD removal. By the fifth cycle, removal efficiencies decreased to 58% BOD and 50% COD in depth filtration, indicating sustained performance over repeated use. Scanning electron microscopy (SEM) visualized progressive particulate accumulation; Fourier-transform infrared spectroscopy (FTIR) confirmed TiO2 presence; and energy-dispersive X-ray spectroscopy (EDX) showed increased surface carbon content after filtration. Ultraviolet-visible (UV-Vis) spectroscopy confirmed moderate absorbance reduction at peak wavelengths. However, turbidity and total suspended solids (TSS) remained above acceptable limits (e.g., turbidity > 235 NTU; TSS > 410 mg/L), revealing the need for finer pore sizes or multilayer filtration. Clogging Index (CI) reached 0.45 in dead-end and 0.40 in depth filtration by the fifth cycle. The results demonstrate that this 3D-printed nylon-TiO2 module provides moderate contaminant removal with rapid clogging kinetics, offering promise for non-potable reuse and decentralized greywater treatment applications.

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来源期刊
Micro & Nano Letters
Micro & Nano Letters 工程技术-材料科学:综合
CiteScore
3.30
自引率
0.00%
发文量
58
审稿时长
2.8 months
期刊介绍: Micro & Nano Letters offers express online publication of short research papers containing the latest advances in miniature and ultraminiature structures and systems. With an average of six weeks to decision, and publication online in advance of each issue, Micro & Nano Letters offers a rapid route for the international dissemination of high quality research findings from both the micro and nano communities. Scope Micro & Nano Letters offers express online publication of short research papers containing the latest advances in micro and nano-scale science, engineering and technology, with at least one dimension ranging from micrometers to nanometers. Micro & Nano Letters offers readers high-quality original research from both the micro and nano communities, and the materials and devices communities. Bridging this gap between materials science and micro and nano-scale devices, Micro & Nano Letters addresses issues in the disciplines of engineering, physical, chemical, and biological science. It places particular emphasis on cross-disciplinary activities and applications. Typical topics include: Micro and nanostructures for the device communities MEMS and NEMS Modelling, simulation and realisation of micro and nanoscale structures, devices and systems, with comparisons to experimental data Synthesis and processing Micro and nano-photonics Molecular machines, circuits and self-assembly Organic and inorganic micro and nanostructures Micro and nano-fluidics
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