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首页> 外文会议>AIChE Annual Meeting >One step co-sintering process for low-cost fly ash based ceramic microfiltration membrane in oil-in-water emulsion treatment
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One step co-sintering process for low-cost fly ash based ceramic microfiltration membrane in oil-in-water emulsion treatment

机译：水油乳液处理中低成本飞氨基陶瓷微滤膜的一步共烧结工艺

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摘要

Ceramic membranes with higher chemical stabilities and organic solvent resistances are indispensable for water purification. The fabrication of low-cost ceramic membranes (lower sintering consumption and cheaper membrane materials) facilitates practical water treatment applications. In this study, a novel process for the fabrication of a low- cost fly ash based microfiltration (MF) membrane via a co-sintering process was proposed. In the novel process, the MF layer was sprayed on a “green” fly ash support and co-sintered. The mullite fibers with excellent heat resistance and stability were proposed to alleviate the shrinkage difference in the co-sintering process, and improve the porosity and bending strength of the support. The raw material cost, energy consumption, and preparation period of the ceramic membrane could be significantly reduced. The prepared ceramic MF membrane had an average pore size of 100 nm with a high permeability of 450 Lm-2 h-1 bar-1 . Moreover, it exhibited a high total organic carbon (TOC) removal efficiency (> 99%) for oil-in-water (O/W) emulsion, and a high stable permeability of 165 Lm-2 h-1 bar-1 was maintained. This technique, combining low-cost materials and the co-sintering process, can serve as a cost-effective method for the production of high-performance ceramic membranes for water purification.
机译：具有较高化学稳定性和有机溶剂抗性的陶瓷膜是不可或缺的水净化。低成本陶瓷膜的制造（低烧结消耗和更便宜的膜材料）有助于实用的水处理应用。在该研究中，提出了一种通过共烧制工艺制造低成本飞氨基微滤（MF）膜的新方法。在新方法中，将MF层喷涂在“绿色”粉煤灰支撑和共烧结。提出了具有优异耐热性和稳定性的莫来岩纤维，以减轻共烧结过程中的收缩差，并改善载体的孔隙率和弯曲强度。陶瓷膜的原料成本，能量消耗和制备时段可显着降低。制备的陶瓷MF膜的平均孔径为100nm，具有450lm-2 H-1巴-1的高渗透性。此外，它表现出用于水 - 水（O / W）乳液的高总有机碳（TOC）去除效率（> 99％），保持高稳定的渗透率为165Lm-2 H-1巴-1 。这种技术，组合低成本材料和共烧成过程，可以作为生产高性能陶瓷膜进行水净化的成本有效的方法。

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