首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >BEER CLARIFICATION BY CROSS-FLOW MICROFILTRATION - FOULING MECHANISMS AND FLUX ENHANCEMENT
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BEER CLARIFICATION BY CROSS-FLOW MICROFILTRATION - FOULING MECHANISMS AND FLUX ENHANCEMENT

机译:啤酒澄清了错流微滤-污染机制和通量的提高

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An experimental study of beer microfiltration has been carried out on ceramic membranes with the eventual aim of carrying this process through to the commercial scale. Enhancement of surface hydrodynamics through flow pulsation had little impact on flux suggesting that pore blocking by in-depth adsorption/deposition was the dominant factor and this was indeed found to be so. The nature of the foulants has been determined by studying the filtration rates of beer treated with various enzymes which degrade potential foulant species. Specific classes of carbohydrates and minerals have been identified as foulants. In particular, pentosans (carbohydrates composed of 5 numbered sugar rings) make a major contribution. A multi-stage backflush programme was developed and optimized in an attempt to achieve maximum pore clearance with minimal use of permeate and time. Moreover, when backflush (BF) was employed, staged increases in trans-membrane pressure had a more positive impact on flux improvement. The effect of membrane pore size on product quality and flux was also investigated in this work. Use of the BF programme achieved a flux improvement of 400%. [References: 10]
机译:啤酒微量过滤的试验研究进行了在陶瓷膜携带这一过程的最终目标商业规模。流体动力学通过流量脉动小对通量的影响表明,毛孔阻塞深入吸附/沉积是占主导地位的因素和发现这确实是如此。foulants性质决定了研究啤酒的过滤率治疗各种酶的降解潜力foulant物种。碳水化合物和矿物质已确定foulants。糖(碳水化合物组成的5编号环)作出重大贡献。反冲项目开发和优化为了实现最大孔间隙以最小的渗透和时间的使用。反冲(BF)工作时,上演了增加转移膜的压力更多对通量提高产生积极影响。膜孔径对产品质量和通量也研究了这项工作。项目实现了通量提高400%。(引用:10)

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