The Operational Performance of an Ultrafiltration Pilot Unit for the Treatment of Ultra-Concentrated Brines.

IF 3.3 4区工程技术 Q2 CHEMISTRY, PHYSICAL Membranes Pub Date : 2024-12-20 DOI:10.3390/membranes14120276

Giuseppe Scelfo, Paula Serrano-Tari, Ritamaria Raffaelli, Fabrizio Vicari, Isabel Oller, Andrea Cipollina, Alessandro Tamburini, Giorgio Micale

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Abstract

The valorization of ultra-concentrated seawater brines, named bitterns, requires preliminary purification processes, such as membrane filtration, before they can be fully exploited. This study investigates the performance of an ultrafiltration pilot plant aimed at separating organic matter and large particles from real bitterns. An empirical model for the bittern viscosity was developed to better characterize the membrane. Distinct variations in permeability, fouling resistance and rejection coefficient were observed under operational pressures ranging from 2 to 4 bar. Working at low pressure (2 bar), the pilot plant achieves permeability and rejection coefficient values of 17 L/m²hbar and 95%, respectively. Foulant behavior was characterized by determining a "fouling resistance", obtaining an average value of 1013 m^-1. Tests with three distinct bittern samples were conducted to assess the influence of chemical composition and organic matter content on membrane permeability and fouling characteristics. The collected data enabled a comprehensive characterization of the ultrafiltration pilot unit working with this particular saline feed solution, which has very high technical-economic potential.

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超滤中试装置处理超浓卤水的运行性能。

超浓缩海水卤水（称为卤水）的增值需要经过初步的净化过程，如膜过滤，然后才能充分利用。本研究研究了超滤中试装置的性能，旨在从真实的卤水中分离有机物和大颗粒。为了更好地表征该膜，建立了卤水粘度的经验模型。在2 ~ 4 bar的工作压力范围内，渗透率、抗结垢性和排斥系数发生了明显变化。中试装置在低压（2bar）下工作，渗透率和阻隔系数分别达到17 L/m2hbar和95%。通过确定“污垢阻力”来表征污垢行为，得到平均值为1013 m-1。采用三种不同的卤水样品进行了试验，以评估化学成分和有机物含量对膜透性和污染特性的影响。收集的数据能够全面表征超滤中试装置与这种特殊的盐料溶液的工作，该装置具有很高的技术经济潜力。

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来源期刊

Membranes Chemical Engineering-Filtration and Separation

CiteScore

6.10

自引率

16.70%

发文量

1071

审稿时长

11 weeks

期刊介绍： Membranes (ISSN 2077-0375) is an international, peer-reviewed open access journal of separation science and technology. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided.