High-pressure reverse osmosis (HPRO) has been recently proposed for the energy-efficient desalination of hypersaline brines. To advance this technology, substantial innovation is needed, including the capacity to test membranes at ultra-high hydraulic pressures. Here, we report on the development of an apparatus designed and constructed specifically for coupon-scale membrane research in HPRO. The capabilities of the closed-loop crossflow system were demonstrated through desalination experiments at hydraulic pressures up to 150 bar and feed concentrations up to 2.0 M (117 g L⁻¹) NaCl. Several safety-related design considerations are highlighted in addition to the design of a custom-built membrane test cell and high-pressure seal to ensure leak-free, safe operation. Corrosion control protocols were also developed to enable long-term system compatibility with corrosive hypersaline feed solutions. Lastly, we highlight novel experiments that are now possible with this apparatus and discuss the benefit it represents to HPRO development by the membrane community.

高压反渗透 (HPRO) 最近被提议用于高盐盐水的节能脱盐。为了推进这项技术，需要大量创新，包括在超高液压下测试膜的能力。在这里，我们报告了专门为 HPRO 中的试样规模膜研究设计和建造的设备的开发。通过在高达 150 bar 的液压和高达 2.0 M (117 g L ^-1) 氯化钠。除了定制膜测试单元和高压密封的设计之外，还强调了几个与安全相关的设计考虑因素，以确保无泄漏、安全操作。还开发了腐蚀控制协议，以实现与腐蚀性高盐度进料解决方案的长期系统兼容性。最后，我们强调了现在可以使用该设备进行的新实验，并讨论它对膜社区 HPRO 开发的好处。