Back
For best output, select "Paper Size" as "A4" and "Margin" as "0" or "None".
To save or print to PDF, please select Print Destination > Save as PDF, enable Background Graphics under "More Settings", then click "Save".
During the congress, E-Posters will be accessible to all participants on the congress website 24/7, as well as in the E-poster stations in the congress center.
Preparing your E-Poster
Please review the E-Poster format requirements carefully when preparing your E-Poster. Should your E-Poster not meet the mentioned requirements, it may not be displayed as described above.
E-Poster Submission Deadline
Please prepare and upload your E-Poster no later than March 14, 2026 11.59PM CET. After this date, you will no longer be able to prepare and upload your E-poster and it will not be displayed and accessible on the congress website.
Please follow the instructions below to input your abstract title.
Abstract titles should be brief and reflect the content of the abstract.
Portable reverse osmosis (RO) devices are indispensable in critical care and isolation units that lack centralized purified water systems. However, their high-pressure operation inherently results in considerable electricity consumption and water waste. During idle standby—intervals between patient sessions, system disinfection, or treatment delays—continuous high-speed pumping to maintain line pressure leads to unnecessary energy and water loss. To reconcile these competing demands for efficiency and readiness, this study developed and validated a Water and Power Reduction Mode (WPRM) that automatically adjusts pump speed and flow routing during idle standby to minimize resource consumption while maintaining immediate clinical availability.
Experiments were performed using the Synopex PRO800 portable RO system. Two flow sensors (product and return lines) monitored usage patterns; when equalized flow persisted beyond a hysteresis interval, the system automatically transitioned into WPRM. The pump speed was reduced from 750 rpm to 300 rpm, and the concentrate line was redirected to a low-flow internal loop. Three WPRM submodes were evaluated: 100D (100% drain), 50R (50% return), and 100R (100% return). Performance indicators included water consumption, power draw, and the recovery time to reach 5 µS/cm conductivity upon reactivation.
Compared with the Idle Standby mode (750 rpm; 136.7 W; 1,484 mL/min), all WPRM configurations substantially reduced both water and power consumption. In WPRM-100D, water use and power draw decreased to 526.6 mL/min and 34.9 W, respectively, with conductivity stabilization achieved in 25 seconds. The WPRM-50R mode further reduced water consumption to 267.3 mL/min while maintaining similar power usage (35.3 W) and recovery time (30 seconds). WPRM-100R completely eliminated feedwater use during standby (0 mL/min) but required 95 seconds to restore target conductivity after reactivation. Overall, the WPRM algorithm achieved up to 82% reduction in water consumption and 74% reduction in power consumption compared with Idle Standby. Among the tested modes, WPRM-50R demonstrated the most balanced performance, offering significant resource savings without compromising responsiveness. Continuous low-flow recirculation also prevented microbial stagnation and pressure accumulation, thereby improving system reliability and component longevity.
The WPRM algorithm effectively resolves the inherent conflict between sustainability and readiness in portable RO operation. By dynamically modulating pump speed and flow pathways, it enables significant reductions in both water and energy usage without compromising clinical responsiveness. This intelligent control strategy offers a scalable model for green dialysis innovation, particularly beneficial in intensive care, isolation, or emergency settings with intermittent treatment demand. Integrating smart standby management into dialysis water systems represents a pragmatic step toward achieving sustainable and net-zero kidney care.
