As the demand for sustainable water and wastewater management continues to rise in both desalination and industrial sectors, there is been notable progress in developing Zero Liquid Discharge (ZLD) and Minimal Liquid Discharge (MLD) systems. Membrane technologies have become a key component of these systems, providing effective solutions for removing contaminants and enabling the recovery of both water and valuable resources. This article explores recent advancements in the design and operation of ZLD and MLD systems, discussing their benefits, challenges, and how they fit into larger treatment processes. Emphasis is given to membrane-based processes, such as reverse osmosis (RO), membrane distillation (MD), and forward osmosis (FO), as well as hybrid configurations, and innovative membrane materials. These advancements are designed to address critical challenges like fouling, scaling, high energy demands, and high brine production. The article also explores exciting research directions aimed at enhancing the efficiency and durability of membrane technologies in ZLD and MLD systems, paving the way for new innovations in sustainable water management across various industries.
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http://dx.doi.org/10.3390/membranes15020064 | DOI Listing |
Environ Sci Technol
March 2025
Analytical Chemistry Group, Department of Plant and Environmental Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark.
This study explores the correlation of contaminants of emerging concern (CECs) in wastewater effluents using liquid chromatography (LC), supercritical fluid chromatography (SFC), and comprehensive two-dimensional gas chromatography (GC × GC) with derivatization, all coupled to high-resolution mass spectrometry (HRMS). Over 300 compounds, including frequently overlooked highly polar and nonpharmaceutical CECs, were identified. Monitoring programs mainly focus on reducing variability and assessing pollution in wastewater treatment plant (WWTP) effluents under dry weather conditions, often neglecting wet-weather discharges.
View Article and Find Full Text PDFWater Res
February 2025
Department of Civil, Environmental and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea. Electronic address:
The semiconductor industry produces large quantities of acidic wastewaters containing high levels of hydrofluoric acid (HF) and sulfuric acid (HSO), which poses severe environmental concern. Zero liquid discharge (ZLD) treatment of these wastewaters is a pressing need for sustainable growth of the semiconductor industry. Herein, we propose an innovative membrane-based hybrid system that combines forward osmosis (FO) with multi-stage NF process for simultaneous treatments of HSO and HF wastewaters.
View Article and Find Full Text PDFHeliyon
February 2025
Universidad de Salamanca, Department of Applied Physics, Salamanca, 37008, Castilla y León, Spain.
The need for large-scale energy storage in the context of renewable electricity production worldwide is evident. Among the various energy storage methods, thermal energy storage stands out. It is independent of geographical location, allows high storage capacities, does not require scarce materials, and is cheaper than its direct competitors.
View Article and Find Full Text PDFCureus
February 2025
Department of Obstetrics and Gynaecology, NRI Institute of Medical Sciences, Visakhapatnam, IND.
Background: Caesarean delivery is an abdominal surgery and hydration and nutrition during postoperative care is a main concern for women. It is customary to give oral fluids only after 24 hours following the return of bowel sounds. Early oral fluid intake has been recommended for women after caesarean delivery, which may improve earlier gastrointestinal recovery that can facilitate early discharge from hospital.
View Article and Find Full Text PDFLab Chip
March 2025
Department of Chemical and Biomolecular Engineering, New York University, NY 11201, USA.
Atmospheric pressure plasma conversion of methane is usually addressed in gas-only systems, such as dry reforming of methane. Introducing a liquid in such a system enables direct utilization of plasma-produced radicals, such as methyl (CH), as a reactant in the liquid. Methylation of organic liquids by this technique can lead to the sustainable production of high-value products.
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