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A collection of Resources, News and Technologies from the Water and Wastewater Treatment Industry
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Bipolar Membrane Electrodialysis for Conversion of 4% NaCl into HCl and NaOH: A Pilot-Scale Study
Bipolar membrane electrodialysis is an electro-membrane process in which a salt solution is converted into its corresponding acid and base products through the combined action of an electric field, ion-exchange membranes, and water dissociation at the bipolar membrane interface.
Diffusion Dialysis Recovery of Sulfuric Acid from a 15 wt% H₂SO₄ Feed Stream Mapping, Conductivity Analysis, and Temperature Evaluation
This study evaluates the recovery of sulfuric acid from a 15 wt% H₂SO₄ feed stream using diffusion dialysis (DD). The DD process operates through a concentration-gradient-driven membrane separation mechanism using an acid-resistant anion exchange membrane. During operation, acid species selectively migrate from the acid feed side to the water side, producing a recovered acid stream, while most metal ions, salts, and impurities are retained in the raffinate stream.
EOXCell Electro-Oxidation Test Equipment for Water and Wastewater Treatment
Electro-oxidation is a flexible electrochemical process used to treat colored, refractory, odorous, and microbiologically contaminated water and wastewater. Its performance depends strongly on the electrochemical cell, electrode material, current density, electrolyte composition, pH, temperature, and contact time. This article reviews the practical role of electro-oxidation testing and presents a laboratory demonstration conducted with the YASA ET EOXCell 1560.
Laboratory Evaluation of Methylene Blue Degradation by Electro-Oxidation Using the YASA ET EO Test Kit
This article is structured as a narrative technical review combined with a laboratory case study. It first summarises the electrochemical mechanisms and operating parameters that control treatment, then interprets a methylene-blue and sodium sulfate solution decolourisation test performed with the YASA laboratory electro-oxidation system. The case study is intentionally treated as a screening demonstration rather than as proof of complete pollutant mineralisation.
Cutting Fluid vs. Emulsion Wastewater: Composition, Environmental Risks, and Treatment Challenges
Cutting fluid is a specialized industrial fluid used during metalworking operations such as machining, milling, drilling, grinding, and stamping. Its primary functions are to cool, lubricate, clean, and protect both tools and workpieces during processing.
Textile Effluents: Advanced Wastewater Treatment and Disposal Solutions
In this article, we explore the main pollutants found in textile effluents, the environmental impacts of untreated wastewater, and the most effective textile wastewater treatment technologies used today.
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