deionization Articles
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Removal of mixture of ZnO and CuO nanoparticles (NPs) from water using activated carbon in batch kinetic studies
The aim of this study was to understand the effects of pH (5, 6, 7, 8, 9) and activated carbon (AC) concentration (0.01, 0.1, 1, 10, 100 g/L) on the removal of a colloidal solution of nanoparticles (NPs) (ZnO + CuO) using AC in batch kinetic studies. Results revealed that adsorption capacities of AC for Zn and Cu (individually) were 0.9 ± 0.028 mg/g (91.3% removal) and 0.95 ± 0.036 mg/g ...
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Photodegradation of the antihistamine cetirizine in natural waters
The photodegradation rate of the anti‐histamine cetirizine (Zyrtec®) was investigated in various water matrices. The average observed first‐order photodegradation rate coefficient (kobs), obtained by linear regression of the logarithmic‐transformed cetirizine concentrations versus irradiation time in simulated sunlight, was 0.024 h−1 (n = 6; S.D. ± 0.004) in deionized water (DIW) corresponding ...
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The study of capacitive deionization behavior of a carbon nanotube electrode from the perspective of charge efficiency
In this work, the capacitive deionization (CDI) performance of a single-walled carbon nanotube (CNT) electrode has been studied from the point view of charge efficiency theory. It is revealed here that the charge efficiency of a CNT electrode is strongly dependent upon the cell voltage and solution concentration. Either the high cell voltage or the low ionic strength results in a high charge ...
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Why the water bottle on your hydrogen generator is not transparent
It would be easier to check the level of water in your hydrogen generator's water bottle if it were transparent, but there is a very good reason why it's not. Peak Scientific hydrogen generators generate hydrogen via electrolysis. Electricity is provided to a proton exchange membrane cell within the hydrogen generator to split deionized water, into oxygen and hydrogen. Oxygen and hydrogen are ...
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Case Study - Water Resuse/Recycle
A leading electronics company faced increasing water costs of both influent and effluent. They contracted Applied Water Solutions for a pilot study using some of the most advanced methods of water purification on effluent from a clean out of place (COP) system. The pilot provided proof of principle of the selected process to recycle some of the DI Water rinse, and justified a ROI of less than one ...
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Enhancing capacitive deionization technology as an effective method for water treatment using commercially available graphene
In recent years, capacitive deionization (CDI) has been reported as one of the emerging technologies developed with the purpose of water desalination. This work is aimed at the integration of supercapacitor electrodes for efficient removal of ions from water, and thus to achieve an energy efficient, and cost-effective water treatment process. Our objective is to transfer the vast knowledge of ...
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Photocatalytic inactivation of
E. faecalis in secondary wastewater plant effluentsPhotocatalytic inactivation of Enterococcus faecalis using TiO2 suspensions was investigated and compared to the inactivation of the most commonly used faecal indicator strain Escherichia coli. In contrast to the inactivation in pure deionized water, disinfection of effluents from the biological process of an urban wastewater plant showed a longer initial lag phase and higher survival fractions ...
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Fabrication of titanium carburizing electrodes for capacitive deionization
Titanium carburizing electrodes were used as the electrodes in a capacitive deionization (CDI) process for desalination in this study. Two methods of high vacuum magnetron sputtering and chemical deposition were used for the preparation of nano-titanium carburizing electrodes (named Ti-C* and Ti-C**). By comparing the adsorption capacities of different kinds of electrode material, combined ...
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Valorization of granulated slag of Arcelor-Mittal (Algeria) in cationic dye adsorption from aqueous solution: column studies
A continuous adsorption study in a fixed-bed column was carried out using granulated slag (GS) as an adsorbent for the removal of methylene blue (MB) from aqueous solution. The effects of various parameters, such as initial dye concentration, flow rate, bed depth, and pH were investigated. Obtained results confirmed that the breakthrough time and exhaustion time were dependent on these ...
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Spray heating and spray cooling in Systec autoclaves
Sterilization materials that are at risk of bursting or deforming due to heating and cooling (or by the pressure differences created by these processes) can be safely sterilized using the spray heating and cooling program in Systec autoclaves. This feature ensures reliable inactivation without damaging the sterilization material. Rapid sterilization and cooling for improved efficiency ...
By Systec GmbH
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Removal of perfluorooctanoic acid (PFOA) in groundwater by nanofiltration membrane
Perfluorooctanoic acid (PFOA) is very persistent in the environment and resistant to typical degradation processes. PFOA has been widely used in surface-active agents and as an emulsifier in several products and can contaminate groundwater. Groundwater is considered as an important source of water; hence removal of PFOA contamination in groundwater is needed. This study aimed to examine the ...
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What Is Demineralized Water?
Demineralized water is water without its mineral and salt ions. Demineralised water is also known as demi water or deionised water. Introduction to Demineralized Water (or Deionized Water) Demineralized water that has had the non-water related ions removed. Demineralization of water is the removal of essentially all inorganic salts by ion exchange. In this process, strong acid cation resin ...
By YASA ET
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Electrodeionization - Ultrapure water
Continuous Electrodeionization Process The continuous electrodeionization process (CEDI), is a system that uses ion exchange resins and electricity for the production of ultrapure deionized water without chemical processes and without production stops. SIMPEC uses modular systems for the electrodeionization processes. The CEDI modules are installed at the exit of permeate coming from reverse ...
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Removal of phosphorus from water by using volcanic ash soil (VAS): batch and column experiments
Using low-cost and naturally available materials is considered an optimal adsorbent for removing phosphorus (P) from water due to its simplicity and economic efficiency. This study examined the removal of P from water using volcanic ash soil (VAS) by batch and column experiments. The maximum adsorption capacity of P was 2.94 mg g−1, estimated from the batch experiment according to a Langmuir ...
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SterliTech Tips: All Things Flat Sheet Membranes
Pre-Conditioning, Use, and Preservation What is membrane preconditioning and why is it recommended to precondition new flat sheet or spiral wound membranes prior to use? Membrane preconditioning is a filtration step using deionized water as feed solution and is typically performed at a pressure equal to or higher than the anticipated testing pressure. During this process membrane pores are ...
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TB 57: Rokeby generating station saves 50% in capital expense by using liqui-cel® 14x28 membrane contactors to remove CO2 to extend mixed bed resin life
Lincoln Electric Systems (LES) recently commissioned a membrane decarbonation system using Liqui-Cel® 14x28 Membrane Contactors to remove CO2 prior to their mixed bed deionizers. The system was installed at the Rokeby Generating Station (RGS) in Lincoln, Nebraska. BackgroundThe Rokeby Generating Station is LES’ primary peaking power station, totaling 255 MW and consisting of 3 duel fuel ...
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White paper - Ion Exchange Theory
Ion exchange is the removal of unwanted “charged” particles, called ions, from raw water. In this process the ions are transferred to a solid particle, called an ion exchanger, which accepts these ions while returning an equal number of desirable ions. The exchangers are made of porous plastic resin, which gives them many “exchange sites”. In the basic reaction, an ion ...
By W2 Systems
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Common Reasons For Syringe Leakage
The components of even the most durable syringe will eventually fail. The most common symptom of failure may be leakage of your solvent from the syringe. The following are some common reasons for syringe leakage, as well as our recommended solutions. 1. Tip Connection If your syringe hub consists of a PTFE tip, check for small grooves in the PTFE surface. If sufficiently large, these grooves ...
By Chemyx Inc
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Power Industry using Micro-Media Filtration and short-bed ion exchange
With the demand or higher efficiencies, lower maintenance and operating costs for boilwers and turbines, high-purity water treatment systems are becoming more crucial to the operation of power plants. Modern power plants, operating at supercritical and ultra upercritical boiler pressures and temperatures, require high-purity water that approaches quality levels at the theoretical levels. ...
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Tech Tips: Membrane Preconditioning
What is membrane preconditioning and why is it recommended to precondition new flat sheet or spiral woundmembranes prior to use? Membrane preconditioning is a filtration step using deionized water as feed solution and is typically performed at a pressure equal to or higher than the anticipated testing pressure. During this process membrane pores are wetted and the membrane structure may go ...
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