Search

The article focuses on the development of custom 3D-printed organs as a potential solution to address the shortage of organ transplants and improve the accessibility of organ fabrication.

The author shares some popular topics he has seen in environmental testing laboratories, as of September 2023. These include the issue when using solid-phase extraction (SPE) to analyze non-polar to moderately polar analytes, breakdown of thermolabile analytes in the gas chromatography (GC) injection port liner, and poor recoveries because of pH issues.

The article shares tips for solvent extraction. Measures recommended include pre-rinsing of cartridge, ensuring cartridge dryness, slower elution rates and soak times in the applications, usage of ammonium hydroxide for elutions, and adding hydrogen chloride in methyl alcohol (MeOH) to help reduce volatility of certain analytes. It suggests non-chlorinated elution solvents.

The article provides information about various resins used in demineralization process to remove the mineral salts that ionize in the water. The ion exchange resins are substances which contains one or more acidic or basic radicals used to remove inorganic salts in demineralization unit. Ion exchange resins are available in either gel or macroporous beads. The two reactions involved in the demineralization by ion exchange are discussed.

The article presents a study that explores the significance of new automated solid phase extraction (SPE) approach for troublesome water samples using method 8270D from the U.S. Environmental Protection Agency (EPA). It mentions the application of Fast Flow Sediment Disk Holder and the Atlantic One Pass Disk developed by Horizon Technology Inc. to meet the analytical demand in SPE. Processes for ion exchange and carbon cartridge elution and acidic extraction are also outlined.

The article reports on the treatment of perchlorate and other organics in drinking water. Ion exchange technology is used in perchlorate removal but other contaminants such as nitrates and sulfates high concentration present in water increase the treatment cost. Though no certification has been made by the National Science Foundation, the activated carbon system which uses a granular carbon that has the adsorption and ion exchange ability offers an effective and money saving solution in treating drinking water.

Focuses on the development of electrodeionization (EDI) water treatment technology. Refinement of the reverse osmosis method; Functioning of the EDI; Financial and operational advantages of EDI. INSET: New Frontier.

The article discusses the membrane technologies being used by a large power generator in California to treat and reuse cooling tower blowdown in a Zero Liquid Discharge (ZLD) process. Topics covered include the use of microfiltration (MF) technology to remove precipitated solids, the technologies required to remove dissolved solids such as Continuous Deionization and reverse osmosis, and acid cleaning.

In this article, the author shares his experiences regarding a lab explosion following isopropanol distillation process, and offers chemical safety suggestion. Topics discussed include preparation of transparent glass bottles with isopropanol and deionized water, refluxation of isopropanol with magnesium chips and iodine, and identification of peroxides in samples.

The article offers suggestions for preparing eluents for the high performance liquid chromatography (HPLC). Topics discussed include using of good quality organic solvents and deionized water; considering the detergents used for washing glassware; measurement of true pH in aqueous solution; and avoiding the use of laboratory film on eluent reservoirs containing organic solvent.

Focuses on the outsourcing of water treatment services in electric power-plants. Information on emergency mobile demineralizer; Details of the plant water treatment service contracts; Advantage of trailer-mounted ion exchange demineralization units in the industry; Discussion on treatment equipment configurations.

Introduces the countercurrent upflow technique in water treatment. Arrangement of the cation exchange resin; Advantage of upflow service; Problems with upward regenerant flow fluidity; Prevention of full bed fluidization; Requirements in efficient resin cleaning; Use of resin of uniform particle size; Comparison of countercurrent-regeneration approaches.

The article offers information on Protego Plus HT/HTX purification solution from contamination control products provider Entegris.

The article offers information on the CrossCharge Hybrid Deionization (Hybrid DI) system from Pentair.

The article reports on the result of the study that focuses on identifying the presence of cyanide in drinking water and wastewater sources through the utilization of ion-exclusion chromatography-pulsed amperometric detection (ICE-PAD). The study was conducted in 100 millimetre (mM) sodium hydroxide (NaOH) using the Dionex ICS-3000 system with an electrochemical detector (ED). The ICE-PAD showed reduced detection limits and enhanced recoveries of cyanide compared to ion-exchnge chromatography.

Features the use of ion exchange process in solving nitrate contamination in the United States. Nitrate contamination in groundwater; Remedy alternatives; Ion exchange treatment; Disposing wastewater from the process.