deionized water Articles

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Common Boiler Feed Water Treatment Issues and How to Avoid Them

by SAMCO Technologies, Inc.  (Sep. 23, 2016)

When treating boiler feed water (the combination of boiler makeup and condensate return water), several issues can arise that cause boiler scaling, corrosion, fouling, and system failure. Below, we break down the most common boiler feed water issues and how to avoid them to help ensure system efficiency and operational safety. While treating ...

The Desel System – Capacitive Deionization for The Removal of Ions From Water

by Water Environment Federation (WEF)  (May 7, 2007)

Capacitive deionization (CDI) represents a new approach to the treatment of a variety of water/wastewater streams contaminated with inorganic compounds. ENPAR Technologies Inc. of Canada has developed its DesEL System, which combines high water recoveries with high ion removal efficiencies. The system operates on the principle of capacitive ...

RO brine treatment and recovery by biological activated carbon and capacitive deionization process

by IWA Publishing  (Jan. 1, 2011)

The generation of brine solutions from dense membrane (reverse osmosis, RO or nanofiltration, NF) water reclamation systems has been increasing worldwide, and the lack of cost effective disposal options is becoming a critical water resources management issue. In Singapore, NEWater is the product of a multiple barrier water reclamation process from ...

Electrodeionization - Ultrapure water

by SIMPEC S.r.l.  (Sep. 29, 2011)

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 ...

The Generation of Pure Water

by Modern Pumping Today  (May 1, 2016)

As a world leading manufacturer of complex multi-port stainless steel diaphragm valves, GEMÜ has earned an excellent reputation in the biotech and pharmaceuticals’ markets. GEMÜ is now transferring the skills acquired in biotech and pharmaceutical applications, to water applications by designing and manufacturing plastic multi-port ...

Methods of Water Purification

by GE Water & Process Technologies  (Jan. 1, 1992)

This article is excerpted from 'Pure Water Handbook' published by Osmonics®, Inc. of Minnetonka, Minnesota USA and is printed with permission of Osmonics, Inc. Water treatment can be defined as any procedure or method used to alter the chemical composition or natural 'behavior' of a water supply. Water supplies are classified as either surface ...

Case Study - Water Resuse/Recycle

by Applied Water Solutions, Inc.  (Mar. 17, 2010)

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 ...

Photodegradation of the antihistamine cetirizine in natural waters

by John Wiley & Sons, Ltd.  (Jul. 18, 2014)

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; ...

Detecting Mercury in Water

by Arizona Instrument LLC  (Aug. 11, 2015)

Determination of Mercury (Hg) in Water by Hand-Held, Portable Cold Vapor Atomic Fluorescence SpectrometryWater is the most familiar and most abundant compound on Earth, making up 71% of its surface area.[1]It is a vital component for all known forms of life and is the aquatic habitat for thousands of species of microalgae, fish and shellfish. [2] ...

Detection of PCB in water using the ensys test kit

MATRIX: Water ANALYTE: PCB LIMIT OF DETECTION: 1260: 50 ppb 1254: 50 ppb 1248: 100 ppb 1242: 200 ppb 1232: 400 ppb 1016: 400 ppb MATERIALS: Ensys PCB 12 Test Kit, item # 7020301. Ensys PCB Soil Extraction Kit #7020300EA. Clean tap or deionized water. Equipment: Ensys Field System ...

Analysis of PCB in water using the envirogard test system

MATRIX: Water ANALYTE: PCB LIMIT OF DETECTION: Aroclor 1248: 1 ppm Aroclor 1260: 2 ppm Aroclor 1242: 2 ppm Aroclor 1254: 1.1 ppm BACKGROUND: This application describes a field screening method for determining PCB concentrations in water. A chemical reaction is induced that causes a color change ...

Detection of PAH IN WATER using the ensys test system

MATRIX: Water ANALYTES: PAH LIMIT OF DETECTION: 15 ppb MATERIALS: Ensys PAH Risc Soil Test Kit. Methanol (ACS Reagent Grade). Deionized water. Equipment: Ensys Field Accessory System. SAMPLE PREPARATION/ANALYSIS: Follow procedures are outlined in the Ensys PAH Risc Test Kit User’s ...

Desalination of oil sands process-affected water and basal depressurization water in Fort McMurray, Alberta, Canada: application of electrodialysis

by IWA Publishing  (Dec. 19, 2013)

The high content of inorganic species in water used to extract bitumen from the Alberta oil sands and in the groundwater below the oil sands is an increasing environmental concern. These water matrices require treatment before they can be reused or safely discharged. Desalination of the oil sands process-affected water (OSPW) and groundwater, or ...

Detection of PPT levels of atrazine in drinking water

MATRIX: Drinking Water ANALYTES: Atrazine LIMIT OF DETECTION: 5 ppt RANGE OF DETECTION: 5 to 500 ppt MATERIALS: Atrazine RaPID AssayÒ Kit and Sample Diluent Reagents: atrazine control (preparation described below), methanol and ethylacetate (pesticide grade) and distilled or deionized ...

Ultraviolet Light Oxidation of Free-Chlorine in Water

by Hanovia Ltd - a Halma Company  (Jun. 21, 2007)

Chlorine is the most frequently used chemical for water disinfection. Many industrial and commercial manufacturing facilities cannot tolerate the introduction of chlorine into the process because of contamination and unwanted chemical reactions. Chlorine affects the flavour and odour of drinks and fluids, accelerates corrosion on process vessels ...

Detection of alachlor and its sulfonic acid metabolite in water

MATRIX: Groundwater, surface water and well water ANALYTES: Alachlor and its major soil metabolite, ethane sulfonic acid (ESA) LIMIT OF DETECTION: Alachlor: 5 ppt to 500 ppt (for 10 mL sample) 0.5 ppt to 50 ppt (for 100 mL sample) ESA: 30 ppt to 3 ppb (for 10 mL sample) 3 ppt to 300 ppt (for 100 mL sample) ...

Crossflow Membrane Filtration High-Purity Water Systems

by GE Water & Process Technologies  (Apr. 1, 1991)

INTRODUCTION As the electronics industry continues to provide us with such products as high resolution television, notebook size portable computers and cars with automatic navigation systems, it becomes necessary to produce semiconductors with finer device geometries to allow for efficient placement of more circuits per a given area. This ...

Detection of part per trillion levels of 2,4-d in drinking water

MATRIX: Drinking water ANALYTES: 2,4-D (2,4-dichlorophenoxyacetic acid) and related phenoxy acids LIMIT OF DETECTION: 70 ppt to 5 ppb (for 10 mL sample), 7 ppt to 0.5 ppb (for 100 mL sample) MATERIALS: 2,4-D RaPID AssayÒ Kit and Sample Diluent Reagents: 2,4-D control (preparation described below), methanol and ...

Use of synthesized hydrophilic magnetic nanoparticles (HMNPs) in forward osmosis for water reuse

by IWA Publishing  (Aug. 25, 2015)

Forward osmosis (FO) is attracting worldwide attention as an emerging technology in the fields of power generation, water reuse, desalination, pharmaceuticals and food processing. Still, the critical challenge of finding a suitable draw solute for FO persists. Therefore the current research focuses on synthesizing hydrophilic magnetic ...

Removal of phosphorus from water by using volcanic ash soil (VAS): batch and column experiments

by IWA Publishing  (Jun. 24, 2016)

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 ...

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