drinking water extraction Articles
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Removal of arsenic from anthropogenic aqueous media: an analytical review with particular reference to solvent extraction technique
Arsenic is an environmental toxicant, which is known to cause serious ailments to humans and its presence in drinking water poses grave threat to millions of people all over the world. Apart from being drinking water pollutant, arsenic poses another dimension of problem in the recovery of metals from some of the sulfide ores, namely copper pyrites and galena. These were the two main reasons to ...
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Insight into Municipality of Zutphen’s groundwater situation
Project Groundwater level measurement network, Municipality of Zutphen Client Municipality of Zutphen Implemented by Eijkelkamp Soil & Water and Inter Act Country The Netherlands Background to installing groundwater level measurement network ‘Sound knowledge of groundwater levels, flows and fluctuations within the urban area is required for the Municipality of Zutphen to ...
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Different Methods of Groundwater Remediation
Groundwater remediation is essential in a wide range of businesses, from drinking water extraction to mining. It’s hugely important to have the best water treatment system in place to help. Here are a few different methods that are used in water remediation that you may need to incorporate into your plan. Physical Remediation Water purification starts on a physical level, with the removal ...
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Development of a risk-based approach for better protection of drinking water catchments in Flanders (Belgium)
Around 70% of the drinking water produced by De Watergroep (a Belgian public water company) is extracted from 83 groundwater pumping sites. To control the risks that endanger the drinking water supply and for the groundwater extracted to be as pure as possible, a risk-based approach for the protection of the catchment areas is developed, as part of the water safety plans. The approach ...
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Performance of Moringa oleifera extracts and Sudfloc as coagulant aid in raw water treatment in Mauritius
Coagulation experiments were done using raw water samples from two treatment plants (herein referred to LMTP and LNTP) in Mauritius in jar tests using Moringa oleifera (MO) extract and Sudfloc. Both coagulant aids reduced alum consumption. Sudfloc was required in low concentration as compared to crude extracts of MO. On samples from LMTP, salt extract of MO (MOSE) was six times more efficient ...
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Comparison of extracts and toxicities of organic compounds in drinking water concentrated by single and composite XAD resins
We compared extracts and toxicities of organic compounds (OCs) in drinking water concentrated by composite XAD-2/8 resin (mixed with an equal volume of XAD-2 and XAD-8 resins) with those extracted by single XAD-2 (non-polar) and XAD-8 (polar) resins. Drinking water was processed from raw water of the Han River and the Yangtze River in Wuhan section, China. The extraction efficiency of all ...
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An Evaluation of Hydrogen as a Carrier Gas in Gas Chromatography: FREE Whitepaper
Anthias Consulting has collaboratively written an application note on the use of hydrogen as a carrier gasfor the analysis and detection of pesticides in drinking water. The paper evaluates the use of an on-site generated hydrogen carrier gas vs. helium as the carrier gas for USEPA Method 551.1, which analyses the concentration of pesticides in drinking water by liquid-liquid extraction followed ...
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Sustainable flow rate measuring point for Renkums Beekdal - Case Study
Client Waterschap Vallei en Veluwe Country The Netherlands Watch the video Watch the video in which Marinus van Dijk of Water Board Vallei and Veluwe explains why they choose Eijkelkamp Soil & Water and NIVUS equipment for their flow monitoring. The Renkums Beekdal, located at the edge of the Veluwe, a region in the Province of Gelderland, the Netherlands, is a very interesting creek ...
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Drinking water treatment residuals as an amendment to alkaline soils: Effects on the growth of corn and phosphorus extractability
Abstract: Drinking water treatment residuals (alum) are waste products of water purification that have potential for environmental remediation as a soil amendment and a potential plant growth medium. In this study, the influence of added Drinking water treatment residuals on the extractability and availability of phosphorus to plants; determination of the agronomic rate of alum to different ...
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Evaluating USEPA Method 524.3 Utilizing Newly Permissible Method Modifications to Purge and Trap Techniques
Abstract Purge and Trap (P&T) concentration in conjunction with Gas Chromatography/Mass Spectrometry (GC/MS) is a widely used technique for the determination of Volatile Organic Compounds (VOCs). Due to the sensitivity requirements required with drinking waters, P&T is the recommended technique for VOC extraction. Recently, the United States Environmental Protection Agency (USEPA) ...
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NT Madras to Collaborate With Teerthaa, a Sustainable Technology Company Producing Air-to-Water Generators for Last 14 Years, to Develop `NERO`
An Optimized Desiccant Solar Still Device, 'NERO' will extract Potable Drinking Water from Atmospheric Air using Solar Thermal Energy Indian Institute of Technology Madras is going to collaborate with Teerthaa, a sustainable technology company, to develop a device that can generate potable water from atmospheric air. Called 'NERO/ the optimized desiccant solar still device will produce 4 to 5 ...
By AeroNero
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Analysis of pesticide residues in drinking water samples using solid-phase micro-extraction (SPME) coupled to a gas chromatography-electron-capture detector (GC-ECD)
The headspace solid-phase micro-extraction (HS-SPME) method with polydimethylsiloxane (PDMS, 100 μm) fiber is a cost-effective technique for the determination of different pesticide residues in environmental and biological samples followed by a gas chromatography-electron-capture detector (GC-ECD). In the present study more than 147 water samples collected in and around Lucknow city were ...
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Sustainable use of nature is good for the economy
Nature provides all kinds of goods and services that offer economic opportunities, such as a water, food, building materials and recreation areas. However, this 'natural capital' is under pressure due to the growing world population and increased economic prosperity. Businesses, civic organisations and governments are therefore looking for sustainable ways to profit from natural capital, now and ...
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Large Volume Splitless Injection Using an Unmodified Split/Splitless Inlet and GC-TOFMS for Pesticides and Brominated Flame Retardants
Abstract Large volume splitless injection for gas chromatography typically requires a special injection port, for example, a programmable temperature vaporizer (PTV), but an alternative setup using concurrent solvent recondensation–large volume splitless injection (CSR-LVSI) and a split/splitless injection port has been reported. This technique was used here, both with and without sample ...
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A new method for efficient detection of Cryptosporidium RNA by real-time reverse transcription-PCR with surfactants
Cryptosporidium is one of the most common causes of waterborne diseases worldwide. Its oocysts possess a robust wall that is extremely resistant to the chlorine used for potable water disinfection. The current procedures of nucleic acid extraction and purification, such as the freeze–thaw (F/T) method and the commercial kits, are time consuming and expensive. To this end, a surfactant ...
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A new immunomagnetic bead separation–surfactant extraction treatment protocol for rapid and sensitive quantitative PCR detection of Cryptosporidium parvum DNA
The Cryptosporidium oocyst is encased in a robust wall that is extremely resistant to detrimental environmental factors such as chlorine used to disinfect potable water. Therefore, extracting oocyst DNA is not a trivial undertaking. Standard procedures used to extract DNA from oocysts, such as freeze–thaw (F/T) methods and DNA purification kits, are time-consuming and expensive and are ...
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Proficiency test of non-target screening with gas chromatography mass spectrometry to confirm a detected contamination of raw and drinking water
Much of the water supply industry has implemented online monitoring and warning systems for chemical or biological contaminations. When a contamination is detected, further investigations are necessary to confirm or to cancel the initial alarm. The proficiency of a non-target screening approach with solid phase extraction and GCMS in full-scan mode was examined. A selection of pesticides and ...
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Manufacturer of Activated Carbon
Neelanjan Carbon is a technologically leading professional enterprise integrating science, industry and trading, specializing in the research, production and operation in the field of active carbon. The company produces over 100 tons of active carbon of different models, selling well in over 20 State municipalities directly under the Central Government and autonomous regions of India.With over 20 ...
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Mechanisms of post-supply contamination of drinking water in Bagamoyo, Tanzania
Access to household water connections remains low in sub-Saharan Africa, representing a public health concern. Previous studies have shown water stored in the home to be more contaminated than water at the source; however, the mechanisms of post-supply contamination remain unclear. Using water quality measurements and structured observations of households in Bagamoyo, Tanzania, this study ...
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Reference: Outstanding technology delivers outstanding potable water
Outstanding technology delivers outstanding potable water High-tech comes to the Sauerland region: To supply potable water, Stadtwerke Sundern uses state-of-the-art technology. When the time came to modernise their three waterworks, the first-class quality of ProMinent's products and systems was the deciding factor. Key figures Annual supply of 1.3 million cubic metres to around 30,000 ...
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