metals in water Articles | Environmental XPRT

Hydrogel-swelling driven delivery device for corrosion resistance of metal in water

Corrosion on steel and copper pipes in industry can trigger pollution and weakness due to undesired chemical and biochemical reactions. Too much or too little inhibitor can decrease its efficiency, even causing waste and pollution. In this contribution, an innovative delivery device driven by hydrogel swelling, mainly consisting of a semi-permeable membrane, a hydrogel-swelling force drive ...

Sep. 1, 2015

By IWA Publishing

Bioaccumulation of heavy metals in organs of fresh water fish Cyprinus carpio (Common carp)

The objective of the present study is to determine the bioaccumulation of heavy metals in various organs of the fresh water fish exposed to heavy metal contaminated water system. The experimental fish was exposed to Cr, Ni, Cd and Pb at sublethal concentrations for periods of 32 days. The elements Cd, Pb, Ni and Cr were assayed using Shimadzu AA 6200 atomic absorption spectrophotometery and the ...

Apr. 1, 2008

By Center for Environment and Energy Research & Studies (CEERS)

Investigation of the use of TiO2 doped with metal ions in water disinfection

This research was conducted to improve titanium dioxide by transition metal doping using cooper. Sol gel method was used to prepare metal doped TiO2. Titanium isopropoxide and commercial TiO2 P25 were employed as catalyst precursor. The role played by the varied preparation parameters such as doping level and pH of solution discussed with respect to the final photoreactivity. Photoreactivity was ...

Dec. 1, 2010

By IWA Publishing

ANDalyze DNA sensor Technology

Video describing the use of DNA as a sensor for detecting heavy metal ions in ...

Oct. 1, 2010

By ANDalyze, Inc.

Removal of cadmium ion from wastewater by carbon-based nanosorbents: a review

A green environment and a healthy life are dream projects of today's science and technology to save the world. Heavy metal ions in water affect both environment and human health. Cadmium has been identified as one of the heavy metals that causes acute or chronic toxic effects if ingested. Increasing use of cadmium in different technological fields has raised concern about its presence ...

Feb. 27, 2015

By IWA Publishing

Heavy metal levels in tap water in Batina Region, Oman

Most household in Batina depend on private wells for their fresh water supplies. The quality of such water is not regulated or tested by authorities and, therefore, consumers' health might be at risk if water is contaminated. We assessed the contribution of some heavy metals to water pollution. Water samples from 364 houses were collected and analysed for levels of lead, chromium, nickel and ...

Nov. 8, 2007

By Inderscience Publishers

Distribution of mercury in the water and bottom sediment of the J.A. Alzate Dam, Mexico

In this paper, mercury concentration in the soluble, particulate and total fractions of water and in the sediment from the Jose Antonio Alzate Dam in the State of Mexico was evaluated using neutron activation analysis in order to determine the bioavailability and distribution of this metal. Sampling was carried out on three separate seasons – cold dry season, hot dry season and rainy season – ...

Mar. 3, 2006

By Inderscience Publishers

Evaluation of Drinking Water Quality by EPA-Certified Graphite Furnace AAS

With the development of residential homes in all parts of the World, there is a need for accurate, high-volume measurements of various Metals in the Drinking Water that people in these residences will live on. Accurate measurements of specific metals will determine the types of pipes used, the lifetime of the plumbing, the potential for mineral stains on porcelain, and more importantly, ...

Jan. 1, 2006

By Buck Scientific Inc

Using LC50 for metals as Water Quality indicator

One of the causes of low yields or productive deficiencies, in the stage of production of fresh water, more gifts in the aquaculture industry of salmon in Chile, has its origin in the presence of naturally occurring metals, both in bodies of fresh water as in deep wells. The toxicity of metals such as Aluminum and Copper, others, has been described previously and their presence in waters of our ...

Mar. 12, 2016

By Aquaknowledge

Water pollution study of the Shirvane and Nerul lakes situated at Nerul, Navi Mumbai, India

The areas of study selected in the present investigation are Shirvane and Nerul lakes situated at Nerul which is considered as the queen of Navi Mumbai, the city on the west coast of the Indian state of Maharashtra. The lake areas receive domestic raw sewage from surrounding habitation; so also the activities like cattle and cloth washing, bathing, religious activities like idol immersion etc. ...

Mar. 7, 2011

By Inderscience Publishers

Accounting for metal bioavailability in assessing water quality: A step change?

Bioavailability of metals to aquatic organisms can be considered to be a combination of the physicochemical factors governing metal behavior and the specific pathophysiological characteristics of the organism's biological receptor. Effectively this means that a measure of bioavailability will reflect the exposures that organisms in the water column actually “experience”. This is important ...

Jan. 25, 2016

By John Wiley & Sons, Ltd.

Cadmium ion adsorption by amine-modified activated carbon

Cadmium (Cd) is one of the most toxic metals found in water and sediments. In the effort to develop an effective adsorbent for aqueous Cd removal, activated carbon (AC) was modified with an amino-terminated organosilicon (3-aminopropyltrimethoxysilane, APS). Response surface methodology was used to optimize selected operational parameters of adsorption of aqueous Cd by considering a central ...

Jan. 24, 2017

By IWA Publishing

High-performance cellulose acetate/polysulfone blend ultrafiltration membranes for removal of heavy metals from water

Neat cellulose acetate (CA) and CA/polysulfone (PSf) blend ultrafiltration membranes in the presence of polyvinylpyrrolidone as a pore former were prepared via a phase inversion technique. The prepared membranes were characterized by Fourier transform infrared, scanning electron microscopy, mechanical strength, water content, porosity, permeate flux and heavy metals (Pb2+, Cd2+, Zn2+ and ...

Mar. 1, 2017

By IWA Publishing

Assessment of toxic metals in water and sediment of Pasur River in Bangladesh

This study was conducted to assess the levels of toxic metals like arsenic (As), chromium (Cr), cadmium (Cd), and lead (Pb) in water and sediments of the Pasur River in Bangladesh. The ranges of Cr, As, Cd, Pb in water were 25.76–77.39, 2.76–16.73, 0.42–2.98 and 12.69–42.67 μg/L and in sediments were 20.67–83.70, 3.15–19.97, 0.39–3.17 and 7.34–55.32 mg/kg. The level of studied metals in water ...

Jan. 16, 2018

By IWA Publishing

Study on water pollution along the Kukshet Lakes of Nerul, Navi Mumbai, India with special reference to pollution due to heavy metals

Monitoring and assessment of fresh water has become an environmental concern due to the contamination by human kind, thereby decreasing the suitability of the fresh water. The Kukshet Lake, which is the study area of the present investigation receives domestic raw sewage from surrounding habitation; so also the activities like cattle washing, cloth washing, bathing, religious activities like idol ...

May 23, 2011

By Inderscience Publishers

Study on the determination of heavy metals in water samples with ultrasound-assisted dispersive liquid–liquid microextraction prior to FAAS

A new, simple and rapid method based on dispersive liquid–liquid microextraction (DLLME) was developed for extracting and preconcentrating copper (Cu), nickel (Ni), lead (Pb) and cadmium (Cd) in water samples prior to flame atomic absorption spectrometry (FAAS) analysis. 1-(2-thiazolylazo)-naphthol (TAN) was used as chelating reagents, and non-ionic surfactant Triton X-114 and CCl4 as ...

Nov. 20, 2012

By IWA Publishing

Effects on the zooplankton community of pollutant disposal into the Jose Antonio Alzate dam, Mexico

To study the influence of pollutants on water quality from the Jose Antonio Alzate dam in Mexico, plankton samples were taken from locations along an approximately 9 km in a downstream direction. Determinations were made of pH, dissolved oxygen, biochemical oxygen demand, transparency, conductivity, and metal levels in plankton. The dam waters were generally hard, with high levels of electrolytes ...

Oct. 29, 2004

By Inderscience Publishers

Challenges in addressing variability of lead in domestic plumbing

Current data indicates that lead exposure is of concern even at low concentrations. Corrosion is an important problem in drinking water because it can affect public health due to leaching of lead or other metals into the drinking water. For this reason, a corrosion control program is an important measure to help mitigate exposure to lead in drinking water. The biggest challenge that remains in ...

Dec. 1, 2010

By IWA Publishing

Monitoring Metal Contamination in Water

Metal contamination in drinking and source water has proven to have economic and health impacts on the human race. Regulatory agencies understand the importance of remediating metal contamination in our water supply to ensure safe consumption of drinking water. In order to properly remediate our water supplies, one must first determine cause of contamination and the source of the problem. ...

May 26, 2014

By IWA Publishing

Removal of chromium (vi) from aqueous solution by ulmus leaves

The presence of heavy metals in thinking water sources and in edible agricultural crops can be harmful to human. It is well known that heavy metals can be toxic, e.g. they damage nerves, liver and bones and they block functional groups of vital enzymes (Ewan and Pamphlet, 1996). In the recent years, increasing awareness of water pollution and its far reaching effects has prompted efforts towards ...

Mar. 28, 2006

By University of Tehran

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