Groundwater Arsenic Articles on Environmental XPRT

Groundwater arsenic in Chimaltenango, Guatemala

In the Municipality of Chimaltenango, Guatemala, we sampled groundwater for total inorganic arsenic. In total, 42 samples were collected from 27 (43.5%) of the 62 wells in the municipality, with sites chosen to achieve spatial representation throughout the municipality. Samples were collected from household faucets used for drinking water, and sent to the USA for analysis. The only site ...

Sep. 25, 2014

By IWA Publishing

Plant algae method for arsenic removal from arsenic contaminated groundwater

Field studies were carried out in Urumqi River Basin in Northwest China. The study focused on experimentation on a plant algae method that was tested by taking various water chemistries into consideration. The results from a greenhouse experiment evaluated for four doses of P (0, 100, 200, and 300 μmol/L) using two ferns (30 and 60 day old) on 15 L of contaminated groundwater per plant revealed ...

Feb. 1, 2012

By IWA Publishing

Slow arsenic poisoning of the contaminated groundwater users

This paper gives impact of Arsenic contaminated water on human health as well as overview of the extent and severity of groundwater arsenic contamination in Bangladesh. Scalp hair is the most important part of the human body to monitor the accumulation of this type of poison. Therefore, an experiment has been carried out by Neutron Activation Analysis (NAA) at Atomic Energy Research Establishment ...

Oct. 1, 2006

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

Proven alternatives for aboveground treatment of arsenic in groundwater

This issue paper identifies and summarizes experiences with proven aboveground treatment alternatives for arsenic in groundwater, and provides information on their relative effectiveness and cost. The information contained in this paper can also be found in the report “Arsenic Treatment Technologies for Soil, Waste, and Water”, EPA542-R-02-004 (Ref. 1.12), which provides cost and ...

Oct. 1, 2002

By Absolute Systems Inc.

Arsenic Removal

The Arsenic Removal ProcessArsenic, a naturally occurring element, is found throughout the environment; for most people, food is the major source of exposure. Acute (short-term) high-level inhalation exposure to arsenic dust or fumes has resulted in gastrointestinal effects (nausea, diarrhea, abdominal pain); central and peripheral nervous system disorders have occurred in workers acutely ...

Apr. 16, 2007

A Trace of Arsenic

The cans of baby formula invaded Brian Jackson’s Dartmouth College lab late in 2010. His team picked up an armful of popular brands at the food co-op in Hanover, N.H. Then another armload. Eventually Jackson had a cabinet full of the brightly labeled canisters. Today, he still keeps a few in his office. Not as clutter — that’s not his style. He just likes to keep his toxicology ...

Oct. 1, 2013

By Freytech Inc.

Mathematical model predicting arsenic bioleaching in groundwater treatment

In the Southeast Asia region, arsenic contamination of groundwater has been reported in several countries and a large number of arsenic treatment units were installed in many regions. Microbial activity can greatly affect the mobilization of arsenic under anaerobic conditions when coupled with the oxidation of organic matter. In this study, a mathematical model was developed to predict the ...

Dec. 16, 2012

By IWA Publishing

The effectiveness of arsenic remediation from groundwater in a private home

Abstract Private wells are the source of drinking water for approximately 15% of households in the United States, but these wells are not regulated or monitored by government agencies. The well waters can contain arsenic, a known carcinogen that occurs in groundwater throughout the nation at concentrations that can exceed the Maximum Contaminant Level defined by the U.S. Environmental ...

Jan. 1, 2009

By Adedge Water Technologies, LLC

Characterisation of arsenic contamination in groundwater by statistical methods

Statistical investigation on groundwater arsenic concentration data of southwest Bangladesh was performed. Two data sets of 1998–99 and 2002–03 were selected for this analysis. Summary statistics of the data shows that the mean concentration exceeds the Bangladesh limit (0.05 mg/l) in all areas. Normality of arsenic concentration data was checked by frequency histogram, skewness coefficient and ...

Oct. 3, 2012

By Inderscience Publishers

Health and socioeconomic effects of groundwater arsenic contamination in rural Bangladesh

This report discusses the health and socioeconomic problems that have recently emerged in the Bangladesh countryside because of arsenic contamination of the groundwater. A survey found that men in rural households are generally found to be more susceptible to arsenicosis than women. The survey also indicated that villagers with lower annual income are more likely to experience arsenicosis. About ...

May 1, 2008

By National Environmental Health Association (NEHA)

Efficacy of arsenic filtration by Kanchan Arsenic Filter in Nepal

Groundwater arsenic contamination has caused a significant public health burden in lowland regions of Nepal. For arsenic mitigation purposes, the Kanchan Arsenic Filter (KAF) was developed and validated for use in 2003 after pilot studies showed its effectiveness in removing arsenic. However, its efficacy in field conditions operating for a long period has been scarcely observed. In this study, ...

Sep. 25, 2014

By IWA Publishing

Hand-pump subsurface arsenic removal: the effect of groundwater conditions and intermittent operation

Hand-pump subsurface arsenic removal (SAR) has been investigated in rural Bangladesh with different groundwater conditions and intermittent operation modes. Multiple injection-abstraction cycles were performed after injection of 1 m3 of aerated water. From these experiments it can be concluded that hand-pump SAR, in the traditional injection-abstraction design, does not provide drinking water ...

Feb. 18, 2014

By IWA Publishing

Arsenic in Bangladesh and Perth

This study details the the Arsenic problem in ground water from Bangladesh and how the PDV6000plus can be used to monitor the Arsenic levels in ground water wells. Contains comparison data with inductively coupled plasma mass spectrometer (ICPMS) for groundwater samples in Perth, Western ...

Mar. 1, 2007

By Modern Water - Monitoring Division

The costs of small drinking water systems removing arsenic from groundwater

The US Environmental Protection Agency (EPA) conducted an Arsenic Demonstration Program whereby the Agency purchased, installed, and evaluated the performance and cost of 50 small water arsenic removal treatment systems in the USA. A major goal of the program was to collect high-quality cost data (capital and operational and maintenance (O&M)) from the long-term operation (1–4 ...

May 11, 2015

By IWA Publishing

Removal of arsenic from contaminated groundwater with application of iron electrodissolution, aeration and sand filtration

The results from a new water treatment system for arsenic removal are presented. The technology is based on the employment of an electrolytic iron dissolution and efficient aeration procedure prior to sand filtration. The treatment was introduced and investigated in a pilot scale plant and full scale waterworks. The pilot scale results showed the potential for efficient arsenic removal from ...

Jun. 12, 2014

By IWA Publishing

Arsenic removal from groundwater by ion exchange and adsorption processes: comparison of two different materials

Among the different technologies for reducing arsenic concentration in drinking water, adsorption has demonstrated in many cases to be superior in terms of performance and costs. However, there are numerous types of commercial adsorbents potentially capable of treating arsenic-contaminated groundwater. The present paper compares arsenic uptake efficiency of two different commercial media, one ...

Apr. 28, 2015

By IWA Publishing

Arsenic removal from groundwater by Anjili tree sawdust impregnated with ferric hydroxide and activated alumina

Arsenic is a toxic element found naturally in groundwater. Due to its carcinogenicity, risk for heart diseases and diabetes, arsenic needs to be removed from groundwater for potable application. ‘Anjili’ tree sawdust was chemically modified with ferric hydroxide and activated alumina (SFAA) and used as an adsorbent for the removal of arsenic from groundwater. The adsorbent was characterized ...

Aug. 10, 2015

By IWA Publishing

Investigating and mapping spatial patterns of arsenic contamination in groundwater using regression analysis and spline interpolation technique

The present study investigates the hypothesis that arsenic concentrations correlate with tubewell depth, and examines the effectiveness of spline interpolation, specifically completely regularized spline (CRS) and spline with tension (SWT) in estimating the magnitude of arsenic contamination in groundwater in Thanh Tri, a densely populated district located in the southern part of Hanoi City, ...

Aug. 29, 2013

By IWA Publishing

Optimization of oxide coating process on quartz sand for arsenic (III) removal from groundwater

This paper presents optimization of various oxide coating processes on quartz sand surface. The chemical characteristics of quartz sand collected from the Yamuna river, Allahabad, India, shows 82.022% SiO2 besides other oxides. The optimal coating temperature was 60°C; optimal pHcoating≈0.5; optimal heating time was 60 hours and percentage iron salt [Fe(NO3)3·9H2O] was 8–10% w/w for iron oxide ...

Mar. 1, 2011

By IWA Publishing

Design of dual water supply system using rainwater and groundwater at arsenic contaminated area in Vietnam

Fresh water, a renewable but limited resource, is scarce in many areas of the developing world. This paper proposes a dual water supply consisting of both rainwater and groundwater to provide sustainable water for an arsenic contaminated area. In this paper, a novel model has been developed based on rainfall variance. A rainwater harvesting (RWH) system can obtain optimal performance by changing ...

Nov. 6, 2014

By IWA Publishing

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