Mechanisms of Boron Removal with Electrocoagulation

2006 ◽  
Vol 3 (5) ◽  
pp. 350 ◽  
Author(s):  
Jia-Qian Jiang ◽  
Y. Xu ◽  
K. Quill ◽  
J. Simon ◽  
K. Shettle
Keyword(s):  
Drinking Water ◽  
World Health Organization ◽  
Solubility Product ◽  
Boron Concentration ◽  
Animal Health ◽  
World Health ◽  
Boron Removal ◽  
The World ◽  
Set Up ◽  
Health Organization

Environmental Context. Various environmental regulation organizations have set up standards or guidelines to regulate the boron concentration in drinking water, as a result of concern for human and animal health. In 2004, the World Health Organization Guidelines for Drinking Water Quality recommended boron values of no more than 0.5 mg L–1 in drinking water. Preliminary studies on boron removal with electrocoagulation have been carried out. However, in order to enhance boron removal using this method, and to meet the stringent guidelines set in place by the World Health Organization, there is a need to obtain a better understanding of how boron is removed from water by electrocoagulation. Abstract. This study aims to explore the mechanisms of boron removal by electrocoagulation (EC). The results demonstrate that adsorption and precipitation of boron by Al flocs are dominant mechanisms in boron removal using EC. The Al flocs that result from the EC process are found to be mainly composed of polymeric Al13 polymers (43%) and to have a long-lasting positive charge. These characteristics of the flocs contribute to the high levels of boron removal observed using EC. The maximum boron adsorption of the Al flocs is 200 mg g–1 and the solubility product constant (Ksp), which represents the boron precipitate Al(OH)2BO2·nH2O, is 2.6 × 10−40 (at 20°C).

scholarly journals Assessment of drinking water contamination in food stalls of Jashore Municipality, Bangladesh

2021 ◽  
Vol 11 (8) ◽  
Author(s):  
Molla Rahman Shaibur ◽  
Mohammed Sadid Hossain ◽  
Shirina Khatun ◽  
F. K. Sayema Tanzia
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
World Health Organization ◽  
Fast Food ◽  
Pathogenic Bacteria ◽  
Permissible Limit ◽  
World Health ◽  
Drinking Water Contamination ◽  
The World ◽  
Health Organization

AbstractThis study aimed to determine the quality of drinking water supplied in different types of food stalls in Jashore Municipality, Bangladesh. A total of 35 water samples were collected from different tea stalls, street side fast food stalls, normal restaurants and well-furnished restaurants. The water quality was evaluated by determining the distinct physical, chemical and biological parameters. The results revealed that the water used in the food stalls and restaurants for drinking purpose was in desired quality in terms of turbidity, electrical conductivity, pH, total dissolved solids, nitrate (NO3−), sulfate (SO42−), phosphate (PO43−), chloride (Cl−), sodium (Na) and potassium (K) concentrations. The values were within the permissible limit proposed by the Bangladesh Bureau of Statistics and the World Health Organization. Concentrations of calcium (Ca) and magnesium (Mg) found in several samples were higher than the World Health Organization standard. Iron (Fe) concentrations were higher than the permissible limit of the World Health Organization. Only 46% exceeded the permissible limit of Bangladesh Bureau Statistics. The threatening result was that the samples were contaminated by fecal coliform, indicating that the people of Jashore Municipality may have a greater chance of being affected by pathogenic bacteria. The drinking water provided in the street side fast food stalls was biologically contaminated. The findings demonstrate that the drinking water used in food stalls and restaurants of Jashore Municipality did not meet up the potable drinking water quality standards and therefore was detrimental to public health.

Protecting health from metal exposures in drinking water

2016 ◽  
Vol 31 (1) ◽  
Author(s):  
Margaret-Ann Armour
Keyword(s):  
Drinking Water ◽  
World Health Organization ◽  
World Health ◽  
Human Beings ◽  
Environmental Determinant ◽  
The World ◽  
Health Organization

AbstractDrinking water is essential to us as human beings. According to the World Health Organization “The quality of drinking-water is a powerful environmental determinant of health” (

scholarly journals Overview of Acrylamide Monitoring Databases

2005 ◽  
Vol 88 (1) ◽  
pp. 246-252 ◽  
Author(s):  
David Lineback ◽  
Thomas Wenzl ◽  
Ole P Ostermann ◽  
Beatriz de la Calle ◽  
Elke Anklam ◽  
...  
Keyword(s):  
World Health Organization ◽  
European Commission ◽  
Food Chain ◽  
Food Industry ◽  
World Health ◽  
Research Activities ◽  
The World ◽  
Set Up ◽  
Health Organization ◽  
The Web

Abstract Since high acrylamide levels in carbohydrate-rich food were reported in 2002, many research activities were started in order to gain knowledge on occurrence, formation, and prevention of this compound in food products. Among them, monitoring programs were conducted in many countries worldwide by official bodies as well as by the food industry. National and international bodies set up monitoring databases. In 2003, both the European Commission and the World Health Organization posted calls for data and placed their spreadsheets for the submission of data on the Web. The goal of the databases is to collect data for a reliable estimation of the exposure of consumers to acrylamide via the food chain. This paper describes the assessment of the data quality and outlines the composition of the data in the 2 databases, to date.

scholarly journals Physiochemical and bacteriological analyses of selected sachet water in central Monrovia, Liberia

2018 ◽  
Vol 7 (2) ◽  
pp. 30
Author(s):  
Sampson K. P. CHEA ◽  
Terrance Paye
Keyword(s):  
Drinking Water ◽  
World Health Organization ◽  
Viable Count ◽  
Reference Standards ◽  
World Health ◽  
Total Viable Count ◽  
The World ◽  
Health Organization ◽  
Sachet Water ◽  
Bacteriological Parameters

In developing nations of the world 80% of all diseases and over 30% of death are related to drinking water. Drinking water may become contaminated during collection, handling, storage and use. Since the introduction of factory based water, their consumptions have increased severely in Liberia. Therefore, it is essential to investigate the physiochemical and bacteriological parameters of sachet water brands sold in Central Monrovia in order to ascertain whether they conform to recommended standards of portable drinking-water by the World Health Organization (WHO). This study made used of random sampling. Six samples of seven brands of sachet water were purchased randomly from provision shops. The samples were transported to the National Standards Laboratory for physiochemical and bacteriological analyses. Physiochemical parameters such as calcium, fluoride, iron, lead, turbidity and pH were checked, while Total Viable Count, coliform, and Escherichia were checked as bacteriological parameters. The calcium level of the samples ranged from 4.60 – 17.8 Mg/L. All the samples had 0.00 Mg/L of fluoride. The iron level of the samples ranged from 0.11 – 0.39 Mg/L. The lead level of the samples ranged from 0.21 – 0.36 Mg/L. The pH range of the samples was from 7.00 – 7.01. The turbidity of the samples ranged from 0.00 – 3.74 NTU. Six of the samples showed to have 0.00 NTU for turbidity. Only sample 6 had value for turbidity. The level of turbidity measured 3.47 NTU. Sample 1, 2, 5 and 7 had no trace of viable count, coliform and Escherichia while sample 3, 4 and 6 show traces of viable count, coliform and Escherichia. Samples with Total Viable Count far above 0 Cfu/mL are considered unfit for portability. There were coliform and Escherichia detected in some samples, thereby making these samples not palatable. All of the samples had concentration of calcium. All of the samples had pH and fluoride that are in range with the reference standards of the World Health Organization (WHO) and Ministry of Health (MOH). All of the samples had lead and iron that were out of range of the reference standards. All of the samples showed a turbidity of 0.00 NTU except sample 3 which had turbidity of 3.74 NTU.

Emergency Preparedness and Disaster Relief Coordination Program of the World Health Organization (Pan American Health Organization, PAHO)

1985 ◽  
Vol 1 (S1) ◽  
pp. 300-301
Author(s):  
Claude De Ville de Goyet
Keyword(s):  
World Health Organization ◽  
Emergency Preparedness ◽  
Disaster Relief ◽  
Health Agency ◽  
World Health ◽  
Regional Office ◽  
The World ◽  
Pan American ◽  
Set Up ◽  
Health Organization

The Pan American Health Organization (PAHO) has two components: (1) The Pan American Sanitary Bureau (PASB), founded in 1902, serves as the health agency affiliated with the Organization of the American States (OAS); in 1947, the PASB became the Regional office of the World Health Organization for the Americas. (2) The Emergency Preparedness and Disaster Relief Coordination office.In October 1976, the Directing Council of PAHO, “anxious that the international assistance given to countries affected by natural disasters should be better coordinated, rational, and more effective”, requested that the Director set up a “disaster unit with instructions to define the policy of the Organization, to formulate a plan of action for the various types of disasters, to make an inventory of the human and other resources available, to train the necessary personnel, to prepare and disseminate the appropriate guidelines and manuals, and to promote operational research.” In March 1977, a permanent office for Emergency Preparedness and Disaster Relief Coordination was established at PAHO Headquarters in Washington, D.C.

World Health Organization

1962 ◽  
Vol 16 (1) ◽  
pp. 237-241 ◽  
Keyword(s):  
World Health Organization ◽  
Modern Society ◽  
World Health ◽  
New Delhi ◽  
The World ◽  
Republic Of The Congo ◽  
The Republic ◽  
Set Up ◽  
The Many ◽  
Health Organization

The fourteenth session of the Assembly of the World Health Organization (WHO) was held in New Delhi from February 7 through 24, 1961. In his address the President of the Assembly, Dr. Arcot Lakshmanaswami Mudaliar, stated that among the many international organizations set up by the UN, WHO occupied a foremost place in its efforts to improve the conditions of millions of people in all parts of the globe. Dr. Mudaliar pointed to the contributions of the WHO regional offices in bringing the work of the organization more directly into contact with the countries concerned. WHO had achieved its most spectacular successes in programs designed not merely to control but to eradicate diseases of which the causative organisms were well known and with respect to which effective steps could be taken—in this regard Dr. Mudaliar mentioned the malaria eradication campaign. Other diseases of a communicable nature—smallpox, cholera, several of the water-borne diseases, and many others carried by insects—could hopefully lend themselves to similar eradication programs. Dr. Mudaliar also referred to the work of WHO in areas of the world stricken by natural or man-made disaster, and in particular to the organization's emergency work in the Republic of the Congo (Leopoldville). As for the future tasks of WHO, the President of the Assembly observed that although tuberculosis had been one of the four diseases that had been given priority by the first WHO Assembly, much still remained to be done to control it; the results of domiciliary treatment carried out in the city of Madras, India, he continued, gave some promise of success in the control and treatment of the disease. Dr. Mudaliar also singled out leprosy as a disease the organization should try to eradicate, and mentioned the problems of mental illness stemming from the stress and strain of modern society as being worthy of attention.

scholarly journals Microbiological Analysis of Tube-Well Water in a Rural Area of Bangladesh

2001 ◽  
Vol 67 (7) ◽  
pp. 3328-3330 ◽  
Author(s):  
M. S. Islam ◽  
A. Siddika ◽  
M. N. H. Khan ◽  
M. M. Goldar ◽  
M. A. Sadique ◽  
...  
Keyword(s):  
Drinking Water ◽  
World Health Organization ◽  
Water Samples ◽  
World Health ◽  
Well Water ◽  
Microbiological Analysis ◽  
Tube Wells ◽  
The World ◽  
Tube Well ◽  
Health Organization

ABSTRACT Five tube-wells in Matlab, Bangladesh, were selected for analysis of selected biophysicochemical parameters. The results showed that all tube-well water samples contained zooplankton and bacteria. Results for some of the parameters were outside the accepted limits recommended by the World Health Organization for drinking water. It is concluded that water from tube-wells should be treated if used as drinking water.

scholarly journals Surveillance of tuberculosis in the WHO European Region 1995-1996

1998 ◽  
Vol 3 (11) ◽  
pp. 103-7 ◽  
Author(s):  
D Antoine ◽  
V Schwoebel ◽  
J Veen ◽  
M. C. Raviglione ◽  
H. L. Rieder ◽  
...  
Keyword(s):  
World Health Organization ◽  
Feasibility Study ◽  
World Health ◽  
European Region ◽  
The World ◽  
Set Up ◽  
Health Organization

The EuroTB programme for the surveillance of tuberculosis in Europe was set up in 1996 to collect, analyse, and disseminate data on tuberculosis cases notified in the World Health Organization (WHO) European Region. Following a feasibility study performed

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