Production of Clay-based Ceramic Filter for Water Purification

2021 ◽  
Vol 6 (7) ◽  
pp. 140-143
Author(s):  
A. S. Grema ◽  
I. M. Idriss ◽  
A. N. Alkali ◽  
M. M. Ahmed ◽  
M. H. Iyodo

The spread of Diseases like Cholera and Diarrhea, which leads to loss of lives in developing countries is commonly caused by use of contaminated water. In this study ceramic pot filters for rural area water purification were developed. The clay sample was tested for physical properties and the mixtures of the clay and sawdust were made in seven (7) proportions of 75/25, 70/30, 65/35, 60/40, 55/45, 50/50, 45/55. The soil tests conducted on the different portions of the clay and sawdust material revealed that the shrinkage of the sawdust blended clay reduced to the minimum of 6.3 compared to the pure clay with 13.7. A fluid dynamic test experiment on each filter was conducted; similarly total dissolved solids (TDS), pH and turbidity tests for both raw water and filtered water were conducted. From fluid dynamic test results, filter 50/50 % tends to have higher filtration rate compared to the other two filters. From the TDS, pH, and turbidity test, the results obtained show that the filtered water quality has fallen within the world health organization (WHO) standard. It can therefore be concluded that the filtered water is safe for consumption.

Work ◽  
2020 ◽  
Vol 67 (3) ◽  
pp. 523-527
Author(s):  
Maryam Feiz Arefi ◽  
Amin Babaei-Pouya ◽  
Mohsen Poursadeqiyan

BACKGROUND: Quarantine is considered as an effective solution in the early stages of an epidemic. In the case of the coronavirus epidemic, quarantine was also recommended and implemented as a significant guideline to prevent the disease. However, despite the benefits of quarantine, there are also complications and problems. OBJECTIVE: The present study aimed to investigate the health effects of quarantine during the COVID-19 pandemic. METHODS: This study was conducted as a literature review through searching the databases Google Scholar, PubMed, and Science Direct for papers published before July 2020. The research was conducted based on the keywords “Coronavirus,” “COVID-19,” and “quarantine.” The references of the papers were also reviewed to find the ones not found in the databases. The guidelines published by reputable organizations such as the World Health Organization (WHO) and Centers for Disease Control and Prevention (CDC) were used in this study. RESULTS: Although quarantine is applied as an important and primary solution in the outbreak of epidemics, in cases of pandemics, it may not be free of negative effects on individuals and public health. However, because of the need to reopen and restart social and economic activities, some changes should be made in lifestyles and work activities. Using cyberspace and telework can be helpful. As the findings showed, COVID-19 bubbles can be used to restore social communications. CONCLUSION: Using masks, avoiding unnecessary gatherings, complying with personal and social hygiene, and respecting social distancing can be valuable solutions that, if implemented properly, can decrease the rate of the disease significantly. It is also emphasized that quarantine is still necessary and important as the best solution for sick people and individuals who are suspected carriers of the disease.


Author(s):  
Selina Natalia ◽  
Felicia Imanuella Thorion ◽  
Luky Adlino ◽  
Clifford Eltin John ◽  
Andree Kurniawan ◽  
...  

Objective : Coronavirus disease 2019 (COVID-19) has been declared as an international public health emergency by the World Health Organization (WHO), with outbreaks in over 200 countries and causing over 390,000 deaths globally. ACE-2 receptors are highly expressed in the upper and lower gastrointestinal system, providing a prerequisite for SARS-CoV-2 infection in the gastrointestinal tract. In addition, over half of the COVID-19 patients have viral nucleic acid detected in their feces and almost one-quarter of the cases, the stool samples test positive even when respiratory samples are negative. The aim of this systematic review is to summarize literature and to evaluate the clinical characteristics of patients with positive viral RNA stool test for COVID-19 and if there is a possibility of fecal-oral transmission of SARS-CoV-2 virus.Method : This systematic review has been registered in PROSPERO (CRD42020183049). A systematic search of the literature for observational study and randomized control trial was conducted in PubMed central and Google Scholar through May 5th, 2020. Three reviewers independently searched and selected. The risk of bias was evaluated using Newcastle-Ottawa Quality assessment tool.Results : 340 articles were screened, then from which eight articles were selected. Of eight articles that were included in this study, we sought for three main categories of the clinical manifestation; gastrointestinal, respiratory, and others. Each study was reviewed systematically to gain demographic data and evidence regarding the possibility of fecal oral transmission in SARS-CoV-2. Two studies reported prolongation of positive stool test results after the respiratory specimen conversion to negative which support the theory of fecal oral transmission.Conclusion : In conclusion, diarrhea, cough, and fever are the most common clinical manifestations in COVID-19 patients with positive RNA stool test results. Fecal oral transmission may be possible due to the ACE-2 receptors in the lining of the gastrointestinal tract. RNA stool test should be used as addition in discharging COVID-19 patients.


1978 ◽  
Vol 41 (12) ◽  
pp. 965-973 ◽  
Author(s):  
JOHN M. GASAWAY

Certain pesticide residues reabsorbed into milk (or water) contents when stored in LEXAN® resin and polyethylene plastic returnable milk containers that had been exposed to diluted pesticide products, washed, and subsequently filled. The significance of these laboratory test results is comprehensively discussed by attempting to characterize the nature of exposure to pesticide residues from a washed returnable dairy container, as opposed to exposure to milk containing pesticide residues of non-container origin. Laboratory findings are compared to actual public use experience with returnable plastic dairy containers. A hazard assessment is presented, which includes a comparison of quantities of pesticide residues found extracting with existing Federal milk tolerance standards, food tolerance standards, unavoidable contaminant food additive regulations, World Health Organization and Safe Drinking Water Committee acceptable daily intake values. The probability of purchase of milk that is contaminated with pesticide residues, where the washed returnable dairy container is the source, is presented.


2020 ◽  
Vol 2020 (4) ◽  
Author(s):  
Abhiman Cheeyandira

Abstract Corona virus pandemic has affected all the 50 states in the USA. States such as NY, CA and WA being the most affected. According to the Centers for Disease Control and Prevention (CDC) website, as of 28 March 2020, the total number of cases in the USA is over 103 300 and number of deaths to 1668. In the coming weeks, COVID-19 rates are expected to begin skyrocketing and hit a peak in late April/May/June given lessons learned from China, Italy and others. COVID-19 has been declared a pandemic by the World Health Organization (WHO) as confirmed cases approach 575 444 patients with 26 654 deaths across over 160 countries, as of 28 March 2020. There is a lot of impact on management of the urgent and emergent cases. This article highlights the changes that are being made in delivering urgent and emergent surgical care during the pandemic.


2020 ◽  
Vol 35 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Patience Erick

AbstractAccording to the World Health Organization (WHO), 5.9 million children under age 5 died in 2015, and globally, the main causes of child deaths are pneumonia, prematurity, intrapartum-related complications, neonatal sepsis, congenital anomalies, diarrhoea, injuries and malaria. In 2012, it was reported that one quarter of childhood deaths and disease burden could have been prevented by reducing environmental risks. Children are vulnerable to environmental risks such as air pollution, inadequate water, sanitation and hygiene, hazardous chemicals and waste, radiation, climate change, as well as emerging threats like e-waste. They are particularly vulnerable to these threats due to their developing organs and immune systems, smaller bodies and airways. In 2010, there were 132,989 in-patient morbidities. This number represents a 5.2% increase from the 126,381 registered in 2009. The major causes of infant morbidity and morbidity in children under 5 years old were diarrhoea and pneumonia. Although morbidity cases increased in 2010, there was a 6% decline in in-patient mortality from 6952 registered deaths in 2009 to 6535 deaths in 2010. Pneumonia and diarrhoea were the major causes of both infant and child mortalities. In Botswana, various environmental risk factors such as contaminated water, air and soil pollution and poor waste management have been associated with children’s environmental health (CEH). The outbreaks of diarrhoea in the country have always been associated with contaminated water. In the recent outbreak of diarrhoea in August 2018, laboratory investigations attributed the outbreak of diarrhoea to rotavirus. Children (1–6 years) living in areas with high levels of traffic congestion (living near a busy road) had higher levels of lead in their blood than those who lived in areas with less traffic. Poor waste management may lead to contamination of air, soil and water. CEH has not been given the attention it deserves in Botswana. It is, therefore, time to raise awareness on the subject. Health care workers, for example, need to be trained on diseases affecting children that are due to environmental exposures. Communities as well need to be trained on environmental factors that are prevalent in their areas and the effects of those on children’s health. It is important that research should be conducted on CEH in Botswana. At the time of compiling this report, the author was not aware of any CEH network in the country or networks in the region. To raise awareness and advocacy of CEH, there is a need for the establishment of a CEH network in the country or to participate in networks in the regions.


2020 ◽  
Vol 31 (11) ◽  
pp. 467-471
Author(s):  
Anne Cartwright

Errors in the prescribing, dispensing and administration of insulin can cause serious harm. Anne Cartwright raises awareness of the risks In 2010 National Patient Safety Alerts produced a rapid response report ‘Safer Use of Insulin’ in response to an increasing number of medication incidents leading to severe harm or death as a result of errors with insulin therapy. In 2017 the World Health Organization launched a global initiative to reduce avoidable medication error by 50% over 5 years. This article aims to raise awareness of the risks of insulin therapy, the common mistakes that can be made in the prescribing, dispensing and administration of insulin, and to inform health professionals who are involved in caring for people on insulin therapy how to reduce the risk of potential harm.


2015 ◽  
Vol 10 (2) ◽  
pp. 361-370 ◽  
Author(s):  
K. Matthies ◽  
H. Bitter ◽  
N. Deobald ◽  
M. Heinle ◽  
R. Diedel ◽  
...  

People in rural developing areas often depend on point-of-use water treatment for safe drinking water. A very popular and efficient technology for this is the use of ceramic filters, as promoted by the non-governmental organization Potters for Peace. These filters are already used in many countries worldwide, including Indonesia, where they are manufactured in Bandung, Java by Pelita Indonesia. The filters are made of local clay and combustible material, and coated with silver after firing. However, data available on them are very scarce. The structure, composition, and physico-chemical and microbiological performance of the filter were examined. Pore sizes mostly ranged from 1 to 40 µm and flow rate was about 1.3 L/h. Silver, arsenic and manganese were leaching from the filter in remarkable concentrations. While values for silver were about 0.01–0.02 mg/L, manganese was washed out after a few liters and leaching of arsenic fell below 0.02 mg/L after filtering some liters. With a log reduction of 3–5, efficiency in bacteria reduction was satisfactory in contrast to virus removal which was not sufficient according to the World Health Organization guidelines, with a log reduction below 1.


2020 ◽  
Vol 37 (2) ◽  
pp. 21-44
Author(s):  
Matthew Krupoff ◽  
Ahmed Mushfiq Mobarak ◽  
Alexander van Geen

The World Health Organization has labeled the problem of arsenic contamination of groundwater in South Asia as “the largest mass poisoning in human history.” Various technical solutions to the problem fall into one of two broad categories: (i) cleaning contaminated water before human consumption and (ii) encouraging people to switch to less contaminated water sources. In this paper, we review research on the behavioral, social, political, and economic factors that determine the field-level effectiveness of the suite of technical solutions and the complexities that arise when scaling such solutions to reach large numbers of people. We highlight the conceptual links between arsenic-mitigation policy interventions and other development projects in Bangladesh and elsewhere, as analyzed by development economists, that can shed light on the key social and behavioral mechanisms at play. We conclude by identifying the most promising policy interventions to counter the arsenic crisis in Bangladesh. We support a national well-testing program combined with interventions that address the key market failures (affordability, coordination failures, and elite and political capture of public funds) that currently prevent more deep-well construction in Bangladesh.


2017 ◽  
Vol 4 (2) ◽  
Author(s):  
Borale Yogesh Prabhakar ◽  
Dr. Khalane Shashikant Hari

Aim: According to the world health organization, health means the person is not only free from any physical and psychological illness but (s)he should be fit socially too as well as no health without mental health. The present study aimed to investigate the level and difference of mental health and mobile phone addiction among adolescences. Methods: This study was done on 400 adolescences (200 boy and 200girl students) through random sampling technique. Mithila Mental Health Status Inventory and mobile phone addiction were used to collect data. Data were analyzed by using Mean, S.D, t-test and f-test. Results: Result proves it there is interaction affect among gender and level of mobile phone addiction in terms of mental health as well as no significant difference in mental health among adolescence between low mobile phone addiction and average mobile phone addiction level.


2014 ◽  
Vol 11 (1) ◽  
pp. 6-8
Author(s):  
Jorge J. Rodriguez

Mental illnesses are a growing health problem and reducing the treatment gap in Latin America and the Caribbean is a great challenge. Evaluations conducted by the Pan American Health Organization (PAHO) and World Health Organization (WHO) have shown that the responsiveness of health services is still limited. Nonetheless, from an evaluation of how mental health reform has progressed in the region following the historical benchmark of the Caracas Declaration (1990), it is clear that – despite the limitations, shortcomings and challenges – significant progress has been made in most countries. This paper briefly reviews this progress.


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