Abstract:
:The contamination of groundwater sources by pathogenic bacteria poses a public health concern to communities who depend totally on this water supply. In the present study, potentially low-cost filter materials coated with silver nanoparticles were developed for the disinfection of groundwater. Silver nanoparticles were deposited on zeolite, sand, fibreglass, anion and cation resin substrates in various concentrations (0.01 mM, 0.03 mM, 0.05 mM and 0.1 mM) of AgNO(3). These substrates were characterised by SEM, EDS, TEM, particle size distribution and XRD analyses. In the first phase, the five substrates coated with various concentrations of AgNO(3) were tested against E. coli spiked in synthetic water to determine the best loading concentration that could remove pathogenic bacteria completely from test water. The results revealed that all filters were able to decrease the concentration of E. coli from synthetic water, with a higher removal efficiency achieved at 0.1 mM (21-100%) and a lower efficiency at 0.01 mM (7-50%) concentrations. The cation resin-silver nanoparticle filter was found to remove this pathogenic bacterium at the highest rate, namely 100%. In the second phase, only the best performing concentration of 0.1 mM was considered and tested against presumptive E. coli, S. typhimurium, S. dysenteriae and V. cholerae from groundwater. The results revealed the highest bacteria removal efficiency by the Ag/cation resin filter with complete (100%) removal of all targeted bacteria and the lowest by the Ag/zeolite filter with an 8% to 67% removal rate. This study therefore suggests that the filter system with Ag/cation resin substrate can be used as a potential alternative cost-effective filter for the disinfection of groundwater and production of safe drinking water.
journal_name
Int J Environ Res Public Healthauthors
Mpenyana-Monyatsi L,Mthombeni NH,Onyango MS,Momba MNdoi
10.3390/ijerph9010244subject
Has Abstractpub_date
2012-01-01 00:00:00pages
244-71issue
1eissn
1661-7827issn
1660-4601pii
ijerph9010244journal_volume
9pub_type
杂志文章abstract::Since the introduction of Magnetic Resonance Imaging (MRI) as a diagnostic technique, the number of people exposed to electromagnetic fields (EMF) has increased dramatically. In this review, based on the results of a pioneer study showing in vitro and in vivo genotoxic effects of MRI scans, we report an updated survey...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章,评审
doi:10.3390/ijerph6061778
更新日期:2009-06-01 00:00:00
abstract::Using the Yellow-River-Source National Park (YRSNP) as a study site, an unmanned aerial vehicle (UAV) remote sensing and line transect method was used to investigate the number of wild herbivorous animals and livestock, including the kiang (Equus kiang) and Tibetan gazelle (Procapra picticaudata). A downscaling algori...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph16224402
更新日期:2019-11-11 00:00:00
abstract::As the most significant solid residue generated in the oil production industry, upstream oily sludge was regarded as hazardous waste in China due to its toxicity and ignitability, and to date, the incineration process has been considered the most efficient method in practice. Due to the complicated components of oily ...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph16030384
更新日期:2019-01-29 00:00:00
abstract::Active traveling to a daily occupation means that an individual uses an active way of traveling between two destinations. Active travel to work or other daily occupations offers a convenient way to increase physical activity levels which is known to have positive effects on several health outcomes. Frequently used con...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph13050455
更新日期:2016-04-28 00:00:00
abstract::Although many developing countries use harvested rainwater (HRW) for drinking and other household purposes, its quality is seldom monitored. Continuous assessment of the microbial quality of HRW would ensure the safety of users of such water. The current study investigated the prevalence of pathogenic Escherichia coli...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph15050892
更新日期:2018-05-01 00:00:00
abstract::In low- and middle-income countries, noise exposure and its negative health effects have been little explored. The present study aimed to assess the noise exposure situation in adults living in informal settings in the Western Cape Province, South Africa. We conducted continuous one-week outdoor noise measurements at ...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph14101262
更新日期:2017-10-20 00:00:00
abstract::Around 90% of all fatal and non-fatal unintentional injuries occur in low- and middle-income countries (LMICs). The magnitude of unintentional injuries is unclear due to limited research and data. This paper describes the burden of lesser-known injuries (LKIs-cut injuries, unintentional poisoning, machine injuries, el...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph16183366
更新日期:2019-09-12 00:00:00
abstract::Increased reproductive success is among the most commonly proposed adaptive functions of romantic love. Here, we tested if hormonal changes associated with falling in love may co-vary with hormonal profiles that predict increased fecundity in women. We compared blood serum levels of estradiol (E2, E2/T), luteinizing h...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph16214224
更新日期:2019-10-31 00:00:00
abstract::Spatial differences in urban environmental conditions contribute to health inequalities within cities. The purpose of the paper is to map environmental inequalities relevant for health in the City of Dortmund, Germany, in order to identify needs for planning interventions. We develop suitable indicators for mapping so...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph13070711
更新日期:2016-07-13 00:00:00
abstract::Little information is available on relationships between the biophysical environment and antibiotic resistance. This study was conducted to investigate the antibiotic resistance pattern of Escherichia coli isolated from child stool samples, cow-dung and drinking water from the non-coastal (230 households) and coastal ...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph9030746
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND:The study of injuries stemming from sacroiliac dysfunction in athletes has been discussed in many papers. However, the treatment of this issue through thrust and muscle-energy techniques has hardly been researched. The objective of our research is to compare the effectiveness of thrust technique to that of e...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph17124490
更新日期:2020-06-22 00:00:00
abstract::Despite the growing social alarm generated by the recurrent news concerning violent episodes involving youth gangs, systematic research in Italy in this field, especially within a psychological framework, is still limited. Following a social-ecological approach, the present study aimed at investigating the role of sel...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph17238791
更新日期:2020-11-26 00:00:00
abstract::I was born in 1947 and had autism with speech delay until age four. I am now a college professor of animal science. Horse activities enabled me to make friends through a shared interest in horses. This paper describes the benefits that I experienced from working with horses and my friendships and work skills. A close ...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph16132325
更新日期:2019-07-01 00:00:00
abstract:: Background: Few studies have investigated the longitudinal association between cervical spondylosis (CS) and migraine by using a nationwide population-based database. Methods: We conducted a retrospective cohort study from 2000...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph15040587
更新日期:2018-03-25 00:00:00
abstract::The aim of this study was to investigate the possible protective role of sodium selenite on aflatoxin B1-induced oxidative stress and apoptosis in spleen of broilers. Two hundred one-day-old male broilers, divided into five groups, were fed with basal diet (control group), 0.3 mg/kg AFB1 (AFB1 group), 0.3 mg/kg AFB1 +...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph10072834
更新日期:2013-07-09 00:00:00
abstract::Peer mentorship is an effective approach for delivering health promotion programs that may be particularly useful among underrepresented populations. Advancing the peer-led approach, the Indigenous Youth Mentorship Program (IYMP) is a communal-led program rooted in Indigenous values aimed at the promotion of healthy l...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph18020733
更新日期:2021-01-16 00:00:00
abstract::The key role of diet in both human health and environmental sustainability is well known. However, there is a lack of studies investigating the environmental impact of children's dietary behavior. The aim of this observational study was to investigate the dietary environmental impact in a sample of primary school chil...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph17176105
更新日期:2020-08-21 00:00:00
abstract::According to literature, myopia has become the second most common eye disease in China, and the incidence of myopia is increasing year by year, and showing a trend of younger age. Previous researches have shown that the occurrence of myopia is mainly determined by poor eye habits, including reading and writing posture...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph17020463
更新日期:2020-01-10 00:00:00
abstract::This study aimed to further our understanding of a characteristic of Community Resilience known as Disaster Governance. Three attributes of Disaster Governance-redundancy, diversity, and overlap-were studied in four coastal towns in southern Chile that are at risk of tsunamis. Overall, we explored how different spatia...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph14091063
更新日期:2017-09-14 00:00:00
abstract::Heat is among the deadliest weather-related phenomena in the United States, and the number of heat-related deaths may increase under a changing climate, particularly in urban areas. Regional adaptation planning is unfortunately often limited by the lack of quantitative information on potential future health responses....
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph111111371
更新日期:2014-10-31 00:00:00
abstract::Based on cross-section data of 20 districts in Chengdu, this article reviews the relationships between haze and housing prices with the combined application of Spatial Error Model (SEM) and Spatial Lag Model (SLM). The results illustrate that haze significantly have negative impacts on both the selling and rental pric...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph15061161
更新日期:2018-06-02 00:00:00
abstract::The creation of walkable communities constitutes a cost-effective health promotion strategy, as walking is an accessible and free intervention for increasing physical activity and health. In this cross-sectional ecological study, we developed a walkability index for the Porto Metropolitan Area and we validated it by a...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph15122767
更新日期:2018-12-06 00:00:00
abstract::Although both methylenetetrahydrofolate reductase (MTHFR) C677T and methionine synthase reductase (MTRR) A66G polymorphisms have been associated with type 2 diabetes (T2D), their interactions with being overweight/obesity on T2D risk remain unclear. To evaluate the associations of the two polymorphisms with T2D and th...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph13121243
更新日期:2016-12-15 00:00:00
abstract::This study aims to examine whether humanity of care and environmental comfort played a role in moderating the relationship between waiting time and patient satisfaction in an emergency department (ED). The study used a cross-sectional and non-randomized design. A total of 260 ED patients in two hospitals in Italy comp...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph17082939
更新日期:2020-04-24 00:00:00
abstract::In France, a new approach is being developed through the ARTEMIS Center, which is a prevention platform for environmental health dedicated to reproduction. The objective is to describe the clinical management of patients in the ARTEMIS center. Couples with a condition affecting reproduction are referred to the ARTEMIS...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph17030694
更新日期:2020-01-21 00:00:00
abstract::International students represent an increasingly large segment of the Australian workforce. Most international students are working while studying, but there is a scarcity of quantitative data regarding potential work-study conflicts. Data from an online survey were analyzed with multivariate statistical methods to cl...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph16152695
更新日期:2019-07-28 00:00:00
abstract::With increasing use of mobile phones, exposure to radiofrequency electromagnetic field (RF-EMF) in the high-frequency band associated with mobile phones has become a public concern, with potentially adverse effects on cognitive function in children and adolescents. However, findings regarding the relation of RF-EMF an...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章,评审
doi:10.3390/ijerph17249179
更新日期:2020-12-08 00:00:00
abstract::The need to achieve short-term competitive outcomes in sports may influence the emergence of talent selection strategies, which could bias individuals' opportunities. The present study aimed to further explore the relative age effect (RAE), a phenomenon that strongly influences youth sport development. The RAE refers ...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph16162837
更新日期:2019-08-08 00:00:00
abstract::Nature-based activities have been used as therapeutic interventions for those experiencing stress and mental ill health. This study investigates whether group walks could be a nature-based intervention to foster resilience, by buffering the effects of recent stressful life events on mental health. An observational res...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph16060986
更新日期:2019-03-19 00:00:00
abstract::We evaluated the spatiotemporal distributions of black carbon (BC) and particulate matters with aerodynamic diameters of less than 2.5 m (PM2.5) concentrations at urban diesel engine emission (DEE) hotspots of South Korea. Concentrations of BC and PM2.5 were measured at the entrance gate of two diesel bus terminals an...
journal_title:International journal of environmental research and public health
pub_type: 杂志文章
doi:10.3390/ijerph14111350
更新日期:2017-11-06 00:00:00