scholarly journals Complete System to Generate Clean Water from a Contaminated Water Body by a Handmade Flower-like Light Absorber

ACS Omega ◽  
2021 ◽  
Author(s):  
Muhammad Javed ◽  
Sippi Pirah ◽  
Yonghe Xiao ◽  
Yilan Sun ◽  
Yating Ji ◽  
...  
Keyword(s):  
Water Body ◽  
Complete System ◽  
Contaminated Water ◽  
Clean Water ◽  
Light Absorber

scholarly journals Determination of Filtration and Purification System for Flood Water Filter

2018 ◽  
Vol 7 (2.15) ◽  
pp. 8
Author(s):  
Nurul Aini Kamarudin ◽  
Mohd Khairul Amri Kamarudin ◽  
Rosalan Umar ◽  
Abdul Rahman Hassan ◽  
Fathurrahman Lananan ◽  
...  
Keyword(s):  
Contaminated Water ◽  
Clean Water ◽  
Pathogenic Microorganism ◽  
Flood Water ◽  
Water Filter ◽  
Dirty Water ◽  
Water Problem ◽  
Purification System ◽  
Water Well

Water is one of the basic needs which essential to life but cannot take it easy, it becomes more concern when a flood, there is plenty of dirty water than clean water, and the sources of the water are not approved to use. There are many kinds of waterborne pathogens which can donate diseases also death if not treating the water well before use. The treatment can be utilized based on the size of the microorganism. By identifying the size of the smallest bacteria will make easier to find the filtration based on the size of filter pores and other processes to ensure all the bacteria is removed and the water safe to use. Even there are many kinds of bacteria or microorganisms in the contaminated water, but the pathogens need to deal. The water will become clean and safe to use when the colour is clear and there is any pathogenic microorganism in there. This study is to ensure water is clean from pathogen after the flood water is filtered by know for sure the organism’s size and to overcome the lack of clean water problem during the flood and others purpose. 

A photothermal and Fenton active MOF-based membrane for high-efficiency solar water evaporation and clean water production

2020 ◽  
Vol 8 (43) ◽  
pp. 22728-22735
Author(s):  
Xu Ma ◽  
Zheng Deng ◽  
Zhuoyi Li ◽  
Danke Chen ◽  
Xinyi Wan ◽  
...  
Keyword(s):  
High Efficiency ◽  
Water Evaporation ◽  
Contaminated Water ◽  
Clean Water ◽  
Evaporation Process ◽  
Water Production ◽  
Solar Water

A Fenton active Zr–Fc MOF-based membrane was designed for efficiently producing clean water from VOC contaminated water via the solar evaporation process.

Deriving SCC Initiation Times and Growth Rates from Posttest Fractrographic Analysis

CORROSION ◽  
1991 ◽  
Vol 47 (7) ◽  
pp. 528-535 ◽  
Author(s):  
T. Kobayashi ◽  
D. A. Shockey ◽  
R. L. Jones
Keyword(s):  
Stress Corrosion ◽  
Growth Rates ◽  
Contaminated Water ◽  
Extension Rate ◽  
Clean Water ◽  
Intergranular Stress Corrosion ◽  
Aqueous Environments ◽  
Oxygenated Water ◽  
Rate Test ◽  
Type 304

Abstract This exploratory effort demonstrates the feasibility of determining crack initiation times and growth rates by posttest analysis of the fracture surfaces of stress corrosion cracking (SCC) test specimens. The fracture surface topography analysis (FRASTA) technique was applied to constant extension rate test (CERT) specimens of type 304 (UNS S30400) stainless steel fractured in several aqueous environments. Initiation times and propagation rates were determined for intergranular stress corrosion cracks in specimens tested at 288°C in clean oxygenated water containing a small amount of H2SO4. Cracking appeared to begin predominantly at the specimen's surface in clean water, but in the specimen's interior in the H2SO4-contaminated water.

The Health Impact Fund: Boosting Pharmaceutical Innovation Without Obstructing Free Access

2009 ◽  
Vol 18 (1) ◽  
pp. 78-86 ◽  
Author(s):  
THOMAS POGGE
Keyword(s):  
Health Effects ◽  
Political Reform ◽  
Health Impact ◽  
Legal Rights ◽  
Contaminated Water ◽  
Free Access ◽  
Clean Water ◽  
Global Poverty ◽  
The Poor ◽  
Potential Exploitation

In an earlier piece in these pages,1 I described the health effects of the still massive problem of global poverty: The poor worldwide face greater environmental hazards than the rest of us, from contaminated water, filth, pollution, worms, and insects. They are exposed to greater dangers from people around them, through traffic, crime, communicable diseases, sexual violence, and potential exploitation by the more affluent. They lack means to protect themselves and their families against such hazards, through clean water, nutritious food, satisfactory hygiene, necessary rest, adequate clothing, and safe shelter. They lack the means to enforce their legal rights or to press for political reform.

scholarly journals Bioensaio com náiades de Campylocia anceps Eaton, 1983 para avaliação dos metais Cobre (Cu) e Zinco (Zn).

2008 ◽  
Vol 1 (2) ◽  
pp. 33-35
Author(s):  
Enide Luciana Lima Belmont ◽  
Maria José do Nascimento Lopes ◽  
Maria do Socorro Rocha Da Silva ◽  
Cláudio Rabelo dos Santos-Neto
Keyword(s):  
Economic Development ◽  
Chemistry Laboratory ◽  
Contaminated Water ◽  
Clean Water ◽  
Industrial District

Em Manaus, o processo de desenvolvimento industrial e sócio-econômico, bem como a falta de programas eficientes de controle ambiental tem possibilitado a ocorrência de impactos ambientais especialmente nos igarapés urbanos. Estes impactos resultam na degradação dos recursos hídricos por meio de poluentes orgânicos e inorgânicos oriundos das atividades desenvolvidas no entorno das bacias hidrográficas. Objetivou-se então analisar os teores dos metais cobre e zinco em náiades de C. anceps. O estudo foi realizado em dois afluentes na Bacia do Educandos: o primeiro, foi feita a coleta de C. anceps, está situado na Universidade Federal do Amazonas e, o segundo, foi feita a coleta da água contaminada, igarapé do Quarenta, está situado nas proximidades de fábricas do Distrito Industrial de Manaus. As náiades coletadas no igarapé universidade (água limpa) foram levadas ao laboratório de entomologia, no INPA, onde foram expostas a água contaminada do igarapé do Quarenta , nas concentrações de 100%, 50% ,10%  e um controle com 100% de água limpa. As C. anceps ficaram expostas a esses poluentes por seis dias.  Com três e seis dias foram retiradas para a análise dos metais, no laboratório de química da água. Os teores desses nos mostraram que há uma absorção deste pelas náiades, pois quanto maior a concentração dos metais na água, maior será o valor encontrado nos organismos. Bioassay with nymph of Campylocia anceps Eaton, 1983 for evaluation of metals copper (Cu) and zinc (Zn). Abstract. In Manaus, the process of industrial and partner-economic development, as well as the lack of efficient programs of ambient control has made possible the occurrence of ambient impacts especially in narrow river urban. These impacts result in the degradation of the hidrics resources by means of deriving organic and inorganics pollutants of the activities developed in around of the basins hidrografics. It was objectified then to analyze texts of metals couper and zinc in nymphs of C. anceps. The study it was carried through in two narrow rivers in the Basin of the Educandos: the first one, was made the collection of C. anceps, is situated in the Federal University of Amazon and the collection of the contaminated water was made, narrow river of the Quarenta, is situated in the neighborhoods of plants of the Industrial District of Manaus. Nymphs collected in the narrow river university (clean water) had been taken to the entomology laboratory, in the INPA, where they had been displayed the water contaminated of the narrow river of the Quarenta, in the concentrations of 100%, 50%, 10% and a control with 100% of clean water. The nynfphs of C. anceps had been displayed to these pollutants per six days. With three and six days they had been removed for analyzes of metals, in the chemistry laboratory of the water. The texts of these in had shown them that it has an absorption of this for nymphs, therefore how much bigger the concentration of metals in the water, greater will be the value found in the organisms.

scholarly journals Development of Smart Kit Rainwater Harvesting System for Potable Water Purpose

2018 ◽  
Vol 7 (4.30) ◽  
pp. 338
Author(s):  
N. M. Sunar ◽  
A. T. Kosat ◽  
H. Harun ◽  
N. H. A. Hamid ◽  
A. Khalid ◽  
...  
Keyword(s):  
Potable Water ◽  
Rainwater Harvesting ◽  
Complete System ◽  
Storage System ◽  
Water Storage ◽  
Clean Water ◽  
Water Usage ◽  
Water Storage Tank ◽  
Complete Set

The Smart Kit Rainwater Harvesting (RWH) system has the potential to contribute to the conservation of clean water usage. The aim of this study is to build an affordable rainwater storage system for all type houses with easy installation and friendly user. The current constraints on the installation of rainwater storage system in the market requires a fairly expensive cost, and skilled technical workers to install it. In contrast, the Smart Kit RWH, is friendly built in a complete set that is easy to install and easy to maintain by homeowners. This system is very suitable for the use in agriculture and farming. This Smart Kit RWH consist of water storage tank, existing gutter and main pipe, first flush diverter and some connector pipe to create this complete system. This product is limited to storing untreated rain water quality, and the quality of rainwater collected can be used as water storage for household and sanitary equipment such as flushing cistern and other potable water usage. Nevertheless, this contributes to the good and the benefits of individuals, communities and nations. This product able to help the rural population in particular of having problems in getting clean water. Hopefully, with the production of this system, it can foster the public's awareness of the advantages and benefits of installing rainwater storage systems at home, plantation and farming.

scholarly journals Wastewater Treatment using Magnetic Nanoparticles and Nanocomposites

2020 ◽  
Author(s):  
Zahra Nasrollahi ◽  
Keyword(s):  
Magnetic Field ◽  
Wastewater Treatment ◽  
Magnetic Nanoparticles ◽  
External Magnetic Field ◽  
Short Review ◽  
Magnetic Nanomaterials ◽  
Contaminated Water ◽  
Clean Water ◽  
Refinement Procedure ◽  
Applied External Magnetic Field

The application of magnetic nano-photocatalysts in clean water technologies, has been widely studied due to their improved chemical and physical properties. Due to the incorporation of magnetic materials into the nano-photocatalysts, the separation of the resultant nanocomposite can be facilitated via an applied external magnetic field, leading to more economic and also more ecologically friendly water refinement procedure. This paper presents a short review of magnetic nanomaterials in the purification of contaminated water/wastewater.

scholarly journals Determination of Sentinel-2 spectral reflectance to detect oil spill on the sea surface

2020 ◽  
Vol 4 (3) ◽  
pp. 144-154
Author(s):  
Pingkan Mayestika Afgatiani ◽  
Fanny Aditya Putri ◽  
Argo Galih Suhadha ◽  
Andi Ibrahim
Keyword(s):  
Oil Spill ◽  
Water Body ◽  
Spectral Reflectance ◽  
Oil Spills ◽  
Google Earth ◽  
Clean Water ◽  
Blue Band ◽  
Oil Refineries ◽  
Area Of Interest ◽  
Sentinel 2

Oil spill is one of the most common marine environmental problems. Oil spills can be caused by leakage at oil refineries at sea or disposal of vessel waste. This event has an impact on various sectors, such as fisheries, tourism, and marine ecosystems. This study aims to determine the spectral reflectance of Sentinel-2 response to detecting oil spill on the sea. Oil identification in the sea can be made visually by looking at colored patterns at sea level. Sentinel-2 image reflectance was obtained by processing the image using the Google Earth Engine platform. The results were clipped according to the area of ​​interest and divided to get a value between 0 and 1. Bands combination is possible to identify the oil spill visually. The silvery pattern saw in the red-green-blue combination, but it is arduous to estimate its distribution because of the silvery pattern seen for thick oil. The combination of SWIR-NIR-red bands proved effective in showing the distribution of oil with a deep black pattern. Spectral measurements in the field were undertaken by taking samples in the areas of oil spills and clean water bodies. The oil layer had a lower reflectance than the clean water body. The blue band gave a high response, but the red band gave less response. In the NIR and SWIR bands, the reflectance of oil was lower than the water body. In conclusion, the SWIR - NIR - RED band combination is better used to determine oil spills due to it shows the characteristics of oil generally, either thin or thick oil.

scholarly journals Water Pollution Monitoring using IOT

2019 ◽  
Vol 9 (1) ◽  
pp. 809-811
Keyword(s):  
Water Pollution ◽  
Dissolved Oxygen ◽  
Water Body ◽  
Water Bodies ◽  
Pollution Monitoring ◽  
Contaminated Water ◽  
System Monitoring ◽  
Human Waste ◽  
Biological Contamination ◽  
Essential Problem

Activities performed by humans is one of the major reasons for the increase in pollution. This increase in the pollution of earth unfairly influenced the water bodies that is a need for eternity. Asia has the most number of contaminated water bodies which is mainly composed of Bacteria through Human waste. Even if we side with treating water instead of prevention of pollution, identifying the extent to which the water body is contaminated is an essential problem that needs to be addressed. Factoring BOD and dissolved oxygen which are the prime causes of biological contamination of a water body is essential for a system monitoring water pollution. This paper addresses the issue of contamination magnitude through the use of IOT components. Monitoring and presenting data is the main scope of this system.

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