High Rate Production of Clean Water Based on the Combined Photo-Electro-Thermal Effect of Graphene Architecture

2018 ◽  
Vol 30 (22) ◽  
pp. 1706805 ◽  
Author(s):  
Linfan Cui ◽  
Panpan Zhang ◽  
Yukun Xiao ◽  
Yuan Liang ◽  
Hanxue Liang ◽  
...  
Keyword(s):  
Thermal Effect ◽  
High Rate ◽  
Clean Water ◽  
Water Based

scholarly journals Studi Higiene Sanitasi Makanan Dengan Pemeriksaan Escherichia coli Air Pencucian dan Peralatan Makan Di Pujasera X

2020 ◽  
Vol 5 (4) ◽  
Author(s):  
Yulianti Pratama ◽  
Nadya Almira Rachman
Keyword(s):  
Escherichia Coli ◽  
Microbiological Quality ◽  
Total Coliform ◽  
Water Sources ◽  
Clean Water ◽  
Water Based ◽  
Before And After ◽  
Bacterial Transmission ◽  
Food Sanitation

Food sanitation is one of the methods used to protect food from contamination, maintain quality, and prevent potential bacterial transmission. This research was conducted to observe potential diseases caused by the microbiological quality of clean water for household use. MPN method was used to compare the quality of clean water based on the Peraturan Menteri Kesehatan Nomor 416 Tahun 1990. Swab method was implemented to observe the hygiene level of the cutlery to compare with the Peraturan Menteri Kesehatan Nomor 1098 Tahun 2003. 79/100 ml of total coliform found in tenant 1 and tenant 2 which means it did not meet the standards. Escherichia coli were found absent in both clean water sources. The same result comes from 2 samples of plates and spoons before and after the first usage and second usage. In tenant 2, Escherichia coli were found in plate sample no.1 before usage and the clerk’s hands before serving the food. Hence, it did not meet the standards. Based on the interviews and observations, the sanitation hygiene of the clerks and the physical hygiene of tenant 1 and tenant 2 had only fulfilled 61.9% and 57.1% of proper hygiene, so it needed to be improved.

Anaerobic digestion of corn ethanol thin stillage in batch and by high-rate down-flow fixed film reactors

2012 ◽  
Vol 66 (9) ◽  
pp. 1834-1841 ◽  
Author(s):  
A. Wilkinson ◽  
K. J. Kennedy
Keyword(s):  
Anaerobic Digestion ◽  
High Rate ◽  
Organic Loading Rate ◽  
Clean Water ◽  
Corn Ethanol ◽  
Thin Stillage ◽  
Treated Effluent ◽  
Fixed Film ◽  
Vs Removal ◽  
Removal Efficiencies

Thin stillage (CTS) from a dry-grind corn ethanol plant was evaluated as a carbon source for anaerobic digestion (AD) by batch and high rate semi-continuous down-flow stationary fixed film (DSFF) reactors. Biochemical methane potential (BMP) assays were carried out with CTS concentrations ranging from approximately 2,460–27,172 mg total chemical oxygen demand (TCOD) per litre, achieved by diluting CTS with clean water or a combination of clean water and treated effluent. High TCOD, SCOD and volatile solids (VS) removal efficiencies of 85 ± 2, 94 ± 0 and 82 ± 1% were achieved for CTS diluted with only clean water at an organic concentration of 21,177 mg TCOD per litre, with a methane yield of 0.30 L methane per gram TCODremoved at standard temperature and pressure (STP, 0 °C and 1 atmosphere). Batch studies investigating the use of treated effluent for dilution showed promising results. Continuous studies employed two mesophilic DSFF anaerobic digesters treating thin stillage, operated at hydraulic retention times (HRT) of 20, 14.3, 8.7, 6.3, 5 and 4.2 d. Successful digestion was achieved up to an organic loading rate (OLR) of approximately 7.4 g TCOD L−1d−1 at a 5 d HRT with a yield of 2.05 LCH4 L−1d−1 (at STP) and TCOD and VS removal efficiencies of 89 ± 3 and 85 ± 3%, respectively.

scholarly journals Investigasi Ketersediaan Air Permukaan Sungai Kapur Solok Selatan Untuk Kebutuhan Air Baku

2020 ◽  
Vol 17 (1) ◽  
pp. 41-49
Author(s):  
Zufrimar Zufrimar ◽  
Edwina Zainal
Keyword(s):  
Water Quality ◽  
Water Source ◽  
Low Flow ◽  
Clean Water ◽  
Raw Water ◽  
Domestic Water ◽  
Water Based ◽  
Biological Aspects ◽  
Raw Water Quality ◽  
Number Of Customers

South Solok Regency with a population of more than 163,000 people, 62.3% without access to clean water services through the Domestic Water Company (PDAM). The number of PDAM customers has been changed in Solok Selatan Regency in the last five years. Since the water capacity is very limited which means it difficult to increase the number of customers, so it is predicted to be unable to meet the increasing need for clean water. Based on the study of the potential for raw water availability in the South Solok Regency, Sungai Kapur has the potential as a source of raw water. To complete the potential study, it is necessary to know the quantity of raw water by examining hydrological parameters to optimize the planning of water resources potential. The quantity of raw water is assessed by the dependable flow to determine the low flow characteristic. Based on calculations, obtained a reliable discharge of 90% in monthly that can be used as raw water. The raw water source used has a discharge of ± 138.6 l / sec. However, the availability is uneven throughout the month, so a reservoir is needed to guarantee the availability of raw water for residents. In addition, raw water quality is assessed in terms of physical, chemical, and biological aspects. The results of the raw water quality test in the Sungai Kapur are eligible for raw water based on Government Regulations No. 82, 2001

scholarly journals Water‐Based Paintable LiCoO 2 Microelectrodes: A High‐Rate Li‐Ion Battery Free of Conductive and Binder Additives

2019 ◽  
Vol 4 (11) ◽  
pp. 1900499
Author(s):  
Carlos A. Páez Martínez ◽  
Chellda Exantus ◽  
Dorra Dallel ◽  
Christelle Alié ◽  
Cédric Calberg ◽  
...  
Keyword(s):  
High Rate ◽  
Li Ion Battery ◽  
Water Based ◽  
Li Ion

scholarly journals ANALISA KEBUTUHAN AIR BERSIH DI KOTA MEDAN SUMATERA UTARA

2021 ◽  
Vol 2 (2) ◽  
pp. 186-204
Author(s):  
Salomo Simanjuntak ◽  
Eben Oktavianus Zai ◽  
Michael Halomoan Tampubolon
Keyword(s):  
Daily Activities ◽  
Clean Water ◽  
Final Project ◽  
Literature Reviews ◽  
Water Based ◽  
Human Need ◽  
Quality Water ◽  
Daily Water ◽  
The City ◽  
Arithmetic Method

The water that humans really need is good quality water, which is commonly known as clean water. Clean water is one type of water-based resource that is of good quality and is commonly used by humans for consumption or in carrying out their daily activities including sanitation. The most important thing is clean water is a basic human need which greatly affects human health. The stages in completing this Final Project are first to collect the required data from the Central Bureau of Statistics and BAPPEDA Medan City with literature reviews and ask questions directly to related parties about the required data. Then the calculation of the projected population in the city of Medan using the geometric, arithmetic method. The next stage is calculating the need for clean water in Medan City and calculating the maximum daily water needs and peak hours.

scholarly journals A History of the Settler-Colonial Freshwater Impure-Ment: Water Pollution and the Creation of Multiple Environmental Injustices Along the Waipaˉ River

2021 ◽  
pp. 181-234
Author(s):  
Meg Parsons ◽  
Karen Fisher ◽  
Roa Petra Crease
Keyword(s):  
Water Management ◽  
Water Pollution ◽  
Clean Water ◽  
Management Planning ◽  
Water Based ◽  
History Of ◽  
State Water ◽  
Planning Processes ◽  
Water Management Planning ◽  
Over Time

AbstractIn this chapter, we outline the history of water pollution in Aotearoa New Zealand’s Waipā River and its tributaries and demonstrate how environmental injustices can accumulate slowly over time. We highlight how Indigenous (Māori) and non-Indigenous (Pākehā) peoples held fundamentally different understandings of what constituted contaminated or clean water based on their different ontologies and epistemologies. We highlight how Māori people and their tikanga (laws) and mātauranga (knowledge) were excluded from settler-state water management planning processes for the majority of the twentieth century. Since 1991 new legislation (Resource Management Act) allows for Māori to participate in decision-making, however Māori values and knowledge continues to be marginalised, and Māori concerns about water pollution remain unaddressed. Accordingly, in the Waipā River environmental injustice continues to accumulate.

scholarly journals Efficacy of Shallot (Allium cepa L. Var. aggregatum) and Garlic (Allium sativum) as Herbal Anthelmintic against Ascaris suum

2021 ◽  
Vol 3 (1) ◽  
pp. 34-45
Author(s):  
Rona Dibfiora ◽  
Evi U M Situmorang ◽  
Rita D Firmansyah
Keyword(s):  
Allium Cepa ◽  
Allium Sativum ◽  
Ascaris Suum ◽  
Lethal Effect ◽  
High Rate ◽  
Clean Water ◽  
Water Access ◽  
Parametric Test ◽  
Allium Cepa L ◽  
Post Hoc

Ascariasis is a disease caused by Ascaris lumbricoides (in human) or Ascaris suum (inpigs). Indonesia is a country that has a high rate of worm infection due to poverty, poor sanitation,and the difficulty of clean water access. Treatment that can be given to reduce the incidence of Ascariasis could be natural ingredients, such as Shallots (Allium cepa L. Var. aggregatum) andGarlic (Allium sativum). The aim of this research is to determine the effectiveness of Allium cepaand Allium sativum extract against the lethal effect and obtain a comparison. The sample of thisresearch was tested on 5 adult worms A.suum with three-time repetitions. The extract was madeby remaceration method in three concentrations, 6%, 9%, and 24%, and observed in 24 hours.The result by Kruskall-Wallis non-parametric test of A. cepa L. Var. aggregatum and A. sativumextract is p=0,000, and p=0,003, respectively. This result shows that both extracts havesignificant lethal effect. Post Hoc LSD test shows that A. cepa L. Var. aggregatum extract has amore significant value compared to A. sativum. The conclusion of this study is Allium cepa L.Var. Aggregatum extract is more effective than Allium sativum extract as anthelmintic of A.suum. Keywords: Allium cepa L. Var. aggregatum; Allium sativum; Anthelmintic; Ascaris suum; Shallot

scholarly journals HUBUNGAN FAKTOR LINGKUNGAN DENGAN KEJADIAN DIARE PADA BALITA DI PUSKESMAS BERNUNG

2019 ◽  
Vol 10 (1) ◽  
pp. 101
Author(s):  
Nurwinda Saputri ◽  
Yuni Puji Astuti
Keyword(s):  
Data Analysis ◽  
Sampling Technique ◽  
High Rate ◽  
Cluster Sampling ◽  
Clean Water ◽  
Water Type ◽  
Chi Square ◽  
Cross Sectional ◽  
Bowel Movements ◽  
Chi Square Test

ABSTRAKMenurut WHO pada Tahun 2011 diare merupakan penyebab kematian nomor tiga di dunia pada anak di bawah umur 5 tahun. Penyakit diare merupakan salah satu masalah kesehatan masyarakat di Indonesia, hal ini dikarenakan masih tingginya angka kesakitan diare yang menimbulkan kematian terutama pada balita. Diare adalah buang air besar lembek atau cair dapat berupa air saja yang frekuensinya lebih sering dari biasanya (biasanya tiga kali atau lebihdalam sehari).Salah satu penyebabnya, di pengaruhi oleh faktor lingkungan seperti sumber air bersih, jenis tempat pembuangan tinja, dan jenis lantai. Penelitian ini bertujuan untuk mengetahui faktor yang berhubungan dengan kejadian diare yang merupakan penelitian analitik dengan pendekatan crosssectional, dengansampel penelitian 166 respondendanteknik pengambilan sampel yang digunakancluster sampling. Data ini di kumpulkan dengan menggunakan kuesioner dan analisa data menggunakan univariat dan bivariat, analisis data statistik menggunakan uji chi square.  Hasil penelitian menunjukkan ada hubungan antara sumber air bersih dengan kejadian diare  (p=0,019), tempat pembuangan tinja (p=0,013), dan jenis lantai (p=0,001). Diharapkan pada petugas puskesmas agar memberikan penyuluhan pada masyarakat tentang penggunaan sumber air bersih, penggunaan jamban dengan benar dan menjaga kebersihan jamban dan kebersihan lantai.Kata kunci       : Balita, diare, Lingkungan  ABSTRACKAccording to WHO in 2011 diarrhea is the number three cause of death in the world in children under the age of 5 years. Diarrhea is one of the public health problems in Indonesia, this is due to the high rate of diarrhea that causes death, especially in infants. Diarrhea is soft or liquid bowel movements that can be water only, the frequency is more often than usual (usually three times or more in a day). One reason is influenced by environmental factors such as the source of clean water, type of landfill, and type of floor. This study aims to determine the factors associated with the incidence of diarrhea which is an analytical study with a cross sectional approach, with a research sample of 166 responses to the sampling technique used by cluster sampling. This data was collected using questionnaires and data analysis using univariate and bivariate, statistical data analysis using the chi square test. The results showed that there was a relationship between the source of clean water and the incidence of diarrhea (p = 0.019), feces disposal (p = 0.013), and type of floor (p = 0.001). It is expected that the puskesmas officers will provide information to the community about using clean water sources, using latrines properly and maintaining toilet cleanliness and cleanliness of the floor.Keywords: Toddlers, diarrhea, environment

scholarly journals Experimental Study of Self-aggregating Proppants: New Approaches to Proppant Flowback Control

2016 ◽  
Vol 9 (1) ◽  
pp. 236-246
Author(s):  
Lipei Fu ◽  
Guicai Zhang ◽  
Jijiang Ge ◽  
Kaili Liao ◽  
Haihua Pei ◽  
...  
Keyword(s):  
Polymer Coating ◽  
The Self ◽  
High Rate ◽  
Softening Effect ◽  
Liquid Environment ◽  
Surface Modifier ◽  
Water Based ◽  
Surface Modified ◽  
Conductivity Loss ◽  
Scanning Electron

Due to the high rate of proppant flowback after hydraulic fracturing stimulations, surface modified quartz sand proppants with excellent proppant flowback control abilities, self-aggregating proppants, were prepared. These surface modified proppants can aggregate together spontaneously and form a proppant column in water based liquid environment. Analyses show that the strong hydrogen bonds contribute to the absorption of the surface modifier onto the proppants, and the softening effect of the water to the polymer coating prompts the connection between the proppants. Scanning electron microscope pictures show that proppant particles are stacked together tightly. The stable structure contributes to the macroscopic stability of the proppant column. The maximum sand free flow rate of the model packed with modified proppants is 2.8 times larger than that of untreated proppants by average, indicating that the self-aggregating proppants exhibit excellent proppant flowback control abilities. In addition, fines control tests show that the modified proppants can also prevent the migration of the formation fines effectively, reducing the conductivity loss caused by particle migrations. By virtue of the reaggreating property and the encapsulation action of polymer coating to the crushed fragments, the fracture conductivities are increased by 3 times even at large closure stresses. The results provide a new alternative for proppant flowback control while do little damage to the permeability of the proppant pack.

scholarly journals Instability of Hydromagnetic Hybrid Flow Fe2O3-Fe3O4 /H2O of Thermocapillary Layers of Shear-Thinning Nanofluids

2020 ◽  
Author(s):  
Mehboob Ali
Keyword(s):  
Shear Thinning ◽  
Transverse Magnetic ◽  
High Rate ◽  
Wave Number ◽  
Hybrid Nanofluid ◽  
Enhancement Of Heat Transfer ◽  
Transfer Rates ◽  
Water Based ◽  
Hybrid Nanofluids ◽  
Heat Transformation

Abstract Nanofluids have inordinate uses in industries due to their high rate of heat transformation. The enhancement of heat transfer rates, an advanced type of nanofluids called “Hybrid nanofluid” is discovered. Hybrid nanofluids are created by the suspension of two or more type of nano sized atoms in base fluid such as water, oil etc. In current work, the instability of Hydromagnetic Poiseuille flow of thermocapillary layers of liquid of shear thinning hybrid nanofluid of Fe2O3-Fe3O4 in water based fluid is investigated. The transverse magnetic field is imposed on the flow. The solution of obtained ODEs for current problem is found using a numerical method called “cheybeshev collocation method”. The eigenvalue problem from generalized Orr-sommerfeld equations is solved using the algorithm of “QZ” abbreviated as (Qualitat and Zuverlassigkeit). The instability of water based hybrid nanofluids for variation of different parameters are analyzed and discussed through graphs. It has been found that Reynolds number and prandtl number has destabilizing effect on the flow while wave number and magnetic parameter has stabilizing impact on the fluid flow

Sign in / Sign up

Export Citation Format

Share Document