scholarly journals Rediscovering Silicones: The Anomalous Water Permeability of “Hydrophobic” PDMS Suggests Nanostructure and Applications in Water Purification and Anti‐Icing

2020 ◽  
pp. 2000682
Author(s):  
Pei Bian ◽  
Yan Wang ◽  
Thomas J. McCarthy
Keyword(s):  
Water Purification ◽  
Water Permeability ◽  
Anomalous Water

scholarly journals Vertically Aligned Carbon Nanotube Membranes: Water Purification and Beyond

Membranes ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 273
Author(s):  
Jeong Hoon Lee ◽  
Han-Shin Kim ◽  
Eun-Tae Yun ◽  
So-Young Ham ◽  
Jeong-Hoon Park ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Water Purification ◽  
Water Permeability ◽  
Proton Exchange Membrane ◽  
Antibacterial Properties ◽  
High Water ◽  
Proton Exchange ◽  
Conductive Membranes ◽  
Potential Applications ◽  
Vertically Aligned

Vertically aligned carbon nanotube (VACNT) membranes have attracted significant attention for water purification owing to their ultra-high water permeability and antibacterial properties. In this paper, we critically review the recent progresses in the synthesis of VACNT arrays and fabrication of VACNT membrane methods, with particular emphasis on improving water permeability and anti-biofouling properties. Furthermore, potential applications of VACNT membranes other than water purification (e.g., conductive membranes, electrodes in proton exchange membrane fuel cells, and solar electricity–water generators) have been introduced. Finally, future outlooks are provided to overcome the limitations of commercialization and desalination currently faced by VACNT membranes. This review will be useful to researchers in the broader scientific community as it discusses current and new trends regarding the development of VACNT membranes as well as their potential applications.

scholarly journals Ozone Resistance, Water Permeability, and Concrete Adhesion of Metallic Films Sprayed on a Concrete Structure for Advanced Water Purification

Coatings ◽  
2017 ◽  
Vol 7 (3) ◽  
pp. 41 ◽  
Author(s):  
Jin-Ho Park ◽  
Jitendra Singh ◽  
Han-Seung Lee
Keyword(s):  
Water Purification ◽  
Water Permeability ◽  
Concrete Structure ◽  
Metallic Films ◽  
Ozone Resistance

scholarly journals A nanocomposite paper comprising calcium silicate hydrate nanosheets and cellulose nanofibers for high-performance water purification

RSC Advances ◽  
2020 ◽  
Vol 10 (51) ◽  
pp. 30304-30313
Author(s):  
Jie Li ◽  
Jingshu Zhang ◽  
Xuan Wu ◽  
Jiajun Zhao ◽  
Minjie Wu ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Water Purification ◽  
Water Permeability ◽  
Calcium Silicate ◽  
High Performance ◽  
Calcium Silicate Hydrate ◽  
Cellulose Nanofibers ◽  
High Water ◽  
Inorganic Contaminants

A nanocomposite paper with high water permeability and removal efficiency was prepared for the removal of organic and inorganic contaminants by filtration.

A CO2-responsive graphene oxide/polymer composite nanofiltration membrane for water purification

2018 ◽  
Vol 6 (16) ◽  
pp. 6785-6791 ◽  
Author(s):  
Liangliang Dong ◽  
Weizheng Fan ◽  
Xia Tong ◽  
Hongji Zhang ◽  
Mingqing Chen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Polymer Composite ◽  
Water Purification ◽  
Water Permeability ◽  
Nanofiltration Membrane ◽  
Dye Molecules ◽  
Nanofiltration Membranes ◽  
Trade Off ◽  
Responsive Polymer

Nanofiltration membranes based on graphene oxide complexed with a CO2-responsive polymer display gas-tunable water permeability, high retention of dye molecules and excellent trade-off between water permeability and rejection of some salts.

Sound cleans up water purification

Nature ◽  
2002 ◽  
Author(s):  
Ingrid Holmes
Keyword(s):  
Water Purification

Fouling Is the Beginning: Upcycling Biopolymer-Fouled Substrates for Fabricating High-Permeance Thin-Film Composite Polyamide Membranes

2020 ◽  
Author(s):  
Ruobin Dai ◽  
Hongyi Han ◽  
Tianlin Wang ◽  
Jiayi Li ◽  
Chuyang Y. Tang ◽  
...  
Keyword(s):  
Thin Film ◽  
High Pressure ◽  
End Of Life ◽  
Water Purification ◽  
Low Pressure ◽  
Polymeric Membranes ◽  
Membrane Recycling ◽  
Film Composite ◽  
Thin Film Composite ◽  
First Time

Commercial polymeric membranes are generally recognized to have low sustainability as membranes need to be replaced and abandoned after reaching the end of their life. At present, only techniques for downcycling end-of-life high-pressure membranes are available. For the first time, this study paves the way for upcycling fouled/end-of-life low-pressure membranes to fabricate new high-pressure membranes for water purification, forming a closed eco-loop of membrane recycling with significantly improved sustainability.

Hydraulic model of water permeability of the concrete lining during a continuous operation of the channel

2018 ◽  
pp. 30-40
Author(s):  
Yu.M. Kosichenko ◽  
◽  
A.Ju. Garbuz ◽  
Keyword(s):  
Water Permeability ◽  
Hydraulic Model ◽  
Continuous Operation ◽  
Concrete Lining

DISINFEKSI UNTUK PROSES PENGOLAHAN AIR MINUM

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Nusa Idaman Said
Keyword(s):  
Drinking Water ◽  
Water Purification ◽  
Distribution System ◽  
Residual Effect ◽  
Drinking Water Treatment ◽  
Disinfection Byproducts ◽  
Water Disinfection ◽  
Pathogenic Microorganisms ◽  
Microbiological Contamination ◽  
Disinfection Process

Water disinfection means the removal, deactivation or killing of pathogenic microorganisms. Microorganisms are destroyed or deactivated, resulting in termination of growth and reproduction. When microorganisms are not removed from drinking water, drinking water usage will cause people to fall ill. Chemical inactivation of microbiological contamination in natural or untreated water is usually one of the final steps to reduce pathogenic microorganisms in drinking water. Combinations of water purification steps (oxidation, coagulation, settling, disinfection, and filtration) cause (drinking) water to be safe after production. As an extra measure many countries apply a second disinfection step at the end of the water purification process, in order to protect the water from microbiological contamination in the water distribution system. Usually one uses a different kind of disinfectant from the one earlier in the process, during this disinfection process. The secondary disinfection makes sure that bacteria will not multiply in the water during distribution. This paper describes several technique of disinfection process for drinking water treatment. Disinfection can be attained by means of physical or chemical disinfectants. The agents also remove organic contaminants from water, which serve as nutrients or shelters for microorganisms. Disinfectants should not only kill microorganisms. Disinfectants must also have a residual effect, which means that they remain active in the water after disinfection. For chemical disinfection of water the following disinfectants can be used such as Chlorine (Cl2),  Hypo chlorite (OCl-), Chloramines, Chlorine dioxide (ClO2), Ozone (O3), Hydrogen peroxide etch. For physical disinfection of water the following disinfectants can be used is Ultraviolet light (UV). Every technique has its specific advantages and and disadvantages its own application area sucs as environmentally friendly, disinfection byproducts, effectivity, investment, operational costs etc. Kata Kunci : Disinfeksi, bakteria, virus, air minum, khlor, hip khlorit, khloramine, khlor dioksida, ozon, UV.

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