OUT OF MIND
Would you like to react to this message? Create an account in a few clicks or log in to continue.
Latest topics
» Cool Lightening Event Caught on Film
New Device Harnesses Solar Energy to Purify Water EmptyToday at 10:52 am by PurpleSkyz

» William Shatner is going to space, aged 90
New Device Harnesses Solar Energy to Purify Water EmptyToday at 10:47 am by PurpleSkyz

» LIDAR reveals hidden secrets of Teotihuacan
New Device Harnesses Solar Energy to Purify Water EmptyToday at 10:44 am by PurpleSkyz

» Rose McGowan Survives Murder Attempt Following Her Threats To Expose Clinton
New Device Harnesses Solar Energy to Purify Water EmptyToday at 10:30 am by PurpleSkyz

» Amtrak train derailed in Montana
New Device Harnesses Solar Energy to Purify Water EmptyToday at 10:26 am by PurpleSkyz

» Despite Horrifying State Violence, Brave Australians Continue to Resist COVID Police State
New Device Harnesses Solar Energy to Purify Water EmptyToday at 10:24 am by PurpleSkyz

»  Large protest against COVID restrictions in Bern, Switzerland.
New Device Harnesses Solar Energy to Purify Water EmptyToday at 10:22 am by PurpleSkyz

» MASSIVE DEMONSTRATION AGAINST THE VACCINE PASSPORT IN LAUSANNE
New Device Harnesses Solar Energy to Purify Water EmptyToday at 10:20 am by PurpleSkyz

» UK Medicine Regulator Confirms Injury and Fatality Stats
New Device Harnesses Solar Energy to Purify Water EmptyToday at 10:12 am by PurpleSkyz

» New Yorkers Rising Up as Mandatory COVID Shot Deadline Looms – Citywide Walk Out Planned Same Day
New Device Harnesses Solar Energy to Purify Water EmptyToday at 10:07 am by PurpleSkyz

» COVID "Vaccine Shedding" Data, CDC/FDA Accused Of COVID "Willful Misconduct" & The COVID Illusion
New Device Harnesses Solar Energy to Purify Water EmptyToday at 10:03 am by PurpleSkyz

» COVID-19: A Legal & Historical Retrospective
New Device Harnesses Solar Energy to Purify Water EmptyToday at 9:58 am by PurpleSkyz

» Care home workers can be exempt from being vaxxed for 12 weeks
New Device Harnesses Solar Energy to Purify Water EmptyToday at 9:53 am by PurpleSkyz

» Former Merck Sales Rep Brandy Vaughan Speaks From The Grave: The Truth About The Criminal Circle Of Vaccines
New Device Harnesses Solar Energy to Purify Water EmptyToday at 9:49 am by PurpleSkyz

» Bad-clown Rising - Which Way the River Flows
New Device Harnesses Solar Energy to Purify Water EmptyYesterday at 2:35 pm by PurpleSkyz

» Protests Around the World Target Global Corporate Food Empire
New Device Harnesses Solar Energy to Purify Water EmptyYesterday at 1:50 pm by PurpleSkyz

» JERZY SCAMKOWSKI USES THE SAME OLD STORY TO BEG FROM THE GULLIBLE
New Device Harnesses Solar Energy to Purify Water EmptyYesterday at 11:07 am by ANENRO

» How the CDC Creates Mandates
New Device Harnesses Solar Energy to Purify Water EmptyYesterday at 11:02 am by PurpleSkyz

» New Movement Launched by Physicians to Fight Medical Tyranny
New Device Harnesses Solar Energy to Purify Water EmptyYesterday at 10:57 am by PurpleSkyz

» Over 17,000 Duplicate Votes Were Found In Maricopa County
New Device Harnesses Solar Energy to Purify Water EmptyYesterday at 10:54 am by PurpleSkyz

You are not connected. Please login or register

OUT OF MIND » CHANGING ENVIRONMENT & NATURE » NEW TECH FOR A HEALTHY PLANET » New Device Harnesses Solar Energy to Purify Water

New Device Harnesses Solar Energy to Purify Water

Go down  Message [Page 1 of 1]

PurpleSkyz

PurpleSkyz
Admin
New Device Harnesses Solar Energy to Purify Water
 Jul 8, 2020

A team of scientists at the University of Science and Technology of China has developed an efficient and sustainable hierarchical steam generator that, with the help of bacterial cellulose nanocomposites, harnesses solar energy to purify water.

New Device Harnesses Solar Energy to Purify Water A242c2aad0d2d442


The wood-based hierarchical solar steam generator: CNT – carbon nanotubes, BC – bacterial cellulose, GB – glass bubbles. Image credit: Guan et al, doi: 10.1021/acs.nanolett.0c01088.
Water scarcity is a major global challenge in modern society. Nowadays, almost one-fifth of the world’s population lives in water-deficient areas.
Therefore, it is urgently required to develop efficient, low-cost, sustainable, and easily accessible technologies and devices to generate clean water, especially for people living in off-grid areas.
Since solar energy is one of the most abundant resources on Earth, water purification by solar distillation is considered as a promising technology to produce clean water from a variety of undrinkable water resources, including seawater, river/lake water, and contaminated water.

“A solar steam generator is a device that uses the abundant energy of the Sun to separate water and contaminants in solar distillation process,” said study senior author Dr. Shu-Hong Yu and colleagues.
“Many different versions of these devices have been developed, with varying efficiencies.”
“To design better solar steam generators, researchers must find ways to improve light absorption, heat management, water transport and evaporation.”
Dr. Yu and co-authors wanted to combine all four improvements in a single device.
The scientists chose wood as the basis of their generator because of its sustainability and porous structure, which allows rapid water transport.
They made their device with the help of bacteria that produced long cellulose nanofibers, which bound the layers of the device together.
They added bacteria to the surface of a block of wood and allowed them to ferment.
Then, they sprayed an aerosol of glass bubbles — tiny hollow spheres that provide excellent thermal insulation — onto the surface.

The glass bubbles became embedded in the cellulose nanofibers produced by the bacteria, forming a hydrogel.
Finally, the team added carbon nanotubes, which tangled with the cellulose nanofibers to form a light-absorbing, water-evaporating top layer.
“The device works by transporting water upward through the wood to the light-absorbing layer, which is heated by the Sun,” the authors said.
“The water evaporates, and the steam is collected and condensed to produce pure water.”
“The insulating layer of glass bubbles keeps heat from being transferred downward through the device and lost, and the nanoscale structures lower the energy required for water vaporization.”
“As a result, the new device has a higher evaporation rate and efficiency than most existing solar steam generators.”
The team’s solar steam generator is described in a paper published today in the journal Nano Letters.
_____
Qing-Fang Guan et al. Sustainable Wood-Based Hierarchical Solar Steam Generator: A Biomimetic Design with Reduced Vaporization Enthalpy of Water. Nano Lett, published online July 8, 2020; doi: 10.1021/acs.nanolett.0c01088
This article is based on text provided by the American Chemical Society.

http://www.sci-news.com/othersciences/nanotechnologies/solar-steam-generator-water-08617.html?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+BreakingScienceNews+%28Breaking+Science+News%29

Thanks to: http://www.sci-news.com



  

Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum